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Dependencies:   mbed TextLCD

Files at this revision

API Documentation at this revision

Revision 1:db0e3fb4d3c4, committed 2019-04-10

Comitter:
peps
Date:
Wed Apr 10 22:08:13 2019 +0000
Parent:
0:aed236b6c48e
Commit message:
Improved keyboard handling.

Changed in this revision

main.cpp Show annotated file Show diff for this revision Revisions of this file 
diff -r aed236b6c48e -r db0e3fb4d3c4 main.cpp
--- a/main.cpp	Mon May 21 21:59:31 2018 +0000
+++ b/main.cpp	Wed Apr 10 22:08:13 2019 +0000
@@ -7,10 +7,10 @@
 DigitalOut* _rows[4];
 DigitalIn* _cols[4];
 
-TextLCD lcd(D2,D3,D4,D5,D6,D7); 
+TextLCD lcd(D2,D3,D4,D5,D6,D7);
 
 // Define your own keypad values
-char Keytable[] = { 
+char Keytable[] = {
     '1', '2', '3', 'A', // r0
     '4', '5', '6', 'B', // r1
     '7', '8', '9', 'C', // r2
@@ -20,9 +20,9 @@
 
 int getKeyIndex() {
     int result = -1;
-    for (int r = 0; r < 4; r++) {
+    for (int r = 0; r < 4 && result == -1; r++) {
         _rows[r]->write(1);
-        for(int c = 0;c < 4 ;c++){
+        for(int c = 0; c < 4 && result == -1; c++){
             DigitalIn *col = _cols[c];
             if(col->read() == 1) {
                 result = r*4+c;
@@ -51,10 +51,10 @@
 int main() {
     char key;
     lcd.locate(0,0);
-    lcd.printf("Clean");    
-    
-    init();   
-    
+    lcd.printf("Clean");
+
+    init();
+
     while(1) {
         key = getKey();
         lcd.locate(0,1);