test-gpio-pi-zero.sh

#!/bin/bash
RED=`tput setaf 1`
GREEN=`tput setaf 2`
RESET=`tput sgr0`

# test devised by gordonDrogon
function testpin {
    pin=$1
    echo -n "Testing GPIO pin #$pin..."
    gpio mode $pin in
    gpio mode $pin up
    upVal=`gpio read $pin`
    if [ "$upVal" != 1 ]; then
        echo "${RED}[ERROR] - Failed to read '1' on PIN UP${RESET}"
        return
    fi
    gpio mode $pin down
    downVal=`gpio read $pin`
    if [ "$downVal" != 0 ]; then
        echo "${RED}[ERROR] - Failed to read '0' on PIN DOWN${RESET}"
        return
    fi
    echo "${GREEN}[OK]${RESET}"
}

# PINS 8 and 9 ignored
pins=( 0 1 2 3 4 5 6 7 10 11 12 13 14 15 16 21 22 23 24 25 26 27 28 29 30 31 )
for i in "${pins[@]}"; do
    testpin $i
done