Include date and git revision in the eeprom variable

... in order to be able to find out which firmware version is this MCU
running. This roughly corresponds to the commit
49420b56b31e113f4c40128c530f2e585a9f8061
of project Tinyboard.

diff --git a/firmware/Makefile b/firmware/Makefile
index 1b0113eab0835166c7648ed1dced01769b1b9228..726558bdcdc170f26d2156397aacfe613359c0d5 100644 (file)
--- a/firmware/Makefile
+++ b/firmware/Makefile
@@ -1,7 +1,7 @@
 
 PROGRAM=lights
-SRC=main.c logging.c adc.c pwm.c tmr.c pwmled.c gpio.c ambient.c pattern.c \
-       buttons.c battery.c control.c
+SRC=version.c main.c logging.c adc.c pwm.c tmr.c pwmled.c gpio.c ambient.c \
+       pattern.c buttons.c battery.c control.c
 OBJ=$(SRC:.c=.o)
 
 
@@ -63,5 +63,10 @@ objdump: $(PROGRAM).elf
 clean:
        rm -f $(PROGRAM).hex $(PROGRAM).eep $(PROGRAM).elf *.o *.s eeprom.raw
 
-.PHONY: all clean dump_eeprom program program_flash program_eeprom objdump
+version.c:
+       ./version.pl > version.c
+
+.PHONY: all clean dump_eeprom program program_flash program_eeprom objdump \
+       version.c
+
 

diff --git a/firmware/version.pl b/firmware/version.pl
new file mode 100755 (executable)
index 0000000..4052844
--- /dev/null
+++ b/firmware/version.pl
@@ -0,0 +1,32 @@
+#!/usr/bin/perl -w
+
+use strict;
+use POSIX qw(strftime);
+
+my $git = `git rev-parse --short HEAD`;
+chomp $git;
+
+my $now = strftime('%Y%m%d', localtime(time));
+
+print <<EOF;
+/* DO NOT EDIT - GENERATED BY $0 */
+
+#include <avr/eeprom.h>
+
+unsigned char version[] EEMEM = {
+EOF
+
+print hex2c($now, "date");
+print hex2c($git, "git revision");
+
+print "};\n\n/* EOF - this file has not been truncated */\n\n";
+
+sub hex2c {
+       my ($data, $comment) = @_;
+
+       my $data1 = $data;
+       $data1 .= '0' if (length($data1) & 1 == 1);
+       $data1 =~ s/(..)/0x$1, /g;
+       return "\t$data1 /* $comment $data */\n";
+}
+