From c8ee8aa286b239c66c282712f0b9264c58335821 Mon Sep 17 00:00:00 2001
From: Ronald Schaten <ronald@schatenseite.de>
Date: Thu, 15 Nov 2007 14:42:07 +0000
Subject: [PATCH] Added fuse target to set fuses.

---
 firmware/Makefile | 24 +++++++++++++++++++++++-
 1 file changed, 23 insertions(+), 1 deletion(-)

diff --git a/firmware/Makefile b/firmware/Makefile
index 758c563..055b3de 100644
--- a/firmware/Makefile
+++ b/firmware/Makefile
@@ -1,4 +1,4 @@
-# $Id: Makefile,v 1.1 2006/09/26 18:18:27 rschaten Exp $
+# $Id: Makefile,v 1.2 2007/11/15 14:42:07 rschaten Exp $
 
 AVRDUDE = avrdude -p atmega8 -P /dev/parport0 -c stk200
 
@@ -46,3 +46,25 @@ disasm:	main.bin
 
 cpp:
 	$(COMPILE) -E main.c
+
+# Fuse high byte:
+# 0xc9 = 1 1 0 0   1 0 0 1
+#        ^ ^ ^ ^   ^ \-+-/
+#        | | | |   |   +------ BOOT
+#        | | | |   +---------- EESAVE (preserve EEPROM on Chip Erase -> not preserved)
+#        | | | +-------------- CKOPT
+#        | | +---------------- SPIEN (enable serial programming -> enabled)
+#        | +------------------ WDTON (watchdog timer always on -> disable)
+#        +-------------------- RSTDISBL (disable external reset -> enabled)
+#
+# Fuse low byte:
+# 0x9f = 1 0 0 1   1 1 1 1
+#        ^ ^ \+/   \--+--/
+#        | |  |       +------- CKSEL 3..0 (clock selection -> HF PLL)
+#        | |  +--------------- SUT 1..0 (BOD enabled, fast rising power)
+#        | +------------------ BODEN
+#        +-------------------- BODLEVEL
+# external Crystal ===> CKSEL = 1111
+
+fuses:
+         $(AVRDUDE) -U hfuse:w:0xc9:m -U lfuse:w:0x9f:m