Add functions for sending replies

[model-railway-devices.git] / arducontrol / interface.c

diff --git a/arducontrol/interface.c b/arducontrol/interface.c
index 96b1f96cd97e8cc1cf78435eb60d0a22123b9b6c..96baba7f0a4d154110bcf826fd804d5f3e7d0f86 100644 (file)
--- 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))