From d0f895105f41c40f9a6a000b3437ad55b1ef9bc6 Mon Sep 17 00:00:00 2001
From: Sadeep Madurange <sadeep@asciimx.com>
Date: Wed, 16 Apr 2025 17:21:15 +0800
Subject: Function to flush RX buffers.

---
 lock/fend.c | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

(limited to 'lock/fend.c')

diff --git a/lock/fend.c b/lock/fend.c
index 853fa24..340daeb 100644
--- a/lock/fend.c
+++ b/lock/fend.c
@@ -21,7 +21,7 @@
 #define RX_PCMSK      PCMSK2
 #define RX_PCINTVEC   PCINT2_vect
 
-uint8_t synced = 0;
+uint8_t sync = 0;
 static volatile uint8_t rxd = 0;
 static volatile uint8_t islock = 0;
 static volatile uint8_t isunlock = 0;
@@ -61,17 +61,17 @@ int main(void)
 	sei();
 
 	for (;;) {
-		if ((islock || isunlock) && !synced) {
+		if ((islock || isunlock) && !sync) {
 			xor(KEY, SYN, buf, WDLEN);
 			do {
-				synced = radio_sendto(txaddr, buf, WDLEN);
+				sync = radio_sendto(txaddr, buf, WDLEN);
 				_delay_ms(10);
-			} while (!synced);
-			synced = 1;
+			} while (!sync);
+			sync = 1;
 		}
 
 		if (rxd) {
-			if (synced) {
+			if (sync) {
 				n = radio_recv(buf, WDLEN);
 				buf[n] = '\0';
 				xor(KEY, buf, key, WDLEN);
@@ -83,7 +83,9 @@ int main(void)
 					xor(key, UNLOCK, buf, WDLEN);
 				}
 				radio_sendto(txaddr, buf, WDLEN);
-				synced = 0;
+				sync = 0;
+			} else {
+				radio_flush_rx();
 			}
 			rxd = 0;
 		}
-- 
cgit v1.2.3