X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=arducontrol%2Fmfx.c;h=8c46fc3123cf40d16ac3fc9f56c74eff7989d70e;hb=5d6f425971266accc2e3d1c6de96a0ba031adb8d;hp=6e843aa288baae240120ccfb0d527bfe278e148d;hpb=188391bc43da8330aa4f9642bb1a23ef180d66e2;p=model-railway-devices.git

diff --git a/arducontrol/mfx.c b/arducontrol/mfx.c
index 6e843aa..8c46fc3 100644
--- a/arducontrol/mfx.c
+++ b/arducontrol/mfx.c
@@ -235,7 +235,7 @@ static void mfx_finish_packet_feedback(OutputPacket *packet, MfxEncodingState *s
 	packet->final_delay = 128;
 }
 
-static void mfx_receive_feedback()
+static void mfx_receive_feedback(uint8_t type)
 {
 	/* The decoder should activate a 52.6 kHz carrier to indicate positive
 	acknowledgement, but so far I've been unable to build a circuit that detects
@@ -255,7 +255,7 @@ static void mfx_receive_feedback()
 	}
 
 	uint8_t reply[2];
-	reply[0] = MFX_FEEDBACK;
+	reply[0] = type;
 	if(current[1]>feedback_threshold)
 	{
 		current[1] -= feedback_threshold;
@@ -391,7 +391,7 @@ uint8_t mfx_command(const uint8_t *cmd, uint8_t length)
 		mask_bits <<= 16;
 		mask_bits |= (uint16_t)(cmd[3]<<8)|cmd[4];
 		mfx_search_packet(mask_bits, mask_size);
-		mfx_receive_feedback();
+		mfx_receive_feedback(MFX_SEARCH_FEEDBACK);
 	}
 	else if(cmd[0]==MFX_ASSIGN_ADDRESS || cmd[0]==MFX_PING)
 	{
@@ -410,7 +410,7 @@ uint8_t mfx_command(const uint8_t *cmd, uint8_t length)
 		else
 		{
 			mfx_ping_packet(addr, id);
-			mfx_receive_feedback();
+			mfx_receive_feedback(MFX_PING_FEEDBACK);
 		}
 	}
 	else if(cmd[0]==MFX_SPEED || cmd[0]==MFX_SPEED_FUNCS8 || cmd[0]==MFX_SPEED_FUNCS16)
@@ -429,7 +429,9 @@ uint8_t mfx_command(const uint8_t *cmd, uint8_t length)
 		uint8_t speed_dir = cmd[3];
 		if((speed_dir&0x7F)==0x7F)
 			return INVALID_VALUE;
-		++speed_dir;
+		// Skip emergency stop
+		if(speed_dir>0)
+			++speed_dir;
 
 		if(cmd[0]==MFX_SPEED)
 			mfx_speed_packet(addr, speed_dir);