OrangePi PC - second led

mariuszb

Hi all,
Orange Pi PC
What is the second motherboard  Led and how it can ON-OFF from within your own program?
(First led is only PowerON ?)

mariuszb

I see that Armbian uses two LEDs (green and red)  great

nopnop2002

$ sudo modprobe gpio_sunxi

$ echo "turn on red led"
$ sudo sh -c "echo 1 > /sys/class/gpio_sw/normal_led/data"
$ echo "turn off red led"
$ sudo sh -c "echo 0 > /sys/class/gpio_sw/normal_led/data"

$ echo "turn on yellow led"
$ sudo sh -c "echo 1 > /sys/class/gpio_sw/standby_led/data"
$ echo "turn off yellow led"
$ sudo sh -c "echo 0 > /sys/class/gpio_sw/standby_led/data"

mariuszb

Can be accesed via WiringOP ? What port number ?

nopnop2002

mariuszb replied at 2016-5-23 01:30
Can be accesed via WiringOP ? What port number ?

1. $ ls -l /sys/class/gpio_sw/*_led
   
2. lrwxrwxrwx 1 root root 0 Jan  5  1970 /sys/class/gpio_sw/normal_led -> ../../devices/platform/gpio_sw.1/gpio_sw/PA15
   
3. lrwxrwxrwx 1 root root 0 Jan  5  1970 /sys/class/gpio_sw/standby_led -> ../../devices/platform/gpio_sw.0/gpio_sw/PL10

Copy code

You can't access via WiringOP

You can access only normal_led via orangepi_PC_gpio_pyH3 about OPI-PC.
https://github.com/duxingkei33/o ... OWER_STATUS_PL10.py

mariuszb

ok

BTW:
in Armbian on Orange Pi PC it loks like this:
You can deactivate trigger as follows:

echo none >/sys/class/leds/green_led/trigger

and then
echo 1 >/sys/class/leds/green_led/brightness  (or red_led)
echo 0 >/sys/class/leds/green_led/brightness

or trigger eg.
echo heartbeat >/sys/class/leds/green_led/trigger

nopnop2002

mariuszb replied at 2016-5-23 15:25
ok

BTW:

GREAT!!
By the environment of Armbian,
You can control GPIO on/off by the following command.

1. sudo sh -c "echo 1 > /sys/devices/platform/gpio_sw.0/gpio_sw/PA6/data"
   
2. sudo sh -c "echo 0 > /sys/devices/platform/gpio_sw.0/gpio_sw/PA6/data"
   
3. sudo sh -c "echo 1 > /sys/devices/platform/gpio_sw.1/gpio_sw/PA13/data"
   
4. sudo sh -c "echo 0 > /sys/devices/platform/gpio_sw.1/gpio_sw/PA13/data"
   

Copy code

If there is another command in armbian, please tell me.

mariuszb

You can use https://github.com/zhaolei/WiringOP to control all port

eg. Bash:

# LED Pin - wiringPi pin 0 is BCM_GPIO 17.

PIN=0

gpio mode $PIN out

while true; do
  gpio write $PIN 1
  sleep 0.5
  gpio write $PIN 0
  sleep 0.5
done

eg. C:

// LED Pin - wiringPi pin 0 is BCM_GPIO 17.

#define        LED        0

int main (void)
{
  printf ("Raspberry Pi blink\n") ;

  wiringPiSetup () ;
  pinMode (LED, OUTPUT) ;

  for (;;)
  {
    digitalWrite (LED, HIGH) ;        // On
    delay (500) ;                // mS
    digitalWrite (LED, LOW) ;        // Off
    delay (500) ;
  }
  return 0 ;
}

nopnop2002

mariuszb replied at 2016-5-26 19:34
You can use https://github.com/zhaolei/WiringOP to control all port

eg. Bash:

I tested gpio mode and gpio write in RPI(raspbian),OPI(lobris),OPI(armbian).

Everything work fine .