GPIO LED Control

[ricardojlrufino]

Just sharing how to control LED directly via GPIO

  int fd;
    if ((fd = open("/dev/cpld_periph", O_RDWR)) < 0){
        printf("Open error on /dev/gpiog\n");
        exit(0);
    }

    printf("LED OFF \n");
    ioctl(fd, _IO(0x70, 0x1b), 0);

    sleep(2);

    printf("LED ON  \n");
    ioctl(fd, _IO(0x70, 0x1c), 0);

Only blue led at this time....

[roleoroleo]

Interesting...

[roleoroleo]

After using 0x1c to switch on the led, you can use:

ioctl(fd, _IO(0x70, 0x1), 0);   //blue on
ioctl(fd, _IO(0x70, 0x2), 0);   //blue off
ioctl(fd, _IO(0x70, 0x3), 0);   //blue blink fast
ioctl(fd, _IO(0x70, 0x4), 0);   //blue blink slow

ioctl(fd, _IO(0x70, 0x9), 0);   //orange on
ioctl(fd, _IO(0x70, 0xa), 0);   //orange off
ioctl(fd, _IO(0x70, 0xb), 0);   //orange blink fast
ioctl(fd, _IO(0x70, 0xc), 0);   //orange blink slow

[Arkady23]

Yes, only this algorithm works on CN17, outdoor, etc. with Hi3518ev200. https://github.com/npetrovski/yi-home-led/tree/master/src

[ricardojlrufino]

Using GPIOfs

• Pinos do IR_CUT echo 235 > /sys/class/gpio/export echo 236 > /sys/class/gpio/export

echo out > /sys/class/gpio/gpio235/direction echo out > /sys/class/gpio/gpio236/direction

echo 0 > /sys/class/gpio/gpio235/value echo 1 > /sys/class/gpio/gpio236/value (red wire)

• blue echo 237 > /sys/class/gpio/export echo out > /sys/class/gpio/gpio237/direction echo 1 > /sys/class/gpio/gpio237/value (active low)

• Orange echo 145 > /sys/class/gpio/export echo out > /sys/class/gpio/gpio145/direction echo 1 > /sys/class/gpio/gpio145/value (active low)

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