ChibiOS Free Embedded RTOS

Posted: **Fri Dec 19, 2014 3:19 am**

Does anyone know of a way to set up an interrupt to trigger when a certain pin is high? I don't see predefined functions for this in the HAL drivers. Any help is appreciated. Thank you in advance!!

Posted: **Fri Dec 19, 2014 3:58 am**

I need an interrupt for when H10, H11, H12, and I0 go high. Would I use the EXT driver with a config structure like this?

Code: Select all

static const EXTConfig extHcfg = {
  {
    {EXT_CH_MODE_RISING_EDGE | EXT_CH_MODE_AUTOSTART | EXT_MODE_GPIOI, motScb},
    {EXT_CH_MODE_DISABLED, NULL},
    {EXT_CH_MODE_DISABLED, NULL},
    {EXT_CH_MODE_DISABLED, NULL},
    {EXT_CH_MODE_DISABLED, NULL},
    {EXT_CH_MODE_DISABLED, NULL},
    {EXT_CH_MODE_DISABLED, NULL},
    {EXT_CH_MODE_DISABLED, NULL},
    {EXT_CH_MODE_DISABLED, NULL},
    {EXT_CH_MODE_DISABLED, NULL},
    {EXT_CH_MODE_RISING_EDGE | EXT_CH_MODE_AUTOSTART | EXT_MODE_GPIOH, motXcb}, // 10
    {EXT_CH_MODE_RISING_EDGE | EXT_CH_MODE_AUTOSTART | EXT_MODE_GPIOH, motYcb}, // 11
    {EXT_CH_MODE_RISING_EDGE | EXT_CH_MODE_AUTOSTART | EXT_MODE_GPIOH, motZcb}, // 12
    {EXT_CH_MODE_DISABLED, NULL},
    {EXT_CH_MODE_DISABLED, NULL},
    {EXT_CH_MODE_DISABLED, NULL},
    {EXT_CH_MODE_DISABLED, NULL},
    {EXT_CH_MODE_DISABLED, NULL},
    {EXT_CH_MODE_DISABLED, NULL},
    {EXT_CH_MODE_DISABLED, NULL},
    {EXT_CH_MODE_DISABLED, NULL},
    {EXT_CH_MODE_DISABLED, NULL},
    {EXT_CH_MODE_DISABLED, NULL}
  }
};

Posted: **Fri Dec 19, 2014 8:50 am**

Hi,

The configuration looks correct.

Giovanni

ChibiOS Free Embedded RTOS

Interrupt when pin high

Interrupt when pin high

Re: Interrupt when pin high

Re: Interrupt when pin high