X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=src%2Fao_serial.c;fp=src%2Fao_serial.c;h=7bc11b979ac38137abd5e62c4a263711c5f097bf;hb=1150aa850f5a025b849556e32c4dddb27937d9af;hp=f2f5e69736e6540f07572d90b9ba45a163337059;hpb=2a7956a64935246475f92d44c08369e0230b676a;p=fw%2Faltos

diff --git a/src/ao_serial.c b/src/ao_serial.c
index f2f5e697..7bc11b97 100644
--- a/src/ao_serial.c
+++ b/src/ao_serial.c
@@ -60,7 +60,7 @@ ao_serial_getchar(void) __critical
 		ao_sleep(&ao_usart1_rx_fifo);
 	ao_fifo_remove(ao_usart1_rx_fifo, c);
 	if (serial_echo) {
-		printf("%02x\n", (uint8_t) c);
+		printf("%02x\n", ((int) c) & 0xff);
 		flush();
 	}
 	return c;