mirror of https://github.com/arendst/Tasmota.git
Adafruit_BusIO: bump library to version 1.11.0
The previous included version (1.0.10) was failing to read more than 32 bytes of data from I2C devices (tested on AMG8833 which typically reads 128 bytes -whose support is in progress-). The problem was fixed in version 1.9.0. Currently, this library is required and used just by the Adafruit_VEML7700 library. The VEML7700 sensor has been tested and proved to correctly work. Signed-off-by: Roberto Bonacina <roby.bonacina@tutanota.com>
This commit is contained in:
Roberto Bonacina
parent
bd83b9fdc2
commit
9f752b9230
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@ -1,85 +1,132 @@
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#include <Adafruit_BusIO_Register.h>
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#if !defined(SPI_INTERFACES_COUNT) || \
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(defined(SPI_INTERFACES_COUNT) && (SPI_INTERFACES_COUNT > 0))
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/*!
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* @brief Create a register we access over an I2C Device (which defines the bus and address)
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* @brief Create a register we access over an I2C Device (which defines the
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* bus and address)
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* @param i2cdevice The I2CDevice to use for underlying I2C access
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* @param reg_addr The address pointer value for the I2C/SMBus register, can be 8 or 16 bits
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* @param reg_addr The address pointer value for the I2C/SMBus register, can
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* be 8 or 16 bits
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* @param width The width of the register data itself, defaults to 1 byte
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* @param bitorder The bit order of the register (used when width is > 1), defaults to LSBFIRST
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* @param address_width The width of the register address itself, defaults to 1 byte
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* @param byteorder The byte order of the register (used when width is > 1),
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* defaults to LSBFIRST
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* @param address_width The width of the register address itself, defaults
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* to 1 byte
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*/
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Adafruit_BusIO_Register::Adafruit_BusIO_Register(Adafruit_I2CDevice *i2cdevice, uint16_t reg_addr,
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uint8_t width, uint8_t bitorder, uint8_t address_width) {
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Adafruit_BusIO_Register::Adafruit_BusIO_Register(Adafruit_I2CDevice *i2cdevice,
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uint16_t reg_addr,
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uint8_t width,
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uint8_t byteorder,
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uint8_t address_width) {
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_i2cdevice = i2cdevice;
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_spidevice = NULL;
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_addrwidth = address_width;
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_address = reg_addr;
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_bitorder = bitorder;
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_byteorder = byteorder;
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_width = width;
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}
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/*!
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* @brief Create a register we access over an SPI Device (which defines the bus and CS pin)
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* @param spidevice The SPIDevice to use for underlying I2C access
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* @param reg_addr The address pointer value for the I2C/SMBus register, can be 8 or 16 bits
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* @param type The method we use to read/write data to SPI (which is not as well defined as I2C)
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* @brief Create a register we access over an SPI Device (which defines the
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* bus and CS pin)
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* @param spidevice The SPIDevice to use for underlying SPI access
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* @param reg_addr The address pointer value for the SPI register, can
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* be 8 or 16 bits
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* @param type The method we use to read/write data to SPI (which is not
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* as well defined as I2C)
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* @param width The width of the register data itself, defaults to 1 byte
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* @param bitorder The bit order of the register (used when width is > 1), defaults to LSBFIRST
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* @param address_width The width of the register address itself, defaults to 1 byte
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* @param byteorder The byte order of the register (used when width is > 1),
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* defaults to LSBFIRST
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* @param address_width The width of the register address itself, defaults
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* to 1 byte
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*/
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Adafruit_BusIO_Register::Adafruit_BusIO_Register(Adafruit_SPIDevice *spidevice, uint16_t reg_addr,
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Adafruit_BusIO_Register::Adafruit_BusIO_Register(Adafruit_SPIDevice *spidevice,
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uint16_t reg_addr,
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Adafruit_BusIO_SPIRegType type,
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uint8_t width, uint8_t bitorder, uint8_t address_width) {
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uint8_t width,
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uint8_t byteorder,
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uint8_t address_width) {
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_spidevice = spidevice;
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_spiregtype = type;
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_i2cdevice = NULL;
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_addrwidth = address_width;
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_address = reg_addr;
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_bitorder = bitorder;
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_byteorder = byteorder;
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_width = width;
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}
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/*!
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* @brief Create a register we access over an I2C or SPI Device. This is a handy function because we
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* can pass in NULL for the unused interface, allowing libraries to mass-define all the registers
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* @param i2cdevice The I2CDevice to use for underlying I2C access, if NULL we use SPI
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* @param spidevice The SPIDevice to use for underlying I2C access, if NULL we use I2C
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* @param reg_addr The address pointer value for the I2C/SMBus register, can be 8 or 16 bits
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* @param type The method we use to read/write data to SPI (which is not as well defined as I2C)
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* @brief Create a register we access over an I2C or SPI Device. This is a
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* handy function because we can pass in NULL for the unused interface, allowing
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* libraries to mass-define all the registers
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* @param i2cdevice The I2CDevice to use for underlying I2C access, if NULL
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* we use SPI
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* @param spidevice The SPIDevice to use for underlying SPI access, if NULL
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* we use I2C
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* @param reg_addr The address pointer value for the I2C/SMBus/SPI register,
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* can be 8 or 16 bits
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* @param type The method we use to read/write data to SPI (which is not
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* as well defined as I2C)
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* @param width The width of the register data itself, defaults to 1 byte
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* @param bitorder The bit order of the register (used when width is > 1), defaults to LSBFIRST
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* @param address_width The width of the register address itself, defaults to 1 byte
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* @param byteorder The byte order of the register (used when width is > 1),
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* defaults to LSBFIRST
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* @param address_width The width of the register address itself, defaults
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* to 1 byte
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*/
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Adafruit_BusIO_Register::Adafruit_BusIO_Register(Adafruit_I2CDevice *i2cdevice, Adafruit_SPIDevice *spidevice,
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Adafruit_BusIO_SPIRegType type, uint16_t reg_addr,
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uint8_t width, uint8_t bitorder, uint8_t address_width) {
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Adafruit_BusIO_Register::Adafruit_BusIO_Register(
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Adafruit_I2CDevice *i2cdevice, Adafruit_SPIDevice *spidevice,
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Adafruit_BusIO_SPIRegType type, uint16_t reg_addr, uint8_t width,
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uint8_t byteorder, uint8_t address_width) {
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_spidevice = spidevice;
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_i2cdevice = i2cdevice;
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_spiregtype = type;
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_addrwidth = address_width;
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_address = reg_addr;
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_bitorder = bitorder;
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_byteorder = byteorder;
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_width = width;
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}
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/*!
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* @brief Write a buffer of data to the register location
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* @param buffer Pointer to data to write
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* @param len Number of bytes to write
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* @return True on successful write (only really useful for I2C as SPI is uncheckable)
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* @return True on successful write (only really useful for I2C as SPI is
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* uncheckable)
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*/
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bool Adafruit_BusIO_Register::write(uint8_t *buffer, uint8_t len) {
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uint8_t addrbuffer[2] = {(uint8_t)(_address & 0xFF), (uint8_t)(_address>>8)};
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uint8_t addrbuffer[2] = {(uint8_t)(_address & 0xFF),
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(uint8_t)(_address >> 8)};
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if (_i2cdevice) {
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return _i2cdevice->write(buffer, len, true, addrbuffer, _addrwidth);
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}
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if (_spidevice) {
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if (_spiregtype == ADDRESSED_OPCODE_BIT0_LOW_TO_WRITE) {
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// very special case!
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// pass the special opcode address which we set as the high byte of the
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// regaddr
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addrbuffer[0] =
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(uint8_t)(_address >> 8) & ~0x01; // set bottom bit low to write
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// the 'actual' reg addr is the second byte then
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addrbuffer[1] = (uint8_t)(_address & 0xFF);
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// the address appears to be a byte longer
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return _spidevice->write(buffer, len, addrbuffer, _addrwidth + 1);
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}
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if (_spiregtype == ADDRBIT8_HIGH_TOREAD) {
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addrbuffer[0] &= ~0x80;
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}
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if (_spiregtype == ADDRBIT8_HIGH_TOWRITE) {
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addrbuffer[0] |= 0x80;
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}
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if (_spiregtype == AD8_HIGH_TOREAD_AD7_HIGH_TOINC) {
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addrbuffer[0] &= ~0x80;
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addrbuffer[0] |= 0x40;
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}
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return _spidevice->write(buffer, len, addrbuffer, _addrwidth);
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}
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return false;
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@ -89,7 +136,8 @@ bool Adafruit_BusIO_Register::write(uint8_t *buffer, uint8_t len) {
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* @brief Write up to 4 bytes of data to the register location
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* @param value Data to write
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* @param numbytes How many bytes from 'value' to write
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* @return True on successful write (only really useful for I2C as SPI is uncheckable)
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* @return True on successful write (only really useful for I2C as SPI is
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* uncheckable)
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*/
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bool Adafruit_BusIO_Register::write(uint32_t value, uint8_t numbytes) {
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if (numbytes == 0) {
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@ -99,8 +147,11 @@ bool Adafruit_BusIO_Register::write(uint32_t value, uint8_t numbytes) {
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return false;
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}
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// store a copy
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_cached = value;
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for (int i = 0; i < numbytes; i++) {
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if (_bitorder == LSBFIRST) {
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if (_byteorder == LSBFIRST) {
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_buffer[i] = value & 0xFF;
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} else {
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_buffer[numbytes - i - 1] = value & 0xFF;
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@ -111,7 +162,8 @@ bool Adafruit_BusIO_Register::write(uint32_t value, uint8_t numbytes) {
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}
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/*!
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* @brief Read data from the register location. This does not do any error checking!
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* @brief Read data from the register location. This does not do any error
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* checking!
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* @return Returns 0xFFFFFFFF on failure, value otherwise
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*/
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uint32_t Adafruit_BusIO_Register::read(void) {
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@ -123,7 +175,7 @@ uint32_t Adafruit_BusIO_Register::read(void) {
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for (int i = 0; i < _width; i++) {
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value <<= 8;
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if (_bitorder == LSBFIRST) {
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if (_byteorder == LSBFIRST) {
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value |= _buffer[_width - i - 1];
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} else {
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value |= _buffer[i];
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@ -133,23 +185,49 @@ uint32_t Adafruit_BusIO_Register::read(void) {
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return value;
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}
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/*!
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* @brief Read cached data from last time we wrote to this register
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* @return Returns 0xFFFFFFFF on failure, value otherwise
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*/
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uint32_t Adafruit_BusIO_Register::readCached(void) { return _cached; }
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/*!
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* @brief Read a buffer of data from the register location
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* @param buffer Pointer to data to read into
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* @param len Number of bytes to read
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* @return True on successful write (only really useful for I2C as SPI is uncheckable)
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* @return True on successful write (only really useful for I2C as SPI is
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* uncheckable)
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*/
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bool Adafruit_BusIO_Register::read(uint8_t *buffer, uint8_t len) {
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uint8_t addrbuffer[2] = {(uint8_t)(_address & 0xFF), (uint8_t)(_address>>8)};
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uint8_t addrbuffer[2] = {(uint8_t)(_address & 0xFF),
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(uint8_t)(_address >> 8)};
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if (_i2cdevice) {
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return _i2cdevice->write_then_read(addrbuffer, _addrwidth, buffer, len);
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}
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if (_spidevice) {
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if (_spiregtype == ADDRESSED_OPCODE_BIT0_LOW_TO_WRITE) {
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// very special case!
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// pass the special opcode address which we set as the high byte of the
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// regaddr
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addrbuffer[0] =
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(uint8_t)(_address >> 8) | 0x01; // set bottom bit high to read
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// the 'actual' reg addr is the second byte then
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addrbuffer[1] = (uint8_t)(_address & 0xFF);
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// the address appears to be a byte longer
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return _spidevice->write_then_read(addrbuffer, _addrwidth + 1, buffer,
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len);
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}
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if (_spiregtype == ADDRBIT8_HIGH_TOREAD) {
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addrbuffer[0] |= 0x80;
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}
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if (_spiregtype == ADDRBIT8_HIGH_TOWRITE) {
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addrbuffer[0] &= ~0x80;
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}
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if (_spiregtype == AD8_HIGH_TOREAD_AD7_HIGH_TOINC) {
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addrbuffer[0] |= 0x80 | 0x40;
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}
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return _spidevice->write_then_read(addrbuffer, _addrwidth, buffer, len);
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}
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return false;
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@ -158,14 +236,15 @@ bool Adafruit_BusIO_Register::read(uint8_t *buffer, uint8_t len) {
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/*!
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* @brief Read 2 bytes of data from the register location
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* @param value Pointer to uint16_t variable to read into
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* @return True on successful write (only really useful for I2C as SPI is uncheckable)
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* @return True on successful write (only really useful for I2C as SPI is
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* uncheckable)
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*/
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bool Adafruit_BusIO_Register::read(uint16_t *value) {
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if (!read(_buffer, 2)) {
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return false;
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}
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if (_bitorder == LSBFIRST) {
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if (_byteorder == LSBFIRST) {
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*value = _buffer[1];
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*value <<= 8;
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*value |= _buffer[0];
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@ -180,7 +259,8 @@ bool Adafruit_BusIO_Register::read(uint16_t *value) {
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/*!
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* @brief Read 1 byte of data from the register location
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* @param value Pointer to uint8_t variable to read into
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* @return True on successful write (only really useful for I2C as SPI is uncheckable)
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* @return True on successful write (only really useful for I2C as SPI is
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* uncheckable)
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*/
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bool Adafruit_BusIO_Register::read(uint8_t *value) {
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if (!read(_buffer, 1)) {
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@ -197,7 +277,8 @@ bool Adafruit_BusIO_Register::read(uint8_t *value) {
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*/
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void Adafruit_BusIO_Register::print(Stream *s) {
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uint32_t val = read();
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s->print("0x"); s->print(val, HEX);
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s->print("0x");
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s->print(val, HEX);
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}
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/*!
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@ -209,14 +290,15 @@ void Adafruit_BusIO_Register::println(Stream *s) {
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s->println();
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}
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/*!
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* @brief Create a slice of the register that we can address without touching other bits
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* @brief Create a slice of the register that we can address without
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* touching other bits
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* @param reg The Adafruit_BusIO_Register which defines the bus/register
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* @param bits The number of bits wide we are slicing
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* @param shift The number of bits that our bit-slice is shifted from LSB
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*/
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Adafruit_BusIO_RegisterBits::Adafruit_BusIO_RegisterBits(Adafruit_BusIO_Register *reg, uint8_t bits, uint8_t shift) {
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Adafruit_BusIO_RegisterBits::Adafruit_BusIO_RegisterBits(
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Adafruit_BusIO_Register *reg, uint8_t bits, uint8_t shift) {
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_register = reg;
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_bits = bits;
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_shift = shift;
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@ -232,12 +314,13 @@ uint32_t Adafruit_BusIO_RegisterBits::read(void) {
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return val & ((1 << (_bits)) - 1);
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}
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/*!
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* @brief Write 4 bytes of data to the register
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* @param data The 4 bytes to write
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* @return True on successful write (only really useful for I2C as SPI is
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* uncheckable)
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*/
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void Adafruit_BusIO_RegisterBits::write(uint32_t data) {
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bool Adafruit_BusIO_RegisterBits::write(uint32_t data) {
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uint32_t val = _register->read();
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// mask off the data before writing
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@ -248,7 +331,7 @@ void Adafruit_BusIO_RegisterBits::write(uint32_t data) {
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val &= ~mask; // remove the current data at that spot
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val |= data << _shift; // and add in the new data
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_register->write(val, _register->width());
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return _register->write(val, _register->width());
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}
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/*!
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@ -256,3 +339,27 @@ void Adafruit_BusIO_RegisterBits::write(uint32_t data) {
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* @returns The data width used when initializing the register
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*/
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uint8_t Adafruit_BusIO_Register::width(void) { return _width; }
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/*!
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* @brief Set the default width of data
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* @param width the default width of data read from register
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*/
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void Adafruit_BusIO_Register::setWidth(uint8_t width) { _width = width; }
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/*!
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* @brief Set register address
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* @param address the address from register
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*/
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void Adafruit_BusIO_Register::setAddress(uint16_t address) {
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_address = address;
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}
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/*!
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* @brief Set the width of register address
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* @param address_width the width for register address
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*/
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void Adafruit_BusIO_Register::setAddressWidth(uint16_t address_width) {
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_addrwidth = address_width;
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}
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#endif // SPI exists
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@ -1,44 +1,76 @@
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#include <Adafruit_I2CDevice.h>
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#include <Adafruit_SPIDevice.h>
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#include <Arduino.h>
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#ifndef Adafruit_BusIO_Register_h
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#define Adafruit_BusIO_Register_h
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#include <Arduino.h>
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#if !defined(SPI_INTERFACES_COUNT) || \
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(defined(SPI_INTERFACES_COUNT) && (SPI_INTERFACES_COUNT > 0))
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#include <Adafruit_I2CDevice.h>
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#include <Adafruit_SPIDevice.h>
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typedef enum _Adafruit_BusIO_SPIRegType {
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ADDRBIT8_HIGH_TOREAD = 0,
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/*!<
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* ADDRBIT8_HIGH_TOREAD
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* When reading a register you must actually send the value 0x80 + register
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* address to the device. e.g. To read the register 0x0B the register value
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* 0x8B is sent and to write 0x0B is sent.
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*/
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AD8_HIGH_TOREAD_AD7_HIGH_TOINC = 1,
|
||||
|
||||
/*!<
|
||||
* ADDRBIT8_HIGH_TOWRITE
|
||||
* When writing to a register you must actually send the value 0x80 +
|
||||
* the register address to the device. e.g. To write to the register 0x19 the
|
||||
* register value 0x99 is sent and to read 0x19 is sent.
|
||||
*/
|
||||
ADDRBIT8_HIGH_TOWRITE = 2,
|
||||
|
||||
/*!<
|
||||
* ADDRESSED_OPCODE_LOWBIT_TO_WRITE
|
||||
* Used by the MCP23S series, we send 0x40 |'rd with the opcode
|
||||
* Then set the lowest bit to write
|
||||
*/
|
||||
ADDRESSED_OPCODE_BIT0_LOW_TO_WRITE = 3,
|
||||
|
||||
} Adafruit_BusIO_SPIRegType;
|
||||
|
||||
/*!
|
||||
* @brief The class which defines a device register (a location to read/write data from)
|
||||
* @brief The class which defines a device register (a location to read/write
|
||||
* data from)
|
||||
*/
|
||||
class Adafruit_BusIO_Register {
|
||||
public:
|
||||
Adafruit_BusIO_Register(Adafruit_I2CDevice *i2cdevice, uint16_t reg_addr,
|
||||
uint8_t width=1, uint8_t bitorder=LSBFIRST,
|
||||
uint8_t width = 1, uint8_t byteorder = LSBFIRST,
|
||||
uint8_t address_width = 1);
|
||||
|
||||
Adafruit_BusIO_Register(Adafruit_SPIDevice *spidevice, uint16_t reg_addr,
|
||||
Adafruit_BusIO_SPIRegType type,
|
||||
uint8_t width=1, uint8_t bitorder=LSBFIRST,
|
||||
Adafruit_BusIO_SPIRegType type, uint8_t width = 1,
|
||||
uint8_t byteorder = LSBFIRST,
|
||||
uint8_t address_width = 1);
|
||||
|
||||
Adafruit_BusIO_Register(Adafruit_I2CDevice *i2cdevice,
|
||||
Adafruit_SPIDevice *spidevice,
|
||||
Adafruit_BusIO_SPIRegType type,
|
||||
uint16_t reg_addr,
|
||||
uint8_t width=1, uint8_t bitorder=LSBFIRST,
|
||||
Adafruit_BusIO_SPIRegType type, uint16_t reg_addr,
|
||||
uint8_t width = 1, uint8_t byteorder = LSBFIRST,
|
||||
uint8_t address_width = 1);
|
||||
|
||||
bool read(uint8_t *buffer, uint8_t len);
|
||||
bool read(uint8_t *value);
|
||||
bool read(uint16_t *value);
|
||||
uint32_t read(void);
|
||||
uint32_t readCached(void);
|
||||
bool write(uint8_t *buffer, uint8_t len);
|
||||
bool write(uint32_t value, uint8_t numbytes = 0);
|
||||
|
||||
uint8_t width(void);
|
||||
|
||||
void setWidth(uint8_t width);
|
||||
void setAddress(uint16_t address);
|
||||
void setAddressWidth(uint16_t address_width);
|
||||
|
||||
void print(Stream *s = &Serial);
|
||||
void println(Stream *s = &Serial);
|
||||
|
||||
|
|
@ -47,23 +79,27 @@ class Adafruit_BusIO_Register {
|
|||
Adafruit_SPIDevice *_spidevice;
|
||||
Adafruit_BusIO_SPIRegType _spiregtype;
|
||||
uint16_t _address;
|
||||
uint8_t _width, _addrwidth, _bitorder;
|
||||
uint8_t _buffer[4]; // we wont support anything larger than uint32 for non-buffered read
|
||||
uint8_t _width, _addrwidth, _byteorder;
|
||||
uint8_t _buffer[4]; // we won't support anything larger than uint32 for
|
||||
// non-buffered read
|
||||
uint32_t _cached = 0;
|
||||
};
|
||||
|
||||
|
||||
/*!
|
||||
* @brief The class which defines a slice of bits from within a device register (a location to read/write data from)
|
||||
* @brief The class which defines a slice of bits from within a device register
|
||||
* (a location to read/write data from)
|
||||
*/
|
||||
class Adafruit_BusIO_RegisterBits {
|
||||
public:
|
||||
Adafruit_BusIO_RegisterBits(Adafruit_BusIO_Register *reg, uint8_t bits, uint8_t shift);
|
||||
void write(uint32_t value);
|
||||
Adafruit_BusIO_RegisterBits(Adafruit_BusIO_Register *reg, uint8_t bits,
|
||||
uint8_t shift);
|
||||
bool write(uint32_t value);
|
||||
uint32_t read(void);
|
||||
|
||||
private:
|
||||
Adafruit_BusIO_Register *_register;
|
||||
uint8_t _bits, _shift;
|
||||
};
|
||||
|
||||
|
||||
#endif // SPI exists
|
||||
#endif // BusIO_Register_h
|
||||
|
|
|
|||
|
|
@ -1,5 +1,4 @@
|
|||
#include <Adafruit_I2CDevice.h>
|
||||
#include <Arduino.h>
|
||||
#include "Adafruit_I2CDevice.h"
|
||||
|
||||
//#define DEBUG_SERIAL Serial
|
||||
|
||||
|
|
@ -21,8 +20,9 @@ Adafruit_I2CDevice::Adafruit_I2CDevice(uint8_t addr, TwoWire *theWire) {
|
|||
|
||||
/*!
|
||||
* @brief Initializes and does basic address detection
|
||||
* @param addr_detect Whether we should attempt to detect the I2C address with a scan.
|
||||
* 99% of sensors/devices don't mind but once in a while, they spaz on a scan!
|
||||
* @param addr_detect Whether we should attempt to detect the I2C address
|
||||
* with a scan. 99% of sensors/devices don't mind but once in a while, they spaz
|
||||
* on a scan!
|
||||
* @return True if I2C initialized and a device with the addr found
|
||||
*/
|
||||
bool Adafruit_I2CDevice::begin(bool addr_detect) {
|
||||
|
|
@ -35,6 +35,22 @@ bool Adafruit_I2CDevice::begin(bool addr_detect) {
|
|||
return true;
|
||||
}
|
||||
|
||||
/*!
|
||||
* @brief De-initialize device, turn off the Wire interface
|
||||
*/
|
||||
void Adafruit_I2CDevice::end(void) {
|
||||
// Not all port implement Wire::end(), such as
|
||||
// - ESP8266
|
||||
// - AVR core without WIRE_HAS_END
|
||||
// - ESP32: end() is implemented since 2.0.1 which is latest at the moment.
|
||||
// Temporarily disable for now to give time for user to update.
|
||||
#if !(defined(ESP8266) || \
|
||||
(defined(ARDUINO_ARCH_AVR) && !defined(WIRE_HAS_END)) || \
|
||||
defined(ARDUINO_ARCH_ESP32))
|
||||
_wire->end();
|
||||
_begun = false;
|
||||
#endif
|
||||
}
|
||||
|
||||
/*!
|
||||
* @brief Scans I2C for the address - note will give a false-positive
|
||||
|
|
@ -50,22 +66,33 @@ bool Adafruit_I2CDevice::detected(void) {
|
|||
// A basic scanner, see if it ACK's
|
||||
_wire->beginTransmission(_addr);
|
||||
if (_wire->endTransmission() == 0) {
|
||||
#ifdef DEBUG_SERIAL
|
||||
DEBUG_SERIAL.println(F("Detected"));
|
||||
#endif
|
||||
return true;
|
||||
}
|
||||
#ifdef DEBUG_SERIAL
|
||||
DEBUG_SERIAL.println(F("Not detected"));
|
||||
#endif
|
||||
return false;
|
||||
}
|
||||
|
||||
/*!
|
||||
* @brief Write a buffer or two to the I2C device. Cannot be more than maxBufferSize() bytes.
|
||||
* @param buffer Pointer to buffer of data to write
|
||||
* @brief Write a buffer or two to the I2C device. Cannot be more than
|
||||
* maxBufferSize() bytes.
|
||||
* @param buffer Pointer to buffer of data to write. This is const to
|
||||
* ensure the content of this buffer doesn't change.
|
||||
* @param len Number of bytes from buffer to write
|
||||
* @param prefix_buffer Pointer to optional array of data to write before buffer.
|
||||
* Cannot be more than maxBufferSize() bytes.
|
||||
* @param prefix_buffer Pointer to optional array of data to write before
|
||||
* buffer. Cannot be more than maxBufferSize() bytes. This is const to
|
||||
* ensure the content of this buffer doesn't change.
|
||||
* @param prefix_len Number of bytes from prefix buffer to write
|
||||
* @param stop Whether to send an I2C STOP signal on write
|
||||
* @return True if write was successful, otherwise false.
|
||||
*/
|
||||
bool Adafruit_I2CDevice::write(uint8_t *buffer, size_t len, bool stop, uint8_t *prefix_buffer, size_t prefix_len) {
|
||||
bool Adafruit_I2CDevice::write(const uint8_t *buffer, size_t len, bool stop,
|
||||
const uint8_t *prefix_buffer,
|
||||
size_t prefix_len) {
|
||||
if ((len + prefix_len) > maxBufferSize()) {
|
||||
// currently not guaranteed to work if more than 32 bytes!
|
||||
// we will need to find out if some platforms have larger
|
||||
|
|
@ -97,7 +124,10 @@ bool Adafruit_I2CDevice::write(uint8_t *buffer, size_t len, bool stop, uint8_t *
|
|||
}
|
||||
|
||||
#ifdef DEBUG_SERIAL
|
||||
DEBUG_SERIAL.print(F("\tI2CDevice Wrote: "));
|
||||
|
||||
DEBUG_SERIAL.print(F("\tI2CWRITE @ 0x"));
|
||||
DEBUG_SERIAL.print(_addr, HEX);
|
||||
DEBUG_SERIAL.print(F(" :: "));
|
||||
if ((prefix_len != 0) && (prefix_buffer != NULL)) {
|
||||
for (uint16_t i = 0; i < prefix_len; i++) {
|
||||
DEBUG_SERIAL.print(F("0x"));
|
||||
|
|
@ -109,31 +139,30 @@ bool Adafruit_I2CDevice::write(uint8_t *buffer, size_t len, bool stop, uint8_t *
|
|||
DEBUG_SERIAL.print(F("0x"));
|
||||
DEBUG_SERIAL.print(buffer[i], HEX);
|
||||
DEBUG_SERIAL.print(F(", "));
|
||||
if (len % 32 == 31) {
|
||||
if (i % 32 == 31) {
|
||||
DEBUG_SERIAL.println();
|
||||
}
|
||||
}
|
||||
DEBUG_SERIAL.println();
|
||||
#endif
|
||||
|
||||
#ifdef DEBUG_SERIAL
|
||||
DEBUG_SERIAL.print("Stop: "); DEBUG_SERIAL.println(stop);
|
||||
if (stop) {
|
||||
DEBUG_SERIAL.print("\tSTOP");
|
||||
}
|
||||
#endif
|
||||
|
||||
if (_wire->endTransmission(stop) == 0) {
|
||||
#ifdef DEBUG_SERIAL
|
||||
DEBUG_SERIAL.println("Sent!");
|
||||
DEBUG_SERIAL.println();
|
||||
// DEBUG_SERIAL.println("Sent!");
|
||||
#endif
|
||||
return true;
|
||||
} else {
|
||||
#ifdef DEBUG_SERIAL
|
||||
DEBUG_SERIAL.println("Failed to send!");
|
||||
DEBUG_SERIAL.println("\tFailed to send!");
|
||||
#endif
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/*!
|
||||
* @brief Read from I2C into a buffer from the I2C device.
|
||||
* Cannot be more than maxBufferSize() bytes.
|
||||
|
|
@ -143,17 +172,25 @@ bool Adafruit_I2CDevice::write(uint8_t *buffer, size_t len, bool stop, uint8_t *
|
|||
* @return True if read was successful, otherwise false.
|
||||
*/
|
||||
bool Adafruit_I2CDevice::read(uint8_t *buffer, size_t len, bool stop) {
|
||||
if (len > maxBufferSize()) {
|
||||
// currently not guaranteed to work if more than 32 bytes!
|
||||
// we will need to find out if some platforms have larger
|
||||
// I2C buffer sizes :/
|
||||
#ifdef DEBUG_SERIAL
|
||||
DEBUG_SERIAL.println(F("\tI2CDevice could not read such a large buffer"));
|
||||
#endif
|
||||
size_t pos = 0;
|
||||
while (pos < len) {
|
||||
size_t read_len =
|
||||
((len - pos) > maxBufferSize()) ? maxBufferSize() : (len - pos);
|
||||
bool read_stop = (pos < (len - read_len)) ? false : stop;
|
||||
if (!_read(buffer + pos, read_len, read_stop))
|
||||
return false;
|
||||
pos += read_len;
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
bool Adafruit_I2CDevice::_read(uint8_t *buffer, size_t len, bool stop) {
|
||||
#if defined(TinyWireM_h)
|
||||
size_t recv = _wire->requestFrom((uint8_t)_addr, (uint8_t)len);
|
||||
#else
|
||||
size_t recv = _wire->requestFrom((uint8_t)_addr, (uint8_t)len, (uint8_t)stop);
|
||||
#endif
|
||||
|
||||
if (recv != len) {
|
||||
// Not enough data available to fulfill our obligation!
|
||||
#ifdef DEBUG_SERIAL
|
||||
|
|
@ -168,7 +205,9 @@ bool Adafruit_I2CDevice::read(uint8_t *buffer, size_t len, bool stop) {
|
|||
}
|
||||
|
||||
#ifdef DEBUG_SERIAL
|
||||
DEBUG_SERIAL.print(F("\tI2CDevice Read: "));
|
||||
DEBUG_SERIAL.print(F("\tI2CREAD @ 0x"));
|
||||
DEBUG_SERIAL.print(_addr, HEX);
|
||||
DEBUG_SERIAL.print(F(" :: "));
|
||||
for (uint16_t i = 0; i < len; i++) {
|
||||
DEBUG_SERIAL.print(F("0x"));
|
||||
DEBUG_SERIAL.print(buffer[i], HEX);
|
||||
|
|
@ -183,7 +222,6 @@ bool Adafruit_I2CDevice::read(uint8_t *buffer, size_t len, bool stop) {
|
|||
return true;
|
||||
}
|
||||
|
||||
|
||||
/*!
|
||||
* @brief Write some data, then read some data from I2C into another buffer.
|
||||
* Cannot be more than maxBufferSize() bytes. The buffers can point to
|
||||
|
|
@ -195,7 +233,9 @@ bool Adafruit_I2CDevice::read(uint8_t *buffer, size_t len, bool stop) {
|
|||
* @param stop Whether to send an I2C STOP signal between the write and read
|
||||
* @return True if write & read was successful, otherwise false.
|
||||
*/
|
||||
bool Adafruit_I2CDevice::write_then_read(uint8_t *write_buffer, size_t write_len, uint8_t *read_buffer, size_t read_len, bool stop) {
|
||||
bool Adafruit_I2CDevice::write_then_read(const uint8_t *write_buffer,
|
||||
size_t write_len, uint8_t *read_buffer,
|
||||
size_t read_len, bool stop) {
|
||||
if (!write(write_buffer, write_len, stop)) {
|
||||
return false;
|
||||
}
|
||||
|
|
@ -203,11 +243,25 @@ bool Adafruit_I2CDevice::write_then_read(uint8_t *write_buffer, size_t write_len
|
|||
return read(read_buffer, read_len);
|
||||
}
|
||||
|
||||
|
||||
/*!
|
||||
* @brief Returns the 7-bit address of this device
|
||||
* @return The 7-bit address of this device
|
||||
*/
|
||||
uint8_t Adafruit_I2CDevice::address(void) {
|
||||
return _addr;
|
||||
uint8_t Adafruit_I2CDevice::address(void) { return _addr; }
|
||||
|
||||
/*!
|
||||
* @brief Change the I2C clock speed to desired (relies on
|
||||
* underlying Wire support!
|
||||
* @param desiredclk The desired I2C SCL frequency
|
||||
* @return True if this platform supports changing I2C speed.
|
||||
* Not necessarily that the speed was achieved!
|
||||
*/
|
||||
bool Adafruit_I2CDevice::setSpeed(uint32_t desiredclk) {
|
||||
#if (ARDUINO >= 157) && !defined(ARDUINO_STM32_FEATHER) && !defined(TinyWireM_h)
|
||||
_wire->setClock(desiredclk);
|
||||
return true;
|
||||
#else
|
||||
(void)desiredclk;
|
||||
return false;
|
||||
#endif
|
||||
}
|
||||
|
|
|
|||
|
|
@ -1,29 +1,36 @@
|
|||
#include <Wire.h>
|
||||
|
||||
#ifndef Adafruit_I2CDevice_h
|
||||
#define Adafruit_I2CDevice_h
|
||||
|
||||
#include <Arduino.h>
|
||||
#include <Wire.h>
|
||||
|
||||
///< The class which defines how we will talk to this device over I2C
|
||||
class Adafruit_I2CDevice {
|
||||
public:
|
||||
Adafruit_I2CDevice(uint8_t addr, TwoWire *theWire = &Wire);
|
||||
uint8_t address(void);
|
||||
bool begin(bool addr_detect = true);
|
||||
void end(void);
|
||||
bool detected(void);
|
||||
|
||||
bool read(uint8_t *buffer, size_t len, bool stop = true);
|
||||
bool write(uint8_t *buffer, size_t len, bool stop=true, uint8_t *prefix_buffer=NULL, size_t prefix_len=0);
|
||||
bool write_then_read(uint8_t *write_buffer, size_t write_len, uint8_t *read_buffer, size_t read_len, bool stop=false);
|
||||
bool write(const uint8_t *buffer, size_t len, bool stop = true,
|
||||
const uint8_t *prefix_buffer = NULL, size_t prefix_len = 0);
|
||||
bool write_then_read(const uint8_t *write_buffer, size_t write_len,
|
||||
uint8_t *read_buffer, size_t read_len,
|
||||
bool stop = false);
|
||||
bool setSpeed(uint32_t desiredclk);
|
||||
|
||||
/*! @brief How many bytes we can read in a transaction
|
||||
* @return The size of the Wire receive/transmit buffer */
|
||||
uint16_t maxBufferSize() { return _maxBufferSize; }
|
||||
size_t maxBufferSize() { return _maxBufferSize; }
|
||||
|
||||
private:
|
||||
uint8_t _addr;
|
||||
TwoWire *_wire;
|
||||
bool _begun;
|
||||
uint16_t _maxBufferSize;
|
||||
size_t _maxBufferSize;
|
||||
bool _read(uint8_t *buffer, size_t len, bool stop);
|
||||
};
|
||||
|
||||
#endif // Adafruit_I2CDevice_h
|
||||
|
|
|
|||
|
|
@ -1,7 +1,9 @@
|
|||
#include "Adafruit_BusIO_Register.h"
|
||||
#ifndef _ADAFRUIT_I2C_REGISTER_H_
|
||||
#define _ADAFRUIT_I2C_REGISTER_H_
|
||||
|
||||
#include <Adafruit_BusIO_Register.h>
|
||||
#include <Arduino.h>
|
||||
|
||||
typedef Adafruit_BusIO_Register Adafruit_I2CRegister;
|
||||
typedef Adafruit_BusIO_RegisterBits Adafruit_I2CRegisterBits;
|
||||
|
||||
|
|
|
|||
|
|
@ -1,17 +1,22 @@
|
|||
#include <Adafruit_SPIDevice.h>
|
||||
#include <Arduino.h>
|
||||
#include "Adafruit_SPIDevice.h"
|
||||
|
||||
#if !defined(SPI_INTERFACES_COUNT) || \
|
||||
(defined(SPI_INTERFACES_COUNT) && (SPI_INTERFACES_COUNT > 0))
|
||||
|
||||
//#define DEBUG_SERIAL Serial
|
||||
|
||||
/*!
|
||||
* @brief Create an SPI device with the given CS pin and settins
|
||||
* @brief Create an SPI device with the given CS pin and settings
|
||||
* @param cspin The arduino pin number to use for chip select
|
||||
* @param freq The SPI clock frequency to use, defaults to 1MHz
|
||||
* @param dataOrder The SPI data order to use for bits within each byte, defaults to SPI_BITORDER_MSBFIRST
|
||||
* @param dataOrder The SPI data order to use for bits within each byte,
|
||||
* defaults to SPI_BITORDER_MSBFIRST
|
||||
* @param dataMode The SPI mode to use, defaults to SPI_MODE0
|
||||
* @param theSPI The SPI bus to use, defaults to &theSPI
|
||||
*/
|
||||
Adafruit_SPIDevice::Adafruit_SPIDevice(int8_t cspin, uint32_t freq, BitOrder dataOrder, uint8_t dataMode, SPIClass *theSPI) {
|
||||
Adafruit_SPIDevice::Adafruit_SPIDevice(int8_t cspin, uint32_t freq,
|
||||
BusIOBitOrder dataOrder,
|
||||
uint8_t dataMode, SPIClass *theSPI) {
|
||||
_cs = cspin;
|
||||
_sck = _mosi = _miso = -1;
|
||||
_spi = theSPI;
|
||||
|
|
@ -23,21 +28,42 @@ Adafruit_SPIDevice::Adafruit_SPIDevice(int8_t cspin, uint32_t freq, BitOrder dat
|
|||
}
|
||||
|
||||
/*!
|
||||
* @brief Create an SPI device with the given CS pin and settins
|
||||
* @brief Create an SPI device with the given CS pin and settings
|
||||
* @param cspin The arduino pin number to use for chip select
|
||||
* @param sckpin The arduino pin number to use for SCK
|
||||
* @param misopin The arduino pin number to use for MISO, set to -1 if not used
|
||||
* @param mosipin The arduino pin number to use for MOSI, set to -1 if not used
|
||||
* @param misopin The arduino pin number to use for MISO, set to -1 if not
|
||||
* used
|
||||
* @param mosipin The arduino pin number to use for MOSI, set to -1 if not
|
||||
* used
|
||||
* @param freq The SPI clock frequency to use, defaults to 1MHz
|
||||
* @param dataOrder The SPI data order to use for bits within each byte, defaults to SPI_BITORDER_MSBFIRST
|
||||
* @param dataOrder The SPI data order to use for bits within each byte,
|
||||
* defaults to SPI_BITORDER_MSBFIRST
|
||||
* @param dataMode The SPI mode to use, defaults to SPI_MODE0
|
||||
*/
|
||||
Adafruit_SPIDevice::Adafruit_SPIDevice(int8_t cspin, int8_t sckpin, int8_t misopin, int8_t mosipin,
|
||||
uint32_t freq, BitOrder dataOrder, uint8_t dataMode) {
|
||||
Adafruit_SPIDevice::Adafruit_SPIDevice(int8_t cspin, int8_t sckpin,
|
||||
int8_t misopin, int8_t mosipin,
|
||||
uint32_t freq, BusIOBitOrder dataOrder,
|
||||
uint8_t dataMode) {
|
||||
_cs = cspin;
|
||||
_sck = sckpin;
|
||||
_miso = misopin;
|
||||
_mosi = mosipin;
|
||||
|
||||
#ifdef BUSIO_USE_FAST_PINIO
|
||||
csPort = (BusIO_PortReg *)portOutputRegister(digitalPinToPort(cspin));
|
||||
csPinMask = digitalPinToBitMask(cspin);
|
||||
if (mosipin != -1) {
|
||||
mosiPort = (BusIO_PortReg *)portOutputRegister(digitalPinToPort(mosipin));
|
||||
mosiPinMask = digitalPinToBitMask(mosipin);
|
||||
}
|
||||
if (misopin != -1) {
|
||||
misoPort = (BusIO_PortReg *)portInputRegister(digitalPinToPort(misopin));
|
||||
misoPinMask = digitalPinToBitMask(misopin);
|
||||
}
|
||||
clkPort = (BusIO_PortReg *)portOutputRegister(digitalPinToPort(sckpin));
|
||||
clkPinMask = digitalPinToBitMask(sckpin);
|
||||
#endif
|
||||
|
||||
_freq = freq;
|
||||
_dataOrder = dataOrder;
|
||||
_dataMode = dataMode;
|
||||
|
|
@ -46,24 +72,38 @@ Adafruit_SPIDevice::Adafruit_SPIDevice(int8_t cspin, int8_t sckpin, int8_t misop
|
|||
_spi = NULL;
|
||||
}
|
||||
|
||||
/*!
|
||||
* @brief Release memory allocated in constructors
|
||||
*/
|
||||
Adafruit_SPIDevice::~Adafruit_SPIDevice() {
|
||||
if (_spiSetting) {
|
||||
delete _spiSetting;
|
||||
_spiSetting = nullptr;
|
||||
}
|
||||
}
|
||||
|
||||
/*!
|
||||
* @brief Initializes SPI bus and sets CS pin high
|
||||
* @return Always returns true because there's no way to test success of SPI init
|
||||
* @return Always returns true because there's no way to test success of SPI
|
||||
* init
|
||||
*/
|
||||
bool Adafruit_SPIDevice::begin(void) {
|
||||
if (_cs != -1) {
|
||||
pinMode(_cs, OUTPUT);
|
||||
digitalWrite(_cs, HIGH);
|
||||
}
|
||||
|
||||
if (_spi) { // hardware SPI
|
||||
_spi->begin();
|
||||
} else {
|
||||
pinMode(_sck, OUTPUT);
|
||||
|
||||
if (_dataMode==SPI_MODE0) {
|
||||
digitalWrite(_sck, HIGH);
|
||||
} else {
|
||||
if ((_dataMode == SPI_MODE0) || (_dataMode == SPI_MODE1)) {
|
||||
// idle low on mode 0 and 1
|
||||
digitalWrite(_sck, LOW);
|
||||
} else {
|
||||
// idle high on mode 2 or 3
|
||||
digitalWrite(_sck, HIGH);
|
||||
}
|
||||
if (_mosi != -1) {
|
||||
pinMode(_mosi, OUTPUT);
|
||||
|
|
@ -78,7 +118,6 @@ bool Adafruit_SPIDevice::begin(void) {
|
|||
return true;
|
||||
}
|
||||
|
||||
|
||||
/*!
|
||||
* @brief Transfer (send/receive) one byte over hard/soft SPI
|
||||
* @param buffer The buffer to send and receive at the same time
|
||||
|
|
@ -87,60 +126,135 @@ bool Adafruit_SPIDevice::begin(void) {
|
|||
void Adafruit_SPIDevice::transfer(uint8_t *buffer, size_t len) {
|
||||
if (_spi) {
|
||||
// hardware SPI is easy
|
||||
|
||||
#if defined(SPARK)
|
||||
_spi->transfer(buffer, buffer, len, NULL);
|
||||
#elif defined(STM32)
|
||||
for (size_t i = 0; i < len; i++) {
|
||||
_spi->transfer(buffer[i]);
|
||||
}
|
||||
#else
|
||||
_spi->transfer(buffer, len);
|
||||
#endif
|
||||
return;
|
||||
}
|
||||
|
||||
uint8_t startbit;
|
||||
if (_dataOrder == SPI_BITORDER_LSBFIRST) {
|
||||
startbit = 0x1;
|
||||
} else {
|
||||
startbit = 0x80;
|
||||
}
|
||||
|
||||
bool towrite, lastmosi = !(buffer[0] & startbit);
|
||||
uint8_t bitdelay_us = (1000000 / _freq) / 2;
|
||||
|
||||
// for softSPI we'll do it by hand
|
||||
for (size_t i = 0; i < len; i++) {
|
||||
// software SPI
|
||||
uint8_t reply = 0;
|
||||
uint8_t send = buffer[i];
|
||||
|
||||
if (_dataOrder == SPI_BITORDER_LSBFIRST) {
|
||||
// LSB is rare, if it happens we'll just flip the bits around for them
|
||||
uint8_t temp = 0;
|
||||
for (uint8_t b=0; b<8; b++) {
|
||||
temp |= ((send >> b) & 0x1) << (7-b);
|
||||
/*
|
||||
Serial.print("\tSending software SPI byte 0x");
|
||||
Serial.print(send, HEX);
|
||||
Serial.print(" -> 0x");
|
||||
*/
|
||||
|
||||
// Serial.print(send, HEX);
|
||||
for (uint8_t b = startbit; b != 0;
|
||||
b = (_dataOrder == SPI_BITORDER_LSBFIRST) ? b << 1 : b >> 1) {
|
||||
|
||||
if (bitdelay_us) {
|
||||
delayMicroseconds(bitdelay_us);
|
||||
}
|
||||
send = temp;
|
||||
|
||||
if (_dataMode == SPI_MODE0 || _dataMode == SPI_MODE2) {
|
||||
towrite = send & b;
|
||||
if ((_mosi != -1) && (lastmosi != towrite)) {
|
||||
#ifdef BUSIO_USE_FAST_PINIO
|
||||
if (towrite)
|
||||
*mosiPort |= mosiPinMask;
|
||||
else
|
||||
*mosiPort &= ~mosiPinMask;
|
||||
#else
|
||||
digitalWrite(_mosi, towrite);
|
||||
#endif
|
||||
lastmosi = towrite;
|
||||
}
|
||||
for (int b=7; b>=0; b--) {
|
||||
reply <<= 1;
|
||||
if (_dataMode == SPI_MODE0) {
|
||||
digitalWrite(_sck, LOW);
|
||||
digitalWrite(_mosi, send & (1<<b));
|
||||
|
||||
#ifdef BUSIO_USE_FAST_PINIO
|
||||
*clkPort |= clkPinMask; // Clock high
|
||||
#else
|
||||
digitalWrite(_sck, HIGH);
|
||||
if ((_miso != -1) && digitalRead(_miso)) {
|
||||
reply |= 1;
|
||||
}
|
||||
}
|
||||
if (_dataMode == SPI_MODE1) {
|
||||
digitalWrite(_sck, HIGH);
|
||||
digitalWrite(_mosi, send & (1<<b));
|
||||
digitalWrite(_sck, LOW);
|
||||
if ((_miso != -1) && digitalRead(_miso)) {
|
||||
reply |= 1;
|
||||
#endif
|
||||
|
||||
if (bitdelay_us) {
|
||||
delayMicroseconds(bitdelay_us);
|
||||
}
|
||||
|
||||
if (_miso != -1) {
|
||||
#ifdef BUSIO_USE_FAST_PINIO
|
||||
if (*misoPort & misoPinMask) {
|
||||
#else
|
||||
if (digitalRead(_miso)) {
|
||||
#endif
|
||||
reply |= b;
|
||||
}
|
||||
}
|
||||
|
||||
if (_dataOrder == SPI_BITORDER_LSBFIRST) {
|
||||
// LSB is rare, if it happens we'll just flip the bits around for them
|
||||
uint8_t temp = 0;
|
||||
for (uint8_t b=0; b<8; b++) {
|
||||
temp |= ((reply >> b) & 0x1) << (7-b);
|
||||
}
|
||||
reply = temp;
|
||||
#ifdef BUSIO_USE_FAST_PINIO
|
||||
*clkPort &= ~clkPinMask; // Clock low
|
||||
#else
|
||||
digitalWrite(_sck, LOW);
|
||||
#endif
|
||||
} else { // if (_dataMode == SPI_MODE1 || _dataMode == SPI_MODE3)
|
||||
|
||||
#ifdef BUSIO_USE_FAST_PINIO
|
||||
*clkPort |= clkPinMask; // Clock high
|
||||
#else
|
||||
digitalWrite(_sck, HIGH);
|
||||
#endif
|
||||
|
||||
if (bitdelay_us) {
|
||||
delayMicroseconds(bitdelay_us);
|
||||
}
|
||||
|
||||
if (_mosi != -1) {
|
||||
#ifdef BUSIO_USE_FAST_PINIO
|
||||
if (send & b)
|
||||
*mosiPort |= mosiPinMask;
|
||||
else
|
||||
*mosiPort &= ~mosiPinMask;
|
||||
#else
|
||||
digitalWrite(_mosi, send & b);
|
||||
#endif
|
||||
}
|
||||
|
||||
#ifdef BUSIO_USE_FAST_PINIO
|
||||
*clkPort &= ~clkPinMask; // Clock low
|
||||
#else
|
||||
digitalWrite(_sck, LOW);
|
||||
#endif
|
||||
|
||||
if (_miso != -1) {
|
||||
#ifdef BUSIO_USE_FAST_PINIO
|
||||
if (*misoPort & misoPinMask) {
|
||||
#else
|
||||
if (digitalRead(_miso)) {
|
||||
#endif
|
||||
reply |= b;
|
||||
}
|
||||
}
|
||||
}
|
||||
if (_miso != -1) {
|
||||
buffer[i] = reply;
|
||||
}
|
||||
}
|
||||
}
|
||||
return;
|
||||
}
|
||||
|
||||
|
||||
|
||||
/*!
|
||||
* @brief Transfer (send/receive) one byte over hard/soft SPI
|
||||
* @param send The byte to send
|
||||
|
|
@ -152,29 +266,62 @@ uint8_t Adafruit_SPIDevice::transfer(uint8_t send) {
|
|||
return data;
|
||||
}
|
||||
|
||||
/*!
|
||||
* @brief Manually begin a transaction (calls beginTransaction if hardware
|
||||
* SPI)
|
||||
*/
|
||||
void Adafruit_SPIDevice::beginTransaction(void) {
|
||||
if (_spi) {
|
||||
_spi->beginTransaction(*_spiSetting);
|
||||
}
|
||||
}
|
||||
|
||||
/*!
|
||||
* @brief Manually end a transaction (calls endTransaction if hardware SPI)
|
||||
*/
|
||||
void Adafruit_SPIDevice::endTransaction(void) {
|
||||
if (_spi) {
|
||||
_spi->endTransaction();
|
||||
}
|
||||
}
|
||||
|
||||
/*!
|
||||
* @brief Write a buffer or two to the SPI device.
|
||||
* @param buffer Pointer to buffer of data to write
|
||||
* @param len Number of bytes from buffer to write
|
||||
* @param prefix_buffer Pointer to optional array of data to write before buffer.
|
||||
* @param prefix_buffer Pointer to optional array of data to write before
|
||||
* buffer.
|
||||
* @param prefix_len Number of bytes from prefix buffer to write
|
||||
* @return Always returns true because there's no way to test success of SPI writes
|
||||
* @return Always returns true because there's no way to test success of SPI
|
||||
* writes
|
||||
*/
|
||||
bool Adafruit_SPIDevice::write(uint8_t *buffer, size_t len, uint8_t *prefix_buffer, size_t prefix_len) {
|
||||
bool Adafruit_SPIDevice::write(uint8_t *buffer, size_t len,
|
||||
uint8_t *prefix_buffer, size_t prefix_len) {
|
||||
if (_spi) {
|
||||
_spi->beginTransaction(*_spiSetting);
|
||||
}
|
||||
|
||||
digitalWrite(_cs, LOW);
|
||||
setChipSelect(LOW);
|
||||
// do the writing
|
||||
#if defined(ARDUINO_ARCH_ESP32)
|
||||
if (_spi) {
|
||||
if (prefix_len > 0) {
|
||||
_spi->transferBytes(prefix_buffer, nullptr, prefix_len);
|
||||
}
|
||||
if (len > 0) {
|
||||
_spi->transferBytes(buffer, nullptr, len);
|
||||
}
|
||||
} else
|
||||
#endif
|
||||
{
|
||||
for (size_t i = 0; i < prefix_len; i++) {
|
||||
transfer(prefix_buffer[i]);
|
||||
}
|
||||
for (size_t i = 0; i < len; i++) {
|
||||
transfer(buffer[i]);
|
||||
}
|
||||
digitalWrite(_cs, HIGH);
|
||||
}
|
||||
setChipSelect(HIGH);
|
||||
|
||||
if (_spi) {
|
||||
_spi->endTransaction();
|
||||
|
|
@ -193,7 +340,7 @@ bool Adafruit_SPIDevice::write(uint8_t *buffer, size_t len, uint8_t *prefix_buff
|
|||
DEBUG_SERIAL.print(F("0x"));
|
||||
DEBUG_SERIAL.print(buffer[i], HEX);
|
||||
DEBUG_SERIAL.print(F(", "));
|
||||
if (len % 32 == 31) {
|
||||
if (i % 32 == 31) {
|
||||
DEBUG_SERIAL.println();
|
||||
}
|
||||
}
|
||||
|
|
@ -207,17 +354,20 @@ bool Adafruit_SPIDevice::write(uint8_t *buffer, size_t len, uint8_t *prefix_buff
|
|||
* @brief Read from SPI into a buffer from the SPI device.
|
||||
* @param buffer Pointer to buffer of data to read into
|
||||
* @param len Number of bytes from buffer to read.
|
||||
* @param sendvalue The 8-bits of data to write when doing the data read, defaults to 0xFF
|
||||
* @return Always returns true because there's no way to test success of SPI writes
|
||||
* @param sendvalue The 8-bits of data to write when doing the data read,
|
||||
* defaults to 0xFF
|
||||
* @return Always returns true because there's no way to test success of SPI
|
||||
* writes
|
||||
*/
|
||||
bool Adafruit_SPIDevice::read(uint8_t *buffer, size_t len, uint8_t sendvalue) {
|
||||
memset(buffer, sendvalue, len); // clear out existing buffer
|
||||
if (_spi) {
|
||||
_spi->beginTransaction(*_spiSetting);
|
||||
}
|
||||
digitalWrite(_cs, LOW);
|
||||
|
||||
setChipSelect(LOW);
|
||||
transfer(buffer, len);
|
||||
digitalWrite(_cs, HIGH);
|
||||
setChipSelect(HIGH);
|
||||
|
||||
if (_spi) {
|
||||
_spi->endTransaction();
|
||||
|
|
@ -239,26 +389,40 @@ bool Adafruit_SPIDevice::read(uint8_t *buffer, size_t len, uint8_t sendvalue) {
|
|||
return true;
|
||||
}
|
||||
|
||||
|
||||
/*!
|
||||
* @brief Write some data, then read some data from SPI into another buffer. The buffers can point to same/overlapping locations. This does not transmit-receive at the same time!
|
||||
* @brief Write some data, then read some data from SPI into another buffer.
|
||||
* The buffers can point to same/overlapping locations. This does not
|
||||
* transmit-receive at the same time!
|
||||
* @param write_buffer Pointer to buffer of data to write from
|
||||
* @param write_len Number of bytes from buffer to write.
|
||||
* @param read_buffer Pointer to buffer of data to read into.
|
||||
* @param read_len Number of bytes from buffer to read.
|
||||
* @param sendvalue The 8-bits of data to write when doing the data read, defaults to 0xFF
|
||||
* @return Always returns true because there's no way to test success of SPI writes
|
||||
* @param sendvalue The 8-bits of data to write when doing the data read,
|
||||
* defaults to 0xFF
|
||||
* @return Always returns true because there's no way to test success of SPI
|
||||
* writes
|
||||
*/
|
||||
bool Adafruit_SPIDevice::write_then_read(uint8_t *write_buffer, size_t write_len, uint8_t *read_buffer, size_t read_len, uint8_t sendvalue) {
|
||||
bool Adafruit_SPIDevice::write_then_read(uint8_t *write_buffer,
|
||||
size_t write_len, uint8_t *read_buffer,
|
||||
size_t read_len, uint8_t sendvalue) {
|
||||
if (_spi) {
|
||||
_spi->beginTransaction(*_spiSetting);
|
||||
}
|
||||
|
||||
digitalWrite(_cs, LOW);
|
||||
setChipSelect(LOW);
|
||||
// do the writing
|
||||
#if defined(ARDUINO_ARCH_ESP32)
|
||||
if (_spi) {
|
||||
if (write_len > 0) {
|
||||
_spi->transferBytes(write_buffer, nullptr, write_len);
|
||||
}
|
||||
} else
|
||||
#endif
|
||||
{
|
||||
for (size_t i = 0; i < write_len; i++) {
|
||||
transfer(write_buffer[i]);
|
||||
}
|
||||
}
|
||||
|
||||
#ifdef DEBUG_SERIAL
|
||||
DEBUG_SERIAL.print(F("\tSPIDevice Wrote: "));
|
||||
|
|
@ -291,7 +455,7 @@ bool Adafruit_SPIDevice::write_then_read(uint8_t *write_buffer, size_t write_len
|
|||
DEBUG_SERIAL.println();
|
||||
#endif
|
||||
|
||||
digitalWrite(_cs, HIGH);
|
||||
setChipSelect(HIGH);
|
||||
|
||||
if (_spi) {
|
||||
_spi->endTransaction();
|
||||
|
|
@ -299,3 +463,37 @@ bool Adafruit_SPIDevice::write_then_read(uint8_t *write_buffer, size_t write_len
|
|||
|
||||
return true;
|
||||
}
|
||||
|
||||
/*!
|
||||
* @brief Write some data and read some data at the same time from SPI
|
||||
* into the same buffer. This is basicaly a wrapper for transfer() with
|
||||
* CS-pin and transaction management.
|
||||
* This /does/ transmit-receive at the same time!
|
||||
* @param buffer Pointer to buffer of data to write/read to/from
|
||||
* @param len Number of bytes from buffer to write/read.
|
||||
* @return Always returns true because there's no way to test success of SPI
|
||||
* writes
|
||||
*/
|
||||
bool Adafruit_SPIDevice::write_and_read(uint8_t *buffer, size_t len) {
|
||||
if (_spi) {
|
||||
_spi->beginTransaction(*_spiSetting);
|
||||
}
|
||||
|
||||
setChipSelect(LOW);
|
||||
transfer(buffer, len);
|
||||
setChipSelect(HIGH);
|
||||
|
||||
if (_spi) {
|
||||
_spi->endTransaction();
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
void Adafruit_SPIDevice::setChipSelect(int value) {
|
||||
if (_cs == -1)
|
||||
return;
|
||||
digitalWrite(_cs, value);
|
||||
}
|
||||
|
||||
#endif // SPI exists
|
||||
|
|
|
|||
|
|
@ -1,62 +1,109 @@
|
|||
#include <SPI.h>
|
||||
|
||||
#ifndef Adafruit_SPIDevice_h
|
||||
#define Adafruit_SPIDevice_h
|
||||
|
||||
#include <Arduino.h>
|
||||
|
||||
#if !defined(SPI_INTERFACES_COUNT) || \
|
||||
(defined(SPI_INTERFACES_COUNT) && (SPI_INTERFACES_COUNT > 0))
|
||||
|
||||
#include <SPI.h>
|
||||
|
||||
// some modern SPI definitions don't have BitOrder enum
|
||||
#if (defined(__AVR__) && !defined(ARDUINO_ARCH_MEGAAVR)) || defined(ESP8266) || defined(TEENSYDUINO)
|
||||
#if (defined(__AVR__) && !defined(ARDUINO_ARCH_MEGAAVR)) || \
|
||||
defined(ESP8266) || defined(TEENSYDUINO) || defined(SPARK) || \
|
||||
defined(ARDUINO_ARCH_SPRESENSE) || defined(MEGATINYCORE) || \
|
||||
defined(DXCORE) || defined(ARDUINO_AVR_ATmega4809) || \
|
||||
defined(ARDUINO_AVR_ATmega4808) || defined(ARDUINO_AVR_ATmega3209) || \
|
||||
defined(ARDUINO_AVR_ATmega3208) || defined(ARDUINO_AVR_ATmega1609) || \
|
||||
defined(ARDUINO_AVR_ATmega1608) || defined(ARDUINO_AVR_ATmega809) || \
|
||||
defined(ARDUINO_AVR_ATmega808) || defined(ARDUINO_ARCH_ARC32)
|
||||
|
||||
typedef enum _BitOrder {
|
||||
SPI_BITORDER_MSBFIRST = MSBFIRST,
|
||||
SPI_BITORDER_LSBFIRST = LSBFIRST,
|
||||
} BitOrder;
|
||||
#endif
|
||||
} BusIOBitOrder;
|
||||
|
||||
// some modern SPI definitions don't have BitOrder enum and have different SPI mode defines
|
||||
#if defined(ESP32)
|
||||
#elif defined(ESP32) || defined(__ASR6501__) || defined(__ASR6502__)
|
||||
|
||||
// some modern SPI definitions don't have BitOrder enum and have different SPI
|
||||
// mode defines
|
||||
typedef enum _BitOrder {
|
||||
SPI_BITORDER_MSBFIRST = SPI_MSBFIRST,
|
||||
SPI_BITORDER_LSBFIRST = SPI_LSBFIRST,
|
||||
} BitOrder;
|
||||
#endif
|
||||
} BusIOBitOrder;
|
||||
|
||||
#else
|
||||
// Some platforms have a BitOrder enum but its named MSBFIRST/LSBFIRST
|
||||
#if defined(ARDUINO_ARCH_SAMD) || defined(__SAM3X8E__) || defined(NRF52_SERIES) || defined(ARDUINO_ARCH_ARDUINO_CORE_STM32) || defined(ARDUINO_ARCH_MEGAAVR) || defined(_STM32_DEF_)
|
||||
#define SPI_BITORDER_MSBFIRST MSBFIRST
|
||||
#define SPI_BITORDER_LSBFIRST LSBFIRST
|
||||
typedef BitOrder BusIOBitOrder;
|
||||
#endif
|
||||
|
||||
///< The class which defines how we will talk to this device over SPI
|
||||
#if defined(__AVR__) || defined(TEENSYDUINO)
|
||||
typedef volatile uint8_t BusIO_PortReg;
|
||||
typedef uint8_t BusIO_PortMask;
|
||||
#define BUSIO_USE_FAST_PINIO
|
||||
|
||||
#elif defined(ESP8266) || defined(ESP32) || defined(__SAM3X8E__) || \
|
||||
defined(ARDUINO_ARCH_SAMD)
|
||||
typedef volatile uint32_t BusIO_PortReg;
|
||||
typedef uint32_t BusIO_PortMask;
|
||||
#define BUSIO_USE_FAST_PINIO
|
||||
|
||||
#elif (defined(__arm__) || defined(ARDUINO_FEATHER52)) && \
|
||||
!defined(ARDUINO_ARCH_MBED) && !defined(ARDUINO_ARCH_RP2040)
|
||||
typedef volatile uint32_t BusIO_PortReg;
|
||||
typedef uint32_t BusIO_PortMask;
|
||||
#if !defined(__ASR6501__) && !defined(__ASR6502__)
|
||||
#define BUSIO_USE_FAST_PINIO
|
||||
#endif
|
||||
|
||||
#else
|
||||
#undef BUSIO_USE_FAST_PINIO
|
||||
#endif
|
||||
|
||||
/**! The class which defines how we will talk to this device over SPI **/
|
||||
class Adafruit_SPIDevice {
|
||||
public:
|
||||
Adafruit_SPIDevice(int8_t cspin,
|
||||
uint32_t freq=1000000,
|
||||
BitOrder dataOrder=SPI_BITORDER_MSBFIRST,
|
||||
uint8_t dataMode=SPI_MODE0,
|
||||
SPIClass *theSPI=&SPI);
|
||||
Adafruit_SPIDevice(int8_t cspin, uint32_t freq = 1000000,
|
||||
BusIOBitOrder dataOrder = SPI_BITORDER_MSBFIRST,
|
||||
uint8_t dataMode = SPI_MODE0, SPIClass *theSPI = &SPI);
|
||||
|
||||
Adafruit_SPIDevice(int8_t cspin, int8_t sck, int8_t miso, int8_t mosi,
|
||||
uint32_t freq = 1000000,
|
||||
BitOrder dataOrder=SPI_BITORDER_MSBFIRST,
|
||||
BusIOBitOrder dataOrder = SPI_BITORDER_MSBFIRST,
|
||||
uint8_t dataMode = SPI_MODE0);
|
||||
~Adafruit_SPIDevice();
|
||||
|
||||
bool begin(void);
|
||||
bool read(uint8_t *buffer, size_t len, uint8_t sendvalue = 0xFF);
|
||||
bool write(uint8_t *buffer, size_t len, uint8_t *prefix_buffer=NULL, size_t prefix_len=0);
|
||||
bool write_then_read(uint8_t *write_buffer, size_t write_len, uint8_t *read_buffer, size_t read_len, uint8_t sendvalue=0xFF);
|
||||
bool write(uint8_t *buffer, size_t len, uint8_t *prefix_buffer = NULL,
|
||||
size_t prefix_len = 0);
|
||||
bool write_then_read(uint8_t *write_buffer, size_t write_len,
|
||||
uint8_t *read_buffer, size_t read_len,
|
||||
uint8_t sendvalue = 0xFF);
|
||||
bool write_and_read(uint8_t *buffer, size_t len);
|
||||
|
||||
uint8_t transfer(uint8_t send);
|
||||
void transfer(uint8_t *buffer, size_t len);
|
||||
void beginTransaction(void);
|
||||
void endTransaction(void);
|
||||
|
||||
private:
|
||||
|
||||
SPIClass *_spi;
|
||||
SPISettings *_spiSetting;
|
||||
uint32_t _freq;
|
||||
BitOrder _dataOrder;
|
||||
BusIOBitOrder _dataOrder;
|
||||
uint8_t _dataMode;
|
||||
void setChipSelect(int value);
|
||||
|
||||
int8_t _cs, _sck, _mosi, _miso;
|
||||
#ifdef BUSIO_USE_FAST_PINIO
|
||||
BusIO_PortReg *mosiPort, *clkPort, *misoPort, *csPort;
|
||||
BusIO_PortMask mosiPinMask, misoPinMask, clkPinMask, csPinMask;
|
||||
#endif
|
||||
bool _begun;
|
||||
};
|
||||
|
||||
#endif // has SPI defined
|
||||
#endif // Adafruit_SPIDevice_h
|
||||
|
|
|
|||
|
|
@ -0,0 +1,11 @@
|
|||
# Adafruit Bus IO Library
|
||||
# https://github.com/adafruit/Adafruit_BusIO
|
||||
# MIT License
|
||||
|
||||
cmake_minimum_required(VERSION 3.5)
|
||||
|
||||
idf_component_register(SRCS "Adafruit_I2CDevice.cpp" "Adafruit_BusIO_Register.cpp" "Adafruit_SPIDevice.cpp"
|
||||
INCLUDE_DIRS "."
|
||||
REQUIRES arduino)
|
||||
|
||||
project(Adafruit_BusIO)
|
||||
|
|
@ -1,6 +1,7 @@
|
|||
# Adafruit Bus IO Library [](https://travis-ci.com/adafruit/Adafruit_BusIO)
|
||||
# Adafruit Bus IO Library [](https://github.com/adafruit/Adafruit_BusIO/actions)
|
||||
|
||||
This is a helper libary to abstract away I2C & SPI transactions and registers
|
||||
|
||||
This is a helper library to abstract away I2C & SPI transactions and registers
|
||||
|
||||
Adafruit invests time and resources providing this open source code, please support Adafruit and open-source hardware by purchasing products from Adafruit!
|
||||
|
||||
|
|
|
|||
|
|
@ -0,0 +1 @@
|
|||
COMPONENT_ADD_INCLUDEDIRS = .
|
||||
|
|
@ -28,7 +28,7 @@ void setup() {
|
|||
}
|
||||
|
||||
Adafruit_BusIO_Register id_reg = Adafruit_BusIO_Register(i2c_dev, spi_dev, ADDRBIT8_HIGH_TOREAD, 0x0F);
|
||||
uint8_t id;
|
||||
uint8_t id=0;
|
||||
id_reg.read(&id);
|
||||
Serial.print("ID register = 0x"); Serial.println(id, HEX);
|
||||
}
|
||||
|
|
|
|||
|
|
@ -0,0 +1,192 @@
|
|||
/***************************************************
|
||||
|
||||
This is an example for how to use Adafruit_BusIO_RegisterBits from Adafruit_BusIO library.
|
||||
|
||||
Designed specifically to work with the Adafruit RTD Sensor
|
||||
----> https://www.adafruit.com/products/3328
|
||||
uisng a MAX31865 RTD-to-Digital Converter
|
||||
----> https://datasheets.maximintegrated.com/en/ds/MAX31865.pdf
|
||||
|
||||
This sensor uses SPI to communicate, 4 pins are required to
|
||||
interface.
|
||||
A fifth pin helps to detect when a new conversion is ready.
|
||||
|
||||
Adafruit invests time and resources providing this open source code,
|
||||
please support Adafruit and open-source hardware by purchasing
|
||||
products from Adafruit!
|
||||
|
||||
Example written (2020/3) by Andreas Hardtung/AnHard.
|
||||
BSD license, all text above must be included in any redistribution
|
||||
****************************************************/
|
||||
|
||||
#include <Adafruit_BusIO_Register.h>
|
||||
#include <Adafruit_SPIDevice.h>
|
||||
|
||||
#define MAX31865_SPI_SPEED (5000000)
|
||||
#define MAX31865_SPI_BITORDER (SPI_BITORDER_MSBFIRST)
|
||||
#define MAX31865_SPI_MODE (SPI_MODE1)
|
||||
|
||||
#define MAX31865_SPI_CS (10)
|
||||
#define MAX31865_READY_PIN (2)
|
||||
|
||||
|
||||
Adafruit_SPIDevice spi_dev = Adafruit_SPIDevice( MAX31865_SPI_CS, MAX31865_SPI_SPEED, MAX31865_SPI_BITORDER, MAX31865_SPI_MODE, &SPI); // Hardware SPI
|
||||
// Adafruit_SPIDevice spi_dev = Adafruit_SPIDevice( MAX31865_SPI_CS, 13, 12, 11, MAX31865_SPI_SPEED, MAX31865_SPI_BITORDER, MAX31865_SPI_MODE); // Software SPI
|
||||
|
||||
// MAX31865 chip related *********************************************************************************************
|
||||
Adafruit_BusIO_Register config_reg = Adafruit_BusIO_Register(&spi_dev, 0x00, ADDRBIT8_HIGH_TOWRITE, 1, MSBFIRST);
|
||||
Adafruit_BusIO_RegisterBits bias_bit = Adafruit_BusIO_RegisterBits(&config_reg, 1, 7);
|
||||
Adafruit_BusIO_RegisterBits auto_bit = Adafruit_BusIO_RegisterBits(&config_reg, 1, 6);
|
||||
Adafruit_BusIO_RegisterBits oneS_bit = Adafruit_BusIO_RegisterBits(&config_reg, 1, 5);
|
||||
Adafruit_BusIO_RegisterBits wire_bit = Adafruit_BusIO_RegisterBits(&config_reg, 1, 4);
|
||||
Adafruit_BusIO_RegisterBits faultT_bits = Adafruit_BusIO_RegisterBits(&config_reg, 2, 2);
|
||||
Adafruit_BusIO_RegisterBits faultR_bit = Adafruit_BusIO_RegisterBits(&config_reg, 1, 1);
|
||||
Adafruit_BusIO_RegisterBits fi50hz_bit = Adafruit_BusIO_RegisterBits(&config_reg, 1, 0);
|
||||
|
||||
Adafruit_BusIO_Register rRatio_reg = Adafruit_BusIO_Register(&spi_dev, 0x01, ADDRBIT8_HIGH_TOWRITE, 2, MSBFIRST);
|
||||
Adafruit_BusIO_RegisterBits rRatio_bits = Adafruit_BusIO_RegisterBits(&rRatio_reg, 15, 1);
|
||||
Adafruit_BusIO_RegisterBits fault_bit = Adafruit_BusIO_RegisterBits(&rRatio_reg, 1, 0);
|
||||
|
||||
Adafruit_BusIO_Register maxRratio_reg = Adafruit_BusIO_Register(&spi_dev, 0x03, ADDRBIT8_HIGH_TOWRITE, 2, MSBFIRST);
|
||||
Adafruit_BusIO_RegisterBits maxRratio_bits = Adafruit_BusIO_RegisterBits(&maxRratio_reg, 15, 1);
|
||||
|
||||
Adafruit_BusIO_Register minRratio_reg = Adafruit_BusIO_Register(&spi_dev, 0x05, ADDRBIT8_HIGH_TOWRITE, 2, MSBFIRST);
|
||||
Adafruit_BusIO_RegisterBits minRratio_bits = Adafruit_BusIO_RegisterBits(&minRratio_reg, 15, 1);
|
||||
|
||||
Adafruit_BusIO_Register fault_reg = Adafruit_BusIO_Register(&spi_dev, 0x07, ADDRBIT8_HIGH_TOWRITE, 1, MSBFIRST);
|
||||
Adafruit_BusIO_RegisterBits range_high_fault_bit = Adafruit_BusIO_RegisterBits(&fault_reg, 1, 7);
|
||||
Adafruit_BusIO_RegisterBits range_low_fault_bit = Adafruit_BusIO_RegisterBits(&fault_reg, 1, 6);
|
||||
Adafruit_BusIO_RegisterBits refin_high_fault_bit = Adafruit_BusIO_RegisterBits(&fault_reg, 1, 5);
|
||||
Adafruit_BusIO_RegisterBits refin_low_fault_bit = Adafruit_BusIO_RegisterBits(&fault_reg, 1, 4);
|
||||
Adafruit_BusIO_RegisterBits rtdin_low_fault_bit = Adafruit_BusIO_RegisterBits(&fault_reg, 1, 3);
|
||||
Adafruit_BusIO_RegisterBits voltage_fault_bit = Adafruit_BusIO_RegisterBits(&fault_reg, 1, 2);
|
||||
|
||||
// Print the details of the configuration register.
|
||||
void printConfig( void ) {
|
||||
Serial.print("BIAS: "); if (bias_bit.read() ) Serial.print("ON"); else Serial.print("OFF");
|
||||
Serial.print(", AUTO: "); if (auto_bit.read() ) Serial.print("ON"); else Serial.print("OFF");
|
||||
Serial.print(", ONES: "); if (oneS_bit.read() ) Serial.print("ON"); else Serial.print("OFF");
|
||||
Serial.print(", WIRE: "); if (wire_bit.read() ) Serial.print("3"); else Serial.print("2/4");
|
||||
Serial.print(", FAULTCLEAR: "); if (faultR_bit.read() ) Serial.print("ON"); else Serial.print("OFF");
|
||||
Serial.print(", "); if (fi50hz_bit.read() ) Serial.print("50HZ"); else Serial.print("60HZ");
|
||||
Serial.println();
|
||||
}
|
||||
|
||||
// Check and print faults. Then clear them.
|
||||
void checkFaults( void ) {
|
||||
if (fault_bit.read()) {
|
||||
Serial.print("MAX: "); Serial.println(maxRratio_bits.read());
|
||||
Serial.print("VAL: "); Serial.println( rRatio_bits.read());
|
||||
Serial.print("MIN: "); Serial.println(minRratio_bits.read());
|
||||
|
||||
if (range_high_fault_bit.read() ) Serial.println("Range high fault");
|
||||
if ( range_low_fault_bit.read() ) Serial.println("Range low fault");
|
||||
if (refin_high_fault_bit.read() ) Serial.println("REFIN high fault");
|
||||
if ( refin_low_fault_bit.read() ) Serial.println("REFIN low fault");
|
||||
if ( rtdin_low_fault_bit.read() ) Serial.println("RTDIN low fault");
|
||||
if ( voltage_fault_bit.read() ) Serial.println("Voltage fault");
|
||||
|
||||
faultR_bit.write(1); // clear fault
|
||||
}
|
||||
}
|
||||
|
||||
void setup() {
|
||||
#if (MAX31865_1_READY_PIN != -1)
|
||||
pinMode(MAX31865_READY_PIN ,INPUT_PULLUP);
|
||||
#endif
|
||||
|
||||
while (!Serial) { delay(10); }
|
||||
Serial.begin(115200);
|
||||
Serial.println("SPI Adafruit_BusIO_RegisterBits test on MAX31865");
|
||||
|
||||
if (!spi_dev.begin()) {
|
||||
Serial.println("Could not initialize SPI device");
|
||||
while (1);
|
||||
}
|
||||
|
||||
// Set up for automode 50Hz. We don't care about selfheating. We want the highest possible sampling rate.
|
||||
auto_bit.write(0); // Don't switch filtermode while auto_mode is on.
|
||||
fi50hz_bit.write(1); // Set filter to 50Hz mode.
|
||||
faultR_bit.write(1); // Clear faults.
|
||||
bias_bit.write(1); // In automode we want to have the bias current always on.
|
||||
delay(5); // Wait until bias current settles down.
|
||||
// 10.5 time constants of the input RC network is required.
|
||||
// 10ms worst case for 10kω reference resistor and a 0.1µF capacitor across the RTD inputs.
|
||||
// Adafruit Module has 0.1µF and only 430/4300ω So here 0.43/4.3ms
|
||||
auto_bit.write(1); // Now we can set automode. Automatically starting first conversion.
|
||||
|
||||
// Test the READY_PIN
|
||||
#if (defined( MAX31865_READY_PIN ) && (MAX31865_READY_PIN != -1))
|
||||
int i = 0;
|
||||
while (digitalRead(MAX31865_READY_PIN) && i++ <= 100) { delay(1); }
|
||||
if (i >= 100) {
|
||||
Serial.print("ERROR: Max31865 Pin detection does not work. PIN:");
|
||||
Serial.println(MAX31865_READY_PIN);
|
||||
}
|
||||
#else
|
||||
delay(100);
|
||||
#endif
|
||||
|
||||
// Set ratio range.
|
||||
// Setting the temperatures would need some more calculation - not related to Adafruit_BusIO_RegisterBits.
|
||||
uint16_t ratio = rRatio_bits.read();
|
||||
maxRratio_bits.write( (ratio < 0x8fffu-1000u) ? ratio + 1000u : 0x8fffu );
|
||||
minRratio_bits.write( (ratio > 1000u) ? ratio - 1000u : 0u );
|
||||
|
||||
printConfig();
|
||||
checkFaults();
|
||||
}
|
||||
|
||||
void loop() {
|
||||
#if (defined( MAX31865_READY_PIN ) && (MAX31865_1_READY_PIN != -1))
|
||||
// Is conversion ready?
|
||||
if (!digitalRead(MAX31865_READY_PIN))
|
||||
#else
|
||||
// Warant conversion is ready.
|
||||
delay(21); // 21ms for 50Hz-mode. 19ms in 60Hz-mode.
|
||||
#endif
|
||||
{
|
||||
// Read ratio, calculate temperature, scale, filter and print.
|
||||
Serial.println( rRatio2C( rRatio_bits.read() ) * 100.0f, 0); // Temperature scaled by 100
|
||||
// Check, print, clear faults.
|
||||
checkFaults();
|
||||
}
|
||||
|
||||
// Do something else.
|
||||
//delay(15000);
|
||||
}
|
||||
|
||||
|
||||
// Module/Sensor related. Here Adafruit PT100 module with a 2_Wire PT100 Class C *****************************
|
||||
float rRatio2C(uint16_t ratio) {
|
||||
// A simple linear conversion.
|
||||
const float R0 = 100.0f;
|
||||
const float Rref = 430.0f;
|
||||
const float alphaPT = 0.003850f;
|
||||
const float ADCmax = (1u << 15) - 1.0f;
|
||||
const float rscale = Rref / ADCmax;
|
||||
// Measured temperature in boiling water 101.08°C with factor a = 1 and b = 0. Rref and MAX at about 22±2°C.
|
||||
// Measured temperature in ice/water bath 0.76°C with factor a = 1 and b = 0. Rref and MAX at about 22±2°C.
|
||||
//const float a = 1.0f / (alphaPT * R0);
|
||||
const float a = (100.0f/101.08f) / (alphaPT * R0);
|
||||
//const float b = 0.0f; // 101.08
|
||||
const float b = -0.76f; // 100.32 > 101.08
|
||||
|
||||
return filterRing( ((ratio * rscale) - R0) * a + b );
|
||||
}
|
||||
|
||||
// General purpose *********************************************************************************************
|
||||
#define RINGLENGTH 250
|
||||
float filterRing( float newVal ) {
|
||||
static float ring[RINGLENGTH] = { 0.0 };
|
||||
static uint8_t ringIndex = 0;
|
||||
static bool ringFull = false;
|
||||
|
||||
if ( ringIndex == RINGLENGTH ) { ringFull = true; ringIndex = 0; }
|
||||
ring[ringIndex] = newVal;
|
||||
uint8_t loopEnd = (ringFull) ? RINGLENGTH : ringIndex + 1;
|
||||
float ringSum = 0.0f;
|
||||
for (uint8_t i = 0; i < loopEnd; i++) ringSum += ring[i];
|
||||
ringIndex++;
|
||||
return ringSum / loopEnd;
|
||||
}
|
||||
|
|
@ -15,12 +15,12 @@ void setup() {
|
|||
}
|
||||
|
||||
Adafruit_BusIO_Register id_reg = Adafruit_BusIO_Register(&spi_dev, 0x0F, ADDRBIT8_HIGH_TOREAD);
|
||||
uint8_t id;
|
||||
uint8_t id = 0;
|
||||
id_reg.read(&id);
|
||||
Serial.print("ID register = 0x"); Serial.println(id, HEX);
|
||||
|
||||
Adafruit_BusIO_Register thresh_reg = Adafruit_BusIO_Register(&spi_dev, 0x0C, ADDRBIT8_HIGH_TOREAD, 2, LSBFIRST);
|
||||
uint16_t thresh;
|
||||
uint16_t thresh = 0;
|
||||
thresh_reg.read(&thresh);
|
||||
Serial.print("Initial threshold register = 0x"); Serial.println(thresh, HEX);
|
||||
|
||||
|
|
|
|||
|
|
@ -1,5 +1,5 @@
|
|||
name=Adafruit BusIO
|
||||
version=1.0.10
|
||||
version=1.11.0
|
||||
author=Adafruit
|
||||
maintainer=Adafruit <info@adafruit.com>
|
||||
sentence=This is a library for abstracting away UART, I2C and SPI interfacing
|
||||
|
|
|
|||
Loading…
Reference in New Issue