/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : main.c
  * @brief          : Main program body
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2022 STMicroelectronics.
  * All rights reserved.
  *
  * This software is licensed under terms that can be found in the LICENSE file
  * in the root directory of this software component.
  * If no LICENSE file comes with this software, it is provided AS-IS.
  *
  ******************************************************************************
  */
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include "stdio.h"
#include "string.h"


/* USER CODE END Includes */

/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */

/* USER CODE END PTD */

/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
/* USER CODE END PD */

/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */

/* USER CODE END PM */

/* Private variables ---------------------------------------------------------*/
I2C_HandleTypeDef hi2c1;

UART_HandleTypeDef huart1;

/* USER CODE BEGIN PV */

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_I2C1_Init(void);
static void MX_USART1_UART_Init(void);
/* USER CODE BEGIN PFP */
#ifdef __GNUC__
#define PUTCHAR_PROTOTYPE int __io_putchar(int ch)
#else
#define PUTCHAR_PROTOTYPE int fputc(int ch, FILE *f)
#endif

PUTCHAR_PROTOTYPE
{
  HAL_UART_Transmit(&huart1, (uint8_t *)&ch, 1, HAL_MAX_DELAY);
  return ch;
}


/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */

/* USER CODE END 0 */

/**
  * @brief  The application entry point.
  * @retval int
  */
int main(void)
{
  /* USER CODE BEGIN 1 */
	uint16_t DevAddress = 0x61<< 1;

  /* USER CODE END 1 */

  /* MCU Configuration--------------------------------------------------------*/

  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  HAL_Init();

  /* USER CODE BEGIN Init */

  /* USER CODE END Init */

  /* Configure the system clock */
  SystemClock_Config();

  /* USER CODE BEGIN SysInit */

  /* USER CODE END SysInit */

  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  MX_I2C1_Init();
  MX_USART1_UART_Init();
  /* USER CODE BEGIN 2 */


  char MSG[] = " \n\r hello from ENV4 sensor \n\r";
  printf("%s \n",MSG);


  if (HAL_OK == HAL_I2C_IsDeviceReady(&hi2c1, DevAddress, 200, 200)) {
 		 			  			 printf("I2C device Success\n");
 		 			  } else {
 		 			  		printf("I2C Failure\n");
 		 			  }

 		 			HAL_Delay(1000);

  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
    /* USER CODE END WHILE */


		//uint16_t MemAddress = 0xD100;
		uint8_t env_var[10];
		uint16_t temp[2];
		uint8_t read_buf[20];
		uint8_t SCD30_cnt_measurement[8];

		//char print_msg[200] = "";
		uint16_t ret ;
		//uint16_t command = 0x03;
		//uint16_t config;

		//uint16_t SpecAddress;

    /* USER CODE BEGIN 3 */




	  // I2C check for sensiron sensor for CO2 ,temp and humidity



  			// stop periodic measurement


	  			//SCD30_cnt_measurement[0]=0xC2;
	  			SCD30_cnt_measurement[0]=0x01;
	  			SCD30_cnt_measurement[1]=0x04;

	  		//if(HAL_OK== HAL_I2C_Master_Transmit(&hi2c1, DevAddress, (uint8_t *)SCD30_cnt_measurement, 2, HAL_MAX_DELAY))
	  		if(HAL_OK == HAL_I2C_Mem_Write(&hi2c1, DevAddress,(uint8_t *)SCD30_cnt_measurement, 0,env_var,4, HAL_MAX_DELAY))
	  		{
	  			printf("\n\r I2C Stop success\n\r");
	  		}
	  		else{

	  			printf("\n\r I2C Stop Failure\n\r");
	  		}





	  		HAL_Delay(1000);



	  			  	// soft reset
	  				//SCD30_cnt_measurement[0]=0xC2;
	  			  	SCD30_cnt_measurement[0]=0xD3;
	  			  	SCD30_cnt_measurement[1]=0x04;

	  			  //if(HAL_OK== HAL_I2C_Master_Transmit(&hi2c1, DevAddress, (uint8_t *)SCD30_cnt_measurement, 2, HAL_MAX_DELAY))
	  			  if(HAL_OK== HAL_I2C_Mem_Write(&hi2c1, DevAddress,(uint8_t *) SCD30_cnt_measurement, 0,env_var,4, HAL_MAX_DELAY))
	  			  {
	  			 	printf("I2C reset success \n\r");
	  			 } else {
	  			  	printf("I2C reset Failure\n\r");
	  			 }

	  			 HAL_Delay(2000);


	  			  // reading firmware version
	  			//SCD30_cnt_measurement[0]=0xC2;
	  			SCD30_cnt_measurement[0]=0xD1;
	  			SCD30_cnt_measurement[1]=0x00;

	  		//ret = HAL_I2C_Master_Transmit(&hi2c1, DevAddress, (uint8_t *)SCD30_cnt_measurement, 4, HAL_MAX_DELAY);
	  		ret = HAL_I2C_Mem_Write(&hi2c1, DevAddress,(uint8_t *)SCD30_cnt_measurement, 0,env_var,4, HAL_MAX_DELAY);
	  		if ( ret != HAL_OK )
	  		{
	  			printf("I2C FW write failure\n\r");

	  		} else {
	  			printf("I2C FW write success\n\r");
	  		}

	  		HAL_Delay(100);

	  		temp[0]= 0xD1;


	  		//ret = HAL_I2C_Mem_Read(&hi2c1, DevAddress, (uint16_t *)SCD30_cnt_measurement, 0,env_var,4, HAL_MAX_DELAY);

	  		ret = HAL_I2C_Master_Receive(&hi2c1, DevAddress, env_var, 4, HAL_MAX_DELAY);

	  		if ( ret != HAL_OK )
	  		{
	  			printf("I2C FW read failure\n\r");


	  		} else {
	  			printf("I2C  FW read success\n\r");
	  			printf("%x , %x \n",env_var[0],env_var[1]);
	  		}

#if 0
	  		// get ready status

	  			  	  	SCD30_cnt_measurement[0]=0x02;
	  			  	  	SCD30_cnt_measurement[1]=0x02;

	  			  	  	//ret = HAL_I2C_Master_Transmit(&hi2c1, DevAddress, SCD30_cnt_measurement, 2, HAL_MAX_DELAY);
	  			  	  	ret = HAL_I2C_Mem_Write(&hi2c1, DevAddress, SCD30_cnt_measurement, 0,env_var,4, HAL_MAX_DELAY);
	  			  	  	if ( ret != HAL_OK )
	  			  	  	{
	  			  	  		printf("\n\r I2C  get ready failure\n\r");

	  			  	  	} else {
	  			  	  		printf("I2C get ready success\n\r");
	  			  	  	}

	  			  	  	HAL_Delay(1000);


	  			  	  	// set measurement interval
	  			   	SCD30_cnt_measurement[0]=0x46;
	  			  	SCD30_cnt_measurement[1]=0x00;

	  			  	  			  	  	//ret = HAL_I2C_Master_Transmit(&hi2c1, DevAddress, SCD30_cnt_measurement, 2, HAL_MAX_DELAY);
	  			  	ret = HAL_I2C_Mem_Write(&hi2c1, DevAddress, SCD30_cnt_measurement, 0,env_var,4, HAL_MAX_DELAY);
	  			  	if ( ret != HAL_OK )
	  			  	{
	  			  			printf("\n\r I2C  set measure failure\n\r");

	  			  	} else {
	  			  	   		printf("I2C set measure success\n\r");
	  			  	}

	  			  	  			  	  	HAL_Delay(1000);




	  			  	// start periodic measurement
	  				//SCD30_cnt_measurement[0]=0xC2;
	  	  			SCD30_cnt_measurement[0]=0x00;
	  	  			SCD30_cnt_measurement[1]=0x10;

	  	  		//ret = HAL_I2C_Master_Transmit(&hi2c1, DevAddress, SCD30_cnt_measurement, 2, HAL_MAX_DELAY);
	  	  		ret = HAL_I2C_Mem_Write(&hi2c1, DevAddress, SCD30_cnt_measurement, 0,env_var,4, HAL_MAX_DELAY);
	  	  		if ( ret != HAL_OK )
	  	  		{
	  	  			printf("\n\r I2C  periodic measure Success\n\r");

	  	  		} else {
	  	  			printf("I2C periodic measure failure\n");
	  	  		}

	  	  		HAL_Delay(1000);





	  	  	// get ready status read
	  	  //SCD30_cnt_measurement[0]=0x02;
	  	  //SCD30_cnt_measurement[1]=0x02;
	  	  //ret = HAL_I2C_Mem_Read(&hi2c1, DevAddress, SCD30_cnt_measurement, 4,env_var,4, HAL_MAX_DELAY);
	  	  ret = HAL_I2C_Master_Receive(&hi2c1, DevAddress, SCD30_cnt_measurement, 4, HAL_MAX_DELAY);
	  	  if ( ret != HAL_OK )
	  	  {
	  	  			printf("\n\r I2C ready read failure\n\r");


	  	  } else {
	  	   			printf("I2C  ready read success\n\r");
	  	   		printf("%x ,%x ",env_var[0],env_var[1]);
	  	  }

	  		temp[1]= 0x00;
#endif

#if 0
	  	  //read Co2 ,temp and humidity measurement
	  	SCD30_cnt_measurement[0]=0x03;
	  	SCD30_cnt_measurement[1]=0x00;

	  	ret = HAL_I2C_Mem_Read(&hi2c1, DevAddress, &SCD30_cnt_measurement, 4,read_buf,4, HAL_MAX_DELAY);
	  	//ret = HAL_I2C_Master_Receive(&hi2c1, DevAddress, &env_var, 4, HAL_MAX_DELAY);
	  	if ( ret != HAL_OK )
	  	 {
	  		printf("\n\r I2C final measure failure\n\r");

	  	 } else {
	  		  	  printf("\n\r I2C  ready read Success\n\r");

	  		  	printf("%x ,%x ,%x ,%x ",read_buf[0],read_buf[1],read_buf[2],read_buf[3]);
	  	}

	  	HAL_Delay(1000);

	  	// stop periodic measurement
		SCD30_cnt_measurement[0]=0x01;
		SCD30_cnt_measurement[1]=0x04;

	  	ret = HAL_I2C_Master_Transmit(&hi2c1, DevAddress, SCD30_cnt_measurement, 2, HAL_MAX_DELAY);
	  		  	  	  		//ret = HAL_I2C_Mem_Write(&hi2c1, DevAddress, SCD30_cnt_measurement, 0,&env_var,4, HAL_MAX_DELAY);
	  	if ( ret != HAL_OK )
	   	{
	    		printf("\n\r I2C  stop P failure \n\r");

	  	} else {
	   	  		printf("I2C stop P Success\n");
	  	}

#endif


#if 0// for spectral sensor
	  			SpecAddress = 0x39<< 1;

	  			  			  if (HAL_OK == HAL_I2C_IsDeviceReady(&hi2c1, SpecAddress, 200, 200)) {
	  			  			  			//strcpy(print_msg, "SUCCESS HAL_I2C_Device_Read \n");
	  			  			  			//HAL_UART_Transmit(&huart1, (uint8_t*) print_msg,strlen(MSG),1000);
	  			  				  	  	  printf("I2C Success\n");
	  			  				  		//if (HAL_OK == HAL_I2C_Mem_Read(&hi2c1, DevAddress, MemAddress,I2C_MEMADD_SIZE_8BIT, (uint8_t*) &env_var[0],
	  			  				  		//  		  							0x0006, HAL_MAX_DELAY)) {
	  			  				  		//	printf("%x , %x ,%x ,%x " ,env_var[0],env_var[1],env_var[2],env_var[3]);
	  			  				  		//}
	  			  				  		//else{
	  			  				  		//	printf("I2C_Mem_read_Failure\n");
	  			  				  		//}



	  			  			  		} else {
	  			  			  		printf("I2C Failure\n");

	  			  			  		}
#endif



  }
  /* USER CODE END 3 */
}

/**
  * @brief System Clock Configuration
  * @retval None
  */
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 I2C1 Initialization Function
  * @param None
  * @retval None
  */
static void MX_I2C1_Init(void)
{

  /* USER CODE BEGIN I2C1_Init 0 */

  /* USER CODE END I2C1_Init 0 */

  /* USER CODE BEGIN I2C1_Init 1 */

  /* USER CODE END I2C1_Init 1 */
  hi2c1.Instance = I2C1;
  hi2c1.Init.ClockSpeed = 400000;
  hi2c1.Init.DutyCycle = I2C_DUTYCYCLE_2;
  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_ENABLE;
  if (HAL_I2C_Init(&hi2c1) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN I2C1_Init 2 */

  /* USER CODE END I2C1_Init 2 */

}

/**
  * @brief USART1 Initialization Function
  * @param None
  * @retval None
  */
static void MX_USART1_UART_Init(void)
{

  /* USER CODE BEGIN USART1_Init 0 */

  /* USER CODE END USART1_Init 0 */

  /* USER CODE BEGIN USART1_Init 1 */

  /* USER CODE END USART1_Init 1 */
  huart1.Instance = USART1;
  huart1.Init.BaudRate = 9600;
  huart1.Init.WordLength = UART_WORDLENGTH_8B;
  huart1.Init.StopBits = UART_STOPBITS_1;
  huart1.Init.Parity = UART_PARITY_NONE;
  huart1.Init.Mode = UART_MODE_TX_RX;
  huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
  huart1.Init.OverSampling = UART_OVERSAMPLING_16;
  if (HAL_UART_Init(&huart1) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN USART1_Init 2 */

  /* USER CODE END USART1_Init 2 */

}

/**
  * @brief GPIO Initialization Function
  * @param None
  * @retval None
  */
static void MX_GPIO_Init(void)
{

  /* GPIO Ports Clock Enable */
  __HAL_RCC_GPIOA_CLK_ENABLE();
  __HAL_RCC_GPIOB_CLK_ENABLE();

}

/* USER CODE BEGIN 4 */

/* USER CODE END 4 */

/**
  * @brief  This function is executed in case of error occurrence.
  * @retval None
  */
void Error_Handler(void)
{
  /* USER CODE BEGIN Error_Handler_Debug */
  /* User can add his own implementation to report the HAL error return state */
  __disable_irq();
  while (1)
  {
  }
  /* USER CODE END Error_Handler_Debug */
}

#ifdef  USE_FULL_ASSERT
/**
  * @brief  Reports the name of the source file and the source line number
  *         where the assert_param error has occurred.
  * @param  file: pointer to the source file name
  * @param  line: assert_param error line source number
  * @retval None
  */
void assert_failed(uint8_t *file, uint32_t line)
{
  /* USER CODE BEGIN 6 */
  /* User can add his own implementation to report the file name and line number,
     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
  /* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */