Mac Lobdell / Mbed OS serial_passthrough_mbed_os_5

transmit what you receive in both directions

Pass serial data to/from a one uart to another. Useful for accessing the serial interface from a connected module such as WiFi or Cellular.

main.cpp@12:c922ba772e30, 2019-09-13 (annotated)

Committer:
maclobdell
Date:
Fri Sep 13 15:37:35 2019 +0000
Revision:
12:c922ba772e30
Parent:
8:bb09890333fe 
update to RawSerial to allow send/receive form interrupt context; update Mbed OS version to latest

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Jonathan Austin 0:2757d7abb7d9 1 #include "mbed.h"
Jonathan Austin 0:2757d7abb7d9 2
maclobdell 12:c922ba772e30 3 void recieve_this(void);
maclobdell 12:c922ba772e30 4 void recieve_that(void);
maclobdell 12:c922ba772e30 5
Jonathan Austin 0:2757d7abb7d9 6 DigitalOut led1(LED1);
maclobdell 12:c922ba772e30 7 DigitalOut led2(LED2);
Jonathan Austin 0:2757d7abb7d9 8
maclobdell 12:c922ba772e30 9 RawSerial this_way(USBTX,USBRX);
maclobdell 12:c922ba772e30 10 RawSerial that_way(D1,D0);
maclobdell 12:c922ba772e30 11
Jonathan Austin 1:846c97078558 12 // main() runs in its own thread in the OS
Jonathan Austin 1:846c97078558 13 // (note the calls to Thread::wait below for delays)
Jonathan Austin 0:2757d7abb7d9 14 int main() {
maclobdell 12:c922ba772e30 15
maclobdell 12:c922ba772e30 16
maclobdell 12:c922ba772e30 17 this_way.baud(115200);
maclobdell 12:c922ba772e30 18 /** attach the callback function to be called whenever a character is received */
maclobdell 12:c922ba772e30 19 this_way.attach(&recieve_this, Serial::RxIrq);
maclobdell 12:c922ba772e30 20 ///set the baud rate
maclobdell 12:c922ba772e30 21 that_way.baud(115200);
maclobdell 12:c922ba772e30 22 /** attach the callback function to be called whenever a character is received */
maclobdell 12:c922ba772e30 23 that_way.attach(&recieve_that, Serial::RxIrq);
maclobdell 12:c922ba772e30 24
maclobdell 12:c922ba772e30 25
Jonathan Austin 0:2757d7abb7d9 26 while (true) {
maclobdell 12:c922ba772e30 27 Thread::wait(1000);
Jonathan Austin 0:2757d7abb7d9 28 }
Jonathan Austin 0:2757d7abb7d9 29 }
Jonathan Austin 1:846c97078558 30
maclobdell 12:c922ba772e30 31
maclobdell 12:c922ba772e30 32 void recieve_this(void)
maclobdell 12:c922ba772e30 33 {
maclobdell 12:c922ba772e30 34 ///blink an led for fun
maclobdell 12:c922ba772e30 35 led1 = !led1;
maclobdell 12:c922ba772e30 36 /** get a character, then put it back on the other interface */
maclobdell 12:c922ba772e30 37 that_way.putc(this_way.getc());
maclobdell 12:c922ba772e30 38
maclobdell 12:c922ba772e30 39 }
maclobdell 12:c922ba772e30 40 /** get incoming data from second serial interface and put to other
maclobdell 12:c922ba772e30 41 * @param none
maclobdell 12:c922ba772e30 42 * @returns none
maclobdell 12:c922ba772e30 43 */
maclobdell 12:c922ba772e30 44 void recieve_that(void)
maclobdell 12:c922ba772e30 45 {
maclobdell 12:c922ba772e30 46 ///blink an led for fun
maclobdell 12:c922ba772e30 47 led2 = !led2;
maclobdell 12:c922ba772e30 48 /** get a character, then put it back on the other interface */
maclobdell 12:c922ba772e30 49 this_way.putc(that_way.getc());
maclobdell 12:c922ba772e30 50 }