Tasmota/lib/lib_rf/RF24/utility/MRAA/spi.cpp

48 lines
1.0 KiB
C++

#include "spi.h"
#include "mraa.h"
SPI::SPI() {
mspi = NULL;
}
void SPI::begin(int busNo) {
mspi = new mraa::Spi(busNo); // init mraa spi bus, it will handle chip select internally. For CS pin wiring user must check SPI details in hardware manual
mspi->mode(mraa::SPI_MODE0);
mspi->bitPerWord(8);
mspi->frequency(8000000); // Prophet: this will try to set 8MHz, however MRAA will reset to max platform speed and syslog a message of it
}
void SPI::end() {
// Prophet: we should check for existence of mspi before deleting it
if (mspi != NULL)
delete mspi;
}
void SPI::setBitOrder(uint8_t bit_order) {
if (mspi != NULL)
mspi->lsbmode((mraa_boolean_t)bit_order); // Prophet: bit_order
}
void SPI::setDataMode(uint8_t data_mode) {
if (mspi != NULL)
mspi->mode((mraa::Spi_Mode)data_mode);
}
void SPI::setClockDivider(uint32_t spi_speed) {
if (mspi != NULL)
mspi->frequency(spi_speed);
}
void SPI::chipSelect(int csn_pin){
}
SPI::~SPI() {
// Prophet: we should call end here to free used memory and unexport SPI interface
this->end();
}