stm32f103c8t6 can通信配置代码

以下是一个基本的STM32F103C8T6的CAN通信配置代码，使用HAL库进行配置和数据传输：

#include "stm32f1xx_hal.h"

CAN_HandleTypeDef hcan;

void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_CAN_Init(void);

int main(void)
{
  HAL_Init();
  SystemClock_Config();
  MX_GPIO_Init();
  MX_CAN_Init();

  uint8_t can_tx_data[8] = {1, 2, 3, 4, 5, 6, 7, 8}; // 要发送的CAN数据
  CAN_TxHeaderTypeDef can_tx_header;
  can_tx_header.StdId = 0x123; // CAN标识符
  can_tx_header.RTR = CAN_RTR_DATA; // 发送数据帧
  can_tx_header.IDE = CAN_ID_STD; // 使用标准标识符
  can_tx_header.DLC = 8; // 发送数据长度为8字节

  while (1)
  {
    // 发送CAN数据
    if (HAL_CAN_GetState(&hcan) == HAL_CAN_STATE_READY)
    {
      HAL_CAN_AddTxMessage(&hcan, &can_tx_header, can_tx_data, &can_tx_mailbox);
    }

    // 接收CAN数据
    if (HAL_CAN_GetRxFifoFillLevel(&hcan, CAN_RX_FIFO0) > 0)
    {
      CAN_RxHeaderTypeDef can_rx_header;
      uint8_t can_rx_data[8];
      HAL_CAN_GetRxMessage(&hcan, CAN_RX_FIFO0, &can_rx_header, can_rx_data);
      // 处理接收到的CAN数据
    }
  }
}

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.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();
  }
}

static void MX_CAN_Init(void)
{
  hcan.Instance = CAN1;
  hcan.Init.Prescaler = 3; // CAN时钟分频系数
  hcan.Init.Mode = CAN_MODE_NORMAL; // 正常模式
  hcan.Init.SyncJumpWidth = CAN_SJW_1TQ; // 同步跳转宽度
  hcan.Init.TimeSeg1 = CAN_BS1_13TQ; // 时间段1
  hcan.Init.TimeSeg2 = CAN_BS2_2TQ; // 时间段2
  hcan.Init.TimeTriggeredMode = DISABLE; // 禁止时间触发模式
  hcan.Init.AutoBusOff = DISABLE; // 禁止自动总线关闭
  hcan.Init.AutoWakeUp = DISABLE; // 禁止自动唤醒
  hcan.Init.AutoRetransmission = ENABLE; // 允许自动重传
  hcan.Init.ReceiveFifoLocked = DISABLE; // 禁止接收FIFO锁定
  hcan.Init.TransmitFifoPriority = DISABLE; // 禁止发送FIFO优先级
  if (HAL_CAN_Init(&hcan) != HAL_OK)
  {
    Error_Handler();
  }
}

static void MX_GPIO_Init(void)
{
  GPIO_InitTypeDef GPIO_InitStruct = {0};

  __HAL_RCC_GPIOA_CLK_ENABLE();

  HAL_GPIO_WritePin(GPIOA, GPIO_PIN_12, GPIO_PIN_RESET);

  GPIO_InitStruct.Pin = GPIO_PIN_12;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
  HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
}

以上代码仅作为参考，具体的CAN通信配置还需要根据实际情况进行调整。