Diff: main.cpp

Revision:

1:57d9ea192a5e

Parent:

0:4146c9dd6aa5

--- a/main.cpp	Sat Jan 09 14:19:29 2016 +0000
+++ b/main.cpp	Sat Jan 09 14:26:06 2016 +0000
@@ -4,9 +4,11 @@
 #define LED_ON  0
 #define LED_OFF 1
 
-DigitalOut led(P0_14, 1);
-DigitalOut flash(P0_12, 1);
+// LED as test output
+DigitalOut led(P0_14, LED_OFF);
+DigitalOut flash(P0_12, LED_OFF);
 
+// cyclic interrupt for IRMP ISR worker
 Ticker t;
 
 // only for performance test
@@ -16,11 +18,12 @@
 int     timeISRAvgSum = 0;
 int     countISRCalls = 0;
 
+// this ISR must be called cyclic
 void irmpISR(void)
 {
-    int t1 = timerPerfTest.read_us();
+    int t1 = timerPerfTest.read_us();               // read performance timer
 
-    irmp_ISR();             // call irmp ISR
+    irmp_ISR();                                     // call irmp ISR
 
     int timeISR = timerPerfTest.read_us() - t1;     // calc time spent in worker ISR
     if (timeISR > timeISRMax)                       // store maximum
@@ -35,6 +38,7 @@
     led = LED_OFF;
     timerPerfTest.start();
 
+    // irmp_data holds result of received IR code
     IRMP_DATA irmp_data;
 
     irmp_init();                                                            // initialize irmp
@@ -43,8 +47,9 @@
     // infinite loop, interrupts will blink PORTD pins and handle UART communications.
     while (1)
     {
-        flash = !flash;
+        flash = !flash;     // test output. flashes at 15/2 kHz, you will not see it blinking
 
+        // check for received IR commands
         if (irmp_get_data (&irmp_data))
         {
             // ir signal decoded, do something here...