Diff: main.cpp

Revision:

4:ab83633679f4

Parent:

3:31c005437fa5

Child:

5:5bf6cd9dffb7

--- a/main.cpp	Tue Feb 11 08:26:57 2020 +0000
+++ b/main.cpp	Tue Feb 11 10:19:43 2020 +0000
@@ -1,9 +1,12 @@
 //reference from
 //https://www.hiramine.com/physicalcomputing/mbed/irreceiver.html
-
+//http://elm-chan.org/docs/ir_format.html
 #include "mbed.h"
 
+//compatible
+//http://akizukidenshi.com/catalog/g/gM-07245/
 
+//maybe 0000100011110111 is customer code
 #define OPT_PWR     "000010001111011100011011111001001"
 #define OPT_A       "000010001111011100011111111000001"
 #define OPT_B       "000010001111011100011110111000011"
@@ -14,66 +17,74 @@
 #define OPT_LEFT    "000010001111011100001000111101111"
 #define OPT_RIGHT   "000010001111011100000001111111101"
 
-
 DigitalIn g_dpinIrReceiver(D2);
 Serial g_serial(USBTX, USBRX);
+DigitalOut myled(LED1);
 
 int main()
 {
+    int iState_prev = 1;
+    int t_negedge,t_posedge,t_delta,tx_delay;
+    int data_en = 0;
+    char rx_data[64] = "";
+    int busy = 0;
+
     g_serial.baud(115200);
-
     Timer timer;
     timer.start();
 
-    int iState_prev = 1;
-    int t_negedge,t_posedge,t_delta;
-    int data_en = 0;
-    char rx_data[64] = "";
-
     while(1) {
-        int iState = g_dpinIrReceiver;
+        if(busy == 1) {
+            for(int i=0;i<tx_delay;i++){
+                wait_ms(1000);
+            }
+            //tx IR
+            myled = 0;
+            busy = 0;
+        } else {
+            int iState = g_dpinIrReceiver;
+            //detect H signal
+            if( iState != iState_prev ) {
+                if(iState == 0) {
+                    //timer.start();//reset
+                    t_negedge = timer.read_us();//start(detect negedge
 
-        //detect H signal
-        if( iState != iState_prev ) {
-            if(iState == 0) {
-                //timer.start();//reset
-                t_negedge = timer.read_us();//start(detect negedge
-
-                if(data_en == 1) {
-                    t_delta = t_negedge - t_posedge;
-                    data_en = 0;
-                    if(t_delta > 1523)    strcat(rx_data, "1");//g_serial.printf("1");//625*2.5
-                    else                  strcat(rx_data, "0");//g_serial.printf("0");
+                    if(data_en == 1) {
+                        t_delta = t_negedge - t_posedge;
+                        data_en = 0;
+                        if(t_delta > 1523)    strcat(rx_data, "1");//625*2.5
+                        else                  strcat(rx_data, "0");
 
-                    if(strlen(rx_data) == 33){
-                        //g_serial.printf("data=%s\r\n",rx_data);
-                        if      (strcmp(rx_data,OPT_PWR) == 0)      g_serial.printf("received=PWR\r\n",rx_data);
-                        else if (strcmp(rx_data,OPT_CENTRE) == 0)   g_serial.printf("received=CENTRE\r\n",rx_data);
+                        if(strlen(rx_data) == 33) {
+                            busy = 1;
+                            g_serial.printf("received=");
+                            if      (strcmp(rx_data,OPT_PWR) == 0) {
+                                g_serial.printf("PWR");
+                                myled = 1;
+                                tx_delay = 10;
+                                //tx_data = CHANGHONG_23;
+                            } else if (strcmp(rx_data,OPT_A) == 0)        g_serial.printf("A");
+                            else if (strcmp(rx_data,OPT_B) == 0)        g_serial.printf("B");
+                            else if (strcmp(rx_data,OPT_C) == 0)        g_serial.printf("C");
+                            else if (strcmp(rx_data,OPT_CENTRE) == 0)   g_serial.printf("CENTRE");
+                            else if (strcmp(rx_data,OPT_TOP) == 0)      g_serial.printf("TOP");
+                            else if (strcmp(rx_data,OPT_UNDER) == 0)    g_serial.printf("UNDER");
+                            else if (strcmp(rx_data,OPT_LEFT) == 0)     g_serial.printf("LEFT");
+                            else if (strcmp(rx_data,OPT_RIGHT) == 0)    g_serial.printf("RIGHT");
+                            g_serial.printf("\r\n");
+                        }
                     }
-
-                }
-            } else if(iState == 1) { //end (detect posedge
-
+                } else if(iState == 1) { //end (detect posedge
+                    t_posedge = timer.read_us();
+                    //compare and output
+                    t_delta = t_posedge - t_negedge;
 
-                t_posedge = timer.read_us();//over flow?
-                //compare and output
-                t_delta = t_posedge - t_negedge;
-
-                if(t_delta > 8430) {
-                    //g_serial.printf("flame,");//625*15
-                    rx_data[0] = '\0';
-                } else {
-                    data_en = 1;
-                    //g_serial.printf("data,");
-                    //g_serial.printf( "%d, ", t_negedge - t_posedge);
+                    if(t_delta > 8430) {//625*15, flame
+                        rx_data[0] = '\0';
+                    } else  data_en = 1;
                 }
             }
+            iState_prev = iState;
         }
-        iState_prev = iState;
-
-        //iState_prev = iState;
-        //int iMicroSec = timer.read_us();
-        //g_serial.printf( "%d, ", iMicroSec - iMicroSec_prev );
-        //iMicroSec_prev = iMicroSec;
     }
 }
\ No newline at end of file