for SOFT_UART, set initial state of pin to HIGH ("idle")

#329
Optiboot · Oct 21, 2021 · c377eb8 · c377eb8
1 parent c9bbfb2
commit c377eb8
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/optiboot/bootloaders/optiboot/optiboot.c b/optiboot/bootloaders/optiboot/optiboot.c
@@ -814,7 +814,8 @@ int main(void) {
 #endif
 
 #if SOFT_UART
-  /* Set TX pin as output */
+  /* Set TX pin as HIGH output */
+  UART_PIN |= _BV(UART_TX_BIT);
   UART_DDR |= _BV(UART_TX_BIT);
 #endif