William Marsh / Mbed OS serial-demo

Test program for serial interface

This program turns the red LED on and then waits for a character to be entered at the terminal. The LED then goes off for 500ms before the cycle repeats.

The purpose of the program is to demonstrate the use of the serial link

main.cpp@3:5b27b27e68ab, 2019-01-09 (annotated)

Committer:
WilliamMarshQMUL
Date:
Wed Jan 09 22:22:22 2019 +0000
Revision:
3:5b27b27e68ab
Parent:
2:e92d97ac59e4
Child:
4:a2d1329d042c
API change

Who changed what in which revision?

UserRevisionLine numberNew contents of line
WilliamMarshQMUL 2:e92d97ac59e4 1 // Serial demo using mbed 5
WilliamMarshQMUL 2:e92d97ac59e4 2
WilliamMarshQMUL 0:75835b5692b9 3 #include "mbed.h"
WilliamMarshQMUL 0:75835b5692b9 4
WilliamMarshQMUL 0:75835b5692b9 5 DigitalOut myled(LED1);
WilliamMarshQMUL 0:75835b5692b9 6 Serial pc(USBTX, USBRX); // tx, rx
WilliamMarshQMUL 0:75835b5692b9 7
WilliamMarshQMUL 0:75835b5692b9 8 int main() {
WilliamMarshQMUL 0:75835b5692b9 9 char c ;
WilliamMarshQMUL 0:75835b5692b9 10 pc.printf("Enter a character>");
WilliamMarshQMUL 0:75835b5692b9 11 while(1) {
WilliamMarshQMUL 0:75835b5692b9 12 myled = 0; // turn on
WilliamMarshQMUL 0:75835b5692b9 13 c = pc.getc();
WilliamMarshQMUL 0:75835b5692b9 14 myled = 1; // turn off
WilliamMarshQMUL 0:75835b5692b9 15 pc.putc(c);
WilliamMarshQMUL 1:961580c296da 16 pc.putc('\r');
WilliamMarshQMUL 0:75835b5692b9 17 pc.putc('\n');
WilliamMarshQMUL 3:5b27b27e68ab 18 wait(0.5);
WilliamMarshQMUL 0:75835b5692b9 19 pc.printf("Enter a character>");
WilliamMarshQMUL 0:75835b5692b9 20 }
WilliamMarshQMUL 0:75835b5692b9 21 }