Diff: main.cpp

Revision:

0:84ef638f3691

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon Nov 29 21:27:28 2010 +0000
@@ -0,0 +1,119 @@
+#include "mbed.h"
+#include "mRotaryEncoder.h"
+
+/** Test the Library for mechanical rotary encoders with pushbutton 
+ * like this one from alps  http://www.alps.com/WebObjects/catalog.woa/E/HTML/Encoder/Incremental/EC11/EC11E09244BS.shtml
+ * should work for any other incremental encoder with button
+ */
+
+// mbed LEDs
+DigitalOut led1(LED1);
+DigitalOut led2(LED2);
+DigitalOut led3(LED3);
+DigitalOut led4(LED4);
+
+Serial pcout(USBTX, USBRX);
+
+
+//mRotaryEncoder(PinName pinA, PinName pinB, PinName pinSW, PinMode pullMode=PullUp, int debounceTime_us=1000)
+mRotaryEncoder  wheel(p21, p22, p23);
+
+
+int lastGet;
+int thisGet;
+
+
+bool enc_pressed = false;      // Button of rotaryencoder was pressed
+bool enc_rotated = false;      // rotary encoder was totaded left or right
+
+
+//interrup-Handler for button on rotary-encoder
+void trigger_sw() {
+    enc_pressed = true;               // just set the flag, rest is done outside isr
+}
+
+//interrup-Handler for rotary-encoder rotation
+void trigger_rotated() {
+    enc_rotated = true;               // just set the flag, rest is done outside isr
+}
+
+
+// display int-Value on the 4 LEDS
+void displayLED(int value) {
+    switch (abs(value) % 4) { // Get 2 LSBs and display sequence on mbed LEDs
+        case 0:
+            led1 = 1;
+            led2 = 0;
+            led3 = 0;
+            led4 = 0;
+            break;
+        case 1:
+            led1 = 0;
+            led2 = 1;
+            led3 = 0;
+            led4 = 0;
+            break;
+        case 2:
+            led1 = 0;
+            led2 = 0;
+            led3 = 1;
+            led4 = 0;
+            break;
+        default:
+            led1 = 0;
+            led2 = 0;
+            led3 = 0;
+            led4 = 1;
+            break;
+    } // switch
+}
+
+int main() {
+
+    pcout.printf("\n\rconnected to mbed...\n\r");
+
+    //Int-Handler
+    // call trigger_sw() when button of rotary-encoder is pressed
+    wheel.attachSW(&trigger_sw);
+
+    // call trigger_rot() when the shaft is rotaded left or right
+    wheel.attachROT(&trigger_rotated);
+
+    lastGet = 0;
+
+    // set encrotated, so position is displayed on startup
+    enc_rotated = true;
+
+    while (1) {
+
+
+        // shaft has been rotated?
+        if (enc_rotated) {
+            enc_rotated = false;
+
+            thisGet = wheel.Get();
+
+            displayLED(thisGet);
+            pcout.printf ("Pulses is: %i\n\r", thisGet);
+
+        }
+
+
+        // Button pressed?
+        if (enc_pressed) {
+            enc_pressed = false;
+            printf("triggered!\n\r");
+
+            wheel.Set(0);
+
+            //Update displays
+            thisGet = wheel.Get();
+            displayLED(thisGet);
+            pcout.printf ("\n\rPulses is: %i\n\r", thisGet);
+
+        }
+        //do something else
+        
+    }
+
+}