diff options
Diffstat (limited to 'edid_injector.c')
| -rw-r--r-- | edid_injector.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/edid_injector.c b/edid_injector.c index fd81a1d..454c42e 100644 --- a/edid_injector.c +++ b/edid_injector.c @@ -289,8 +289,12 @@ int main(void) PMIC_LOLVLEN_bm
| PMIC_MEDLVLEN_bm
| PMIC_HILVLEN_bm;
- sei();
+
+ PORTC_PIN2CTRL = PORT_OPC_WIREDANDPULL_gc;
+ PORTC_DIRCLR = _BV(2);
+ PORTC_OUTSET = _BV(2);
+ sei();
delay_ms(20);
/* EDID standard requires a host to wait for 20ms after switching +5V
@@ -298,9 +302,12 @@ int main(void) * Since uC supply == display +5V supply we're waiting 20ms here.
*/
for(;;) {
- if( 0 == edid_readFromDisplay() ) {
- edid_writeToEEPROM();
- edid_readFromEEPROM();
+ /* Only read a new EDID setting if PC2 is pulled low */
+ if( !(PORTC_IN & _BV(2)) ) {
+ if( 0 == edid_readFromDisplay() ) {
+ edid_writeToEEPROM();
+ edid_readFromEEPROM();
+ }
}
delay_ms(1000);
}
|