Serial port interruption problem

chenbingjy

Serial port interruption problem [Copy link]

INTERRUPT_HANDLER(UART1_RX_IRQHandler, 18) { /* In order to detect unexpected events during development, it is recommended to set a breakpoint on the following instruction. */ setUartReceivedFlag(); Receive_Buffer[Receive_Cnt++] = UART1_ReceiveData8(); //?áè?′??ú?óê?êy?Y if(Receive_Cnt >= 600) Receive_Cnt = 0; UART1_ClearITPendingBit(UART1_IT_RXNE); //?D???o3???ê?·? ò??ú // ReceiveTime = 2; //éè??3?ê±±?á?￡?ó???ò?êy?Y2?μ?3?1y20ms } I use STMS207C8T6 to write programs. The above is my serial port interrupt program. Please take a look. What's the problem? I always feel like there's something wrong here. Thanks!

ienglgge

I always feel that there is something wrong here. What is your basis? Look at the specific problem and see what it is. You can refer to the official routine.

chenbingjy

ienglgge posted on 2018-1-31 13:41 I always feel that there is a problem here. What is your basis? See what the specific problem is. You can refer to the official routine.

There seems to be a problem in that place. Later I found that there was a problem with the clock configuration.

chenbingjy

ienglgge posted on 2018-1-31 13:41 I always feel that there is a problem here. What is your basis? See what the specific problem is. You can refer to the official routine.

There seems to be a problem in that place. Later I found that there was a problem with the clock configuration.

huaiqiao

chenbingjy posted on 2018-1-31 13:46 There seems to be a problem in that place. Later I found that there was a problem with the clock configuration.

The clock is the premise of the whole program. If it is not set correctly, it will affect your baud rate. The simplest way is: after setting the system clock, use the LED to flash once every 1S.