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11 years, 3 months ago.  This question has been closed. Reason: Off Topic

Second serial port :Not call Interrupt Handler

I try two serial Port on Nucleo F401 Board. I want to test Receive Midi Serial data by intHandler that write it to RingBuffer ,Transmit it by PC serial. But not work it. It seems not call my_inthandler. led is always on.....Why not?

pc.printf Hello is only working.

Sorry ++) Now It work well. Midi Photo Cuppler Device is damaged. This Program is fine.

#include "mbed.h"
#include "RawSerial.h"

DigitalOut myled(LED1);
RawSerial pc(USBTX, USBRX); // tx, rx USART2
RawSerial midi(PA_9, PA_10);  // tx, rx USART1
//RawSerial midi(PB_6, PB_7);  // tx, rx USART1

uint8_t rxbuffer[256];
uint8_t *rdptr;
uint8_t *wrptr;

void my_inthandler(void){
    myled = 0;
    while (USART1->SR & (1<<5)){ // RXNE 1: Received data is ready to be read.
        *wrptr++ = (uint8_t)(USART1->DR & 0xFF);
        if (wrptr >&rxbuffer[255]) wrptr = &rxbuffer[0];//
    }
}


int main() {
    rdptr = wrptr = &rxbuffer[0];
    pc.printf("Hello \n\r");
     
    midi.attach(my_inthandler, Serial::RxIrq);
    midi.format(8,RawSerial::None,1);
    midi.baud(31250);

    myled = 1; // LED is ON
    while(1) {
        if(rdptr != wrptr){
            pc.printf("%2x\n\r",*rdptr);
           if (++rdptr >&rxbuffer[255]) rdptr = &rxbuffer[0];//
        }else{
            wait_ms(100);   
        }
    }
}

use " <<code>> <</code>> " for code snippets ;)

I'll paste here the code from miditest:

#include "mbed.h"
#include "RawSerial.h"

DigitalOut myled(LED1);
RawSerial pc(USBTX, USBRX); // tx, rx USART2
RawSerial midi(PA_9, PA_10);  // tx, rx USART1
//RawSerial midi(PB_6, PB_7);  // tx, rx USART1

uint8_t rxbuffer[256];
uint8_t *rdptr;
uint8_t *wrptr;

void my_inthandler(){
    myled = 0;// LED OFF
    while (USART1->SR & (1<<5)){ // RXNE 1: Received data is ready to be read.
        *wrptr++ = (uint8_t)(USART1->DR & 0xFF);
        if (wrptr >&rxbuffer[255]) wrptr = &rxbuffer[0];//
    }
}


int main() {
    pc.printf("Hello \n");
   midi.format(8,RawSerial::None,1);
    midi.baud(31250);
    
    rdptr = wrptr = &rxbuffer[0];
    midi.attach(&my_inthandler, Serial::RxIrq);

    myled = 1; // LED is ON
    while(1) {
        if(rdptr != wrptr){
            pc.printf("%2x\n",*rdptr);
           if (++rdptr >&rxbuffer[255]) rdptr = &rxbuffer[0];//
        }else{
            wait_ms(100);   
        }
    }
}
posted by Martin Kojtal 15 May 2014