USART6配置后，却进不去中断

HelloWinter · 发表于 2017-2-18 14:02:18

昨天试着用了一下USART6,这好像跟其他串口一样吧，但是我配置完之后却进不去。按照论坛里搜到的那一份USART6配置[mw_shl_code=c,true]void USART6_Configuration(void)
{

USART_InitTypeDef usart6;
   GPIO_InitTypeDef  gpio;
NVIC_InitTypeDef  nvic;

RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOC,ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART6,ENABLE);

GPIO_PinAFConfig(GPIOC,GPIO_PinSource6,GPIO_AF_USART6);
GPIO_PinAFConfig(GPIOC,GPIO_PinSource7,GPIO_AF_USART6);

gpio.GPIO_Pin = GPIO_Pin_6| GPIO_Pin_7;
gpio.GPIO_Mode = GPIO_Mode_AF;
gpio.GPIO_Speed = GPIO_Speed_100MHz;
gpio.GPIO_PuPd = GPIO_PuPd_NOPULL;
gpio.GPIO_OType = GPIO_OType_PP;

GPIO_Init(GPIOC, &gpio);

usart6.USART_BaudRate = 115200;
usart6.USART_WordLength = USART_WordLength_8b;
usart6.USART_StopBits = USART_StopBits_1;
usart6.USART_Parity = USART_Parity_No;
usart6.USART_Mode = USART_Mode_Rx|USART_Mode_Tx;
usart6.USART_HardwareFlowControl = USART_HardwareFlowControl_None;

USART_Init(USART6,&usart6);
USART_Cmd(USART6,ENABLE);
USART_ITConfig(USART6,USART_IT_RXNE,ENABLE);

nvic.NVIC_IRQChannel = USART6_IRQn;
nvic.NVIC_IRQChannelPreemptionPriority = 0;
nvic.NVIC_IRQChannelSubPriority = 2;
nvic.NVIC_IRQChannelCmd = ENABLE;

NVIC_Init(&nvic);
}

uint8_t Raw_Data[72];

void USART6_IRQHandler(void)
{
  if(USART_GetITStatus(USART6, USART_IT_RXNE) != RESET)
{
      Raw_Data[counter] = USART_ReceiveData(USART6);
      }
}[/mw_shl_code]o也没用。检查了好久，觉得没问题呀，可以帮忙看下嘛？

zmingwang · 发表于 2017-2-18 14:02:19

你这个配置基本没有问题,要检查几点:
1.确认你的硬件连接上,是接的USART6.
2.确认USART6用的是PC6,PC7,而不是PG14,PG9
3.确认晶振是25MHz
4.短接主机串口的RX和TX,确认主机串口正常
5.确认主机串口的波特率是115200
6,确认主机串口到你的板子的物理连接是通的,万用表测试