X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;ds=sidebyside;f=arducontrol%2Finterface.c;h=a73189648669345eda9a8589bc7d56ab9e94f12d;hb=ae0ea6bd659e35ae9ea324dd010c66f6c176d6ff;hp=63b1ebd1700b0c11d1e193ed1b0c1c3ef4eb0a91;hpb=f2fdee42e25fafe445fc37e695ce736b82610a7a;p=model-railway-devices.git

diff --git a/arducontrol/interface.c b/arducontrol/interface.c
index 63b1ebd..a731896 100644
--- a/arducontrol/interface.c
+++ b/arducontrol/interface.c
@@ -1,4 +1,5 @@
 #include <avr/io.h>
+#include "clock.h"
 #include "interface.h"
 #include "mfx.h"
 #include "monitor.h"
@@ -10,15 +11,19 @@
 static uint8_t cmd_buffer[15];
 static uint8_t cmd_length = 0;
 static uint8_t cmd_read_pos = 0;
+static uint16_t baud_rate = 9600;
+static uint16_t baud_change = 0;
+static uint32_t baud_changed_at = 0;
 
 static uint8_t dispatch_command(const uint8_t *, uint8_t);
+uint8_t interface_command(const uint8_t *, uint8_t);
 
 void interface_init(void)
 {
 	DDRB |= 0x01;
 	DDRD = (DDRD&0xFC)|0x02;
 
-	serial_init(9600);
+	serial_init(baud_rate);
 }
 
 void interface_check(void)
@@ -61,6 +66,21 @@ void interface_check(void)
 		}
 		PORTB &= ~0x01;
 	}
+
+	if(baud_change)
+	{
+		if(!baud_changed_at)
+		{
+			baud_changed_at = clock_get();
+			serial_set_baud(baud_change);
+		}
+		else if(clock_get()-baud_changed_at>3*CLOCK_RATE)
+		{
+			baud_change = 0;
+			serial_set_baud(baud_rate);
+			interface_send1(BAUD_CHANGE_FAILED);
+		}
+	}
 }
 
 static uint8_t dispatch_command(const uint8_t *cmd, uint8_t length)
@@ -80,6 +100,8 @@ static uint8_t dispatch_command(const uint8_t *cmd, uint8_t length)
 		return mfx_command(cmd, length);
 	else if(type==3)
 		return s88_command(cmd, length);
+	else if(type==7)
+		return interface_command(cmd, length);
 	else
 		return INVALID_COMMAND;
 }
@@ -96,3 +118,31 @@ void interface_send1(uint8_t cmd)
 	serial_write(0xFE);
 	serial_write(cmd);
 }
+
+uint8_t interface_command(const uint8_t *cmd, uint8_t length)
+{
+	if(cmd[0]==SET_BAUD_RATE)
+	{
+		if(length!=3)
+			return LENGTH_ERROR;
+
+		uint16_t baud = (cmd[1]<<8)|cmd[2];
+		if(baud!=baud_rate)
+		{
+			if(baud!=baud_change)
+			{
+				baud_change = baud;
+				baud_changed_at = 0;
+			}
+			else
+			{
+				baud_rate = baud_change;
+				baud_change = 0;
+			}
+		}
+	}
+	else
+		return INVALID_COMMAND;
+
+	return COMMAND_OK;
+}