How to Change sensor1 flow sensor input pin on pi zero2w ?

[ronnie]

I’m using the pi zero 2w GPIO pins to drive my own valve control circuitry. I want to use one of the GPIO pins for a flow sensor input. Am I correct in assuming changing #define PIN_SENSOR1 pin 14 to something else in Defines.h is all that is necessary?

#elif defined(OSPI) // for OSPi

#define OS_HW_VERSION OSPI_HW_VERSION_BASE
#define PIN_SR_LATCH 22 // shift register latch pin
#define PIN_SR_DATA 27 // shift register data pin
#define PIN_SR_DATA_ALT 21 // shift register data pin (alternative, for RPi 1 rev. 1 boards)
#define PIN_SR_CLOCK 4 // shift register clock pin
#define PIN_SR_OE 17 // shift register output enable pin
#define PIN_SENSOR1 14

[ronnie]

I see now that “#define PIN_SENSOR1 14” does not actually refer to a physical pin. It refers to the header pin named GPIO 14 which is header pin 8.
So, am I correct in assuming changing #define PIN_SENSOR1 “GPIO” 14 to something else in Defines.h is all that is necessary?

[Ray]

The GPIO pin always refer to GPIO pin, it does NOT refer to positional pin. Generally we don’t use positional pin because that’s not how pins are referred to in a program. Please check the OpenSprinkler Pi user manual for details.

[Author]

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