'SmOuse' / Mbed 2 deprecated SerialPassthroughcjsESP8266

WIFI

Dependencies:   mbed

Fork of SerialPassthroughcjsESP8266 by chris stevens

main.cpp@7:d78ed22a787d, 2016-06-07 (annotated)

Committer:
cstevens
Date:
Tue Jun 07 19:37:59 2016 +0000
Revision:
7:d78ed22a787d
Parent:
6:dc4c165f6b53
Child:
8:34cc66421054
added comments and changed name to reflect newer specialist role of the code on the CWM for testing the ESP units.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
cstevens 7:d78ed22a787d 1 /* Simpler prog based on the serial passthrough code to enable a command line driven test of esp8266
cstevens 7:d78ed22a787d 2 * wifi modules.
cstevens 7:d78ed22a787d 3 * NB this uses the mbed sleep() command to form a low power system but on some MCUs this is a problem
cstevens 7:d78ed22a787d 4 * this works fine on an lpc1768 but not as yet on the KL25Z
cstevens 7:d78ed22a787d 5 */
mbedAustin 0:59bec1fd956e 6 #include "mbed.h"
mbedAustin 2:a8dcb07a1d00 7
cstevens 7:d78ed22a787d 8 RawSerial pc(USBTX, USBRX); // serial terminal for the pc connection
cstevens 7:d78ed22a787d 9 RawSerial dev(p28,p27); // serial uart for connecting to the esp8266 tx,rx NB mbed tx must connect ot esp rx and vice versa
cstevens 7:d78ed22a787d 10 DigitalOut led1(LED1); // twp leds
cstevens 7:d78ed22a787d 11 DigitalOut led4(LED4); // to allow visual check of bidirectional comms
cstevens 6:dc4c165f6b53 12 DigitalOut rst(p26);
mbedAustin 2:a8dcb07a1d00 13
cstevens 7:d78ed22a787d 14 // subroutine to run anytime a serial interrupt arrives from the device
cstevens 7:d78ed22a787d 15 // this basically passes everything thatthe device produces on to the pc terminal screen
sam_grove 5:96cb82af9996 16 void dev_recv()
mbedAustin 2:a8dcb07a1d00 17 {
sam_grove 5:96cb82af9996 18 led1 = !led1;
sam_grove 5:96cb82af9996 19 while(dev.readable()) {
sam_grove 5:96cb82af9996 20 pc.putc(dev.getc());
sam_grove 5:96cb82af9996 21 }
sam_grove 5:96cb82af9996 22 }
cstevens 7:d78ed22a787d 23 // subroutine to service the serial interrupt on the pc connection
cstevens 7:d78ed22a787d 24 // this is a bit more complex - it takes what the use sends on the pc and copies it on to the device
cstevens 7:d78ed22a787d 25 // the esp should echo these straight back to the the pc if all is well
cstevens 7:d78ed22a787d 26 // this also detects the end of command character which is ascii 13 (0x0d) adn adds a linefeed after it =asscii 10 (0x0a)
sam_grove 5:96cb82af9996 27 void pc_recv()
sam_grove 5:96cb82af9996 28 {
cstevens 6:dc4c165f6b53 29 char c;
sam_grove 5:96cb82af9996 30 led4 = !led4;
sam_grove 5:96cb82af9996 31 while(pc.readable()) {
cstevens 6:dc4c165f6b53 32 c=pc.getc();
cstevens 6:dc4c165f6b53 33 dev.putc(c);
cstevens 6:dc4c165f6b53 34 //pc.putc(c); // echo back
cstevens 7:d78ed22a787d 35 if(c==13) {dev.putc(10); // send the linefeed to complement the carriage return generated by return key on the pc
cstevens 6:dc4c165f6b53 36 pc.putc(10);
cstevens 6:dc4c165f6b53 37 }
mbedAustin 0:59bec1fd956e 38 }
mbedAustin 0:59bec1fd956e 39 }
mbedAustin 4:ba9100d52e48 40
mbedAustin 4:ba9100d52e48 41 int main()
mbedAustin 4:ba9100d52e48 42 {
cstevens 6:dc4c165f6b53 43 rst=0;
cstevens 6:dc4c165f6b53 44 wait(1);
cstevens 6:dc4c165f6b53 45 rst=1;
cstevens 6:dc4c165f6b53 46 wait(1);
cstevens 6:dc4c165f6b53 47 pc.printf("go\n\r");
cstevens 6:dc4c165f6b53 48 pc.baud(115200);
cstevens 6:dc4c165f6b53 49 dev.baud(115200);
mbedAustin 4:ba9100d52e48 50
sam_grove 5:96cb82af9996 51 pc.attach(&pc_recv, Serial::RxIrq);
sam_grove 5:96cb82af9996 52 dev.attach(&dev_recv, Serial::RxIrq);
cstevens 6:dc4c165f6b53 53
cstevens 6:dc4c165f6b53 54
sam_grove 5:96cb82af9996 55
mbedAustin 4:ba9100d52e48 56 while(1) {
sam_grove 5:96cb82af9996 57 sleep();
mbedAustin 4:ba9100d52e48 58 }
mbedAustin 4:ba9100d52e48 59 }