Print git revision on startup

firmware/Makefile

@@ -13,9 +13,8 @@ OD=$(PREFIX)-objdump
 OBJCOPYFLAGS = -O binary
 
 BIN=$(CP) -O ihex 
-
 CCBASE = colorchord/embeddedstm32f407
-DEFS =  -DSTM32F40_41xxx  -DHSE_VALUE=8000000
+DEFS =  -DSTM32F40_41xxx  -DHSE_VALUE=8000000 -DREVISION=\"`git rev-parse HEAD`\"
 STARTUP = $(CCBASE)/lib/startup_stm32f40_41xxx.s
 STLIB = $(CCBASE)/STM32F4xx_StdPeriph_Driver
 EMCOM = $(CCBASE)/../embeddedcommon

firmware/main.c

@@ -123,6 +123,7 @@ int main(void)
 	InitSPI2812();
 	adc_init();
 
+	printf("\r\nThis is Sabik-CPU, commit %s.\r\n", REVISION);
 	printf("Operating at %.3fMHz\r\n", fv );
 	
 	int this_samp = 0;