i2c.h

#pragma once
#include <libopencm3/stm32/gpio.h>
#include <libopencm3/stm32/i2c.h>
#include <libopencm3/stm32/rcc.h>

#include "usart.h"
#include "utils.h"

typedef struct i2c_device {
  uint32_t i2c;
  uint8_t address;
} i2c_device;

error_t i2c_check_arguments(uint32_t i2c, uint8_t device_address);

void i2c1_init(enum i2c_speeds speed);

error_t i2c_master_transaction_write_read(uint32_t i2c, uint8_t device_address,
                                          uint8_t *tx_buffer,
                                          uint32_t bytes_to_write,
                                          uint8_t *rx_buffer,
                                          uint32_t bytes_to_read);

error_t i2c_master_write(uint32_t i2c, uint8_t device_address,
                         uint8_t *tx_buffer, uint32_t bytes_to_write);

void i2c_scan_bus(uint32_t i2c);
extern bool i2c_check_presence(uint32_t i2c, uint8_t addr)
    __attribute__((weak));