improved key scan further:added reboot possibility by input of # times pin length

2025-10-06 17:08:02 +02:00
parent 637c85e885
commit 1d35684c53
2 changed files with 18 additions and 4 deletions
@@ -82,10 +82,14 @@ bool Keypad::getKeys() {
 // Private : Hardware scan
 void Keypad::scanKeys() {
 	// Re-intialize the row pins. Allows sharing these pins with other hardware.
+	for (byte r=0; r<sizeKpd.rows; r++) {
+		pin_mode(rowPins[r],OUTPUT);
+		pin_write(rowPins[r],HIGH);
+	}
+	delayMicroseconds(3);	// Let pins settle.
 	for (byte r=0; r<sizeKpd.rows; r++) {
 		pin_mode(rowPins[r],INPUT_PULLUP);
 	}
-	delayMicroseconds(1);	// Let pins settle.
 	// bitMap stores ALL the keys that are being pressed.
 	for (byte c=0; c<sizeKpd.columns; c++) {
 		pin_mode(columnPins[c],OUTPUT);