STM32L052C8芯片串口接收问题

RobertHand · 发表于 2017-5-31 21:24:45

调试了2天，串口接收怎么都调不通，头大，求大神帮忙。还有顺便问一下这个芯片的系统时钟怎么看，不知道怎么跳定时器的分频那些。代码贴到下面
void Usart_Camera_Init(void)
{
  GPIO_InitTypeDef  GPIO_InitStruct;

  /*##-1- Enable peripherals and GPIO Clocks #################################*/
  /* Enable GPIO TX/RX clock */
  __HAL_RCC_GPIOA_CLK_ENABLE();
  /* Enable USART1 clock */
  __HAL_RCC_USART1_CLK_ENABLE();

  /*##-2- Configure peripheral GPIO ##########################################*/
  /* UART TX GPIO pin configuration  */
  GPIO_InitStruct.Pin    = GPIO_PIN_9;
  GPIO_InitStruct.Mode    = GPIO_MODE_AF_PP;
  GPIO_InitStruct.Pull    = GPIO_PULLUP;
  GPIO_InitStruct.Speed    = GPIO_SPEED_FAST;
  GPIO_InitStruct.Alternate = GPIO_AF4_USART1;

HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

  /* UART RX GPIO pin configuration  */
GPIO_InitStruct.Pin = GPIO_PIN_10;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
   GPIO_InitStruct.Pull = GPIO_PULLUP ;
   GPIO_InitStruct.Alternate = GPIO_AF4_USART1;
   HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

HAL_USART_DeInit(&USART1_HandleStructure);
   USART1_HandleStructure.Instance = USART1;
   USART1_HandleStructure.Init.BaudRate = 115200; //2¨ìØÂê
   USART1_HandleStructure.Init.WordLength = USART_WORDLENGTH_8B; //×Ö3¤8Î»
   USART1_HandleStructure.Init.StopBits = USART_STOPBITS_1; //ò»¸öí￡Ö1Î»
   USART1_HandleStructure.Init.Parity = USART_PARITY_NONE; //ÎTÆæÅ¼D￡Ñé
   USART1_HandleStructure.Init.Mode = USART_MODE_TX_RX; //êÕ·￠Ä￡ê½
HAL_USART_Init(&USART1_HandleStructure);
__HAL_USART_ENABLE(&USART1_HandleStructure);
  /*##-3- Configure the NVIC for UART ########################################*/
  /* NVIC for USART1 */
  HAL_NVIC_SetPriority(USART1_IRQn, 0, 1);
  HAL_NVIC_EnableIRQ(USART1_IRQn);
__HAL_USART_ENABLE_IT(&USART1_HandleStructure, USART_IT_RXNE);
//__HAL_USART_ENABLE_IT(&USART1_HandleStructure, USART_IT_TC);
//HAL_USART_Receive_IT(&USART1_HandleStructure, (u32)Usart1_Rxbuffer, 1);

}

void USART1_IRQHandler(void)
{
u8 data;

Work_Led_On();
//Work_Led_Off();
//Send_Data_To_Camera((u8*)"nima",4);
if (__HAL_USART_GET_IT(&USART1_HandleStructure, USART_IT_TC) != RESET)
{

//__HAL_USART_CLEAR_IT(&USART1_HandleStructure, USART_CLEAR_TCF);
//Send_Data_To_Camera((u8*)"nima", 4);
}
if (__HAL_USART_GET_IT(&USART1_HandleStructure, USART_IT_RXNE) != RESET)
{
data = USART1->RDR;

Send_Data_To_Camera((u8*)"wocao", 5);
}

RobertHand · 发表于 2017-5-31 21:28:31

是51C8 打错芯片型号

mochou99 · 发表于 2017-10-1 23:00:24

兄弟，你的串口程序调试通了吗？我现在也在调试串口，发送用官方例程不行，你调试通了共享下吧。

RobertHand · 发表于 2017-10-10 09:50:37

mochou99 发表于 2017-10-1 23:00
兄弟，你的串口程序调试通了吗？我现在也在调试串口，发送用官方例程不行，你调试通了共享下吧。

调通了，我用LL库函数就可以。。。有点奇怪

RobertHand · 发表于 2017-10-10 09:56:33

mochou99 发表于 2017-10-1 23:00
兄弟，你的串口程序调试通了吗？我现在也在调试串口，发送用官方例程不行，你调试通了共享下吧。

LL_GPIO_InitTypeDef GPIO_InitStructure;
LL_USART_InitTypeDef USART_InitStructure;

/*GPIOCLK*/
LL_AHB1_GRP1_EnableClock(LL_AHB1_GRP1_PERIPH_GPIOA);
/*USART1CLK*/
LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_USART2);

/*USART RX GPIO CONFIG*/
GPIO_InitStructure.Pin = LL_GPIO_PIN_3;
GPIO_InitStructure.Mode = LL_GPIO_MODE_ALTERNATE;
GPIO_InitStructure.Speed = LL_GPIO_SPEED_FREQ_HIGH;
GPIO_InitStructure.Pull = LL_GPIO_PULL_NO;
GPIO_InitStructure.Alternate = LL_GPIO_AF_1;
LL_GPIO_Init(GPIOA, &GPIO_InitStructure);

/*USART TX GPIO CONFIG*/
GPIO_InitStructure.Pin = LL_GPIO_PIN_2;
GPIO_InitStructure.Mode = LL_GPIO_MODE_ALTERNATE;
GPIO_InitStructure.Speed = LL_GPIO_SPEED_FREQ_HIGH;
GPIO_InitStructure.OutputType = LL_GPIO_OUTPUT_PUSHPULL;
GPIO_InitStructure.Pull = LL_GPIO_PULL_NO;
GPIO_InitStructure.Alternate = LL_GPIO_AF_1;
LL_GPIO_Init(GPIOA, &GPIO_InitStructure);

/*USART CONFIG*/
USART_InitStructure.BaudRate = 115200;
USART_InitStructure.DataWidth = LL_USART_DATAWIDTH_8B;
USART_InitStructure.StopBits = LL_USART_STOPBITS_1;
USART_InitStructure.Parity = LL_USART_PARITY_NONE;
USART_InitStructure.TransferDirection = LL_USART_DIRECTION_TX_RX;
USART_InitStructure.HardwareFlowControl = LL_USART_HWCONTROL_NONE;
USART_InitStructure.OverSampling = LL_USART_OVERSAMPLING_16;

LL_USART_Init(USART2, &USART_InitStructure);