NFC-Doorlock/ESP8266-Firmware
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scanAsync improved

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This commit is contained in:
Jean Jacques Avril 2021-09-29 22:31:05 +02:00
parent c65d505969
commit 69e6e69c77
1 changed files with 7 additions and 35 deletions
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40
src/Keyboard.cpp
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@ -67,41 +67,13 @@ void Keyboard::scanAsync()
/** Without delay - scanning only one column per cycle **/
if (millis() < _timeElapsed + this->_debounce)
return;
uint8_t key = 0;
switch (_current_scan_col)
{
default:
pcf8574->digitalWrite(7, LOW);
_current_scan_col = 1;
break;
case 1:
{
uint8_t key = 4*_current_scan_col;
scanColumn(&key, 1, 4);
pcf8574->digitalWrite(6, LOW);
pcf8574->digitalWrite(7, HIGH);
_current_scan_col = 2;
break;
}
case 2:
{
key=4;
scanColumn(&key, 1, 4);
pcf8574->digitalWrite(5, LOW);
pcf8574->digitalWrite(6, HIGH);
_current_scan_col = 3;
break;
}
case 3:
{
key=8;
scanColumn(&key, 1, 4);
pcf8574->digitalWrite(7, LOW);
pcf8574->digitalWrite(5, HIGH);
_current_scan_col = 1;
break;
}
break;
}
pcf8574->digitalWrite(7-(_current_scan_col+1)%3, LOW);
pcf8574->digitalWrite(7-_current_scan_col, HIGH);
_current_scan_col++;
if(_current_scan_col>2)
_current_scan_col = 0;
}
void Keyboard::scanColumn(uint8_t* key_ptr, uint8_t start, uint8_t stop){