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#include "main.h" #include "stm32h7xx.h" #include <stdio.h> #include <stdlib.h> #include <string.h> TIM_HandleTypeDef htim6; UART_HandleTypeDef huart3; void SystemClock_Config(void); static void MX_GPIO_Init(void); static void MX_USART3_UART_Init(void); static void MX_TIM6_Init(void); int speed = 0; char buffer[50]; char user_input; void start_system(void); int main(void) { HAL_Init(); SystemClock_Config(); MX_GPIO_Init(); MX_USART3_UART_Init(); MX_TIM6_Init(); start_system(); // Main loop while (1) { // System runs based on the speed timer } } void start_system(void) { while (1) { HAL_UART_Transmit( &huart3, (uint8_t *)"Do you want to start the system? Y/N\r\n", 38, 10); HAL_UART_Receive(&huart3, (uint8_t *)&user_input, 1, HAL_MAX_DELAY); if (user_input == 'Y' || user_input == 'y') { HAL_UART_Transmit(&huart3, (uint8_t *)"System started\r\n", 16, 10); HAL_TIM_Base_Start_IT(&htim6); break; // Exit the loop to start the speed timer } else if (user_input == 'N' || user_input == 'n') { HAL_UART_Transmit(&huart3, (uint8_t *)"System not started\r\n", 20, 10); } else { HAL_UART_Transmit(&huart3, (uint8_t *)"Invalid input from user\r\n", 25, 10); } } } void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim) { if (htim == &htim6) { speed += 4; int length = sprintf(buffer, "Speed: %d km/h\r\n", speed); HAL_UART_Transmit(&huart3, (uint8_t *)buffer, length, 10); if (speed == 20) { HAL_TIM_Base_Stop_IT(&htim6); HAL_UART_Transmit( &huart3, (uint8_t *)"Do you want to override the system? Y/N\r\n", 41, 10); HAL_UART_Receive(&huart3, (uint8_t *)&user_input, 1, HAL_MAX_DELAY); if (user_input == 'Y' || user_input == 'y') { HAL_UART_Transmit(&huart3, (uint8_t *)"Seatbelt is applied\r\n", 21, 10); HAL_TIM_Base_Start_IT(&htim6); } else if (user_input == 'N' || user_input == 'n') { HAL_UART_Transmit(&huart3, (uint8_t *)"No seatbelt is fastened\r\n", 25, 10); HAL_TIM_Base_Start_IT(&htim6); } else { HAL_UART_Transmit(&huart3, (uint8_t *)"Invalid input from user\r\n", 25, 10); } } if (speed == 40) { HAL_TIM_Base_Stop_IT(&htim6); if (user_input == 'N' || user_input == 'n') { HAL_UART_Transmit(&huart3, (uint8_t *)"ABS applied.\r\n", 15, 10); } else { HAL_UART_Transmit(&huart3, (uint8_t *)"ABS not applied.\r\n", 18, 10); } speed = 0; start_system(); // Ask the user if they want to start the system again } } } void SystemClock_Config(void) { RCC_OscInitTypeDef RCC_OscInitStruct = {0}; RCC_ClkInitTypeDef RCC_ClkInitStruct = {0}; /*AXI clock gating */ RCC->CKGAENR = 0xFFFFFFFF; /** Supply configuration update enable */ HAL_PWREx_ConfigSupply(PWR_DIRECT_SMPS_SUPPLY); /** Configure the main internal regulator output voltage */ __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE0); while (!__HAL_PWR_GET_FLAG(PWR_FLAG_VOSRDY)) { } /** Initializes the RCC Oscillators according to the specified parameters * in the RCC_OscInitTypeDef structure. */ RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI48 | RCC_OSCILLATORTYPE_HSE; RCC_OscInitStruct.HSEState = RCC_HSE_BYPASS; RCC_OscInitStruct.HSI48State = RCC_HSI48_ON; RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON; RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE; RCC_OscInitStruct.PLL.PLLM = 1; RCC_OscInitStruct.PLL.PLLN = 20; RCC_OscInitStruct.PLL.PLLP = 2; RCC_OscInitStruct.PLL.PLLQ = 4; RCC_OscInitStruct.PLL.PLLR = 2; RCC_OscInitStruct.PLL.PLLRGE = RCC_PLL1VCIRANGE_3; RCC_OscInitStruct.PLL.PLLVCOSEL = RCC_PLL1VCOWIDE; RCC_OscInitStruct.PLL.PLLFRACN = 0; 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_CLOCKTYPE_D3PCLK1 | RCC_CLOCKTYPE_D1PCLK1; RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK; RCC_ClkInitStruct.SYSCLKDivider = RCC_SYSCLK_DIV1; RCC_ClkInitStruct.AHBCLKDivider = RCC_HCLK_DIV1; RCC_ClkInitStruct.APB3CLKDivider = RCC_APB3_DIV1; RCC_ClkInitStruct.APB1CLKDivider = RCC_APB1_DIV1; RCC_ClkInitStruct.APB2CLKDivider = RCC_APB2_DIV1; RCC_ClkInitStruct.APB4CLKDivider = RCC_APB4_DIV1; if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1) != HAL_OK) { Error_Handler(); } } /** * @brief TIM6 Initialization Function * @param None * @retval None */ static void MX_TIM6_Init(void) { /* USER CODE BEGIN TIM6_Init 0 */ /* USER CODE END TIM6_Init 0 */ TIM_MasterConfigTypeDef sMasterConfig = {0}; /* USER CODE BEGIN TIM6_Init 1 */ /* USER CODE END TIM6_Init 1 */ htim6.Instance = TIM6; htim6.Init.Prescaler = 40000; htim6.Init.CounterMode = TIM_COUNTERMODE_UP; htim6.Init.Period = 6000 - 1; htim6.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE; if (HAL_TIM_Base_Init(&htim6) != HAL_OK) { Error_Handler(); } sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET; sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE; if (HAL_TIMEx_MasterConfigSynchronization(&htim6, &sMasterConfig) != HAL_OK) { Error_Handler(); } /* USER CODE BEGIN TIM6_Init 2 */ /* USER CODE END TIM6_Init 2 */ } /** * @brief USART3 Initialization Function * @param None * @retval None */ static void MX_USART3_UART_Init(void) { /* USER CODE BEGIN USART3_Init 0 */ /* USER CODE END USART3_Init 0 */ /* USER CODE BEGIN USART3_Init 1 */ /* USER CODE END USART3_Init 1 */ huart3.Instance = USART3; huart3.Init.BaudRate = 115200; huart3.Init.WordLength = UART_WORDLENGTH_8B; huart3.Init.StopBits = UART_STOPBITS_1; huart3.Init.Parity = UART_PARITY_NONE; huart3.Init.Mode = UART_MODE_TX_RX; huart3.Init.HwFlowCtl = UART_HWCONTROL_NONE; huart3.Init.OverSampling = UART_OVERSAMPLING_16; huart3.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE; huart3.Init.ClockPrescaler = UART_PRESCALER_DIV1; huart3.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT; if (HAL_UART_Init(&huart3) != HAL_OK) { Error_Handler(); } if (HAL_UARTEx_SetTxFifoThreshold(&huart3, UART_TXFIFO_THRESHOLD_1_8) != HAL_OK) { Error_Handler(); } if (HAL_UARTEx_SetRxFifoThreshold(&huart3, UART_RXFIFO_THRESHOLD_1_8) != HAL_OK) { Error_Handler(); } if (HAL_UARTEx_DisableFifoMode(&huart3) != HAL_OK) { Error_Handler(); } /* USER CODE BEGIN USART3_Init 2 */ /* USER CODE END USART3_Init 2 */ } /** * @brief USB_OTG_HS Initialization Function * @param None * @retval None */ /** * @brief GPIO Initialization Function * @param None * @retval None */ static void MX_GPIO_Init(void) { GPIO_InitTypeDef GPIO_InitStruct = {0}; /* GPIO Ports Clock Enable */ __HAL_RCC_GPIOC_CLK_ENABLE(); __HAL_RCC_GPIOF_CLK_ENABLE(); __HAL_RCC_GPIOH_CLK_ENABLE(); __HAL_RCC_GPIOB_CLK_ENABLE(); __HAL_RCC_GPIOD_CLK_ENABLE(); __HAL_RCC_GPIOG_CLK_ENABLE(); __HAL_RCC_GPIOA_CLK_ENABLE(); __HAL_RCC_GPIOE_CLK_ENABLE(); /*Configure GPIO pin Output Level */ HAL_GPIO_WritePin(USB_FS_PWR_EN_GPIO_Port, USB_FS_PWR_EN_Pin, GPIO_PIN_RESET); /*Configure GPIO pin Output Level */ HAL_GPIO_WritePin(GPIOB, LD1_Pin | LD3_Pin, GPIO_PIN_RESET); /*Configure GPIO pin Output Level */ HAL_GPIO_WritePin(LD2_GPIO_Port, LD2_Pin, GPIO_PIN_RESET); /*Configure GPIO pin : B1_Pin */ GPIO_InitStruct.Pin = B1_Pin; GPIO_InitStruct.Mode = GPIO_MODE_INPUT; GPIO_InitStruct.Pull = GPIO_NOPULL; HAL_GPIO_Init(B1_GPIO_Port, &GPIO_InitStruct); /*Configure GPIO pin : USB_FS_PWR_EN_Pin */ GPIO_InitStruct.Pin = USB_FS_PWR_EN_Pin; GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP; GPIO_InitStruct.Pull = GPIO_NOPULL; GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW; HAL_GPIO_Init(USB_FS_PWR_EN_GPIO_Port, &GPIO_InitStruct); /*Configure GPIO pins : LD1_Pin LD3_Pin */ GPIO_InitStruct.Pin = LD1_Pin | LD3_Pin; GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP; GPIO_InitStruct.Pull = GPIO_NOPULL; GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW; HAL_GPIO_Init(GPIOB, &GPIO_InitStruct); /*Configure GPIO pin : USB_FS_OVCR_Pin */ GPIO_InitStruct.Pin = USB_FS_OVCR_Pin; GPIO_InitStruct.Mode = GPIO_MODE_IT_RISING; GPIO_InitStruct.Pull = GPIO_NOPULL; HAL_GPIO_Init(USB_FS_OVCR_GPIO_Port, &GPIO_InitStruct); /*Configure GPIO pin : USB_FS_VBUS_Pin */ GPIO_InitStruct.Pin = USB_FS_VBUS_Pin; GPIO_InitStruct.Mode = GPIO_MODE_INPUT; GPIO_InitStruct.Pull = GPIO_NOPULL; HAL_GPIO_Init(USB_FS_VBUS_GPIO_Port, &GPIO_InitStruct); /*Configure GPIO pin : USB_FS_ID_Pin */ GPIO_InitStruct.Pin = USB_FS_ID_Pin; GPIO_InitStruct.Mode = GPIO_MODE_AF_PP; GPIO_InitStruct.Pull = GPIO_NOPULL; GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW; GPIO_InitStruct.Alternate = GPIO_AF10_OTG1_HS; HAL_GPIO_Init(USB_FS_ID_GPIO_Port, &GPIO_InitStruct); /*Configure GPIO pins : USB_FS_N_Pin USB_FS_P_Pin */ GPIO_InitStruct.Pin = USB_FS_N_Pin | USB_FS_P_Pin; GPIO_InitStruct.Mode = GPIO_MODE_AF_PP; GPIO_InitStruct.Pull = GPIO_NOPULL; GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW; HAL_GPIO_Init(GPIOA, &GPIO_InitStruct); /*Configure GPIO pin : LD2_Pin */ GPIO_InitStruct.Pin = LD2_Pin; GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP; GPIO_InitStruct.Pull = GPIO_NOPULL; GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW; HAL_GPIO_Init(LD2_GPIO_Port, &GPIO_InitStruct); } /* 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 */
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