X-Git-Url: http://git.tdb.fi/?p=model-railway-devices.git;a=blobdiff_plain;f=arducontrol%2Finterface.c;h=96baba7f0a4d154110bcf826fd804d5f3e7d0f86;hp=96b1f96cd97e8cc1cf78435eb60d0a22123b9b6c;hb=b5f6cc69e07c60ca67e8e736ca2fb90a3ce175ae;hpb=de977f33ed5c55b2b45c8dcae0c0687bd0cbf1e6

diff --git a/arducontrol/interface.c b/arducontrol/interface.c
index 96b1f96..96baba7 100644
--- a/arducontrol/interface.c
+++ b/arducontrol/interface.c
@@ -24,8 +24,7 @@ void interface_check(void)
 {
 	if(recv_overrun)
 	{
-		serial_write(0xFE);
-		serial_write(RECEIVE_OVERRUN);
+		interface_send1(RECEIVE_OVERRUN);
 		recv_overrun = 0;
 	}
 	if(recv_fill>0)
@@ -55,8 +54,7 @@ void process_commands(void)
 		else
 		{
 			length = 0;
-			serial_write(0xFE);
-			serial_write(FRAMING_ERROR);
+			interface_send1(FRAMING_ERROR);
 		}
 
 		recv_tail += length+1;
@@ -67,8 +65,7 @@ void process_commands(void)
 		if(length>0)
 		{
 			uint8_t result = dispatch_command(cmd, length);
-			serial_write(0xFE);
-			serial_write(result);
+			interface_send1(result);
 		}
 	}
 }
@@ -90,6 +87,21 @@ uint8_t dispatch_command(const uint8_t *cmd, uint8_t length)
 		return INVALID_COMMAND;
 }
 
+void interface_send(const uint8_t *cmd, uint8_t length)
+{
+	uint8_t i;
+
+	serial_write(~length);
+	for(i=0; i<length; ++i)
+		serial_write(cmd[i]);
+}
+
+void interface_send1(uint8_t cmd)
+{
+	serial_write(0xFE);
+	serial_write(cmd);
+}
+
 static inline void receive(uint8_t c)
 {
 	if(recv_fill>=sizeof(recv_buf))