Diff: main.cpp

Revision:

0:6c254e376969

Child:

1:df9d6f3886f6

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon Jun 29 13:22:34 2015 +0000
@@ -0,0 +1,78 @@
+//**************************************************//
+// Application to switch a light or other output    //
+// whenever the correct handclapping pattern is     //
+// detected.                                        //
+//                                                  //
+// Ferry Musters & Thom Grasso - 26/06/2015         //
+// Electrical Engineering - Hogeschool Utrecht      //
+//**************************************************//
+// TODO:
+// Must have:   - Reset timer and measurements after (4sec?) timeout
+// Must have:   - Detect set pattern
+// Could have:  - Make user defined patterns (learn the device the pattern)
+
+#include "mbed.h"
+
+//-------------------[ Variables ]-------------------
+DigitalOut led_red(LED_RED);
+DigitalOut led_blue(LED_BLUE);
+DigitalOut led_green(LED_GREEN);
+
+DigitalOut boardGnd(D4);
+DigitalOut boardVcc(D5);
+//InterruptIn boardClap(SW2);
+InterruptIn boardClap(D6);
+DigitalOut boardReset(D7);
+
+Serial output(USBTX, USBRX);
+Timer timer; //overall timer
+int clapTime[100]; //buffer to save clap times
+int currentClap = 0; //counter to keep track of current clap in buffer
+int printedClap = 0; //counter to keep track of printf'ed claps
+
+
+//-------------------[ Functions ]-------------------
+void clap_detected(void)
+{
+    clapTime[currentClap++] = timer.read_ms(); //save clap time and increment counter
+
+    led_red = 0;    //blink a led to show detected clap
+    boardReset = 1; //reset the clap detecter board with a reset pulse
+    wait(0.1); //wait to show led and also avoid handclap 'bounces'
+    boardReset = 0;
+    led_red = 1; //The LED pin is inverted so '1' means LED off
+}
+
+
+
+//-------------------[ Main ]-------------------
+int main()
+{
+    timer.start();
+    boardVcc = 1; boardGnd = 0; boardReset = 0;
+    led_red = 1; led_green = 1; led_blue = 1;
+    boardClap.rise(&clap_detected);
+
+    while (true) {
+        if(printedClap < currentClap) { //if the last clap isn't printed yet
+            output.printf("Clap %d: %d\r\n", ++printedClap, clapTime[printedClap]); //debug the clap
+        }
+        if((currentClap > 1) && (timer.read_ms() > (clapTime[currentClap-1] + 5000))) { //reset when timeout (last clap is more then 5 seconds ago)
+            output.printf("Timeout. %d claps were detected over a time of %dms\r\n", (currentClap - 1), (clapTime[currentClap] - clapTime[0]));
+            currentClap = 0;
+            printedClap = 0;
+
+            led_blue = 0;    //blink a led
+            wait(0.3);
+            led_blue = 1; //The LED pin is inverted so '1' means LED off
+
+        }
+
+        /*led_blue = 1;
+        led_green = 0;
+        wait(0.2);
+        led_blue = 0;
+        led_green = 1;
+        wait(0.2);*/
+    }
+}