Subversion Repositories svnkaklik

Rev

Go to most recent revision | Details | Last modification | View Log

Rev Author Line No. Line
134 kaklik 1 
#!/bin/sh
2 
prg="adude"
3 
#
4 
help()
5 
{
6 
	echo "prg_fusebit_uc -- read and write fuse bits of the atmega8"
7 
	echo ""
8 
	echo "Usage: prg_fusebit_uc [-hu] -r|-w Freq"
9 
	echo ""
10 
	echo "OPTIONS: -h this help"
11 
	echo "         -r read fuse bytes"
12 
	echo "         -u use uisp instead of avrdude"
13 
	echo "            avrdude can automatically detect dapa or avrusb500."
14 
	echo "            uisp can only be used with the parallel port dapa."
15 
	echo "         -w write fuse bytes such that a given Freq is used"
16 
	echo "            a frequency of 0 means external crystal. Possible"
17 
	echo "            values are 0,1,2,4,8"
18 
	echo ""
19 
	echo "EXAMPLE: program the fuses to 4MHz internal"
20 
	echo "         prg_fusebit_uc -w 4"
21 
	echo ""
22 
	echo "Warning: you can not undo the setting \"external crystal\" unless"
23 
	echo "         you have a crystal that works."
24 
	echo "This script can be easily adapted to different programmer types"
25 
	exit 0
26 
}
27 
while [ -n "$1" ]; do
28 
case $1 in
29 
    -h) help;shift 1;;
30 
    -u) prg="uisp";shift 1;;
31 
    -r) opt_r="1";shift 1;;
32 
    -w) opt_w="1";freq="$2";shift 2;;
33 
    -*) echo "error: no such option $1. -h for help";exit 1;;
34 
    *)  break;;
35 
esac
36 
done
37 
 
38 
if [ -z "$opt_r" -a  -z "$opt_w" ];then
39 
	# one of those options is mandatory
40 
	help
41 
fi
42 
 
43 
hf=0xd9
44 
if [ "$opt_w" = "1" ]; then
45 
	case $freq in
46 
	    0) lf=0xee;echo "Make sure you have a crystal otherwise you can not change this!";sleep 2;;
47 
	    1) lf=0xe1;;
48 
	    2) lf=0xe2;;
49 
	    4) lf=0xe3;;
50 
	    8) lf=0xe4;;
51 
	    *) echo "error: no such frequency, -h for help";exit 1;;
52 
	esac
53 
fi
54 
 
55 
 
56 
if [ "$prg" = "uisp" ]; then
57 
	if [ "$opt_r" = "1" ];then
58 
		set -x
59 
		uisp -dlpt=/dev/parport0 -dprog=dapa --rd_fuses
60 
		set +x
61 
		echo "Explanation: Fuse Low Byte: 0xe1 (1MHz intern), 0xe3 (4MHz intern), "
62 
		echo "             0xe4 (8MHz intern)"
63 
		echo "             Fuse High Byte should be 0xd9"
64 
		exit 0
65 
	fi
66 
	if [ "$opt_w" = "1" ]; then
67 
		set -x
68 
		uisp -dlpt=/dev/parport0 -dprog=dapa --wr_fuse_l=$lf
69 
		uisp -dlpt=/dev/parport0 -dprog=dapa --wr_fuse_h=$hf
70 
		set +x
71 
		exit 0
72 
	fi
73 
 
74 
fi
75 
if [ "$prg" = "adude" ]; then
76 
	if grep "Vendor=0403 ProdID=6001" /proc/bus/usb/devices > /dev/null ; then
77 
		prg="avrusb500"
78 
	else
79 
		prg="dapa"
80 
	fi
81 
	if [ "$opt_r" = "1" ];then
82 
		set -x
83 
		avrdude -p m8 -c $prg -v -q
84 
		set +x
85 
		echo "Explanation: Fuse Low Byte: 0xe1 (1MHz intern), 0xe3 (4MHz intern), "
86 
		echo "             0xe4 (8MHz intern)"
87 
		echo "             Fuse High Byte should be 0xd9"
88 
		exit 0
89 
	fi
90 
	if [ "$opt_w" = "1" ]; then
91 
		set -x
92 
		avrdude -p m8 -c $prg -u -v -U lfuse:w:$lf:m
93 
		avrdude -p m8 -c $prg -u -v -U hfuse:w:$hf:m
94 
		set +x
95 
		exit 0
96 
	fi
97 
fi