I need to use a pin on the px4fmu-v2 with interrupt capability to measure frequency. My configuration requires 10 servos, the 8 main pwm outputs and 2 of the aux pwm outputs. I recently learned the the fmu-v2 doesn't support
mode_pwm_gpio where AUX1-4 are pwm and AUX 5-6 are GPIO, meaning that none of those pins are available to use.
The only example of an interrupt capability I've found is for the GPIO pins (https://github.com/PX4/Firmware/blob/master/src/drivers/pwm_input/pwm_input.cpp)
Are there other pins that can use interrupts (ADC, etc)?
It'd be really nice if I didn't have to have a whole separate micro controller for computing the frequency.