/* 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"
#include "can.h"
#include "i2c.h"
#include "usart.h"
#include "gpio.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include "lcd_i2c.h"
#include <stdio.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 ---------------------------------------------------------*/

/* USER CODE BEGIN PV */
struct lcd_disp disp;
/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
/* USER CODE BEGIN PFP */

/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
CAN_TxHeaderTypeDef TxHeader;
CAN_RxHeaderTypeDef RxHeader;

uint8_t TxData[8];
uint8_t RxData[8];

uint32_t TxMailbox;

int datacheck = 0;

void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
{
	if (GPIO_Pin == Green_BUTTON_Pin)
	{
		TxData[0] = 1; // any data will toggle LED
		TxData[1] = 0;
		HAL_CAN_AddTxMessage(&hcan1, &TxHeader, TxData, &TxMailbox);
		while (HAL_CAN_IsTxMessagePending(&hcan1, TxMailbox))
		{
		}
	}
}

void HAL_CAN_RxFifo0MsgPendingCallback(CAN_HandleTypeDef *hcan)
{
	HAL_CAN_GetRxMessage(hcan, CAN_RX_FIFO0, &RxHeader, RxData);
	if (RxHeader.DLC == 2)
	{
		datacheck = 1;
	}
}
/* USER CODE END 0 */

/**
 * @brief  The application entry point.
 * @retval int
 */
int main(void)
{
	/* USER CODE BEGIN 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_USART2_UART_Init();
	MX_CAN1_Init();
	MX_I2C1_Init();
	/* USER CODE BEGIN 2 */
	HAL_CAN_Start(&hcan1);

	// Activate the notification
	HAL_CAN_ActivateNotification(&hcan1, CAN_IT_RX_FIFO0_MSG_PENDING);

	TxHeader.DLC = 2;  // data length
	TxHeader.IDE = CAN_ID_STD;
	TxHeader.RTR = CAN_RTR_DATA;
	TxHeader.StdId = 0x124;  // ID of node B
	//Test display
	disp.addr = (0x27 << 1);
	disp.bl = true;
	lcd_init(&disp);
	lcd_prog(&disp);

	sprintf((char*) disp.f_line, "DS3231 over CAN");
	//sprintf((char *)disp.s_line, "%cd%cb%co", '\x8', '\x8', '\x4');
	sprintf((char*) disp.s_line, "Waiting...");
	lcd_display(&disp);

	/* USER CODE END 2 */

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

		/* USER CODE BEGIN 3 */
		if (datacheck)
		{
			HAL_GPIO_TogglePin(Green_LED_GPIO_Port, Green_LED_Pin);
			if (RxData[1] < 10)
			{
				sprintf((char*) disp.s_line, "      %d:0%d", RxData[0],
						RxData[1]);
			}
			else
			{
				sprintf((char*) disp.s_line, "      %d:%d", RxData[0],
						RxData[1]);
			}
			lcd_display(&disp);
			datacheck = 0;
		}
	}
	/* USER CODE END 3 */
}

/**
 * @brief System Clock Configuration
 * @retval None
 */
void SystemClock_Config(void)
{
	RCC_OscInitTypeDef RCC_OscInitStruct =
	{ 0 };
	RCC_ClkInitTypeDef RCC_ClkInitStruct =
	{ 0 };

	/** Configure the main internal regulator output voltage
	 */
	if (HAL_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE1) != HAL_OK)
	{
		Error_Handler();
	}

	/** Configure LSE Drive Capability
	 */
	HAL_PWR_EnableBkUpAccess();
	__HAL_RCC_LSEDRIVE_CONFIG(RCC_LSEDRIVE_LOW);

	/** Initializes the RCC Oscillators according to the specified parameters
	 * in the RCC_OscInitTypeDef structure.
	 */
	RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSE
			| RCC_OSCILLATORTYPE_MSI;
	RCC_OscInitStruct.LSEState = RCC_LSE_ON;
	RCC_OscInitStruct.MSIState = RCC_MSI_ON;
	RCC_OscInitStruct.MSICalibrationValue = 0;
	RCC_OscInitStruct.MSIClockRange = RCC_MSIRANGE_6;
	RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
	RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_MSI;
	RCC_OscInitStruct.PLL.PLLM = 1;
	RCC_OscInitStruct.PLL.PLLN = 16;
	RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV7;
	RCC_OscInitStruct.PLL.PLLQ = RCC_PLLQ_DIV2;
	RCC_OscInitStruct.PLL.PLLR = RCC_PLLR_DIV2;
	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_PLLCLK;
	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_1) != HAL_OK)
	{
		Error_Handler();
	}

	/** Enable MSI Auto calibration
	 */
	HAL_RCCEx_EnableMSIPLLMode();
}

/* 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 */
