How to control CFA 635 LEDs in LCDProc?

[p4blu]

Hi,

There is any software (linux) to control cfa 635 leds?

Thanks

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[CF Tech]

I believe that LCDproc ( http://lcdproc.org/ ) can control the 635's LEDs . . as well as all the rest of the LCD's functions:

From this thread: https://forum.crystalfontz.com/showthread.php/6923-programming-CFA-635-LED

solved

for lcdproc:
"output <number>"

the led-color is set by a bit-mask: 1111 1111
first block sets the color of the led to green, the second block to red.
if both --> orange
<number> is the byte or hex value of the bit-mask

thanks

 

[p4blu]

sorry, but I cant understand it
I use lcdproc, and make my code in bash, acessing telnet etc..

its just digit this at telnet window?

 

[CF Tech]

I am no expert on LCDproc . . .

From this page: http://lcdproc.sourceforge.net/docs/current-user.html

Example 5.8. Pyramid: How to use the LED output from the client

telnet localhost 13666
hello
output 67​

will light up LEDs 3, 4 and 9.

output 0​

will clear all LEDs.

Based on that and the previous quote I think this:

output 15​

( 0b 0000 1111 ) should make the all the LEDs red.

output 240​

( 0b 1111 0000 ) should make the all the LEDs green.

output 172​

( 0b 1010 1100 ) should make the one orange, one green, one red, and one off.

Can you try those over telnet and see if the LEDs change?

 

[p4blu]

hello,

Now i understand, its working!
it uses binary but writen in decimal..

thanks

 

[p4blu]

there is anyway to get the actual states of the leds?
i want to make and script like
script -l [0,1,2,3] -c [red,green,amber]
but I need to know the actual state

 

[CF Tech]

there is anyway to get the actual states of the leds? . . .

The module's firmware command set is able to return the state of the LEDs, but I do not know if LCDProc actually supports the operation. Is there an "input" that corresponds to the "output" function?

 

[p4blu]

hello,

unfortunately no
"huh? Invalid command "input""

I had to make an code to load (at beggining) and to save (at finish) the "last_state", so I can change just a specifc led, and not the 4 ones

 

[CF Tech]

. . . "huh? Invalid command "input"" . . .

bummer

. . . I had to make an code to load (at beggining) and to save (at finish) the "last_state", so I can change just a specifc led, and not the 4 ones

Sounds like you have it going then? Awesome if so! Can you share your code/script so others can see how you did it?

 

[p4blu]

#!/bin/bash

led=$1
color=$2
control=(`cat /tmp/last_state`)

if [ "$control" == "" ]; then
echo "null file, changed to 00000001\n"
echo "0 0 0 0 0 0 0 1" > /tmp/last_state
else
echo "last state recover:"
echo ${control[@]}
fi

control=(`cat /tmp/last_state`)


if [ $led == "led1" ]
then
colorbit1=3
colorbit2=7
elif [ $led == "led2" ]
then
colorbit1=2
colorbit2=6
elif [ $led == "led3" ]
then
colorbit1=1
colorbit2=5
elif [ $led == "led4" ]
then
colorbit1=0
colorbit2=4
fi


if [ $color == "green" ]
then
colorbit1_value=0
colorbit2_value=1
elif [ $color == "red" ]
then
colorbit1_value=1
colorbit2_value=0
elif [ $color == "amber" ]
then
colorbit1_value=1
colorbit2_value=1
elif [ $color == "off" ]
then
colorbit1_value=0
colorbit2_value=0
fi

control[$colorbit1]=$colorbit1_value
control[$colorbit2]=$colorbit2_value

echo "new state update:"
echo ${control[@]}
control2=${control[@]}
echo $control2 > /tmp/last_state
bin="${control2// /}"

 

[p4blu]

sorry for the delay..

copy this code, into a program.sh

chmod +x program.sh

mv program.sh /usr/bin/program.sh (so you can access from any folder...)

then use:

program ledX [1-4] color [green, red or amber]