Seoul IoT Hackathon / Mbed OS mbed-os-example-blinky-and-serial

LED1 Blinky UART3 Rx/Tx

main.cpp@0:f27fda4d5420, 2017-11-06 (annotated)

Committer:
xtra72
Date:
Mon Nov 06 02:44:45 2017 +0000
Revision:
0:f27fda4d5420
Add serial in/out

Who changed what in which revision?

UserRevisionLine numberNew contents of line
xtra72 0:f27fda4d5420 1 #include "mbed.h"
xtra72 0:f27fda4d5420 2
xtra72 0:f27fda4d5420 3 Serial serial(D1,D0);
xtra72 0:f27fda4d5420 4 DigitalOut led1(LED1);
xtra72 0:f27fda4d5420 5 Timer timer;
xtra72 0:f27fda4d5420 6
xtra72 0:f27fda4d5420 7 // main() runs in its own thread in the OS
xtra72 0:f27fda4d5420 8 int main() {
xtra72 0:f27fda4d5420 9 char buffer[256];
xtra72 0:f27fda4d5420 10
xtra72 0:f27fda4d5420 11 serial.baud(9600);
xtra72 0:f27fda4d5420 12 timer.start();
xtra72 0:f27fda4d5420 13
xtra72 0:f27fda4d5420 14 printf("Blinky example!\n");
xtra72 0:f27fda4d5420 15 while (true)
xtra72 0:f27fda4d5420 16 {
xtra72 0:f27fda4d5420 17 int read_line = 0;
xtra72 0:f27fda4d5420 18 timer.reset();
xtra72 0:f27fda4d5420 19
xtra72 0:f27fda4d5420 20 while (timer.read_ms() < 500)
xtra72 0:f27fda4d5420 21 {
xtra72 0:f27fda4d5420 22 if (serial.readable() && read_line < sizeof(buffer) - 1)
xtra72 0:f27fda4d5420 23 {
xtra72 0:f27fda4d5420 24 buffer[read_line++] = serial.getc();
xtra72 0:f27fda4d5420 25 }
xtra72 0:f27fda4d5420 26
xtra72 0:f27fda4d5420 27 wait_ms(1);
xtra72 0:f27fda4d5420 28 }
xtra72 0:f27fda4d5420 29 buffer[read_line] = 0;
xtra72 0:f27fda4d5420 30
xtra72 0:f27fda4d5420 31 led1 = !led1;
xtra72 0:f27fda4d5420 32 serial.printf("Led state is %s\r\n", ((led1.read())?"on":"off"));
xtra72 0:f27fda4d5420 33
xtra72 0:f27fda4d5420 34
xtra72 0:f27fda4d5420 35 if (read_line != 0)
xtra72 0:f27fda4d5420 36 {
xtra72 0:f27fda4d5420 37 serial.printf("Read Line : %s\r\n", buffer);
xtra72 0:f27fda4d5420 38 }
xtra72 0:f27fda4d5420 39 else
xtra72 0:f27fda4d5420 40 {
xtra72 0:f27fda4d5420 41 serial.printf("Read line empty!\r\n");
xtra72 0:f27fda4d5420 42 }
xtra72 0:f27fda4d5420 43 }
xtra72 0:f27fda4d5420 44 }
xtra72 0:f27fda4d5420 45