Gitakichi Tokyo / Mbed 2 deprecated IR-remote

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Dependencies:   mbed

main.cpp@4:ab83633679f4, 2020-02-11 (annotated)

Committer:
gitakichi
Date:
Tue Feb 11 10:19:43 2020 +0000
Revision:
4:ab83633679f4
Parent:
3:31c005437fa5
Child:
5:5bf6cd9dffb7
if receive pwr signal, bling led 10 sec.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
gitakichi 0:a3131d121a8f 1 //reference from
gitakichi 0:a3131d121a8f 2 //https://www.hiramine.com/physicalcomputing/mbed/irreceiver.html
gitakichi 4:ab83633679f4 3 //http://elm-chan.org/docs/ir_format.html
gitakichi 0:a3131d121a8f 4 #include "mbed.h"
gitakichi 0:a3131d121a8f 5
gitakichi 4:ab83633679f4 6 //compatible
gitakichi 4:ab83633679f4 7 //http://akizukidenshi.com/catalog/g/gM-07245/
gitakichi 3:31c005437fa5 8
gitakichi 4:ab83633679f4 9 //maybe 0000100011110111 is customer code
gitakichi 3:31c005437fa5 10 #define OPT_PWR "000010001111011100011011111001001"
gitakichi 3:31c005437fa5 11 #define OPT_A "000010001111011100011111111000001"
gitakichi 3:31c005437fa5 12 #define OPT_B "000010001111011100011110111000011"
gitakichi 3:31c005437fa5 13 #define OPT_C "000010001111011100011010111001011"
gitakichi 3:31c005437fa5 14 #define OPT_CENTRE "000010001111011100000100111110111"
gitakichi 3:31c005437fa5 15 #define OPT_TOP "000010001111011100000101111110101"
gitakichi 3:31c005437fa5 16 #define OPT_UNDER "000010001111011100000000111111111"
gitakichi 3:31c005437fa5 17 #define OPT_LEFT "000010001111011100001000111101111"
gitakichi 3:31c005437fa5 18 #define OPT_RIGHT "000010001111011100000001111111101"
gitakichi 3:31c005437fa5 19
gitakichi 0:a3131d121a8f 20 DigitalIn g_dpinIrReceiver(D2);
gitakichi 0:a3131d121a8f 21 Serial g_serial(USBTX, USBRX);
gitakichi 4:ab83633679f4 22 DigitalOut myled(LED1);
gitakichi 0:a3131d121a8f 23
gitakichi 0:a3131d121a8f 24 int main()
gitakichi 0:a3131d121a8f 25 {
gitakichi 4:ab83633679f4 26 int iState_prev = 1;
gitakichi 4:ab83633679f4 27 int t_negedge,t_posedge,t_delta,tx_delay;
gitakichi 4:ab83633679f4 28 int data_en = 0;
gitakichi 4:ab83633679f4 29 char rx_data[64] = "";
gitakichi 4:ab83633679f4 30 int busy = 0;
gitakichi 4:ab83633679f4 31
gitakichi 0:a3131d121a8f 32 g_serial.baud(115200);
gitakichi 0:a3131d121a8f 33 Timer timer;
gitakichi 0:a3131d121a8f 34 timer.start();
gitakichi 3:31c005437fa5 35
gitakichi 1:4847c54eed20 36 while(1) {
gitakichi 4:ab83633679f4 37 if(busy == 1) {
gitakichi 4:ab83633679f4 38 for(int i=0;i<tx_delay;i++){
gitakichi 4:ab83633679f4 39 wait_ms(1000);
gitakichi 4:ab83633679f4 40 }
gitakichi 4:ab83633679f4 41 //tx IR
gitakichi 4:ab83633679f4 42 myled = 0;
gitakichi 4:ab83633679f4 43 busy = 0;
gitakichi 4:ab83633679f4 44 } else {
gitakichi 4:ab83633679f4 45 int iState = g_dpinIrReceiver;
gitakichi 4:ab83633679f4 46 //detect H signal
gitakichi 4:ab83633679f4 47 if( iState != iState_prev ) {
gitakichi 4:ab83633679f4 48 if(iState == 0) {
gitakichi 4:ab83633679f4 49 //timer.start();//reset
gitakichi 4:ab83633679f4 50 t_negedge = timer.read_us();//start(detect negedge
gitakichi 2:eca0702650ca 51
gitakichi 4:ab83633679f4 52 if(data_en == 1) {
gitakichi 4:ab83633679f4 53 t_delta = t_negedge - t_posedge;
gitakichi 4:ab83633679f4 54 data_en = 0;
gitakichi 4:ab83633679f4 55 if(t_delta > 1523) strcat(rx_data, "1");//625*2.5
gitakichi 4:ab83633679f4 56 else strcat(rx_data, "0");
gitakichi 3:31c005437fa5 57
gitakichi 4:ab83633679f4 58 if(strlen(rx_data) == 33) {
gitakichi 4:ab83633679f4 59 busy = 1;
gitakichi 4:ab83633679f4 60 g_serial.printf("received=");
gitakichi 4:ab83633679f4 61 if (strcmp(rx_data,OPT_PWR) == 0) {
gitakichi 4:ab83633679f4 62 g_serial.printf("PWR");
gitakichi 4:ab83633679f4 63 myled = 1;
gitakichi 4:ab83633679f4 64 tx_delay = 10;
gitakichi 4:ab83633679f4 65 //tx_data = CHANGHONG_23;
gitakichi 4:ab83633679f4 66 } else if (strcmp(rx_data,OPT_A) == 0) g_serial.printf("A");
gitakichi 4:ab83633679f4 67 else if (strcmp(rx_data,OPT_B) == 0) g_serial.printf("B");
gitakichi 4:ab83633679f4 68 else if (strcmp(rx_data,OPT_C) == 0) g_serial.printf("C");
gitakichi 4:ab83633679f4 69 else if (strcmp(rx_data,OPT_CENTRE) == 0) g_serial.printf("CENTRE");
gitakichi 4:ab83633679f4 70 else if (strcmp(rx_data,OPT_TOP) == 0) g_serial.printf("TOP");
gitakichi 4:ab83633679f4 71 else if (strcmp(rx_data,OPT_UNDER) == 0) g_serial.printf("UNDER");
gitakichi 4:ab83633679f4 72 else if (strcmp(rx_data,OPT_LEFT) == 0) g_serial.printf("LEFT");
gitakichi 4:ab83633679f4 73 else if (strcmp(rx_data,OPT_RIGHT) == 0) g_serial.printf("RIGHT");
gitakichi 4:ab83633679f4 74 g_serial.printf("\r\n");
gitakichi 4:ab83633679f4 75 }
gitakichi 3:31c005437fa5 76 }
gitakichi 4:ab83633679f4 77 } else if(iState == 1) { //end (detect posedge
gitakichi 4:ab83633679f4 78 t_posedge = timer.read_us();
gitakichi 4:ab83633679f4 79 //compare and output
gitakichi 4:ab83633679f4 80 t_delta = t_posedge - t_negedge;
gitakichi 2:eca0702650ca 81
gitakichi 4:ab83633679f4 82 if(t_delta > 8430) {//625*15, flame
gitakichi 4:ab83633679f4 83 rx_data[0] = '\0';
gitakichi 4:ab83633679f4 84 } else data_en = 1;
gitakichi 2:eca0702650ca 85 }
gitakichi 1:4847c54eed20 86 }
gitakichi 4:ab83633679f4 87 iState_prev = iState;
gitakichi 2:eca0702650ca 88 }
gitakichi 0:a3131d121a8f 89 }
gitakichi 0:a3131d121a8f 90 }