#include "main.h"
#include "gw_grayscale_sensor.h"

#define GW_GRAY_ADDR GW_GRAY_ADDR_DEF

I2C_HandleTypeDef hi2c1;

void SystemClock_Config(void);
static void MX_I2C1_Init(void);

int main(void)
{
	int ret_transmit, ret_receive;
	uint8_t recv_value = 0;
	uint8_t i2c_cmd;
	uint8_t sensor_arr[8];

	HAL_Init();
	SystemClock_Config();
	MX_I2C1_Init();

	/* 只要第一个探头的模拟数据 */
	i2c_cmd = GW_GRAY_ANALOG(1);
	// i2c_cmd = GW_GRAY_ANALOG(3); 第三个探头的数据

	ret_transmit = HAL_I2C_Master_Transmit(&hi2c1, GW_GRAY_ADDR << 1, &i2c_cmd, 1, 100);
	if (ret_transmit != HAL_OK) {
		Error_Handler();		// i2c 错误
	}

	while (1) {
		ret_receive = HAL_I2C_Master_Receive(&hi2c1, &recv_value, 1, 100);
		if (ret_receive) {
			Error_Handler(); //i2c 错误
		}

		// 由于设置了单发模拟数据模式 所以每次读取都是探头1的数据
		// recv_value 为 探头1的模拟数据
	}
}


/**
 * @brief 时钟配置
 */
void SystemClock_Config(void)
{
	RCC_OscInitTypeDef RCC_OscInitStruct = {0};
	RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

	/** Initializes the RCC Oscillators according to the specified parameters
	 * in the RCC_OscInitTypeDef structure.
	 */
	RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
	RCC_OscInitStruct.HSIState = RCC_HSI_ON;
	RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
	RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
	if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) {
		Error_Handler();
	}

	/** Initializes the CPU, AHB and APB buses clocks
	 */
	RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
	                              |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
	RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSI;
	RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
	RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
	RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;

	if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0) != HAL_OK) {
		Error_Handler();
	}
}

/**
 * @brief I2C初始化
 */
static void MX_I2C1_Init(void)
{
	/* 主设备设置 */
	hi2c1.Instance = I2C1; /* i2c通道 */
	hi2c1.Init.ClockSpeed = 100000;
	hi2c1.Init.DutyCycle = I2C_DUTYCYCLE_2; /* i2c 占空比=50% 1:1, I2C_DUTYCYCLE_16_9 用于快速i2c模式 */

	/* 从设备设置(不用管) */
	hi2c1.Init.OwnAddress1 = 0;
	hi2c1.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
	hi2c1.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
	hi2c1.Init.OwnAddress2 = 0;
	hi2c1.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
	hi2c1.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;

	/* 是否初始化成功 */
	if (HAL_I2C_Init(&hi2c1) != HAL_OK) {
		Error_Handler();
	}
}

/* 出错啦 */
void Error_Handler(void)
{
	__disable_irq();
	while (1) {

	}
}