INTERRUPT_HANDLER(USART1_RX_TIM5_CC_IRQHandler,28)
{
/* In order to detect unexpected events during development,
it is recommended to set a breakpoint on the following instruction.
*/
//uint8_t temp = USART1->SR;
if(USART_GetFlagStatus(USART1, USART_FLAG_RXNE) == SET)
{
uint8_t temp = USART_ReceiveData8(USART1);
if(pos < 20)
{
//pos = 0;
RX_buf[pos] = temp;
pos++;
}
}
//USART_ClearITPendingBit(USART1, USART_IT_RXNE);
}void usart_setup(void)
{
GPIO_ExternalPullUpConfig(GPIOC, GPIO_Pin_3, ENABLE);
GPIO_ExternalPullUpConfig(GPIOC, GPIO_Pin_2, ENABLE);
CLK_PeripheralClockConfig(CLK_Peripheral_USART1, ENABLE);
USART_DeInit(USART1);
USART_Init(USART1, (uint32_t)9600, USART_WordLength_8b, USART_StopBits_1,
USART_Parity_No, (USART_Mode_TypeDef)(USART_Mode_Tx | USART_Mode_Rx));
USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);
USART_Cmd(USART1, ENABLE);
}i dont know why one time only receive two bytes
