Revision 6:9ad19444c9ce, committed 2017-09-26

Comitter:

malcolmlear

Date:

Tue Sep 26 08:09:38 2017 +0000

Parent:

5:7eea83fb1cb4

Commit message:

New Lab Board Test

Changed in this revision

--- a/main.cpp	Fri Jan 27 08:54:23 2017 +0000
+++ b/main.cpp	Tue Sep 26 08:09:38 2017 +0000
@@ -41,8 +41,8 @@
 
 void SetLED(short LEDNo, short LEDState) {
     LEDNo = ((LEDNo - 1) & 0x0007) + 1;               // limit led number
+    LEDState = LEDState & 0x0003;                     // limit led state
     LEDNo = (8 - LEDNo) * 2;                          // offset of led state in 'LEDbits'
-    LEDState = LEDState & 0x0003;                     // limit led state
     LEDState = LEDState << LEDNo;
     short statemask = ((0x0003 << LEDNo) ^ 0xffff);   // mask used to clear led state
     LEDbits = ((LEDbits & statemask) | LEDState);     // clear and set led state
@@ -52,9 +52,8 @@
 short ReadLED(short LEDNo) {
     LEDNo = ((LEDNo - 1) & 0x0007) + 1;               // limit led number
     LEDNo = (8 - LEDNo) * 2;                          // offset of led state in 'LEDbits'
-    short LEDState = LEDbits;
-    LEDState = LEDState >> LEDNo;                     // shift selected led state into ls 2 bits
-    return (LEDState & 0x0003);                       // mask out and return led state
+    short LEDState = (LEDbits >> LEDNo) & 0x0003;     // shift selected led state into ls 2 bits
+    return LEDState;                                  // return led state
 }
 
 short ReadLEDs() {
@@ -71,7 +70,7 @@
     SelInput(5);                                      // select least significant 4 switches in[3:0]
     short Switches = In0 + (In1 << 1) + (In2 << 2) + (In3 << 3);
     SelInput(4);                                      // select most significant 4 switches in[3:0]
-    return (Switches + (In0 << 4)+ (In1 << 5) + (In2 << 6) + (In3 << 7));
+    return (Switches + (In0 << 4) + (In1 << 5) + (In2 << 6) + (In3 << 7));
 }
 
 short ReadSwitch(short SwitchNo) {
@@ -86,11 +85,11 @@
     SelInput(0);                                      // select Keypad top row 
     short Keys = (In0 << 15) + (In1 << 14) + (In2 << 13) + (In3 << 12);
     SelInput(1);                                      // select Keypad second row
-    Keys = Keys + (In0 << 3) + (In1 << 6) + (In2 << 9) + (In3 << 11);   
+    Keys += (In0 << 3) + (In1 << 6) + (In2 << 9) + (In3 << 11);   
     SelInput(2);                                      // select Keypad third row
-    Keys = Keys + (In0 << 2) + (In1 << 5) + (In2 << 8) + In3;  
+    Keys += (In0 << 2) + (In1 << 5) + (In2 << 8) + In3;  
     SelInput(3);                                      // select Keypad forth row
-    Keys = Keys + (In0 << 1) + (In1 << 4) + (In2 << 7) + (In3 << 10);
+    Keys += (In0 << 1) + (In1 << 4) + (In2 << 7) + (In3 << 10);
     return (Keys ^ 0xffff);                           // return inverted (Key press active high)
 }