74 lines
2.5 KiB
C++
74 lines
2.5 KiB
C++
#pragma once
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#include <stdint.h>
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#include <climits>
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#include "hardware/i2c.h"
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#include "hardware/gpio.h"
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#include "pimoroni_common.hpp"
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#include "pimoroni_i2c.hpp"
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namespace pimoroni {
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class I2C {
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private:
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i2c_inst_t *i2c = PIMORONI_I2C_DEFAULT_INSTANCE;
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uint sda = I2C_DEFAULT_SDA;
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uint scl = I2C_DEFAULT_SCL;
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uint interrupt = PIN_UNUSED;
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uint32_t baudrate = I2C_DEFAULT_BAUDRATE;
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public:
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I2C(BOARD board, uint32_t baudrate = I2C_DEFAULT_BAUDRATE) : baudrate(baudrate) {
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switch(board) {
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case BREAKOUT_GARDEN:
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sda = I2C_BG_SDA;
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scl = I2C_BG_SCL;
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interrupt = I2C_BG_INT;
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break;
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case PICO_EXPLORER:
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default:
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sda = I2C_DEFAULT_SDA;
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scl = I2C_DEFAULT_SCL;
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interrupt = I2C_DEFAULT_INT;
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break;
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}
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init();
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}
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I2C(uint sda, uint scl, uint32_t baudrate = I2C_DEFAULT_BAUDRATE) : sda(sda), scl(scl), baudrate(baudrate) {
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init();
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}
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I2C() : I2C(I2C_DEFAULT_SDA, I2C_DEFAULT_SCL) {}
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~I2C() {
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i2c_deinit(i2c);
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gpio_disable_pulls(sda);
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gpio_set_function(sda, GPIO_FUNC_NULL);
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gpio_disable_pulls(scl);
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gpio_set_function(scl, GPIO_FUNC_NULL);
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}
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i2c_inst_t* pin_to_inst(uint pin);
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void reg_write_uint8(uint8_t address, uint8_t reg, uint8_t value);
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uint8_t reg_read_uint8(uint8_t address, uint8_t reg);
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uint16_t reg_read_uint16(uint8_t address, uint8_t reg);
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int16_t reg_read_int16(uint8_t address, uint8_t reg);
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uint32_t reg_read_uint32(uint8_t address, uint8_t reg);
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int write_bytes(uint8_t address, uint8_t reg, uint8_t *buf, int len);
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int read_bytes(uint8_t address, uint8_t reg, uint8_t *buf, int len);
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uint8_t get_bits(uint8_t address, uint8_t reg, uint8_t shift, uint8_t mask=0b1);
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void set_bits(uint8_t address, uint8_t reg, uint8_t shift, uint8_t mask=0b1);
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void clear_bits(uint8_t address, uint8_t reg, uint8_t shift, uint8_t mask=0b1);
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int write_blocking(uint8_t addr, const uint8_t *src, size_t len, bool nostop);
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int read_blocking(uint8_t addr, uint8_t *dst, size_t len, bool nostop);
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i2c_inst_t* get_i2c() {return i2c;}
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uint get_scl() {return scl;}
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uint get_sda() {return sda;}
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uint32_t get_baudrate() {return baudrate;}
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private:
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void init();
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};
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} |