stm32f103c8t6can输出数据程序

以下是基于HAL库的STM32F103C8T6CAN输出数据的示例代码：

首先，在CubeMX中配置CAN总线，确定使用的CAN口、波特率等参数，生成工程代码。

然后，在代码中添加以下代码：

#include "main.h"
#include "stm32f1xx_hal.h"

CAN_HandleTypeDef hcan;

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

uint8_t msg[8] = {0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88};

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

  while (1)
  {
    CAN_TxHeaderTypeDef txHeader;
    uint32_t txMailbox;
    txHeader.StdId = 0x123;
    txHeader.RTR = CAN_RTR_DATA;
    txHeader.IDE = CAN_ID_STD;
    txHeader.DLC = 8;
    HAL_CAN_AddTxMessage(&hcan, &txHeader, msg, &txMailbox);
    HAL_Delay(1000);
  }
}

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 = 4;
  hcan.Init.Mode = CAN_MODE_NORMAL;
  hcan.Init.SyncJumpWidth = CAN_SJW_1TQ;
  hcan.Init.TimeSeg1 = CAN_BS1_13TQ;
  hcan.Init.TimeSeg2 = CAN_BS2_2TQ;
  hcan.Init.TimeTriggeredMode = DISABLE;
  hcan.Init.AutoBusOff = DISABLE;
  hcan.Init.AutoWakeUp = DISABLE;
  hcan.Init.AutoRetransmission = ENABLE;
  hcan.Init.ReceiveFifoLocked = DISABLE;
  hcan.Init.TransmitFifoPriority = DISABLE;
  if (HAL_CAN_Init(&hcan) != HAL_OK)
  {
    Error_Handler();
  }
  CAN_FilterTypeDef filter;
  filter.FilterBank = 0;
  filter.FilterMode = CAN_FILTERMODE_IDMASK;
  filter.FilterScale = CAN_FILTERSCALE_32BIT;
  filter.FilterIdHigh = 0x0000;
  filter.FilterIdLow = 0x0000;
  filter.FilterMaskIdHigh = 0x0000;
  filter.FilterMaskIdLow = 0x0000;
  filter.FilterFIFOAssignment = CAN_FILTER_FIFO0;
  filter.FilterActivation = ENABLE;
  if (HAL_CAN_ConfigFilter(&hcan, &filter) != HAL_OK)
  {
    Error_Handler();
  }
}

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

  /* GPIO Ports Clock Enable */
  __HAL_RCC_GPIOC_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);
}

在这个例子中，我们使用CAN1口，波特率是125kbps，发送的数据为8个字节，标准ID为0x123。

在主循环中，我们定义一个CAN_TxHeaderTypeDef类型的变量txHeader，设置发送的数据信息，包括数据长度、标准ID等。然后调用HAL_CAN_AddTxMessage函数将数据发送给CAN总线。

在本例中，我们只是每隔1秒钟不停地发送一个固定的消息。在实际应用中，你需要根据具体需求修改发送数据的内容和频率。