Diff: main.cpp

Revision:

0:954607bc2d95

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Tue Aug 02 10:28:54 2011 +0000
@@ -0,0 +1,60 @@
+#include "mbed.h"
+
+DigitalIn enc_pb (p5);
+InterruptIn enc_A (p6);
+InterruptIn enc_B (p7);
+PwmOut led1 (p22);
+PwmOut led2 (p23);
+
+void enc_int_routine (void);
+
+bool enc_A_state;
+bool enc_B_state;
+bool old_enc_A_state;
+bool old_enc_B_state;
+int val_min = 0;
+int val_max = 100;
+int val = ((val_max - val_min) / 2) + val_min;
+int val_old = val;
+
+int main() {
+    enc_pb.mode(PullUp);
+    enc_A.mode(PullUp);
+    enc_B.mode(PullUp);
+    enc_A_state = enc_A;
+    enc_B_state = enc_B;
+    enc_A.rise(&enc_int_routine);
+    enc_B.rise(&enc_int_routine);
+    enc_A.fall(&enc_int_routine);
+    enc_B.fall(&enc_int_routine);
+    while (1) {
+        if (val != val_old) {
+            printf("\n\r%i",val);
+        } // if (val != val_old)
+        val_old = val;
+        if (enc_pb) {
+            led1 = val / 100.0;
+            led2 = 1.0 - (val / 100.0);
+        } else {
+            printf("button\n\r");
+            led1 = 0;
+            led2 = 0;
+        } // if (enc_pb)
+    } // while(1)
+} // end main
+
+void enc_int_routine (void) {
+    old_enc_A_state = enc_A_state;
+    old_enc_B_state = enc_B_state;
+    enc_A_state = enc_A;
+    enc_B_state = enc_B;
+    if (((enc_A_state != old_enc_A_state) && (enc_B_state != old_enc_B_state)) || ((enc_A_state == old_enc_A_state) && (enc_B_state == old_enc_B_state))) {
+        val = val;
+    } else {
+        if (enc_A_state ^ old_enc_B_state) {
+            val -= 1;
+        } else {
+            val += 1;
+        } // (enc_A_state ^ old_enc_B_state)
+    } // if ((enc_A_state != old_enc_A_state) && (enc_B_state != old_enc_B_state))
+} // end enc_A_int_routine
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