/**
 * @file i2c.c
 * @author marisa (marisa@fwmari.net)
 * @brief
 * @version 0.1
 * @date 2024-05-06
 *
 * @copyright Copyright (c) 2024
 *
 */

#include "i2c.h"

i2c_master_bus_handle_t m_handle = NULL;

static bool busInitialized = false;

i2c_master_bus_handle_t i2cInitMasterBus(uint8_t sda, uint8_t scl) {
  i2c_master_bus_config_t i2cMasterConfig = {
      .clk_source                   = I2C_CLK_SRC_DEFAULT,
      .i2c_port                     = I2C_NUM_0,
      .scl_io_num                   = scl,
      .sda_io_num                   = sda,
      .glitch_ignore_cnt            = 7,
      .flags.enable_internal_pullup = true,
  };

  ESP_ERROR_CHECK(i2c_new_master_bus(&i2cMasterConfig, &m_handle));
  busInitialized = true;
  return m_handle;
}

i2c_master_dev_handle_t i2cInitDevice(uint8_t addr, uint32_t speed) {
  assert(busInitialized);

  i2c_device_config_t deviceCfg = {
      .dev_addr_length = I2C_ADDR_BIT_LEN_7,
      .device_address  = addr,
      .scl_speed_hz    = speed,
  };

  i2c_master_dev_handle_t devHandle;
  ESP_ERROR_CHECK(i2c_master_bus_add_device(m_handle, &deviceCfg, &devHandle));

  return devHandle;
}