1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
|
#!/bin/bash
skipped=""
tested=""
failed=""
usage()
{
cat <<EOF
This program checks the Pi's (user) gpios.
The program reads and writes all the gpios. Make sure NOTHING
is connected to the gpios during this test.
The program uses the pigpio daemon which must be running.
To start the daemon use the command sudo pigpiod.
Press the ENTER key to continue or ctrl-C to abort...
EOF
read a
}
restore_mode()
{
# $1 gpio
# $2 mode
case "$2" in
0) m="r" ;;
1) m="w" ;;
2) m="5" ;;
3) m="4" ;;
4) m="0" ;;
5) m="1" ;;
6) m="2" ;;
7) m="3" ;;
*)
echo "invalid mode $2 for gpio $1"
exit 1
esac
$(pigs m $1 $m)
}
check_gpio()
{
# $1 gpio
# $2 i2c
m=$(pigs mg $1) # save mode
L=$(pigs r $1) # save level
s=$(pigs m $1 w)
if [[ $s = "" ]]
then
f=0
tested+="$1 "
# write mode tests
$(pigs w $1 0)
r=$(pigs r $1)
if [[ $r -ne 0 ]]; then f=1; echo "Write 0 to gpio $1 failed."; fi
$(pigs w $1 1)
r=$(pigs r $1)
if [[ $r -ne 1 ]]; then f=1; echo "Write 1 to gpio $1 failed."; fi
# read mode tests using pull-ups and pull-downs
$(pigs m $1 r)
if [[ $2 -eq 0 ]]
then
$(pigs pud $1 d)
r=$(pigs r $1)
if [[ $r -ne 0 ]]; then f=1; echo "Pull down on gpio $1 failed."; fi
fi
$(pigs pud $1 u)
r=$(pigs r $1)
if [[ $r -ne 1 ]]; then f=1; echo "Pull up on gpio $1 failed."; fi
$(pigs pud $1 o) # switch pull-ups/downs off
$(pigs w $1 $L) # restore original level
restore_mode $1 $m # restore original mode
if [[ $f -ne 0 ]]; then failed+="$1 "; fi
else
skipped+="$1 "
fi
} 2>/dev/null
usage
v=$(pigs hwver)
if [[ $v < 0 ]]
then
echo "The pigpio daemon wasn't found. Did you sudo pigpiod?"
exit
fi
echo "Testing..."
for ((i=0; i<4; i++)) do check_gpio $i 1; done
for ((i=4; i<16; i++)) do check_gpio $i 0; done
if [[ $v -ge 16 ]];
then
check_gpio 16 0
else
skipped+="16 "
fi
for ((i=17; i<28; i++)) do check_gpio $i 0; done
for ((i=28; i<30; i++)) do check_gpio $i 1; done
for ((i=30; i<32; i++)) do check_gpio $i 0; done
if [[ $failed = "" ]]; then failed="None"; fi
echo "Skipped non-user gpios: $skipped"
echo "Tested user gpios: $tested"
echo "Failed user gpios: $failed"
|
