[问答]

如何使用STM32F103和CAN收发器完成项目？

问答对人有帮助，内容完整，我也想知道答案 0 大家好，我一直在尝试重新编程一些模块，这些模块用于在插入 OBD 插座时将一些 CAN 数据帧传输到汽车。基本上 MCU 被编程为发送一些帧，我想用其他帧替换这些帧。这是设备的图片以及我制作的原理图： MCU是STM32F103C8T6，CAN收发器上面写着“NXP A1040/C DBA000 D64.1”。当我在 Google 中输入它时，它会返回 TJA1040 高速 CAN 收发器：https ://www.nxp.com/docs/en/data-sheet/TJA1040.pdf 。所以我做了一些研究并开始了我的项目。这是我在 MX 中使用的配置：我首先尝试使用蜂鸣器来测试基础知识并且它有效。然后我的下一步是使用 CAN 环回模式来尝试看看我是否可以发送/接收消息。这就是我挣扎的地方。我加入了下面的整个代码。它编译并运行（我使用ST链接进行调试）。它只是永远不会进入应该激活蜂鸣器的中断功能。请注意，在我的测试期间，收发器由来自 ST 链路的 5V 正确供电（我用万用表检查过）。我真的不知道我的问题是什么，任何帮助将不胜感激。提前致谢！ /* 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 / / 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 ---------------------------------------------------------/ CAN_HandleTypeDef hcan; / USER CODE BEGIN PV / / USER CODE END PV / / Private function prototypes -----------------------------------------------/ void SystemClock_Config(void); static void MX_GPIO_Init(void); static void MX_CAN_Init(void); / USER CODE BEGIN PFP / / USER CODE END PFP / / Private user code ---------------------------------------------------------/ / USER CODE BEGIN 0 / CAN_TxHeaderTypeDef TxHeader; CAN_RxHeaderTypeDef RxHeader; uint32_t Mailbox; uint8_t TxData[8]; uint8_t RxData[8]; uint8_t count = 0; void HAL_CAN_RxFifo0MsgPendingCallback(CAN_HandleTypeDef hcan) { HAL_CAN_GetRxMessage(hcan, CAN_RX_FIFO0, &RxHeader, RxData); HAL_GPIO_WritePin(GPIOA, GPIO_PIN_5, 1); HAL_Delay(100); HAL_GPIO_WritePin(GPIOA, GPIO_PIN_5, 0); } /* 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_CAN_Init(); / USER CODE BEGIN 2 / HAL_CAN_Start(&hcan); HAL_CAN_ActivateNotification(&hcan, CAN_IT_RX_FIFO0_MSG_PENDING); TxHeader.DLC = 1; TxHeader.ExtId = 0; TxHeader.IDE = CAN_ID_STD; TxHeader.RTR = CAN_RTR_DATA; TxHeader.StdId = 0x103; TxHeader.TransmitGlobalTime = DISABLE; TxData[0] = 0xf3; HAL_CAN_AddTxMessage(&hcan, &TxHeader, TxData, &Mailbox); / USER CODE END 2 / / Infinite loop / / USER CODE BEGIN WHILE / while (1) { HAL_CAN_AddTxMessage(&hcan, &TxHeader, TxData, &Mailbox); HAL_Delay(5000); / USER CODE END WHILE / / USER CODE BEGIN 3 / } / 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_HSE; RCC_OscInitStruct.HSEState = RCC_HSE_ON; RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1; RCC_OscInitStruct.HSIState = RCC_HSI_ON; RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON; RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE; RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9; 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_DIV2; RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1; if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK) { Error_Handler(); } } /* * @brief CAN Initialization Function * @param None * @retval None / static void MX_CAN_Init(void) { / USER CODE BEGIN CAN_Init 0 / / USER CODE END CAN_Init 0 / / USER CODE BEGIN CAN_Init 1 / / USER CODE END CAN_Init 1 / hcan.Instance = CAN1; hcan.Init.Prescaler = 18; hcan.Init.Mode = CAN_MODE_LOOPBACK; hcan.Init.SyncJumpWidth = CAN_SJW_1TQ; hcan.Init.TimeSeg1 = CAN_BS1_1TQ; hcan.Init.TimeSeg2 = CAN_BS2_2TQ; hcan.Init.TimeTriggeredMode = DISABLE; hcan.Init.AutoBusOff = DISABLE; hcan.Init.AutoWakeUp = DISABLE; hcan.Init.AutoRetransmission = DISABLE; hcan.Init.ReceiveFifoLocked = DISABLE; hcan.Init.TransmitFifoPriority = DISABLE; if (HAL_CAN_Init(&hcan) != HAL_OK) { Error_Handler(); } / USER CODE BEGIN CAN_Init 2 / CAN_FilterTypeDef canfilterconfig; canfilterconfig.FilterActivation = CAN_FILTER_DISABLE; canfilterconfig.FilterBank = 10; canfilterconfig.FilterFIFOAssignment = CAN_RX_FIFO0; canfilterconfig.FilterIdHigh = 0; canfilterconfig.FilterIdLow = 0x0000; canfilterconfig.FilterMaskIdHigh = 0; canfilterconfig.FilterMaskIdLow = 0x0000; canfilterconfig.FilterMode = CAN_FILTERMODE_IDMASK; canfilterconfig.FilterScale = CAN_FILTERSCALE_32BIT; canfilterconfig.SlaveStartFilterBank = 12; HAL_CAN_ConfigFilter(&hcan, &canfilterconfig); / USER CODE END CAN_Init 2 / } /* * @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_GPIOD_CLK_ENABLE(); __HAL_RCC_GPIOA_CLK_ENABLE(); /Configure GPIO pin Output Level / HAL_GPIO_WritePin(GPIOA, GPIO_PIN_5, GPIO_PIN_RESET); /Configure GPIO pin : PA5 / GPIO_InitStruct.Pin = GPIO_PIN_5; GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP; GPIO_InitStruct.Pull = GPIO_NOPULL; GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW; HAL_GPIO_Init(GPIOA, &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 ", file, line) / / USER CODE END 6 / } #endif / USE_FULL_ASSERT */ 0
2022-12-12 06:56:06　　评论淘帖0 邀请回答您可以邀请以下用户，快速回答问题 × wang21cj 该类别下有 44 个回答。邀请回答新星之火12138 该类别下有 41 个回答。邀请回答 chm5 该类别下有 39 个回答。邀请回答 hgimtk 该类别下有 33 个回答。邀请回答 HengDu 该类别下有 30 个回答。邀请回答 jghgfdssas 该类别下有 28 个回答。邀请回答 hwp0415229 该类别下有 28 个回答。邀请回答可口可甜该类别下有 26 个回答。邀请回答 kingnet6688 该类别下有 26 个回答。邀请回答颜刚YanG 该类别下有 26 个回答。邀请回答 zyh34997 该类别下有 25 个回答。邀请回答柱子图宁该类别下有 25 个回答。邀请回答 jenny042 该类别下有 25 个回答。邀请回答 kingnet9999 该类别下有 25 个回答。邀请回答 andyfly7 该类别下有 25 个回答。邀请回答麻酱该类别下有 25 个回答。邀请回答 iyfhnvbn 该类别下有 24 个回答。邀请回答哈哈神神该类别下有 24 个回答。邀请回答成长的小师弟该类别下有 24 个回答。邀请回答 gXDhn 该类别下有 24 个回答。邀请回答举报山中老虎相关推荐 • 不同STM32芯片之间的CAN通信不正常 4651 • 如何使用STM32F103做CAN的收发通信？ 1183 • 浅析STM32F103系列CAN控制器 2948 • 如果CAN收发器有问题，会不会导致stm32的CANTX信号也无法显示出波形？ 3082 • stm32f4xx的CAN对ID配置有要求吗？CAN收发器是什么型号的？ 174 • CubeMX如何完成STM32F103双串口485收发透传？ 2299 • CAN收发器的引脚CAN_RX和CAN_TX出现错误有没有办法去解决呢 364 • UJA1169TK/F - CAN收发器是否支持CAN FD？ 288 • 请问CubeMX如何完成STM32F103双串口485收发透传？ 1050 • 如何利用Ardunio IDE去完成stm32f103的串口通信呢 1048 1个回答

答案对人有帮助，有参考价值 0 请尽可能减少预分频器并增加 BS1 和 BS2 以匹配您的 500kb/s 比特率我建议例如：预分频器 = 4 位段 1 = 11 次位段 2 = 6 次 PS：如果您禁用过滤器，您将无法接收任何帧；CAN 单元将确认接收到的帧，但帧的数据不会进入您的 FIFO。

2022-12-12 10:55:33 评论举报潘琳