Important changes to forums and questions

All forums and questions are now archived. To start a new conversation or read the latest updates go to forums.mbed.com.

Problem with applying format to serial communication

Topic last updated 12 Nov 2016, by Wojciech Glapiak. 0 replies
Wojciech Glapiak
12 Nov 2016

Hello, I've developped simple program that send chars to serial port and can receive chars as well. It works fine until I change word length or parity or stop bits. And I need to set Odd parity because of project requirements. I've tried RealTerm, TerraTerm and CoolTerm. Every of them receiving random chars after changing that settings. I can successfully change baud rate. I'm working on STM32F746G-DISCO

could someone help? thanks in advance.

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
#include "mbed.h"
 
DigitalOut myled(LED1);
Serial pc(USBTX, USBRX); // tx, rx
Serial device(D1, D0);  // tx, rx
 
int i;
char c[10],buffer[10];
 
void validator() {
 
    myled = 1; // LED is ON
    wait(0.2); // 200 ms
    myled = 0; // LED is OFF
}
 
int main() {
    pc.baud(2400);
    pc.format(8,Serial::None,1);
    device.format(8,Serial::None,1);
    device.baud(2400);
    pc.printf("siema!\n");  
    while(1) {
        if(pc.readable()) {
            pc.gets(buffer,3);
            if (strcmp(buffer,"BK")==0) {
                pc.printf("bk\n");
            }
            else {
                pc.printf("error\n");
            }
            validator();
        }
        if(device.readable()) {
            device.gets(buffer,3);
            if (strcmp(buffer,"BK")==0) {
                device.printf("bk\n");
            }
            else {
                device.printf("error\n");
            }
            validator();
        }
    }
}