Allow time for signals to settle

PaulStoffregen · Jun 18, 2023 · 1c6fa24 · 1c6fa24
1 parent 6a2b87a
commit 1c6fa24
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/src/Keypad.cpp b/src/Keypad.cpp
@@ -90,6 +90,7 @@ void Keypad::scanKeys() {
 	for (byte c=0; c<sizeKpd.columns; c++) {
 		pin_mode(columnPins[c],OUTPUT);
 		pin_write(columnPins[c], LOW);	// Begin column pulse output.
+		delayMicroseconds(10);		// Allow time for signals to settle
 		for (byte r=0; r<sizeKpd.rows; r++) {
 			bitWrite(bitMap[r], c, !pin_read(rowPins[r]));  // keypress is active low so invert to high.
 		}