Created
November 11, 2020 12:19
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QNAP LCD control
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| #!/bin/bash | |
| TEXT="${@:2:$#}" | |
| function printUsage() { | |
| echo "Usage: $0 <off|on>" | |
| echo "Usage: $0 <1|2> Text Message" | |
| exit 0 | |
| } | |
| function setDisplay() { | |
| if [ ${#2} -gt 15 ]; then | |
| echo "String to set can be max 16 characters!" | |
| exit 1 | |
| fi | |
| printf "Setting line $1 on display to \"%s\"\n" "$2" | |
| # Text we print must be padded to exactly 16 characters to wipe old text | |
| printf "M\f\x`expr $1 - 1` %-16s" "$2" > /dev/ttyS1 | |
| } | |
| if [ $# -eq 0 ]; then | |
| printUsage | |
| fi | |
| stty -F /dev/ttyS1 1200 | |
| if [ $1 = "off" ]; then | |
| echo "Turning display off" | |
| echo -e "M^\x0" > /dev/ttyS1 | |
| exit 0 | |
| fi | |
| if [ $1 = "on" ]; then | |
| echo "Turning display on" | |
| echo -e "M^\x1" > /dev/ttyS1 | |
| exit 0 | |
| fi | |
| if [ $1 = "1" ] || [ $1 = "2" ]; then | |
| setDisplay $1 "$TEXT" | |
| exit 0 | |
| fi | |
| printUsage |
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