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fix (most) external interrupts on the 9-pin connector

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This commit is contained in:
Joey Castillo
2021-11-30 17:02:42 -05:00
parent 473bd1637a
commit 48ceef7af3
4 changed files with 12 additions and 10 deletions
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11
watch-library/watch/watch_extint.h
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@@ -62,16 +62,17 @@ void watch_disable_external_interrupts();
* want to detect both rising and falling conditions (i.e. button down and button up), use
* INTERRUPT_TRIGGER_BOTH and use watch_get_pin_level to check the pin level in your callback
* to determine which condition caused the interrupt.
* @param pin One of pins BTN_LIGHT, BTN_MODE, BTN_ALARM, or A0-A4. If the pin parameter matches one of
* @param pin One of BTN_LIGHT, BTN_MODE, BTN_ALARM, A0, A1, A3 or A4. If the pin parameter matches one of
* the three button pins, this function will also enable an internal pull-down resistor. If
* the pin parameter is A0-A4, you are responsible for setting any required pull configuration
* using watch_enable_pull_up or watch_enable_pull_down.
* @param callback The function you wish to have called when the button is pressed.
* @param trigger The condition on which you wish to trigger: rising, falling or both.
* @note The alarm button and pin A2 share an external interrupt channel EXTINT[2]; you can only use one
* or the other. However! These pins both have an alternate method of triggering via the RTC tamper
* interrupt, which has the added benefit of not requiring the external interrupt controller at all.
* @see watch_register_extwake_callback
* @note Pins A2 and A4 can also generate interrupts via the watch_register_extwake_callback function, which
* will allow them to trigger even when the watch is in deep sleep mode.
* @warning As of now, A2 is not usable via the watch_register_interrupt_callback function. To enable an
* external interrupt on pin A2, use the watch_register_extwake_callback function. This issue will be
* addressed in a future revision of the watch library.
*/
void watch_register_interrupt_callback(const uint8_t pin, ext_irq_cb_t callback, watch_interrupt_trigger trigger);