Flashing programmable LEDs (b-e)

[Jeeva K]

Hi,

We’re thinking to show our application status/levels using the device programmble LEDs by flashing.

How can I perform LED blinking (with different rates) on programmable LEDs ( b-e) using mts-io-sysfs command. I’ve tried with LED-FLASHING ( 2) option but the command accepts only 1 and 0 ( ON/OFF).

Regards,
Jeeva

[Mike Fiore]

Hi Jeeva,
Which version of CoreCDP are you running on your OCG?

-Mike

[Jeeva K]

Hi Mike,

we’re using coreCDP 2.0.2.

Regards,
Jeeva

[Mike Fiore]

Jeeva,
Unfortunately CoreCDP 2.0.2 doesn’t support flashing for all LED’s. There is a bug in the mts-io-sysfs command which shows a flashing option for the LED’s.

-Mike

[Jeeva K]

Hi Mike,

Thanks, Is there any workaround for this issue? or Do I’ve to update the firmware to latest version? Please suggest me the better solution.

Regards,
Jeeva

[Mike Fiore]

Jeeva,
CoreCDP 2.2.2 doesn’t support this feature either, so updating wouldn’t help. I would suggest writing a simple bash script to toggle the LED using mts-io-sysfs. Here’s an example:

#!/bin/bash

if [ $# -ne 2 ]; then
    echo "usage: $0 <sysfs file> <frequency (us)>"
    exit
fi

on=1

while true; do
    mts-io-sysfs store $1 $on
    usleep $2
    on=$((1-on))
done

-Mike

[Author]

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