Mbed uart read crash

Mbed OS
7

Check for another COM port provided by your DAP-link. Mbed OS debug console where are crash reports printed is on UART1 -current settings.

Can you share? For another one who will need to solve something similar.

  • variable c should be int instead of char
  • printf is slow function and this use case is not optimal , you can lose chars eazy
  • printf do not like unfinished strings - like here

You can try it without printf

void charReceive(void){
    debug.putc(Uart.getc());
}

or

#include "mbed.h"

RawSerial Uart(USBTX,USBRX);
char buffer[20];
int counter = 0;
volatile bool flag = false;

void charReceive(void){
    if(!flag){
        int c;
        do{
            c = Uart.getc();
            buffer[counter++] = c;
        }while(c != '\n');
        flag = true;
        buffer[counter] = '\0';
        counter = 0;
    }
}

int main(){
    printf("Test\n");
    Uart.baud(9600);
    Uart.attach(&charReceive);
    while(1){
        if(flag){
            printf("Output: %s\n", buffer);
            flag = false;
        }   
    } 
}

BR, Jan