mirror of https://github.com/joan2937/pigpio
127 lines
2.3 KiB
Bash
Executable File
127 lines
2.3 KiB
Bash
Executable File
#!/bin/bash
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skipped=""
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tested=""
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failed=""
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usage()
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{
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cat <<EOF
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This program checks the Pi's (user) gpios.
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The program reads and writes all the gpios. Make sure NOTHING
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is connected to the gpios during this test.
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The program uses the pigpio daemon which must be running.
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To start the daemon use the command sudo pigpiod.
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Press the ENTER key to continue or ctrl-C to abort...
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EOF
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read a
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}
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restore_mode()
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{
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# $1 gpio
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# $2 mode
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case "$2" in
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0) m="r" ;;
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1) m="w" ;;
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2) m="5" ;;
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3) m="4" ;;
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4) m="0" ;;
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5) m="1" ;;
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6) m="2" ;;
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7) m="3" ;;
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*)
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echo "invalid mode $2 for gpio $1"
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exit 1
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esac
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$(pigs m $1 $m)
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}
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check_gpio()
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{
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# $1 gpio
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# $2 i2c
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m=$(pigs mg $1) # save mode
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L=$(pigs r $1) # save level
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s=$(pigs m $1 w)
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if [[ $s = "" ]]
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then
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f=0
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tested+="$1 "
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# write mode tests
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$(pigs w $1 0)
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r=$(pigs r $1)
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if [[ $r -ne 0 ]]; then f=1; echo "Write 0 to gpio $1 failed."; fi
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$(pigs w $1 1)
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r=$(pigs r $1)
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if [[ $r -ne 1 ]]; then f=1; echo "Write 1 to gpio $1 failed."; fi
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# read mode tests using pull-ups and pull-downs
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$(pigs m $1 r)
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if [[ $2 -eq 0 ]]
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then
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$(pigs pud $1 d)
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r=$(pigs r $1)
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if [[ $r -ne 0 ]]; then f=1; echo "Pull down on gpio $1 failed."; fi
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fi
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$(pigs pud $1 u)
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r=$(pigs r $1)
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if [[ $r -ne 1 ]]; then f=1; echo "Pull up on gpio $1 failed."; fi
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$(pigs pud $1 o) # switch pull-ups/downs off
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$(pigs w $1 $L) # restore original level
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restore_mode $1 $m # restore original mode
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if [[ $f -ne 0 ]]; then failed+="$1 "; fi
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else
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skipped+="$1 "
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fi
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} 2>/dev/null
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usage
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v=$(pigs hwver)
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if [[ $v < 0 ]]
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then
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echo "The pigpio daemon wasn't found. Did you sudo pigpiod?"
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exit
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fi
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echo "Testing..."
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for ((i=0; i<4; i++)) do check_gpio $i 1; done
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for ((i=4; i<16; i++)) do check_gpio $i 0; done
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if [[ $v -ge 16 ]];
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then
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check_gpio 16 0
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else
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skipped+="16 "
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fi
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for ((i=17; i<28; i++)) do check_gpio $i 0; done
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for ((i=28; i<30; i++)) do check_gpio $i 1; done
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for ((i=30; i<32; i++)) do check_gpio $i 0; done
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if [[ $failed = "" ]]; then failed="None"; fi
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echo "Skipped non-user gpios: $skipped"
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echo "Tested user gpios: $tested"
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echo "Failed user gpios: $failed"
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