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core: Introduce digitalPinTo(PortDevice|PinIndex) #187

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Merged
DhruvaG2000 merged 2 commits into from
Jun 1, 2026
Merged

core: Introduce digitalPinTo(PortDevice|PinIndex) #187

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784a9ca
core: Introduce digitalPinTo(PortDevice|PinIndex)
facchinm Apr 7, 2026
c3d5921
core: Define F_CPU for ARM targets
soburi Jun 1, 2026
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8 changes: 8 additions & 0 deletions cores/arduino/Arduino.h
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Original file line number Diff line number Diff line change
Expand Up @@ -131,15 +131,23 @@ void noInterrupts(void);

int digitalPinToInterrupt(pin_size_t pin);

// These defines can be overridden by variant.h if implemented
#define digitalPinToPort(x) (x)
#define digitalPinToBitMask(x) (x)
#define portOutputRegister(x) (x)
#define portInputRegister(x) (x)

const struct device *digitalPinToPortDevice(pin_size_t pinNumber);
int digitalPinToPinIndex(pin_size_t pinNumber);

#if defined(CONFIG_PWM) || defined(CONFIG_DAC)
void analogWriteResolution(int bits);
#endif

#if defined(__arm__)
#define F_CPU (SystemCoreClock)

@DhruvaG2000 DhruvaG2000 Jun 1, 2026

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Please split the F cpu change into its own commit.

#endif
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soburi marked this conversation as resolved.

#include <variant.h>

#if !defined(LED_BUILTIN) && defined(ZARD_LED_BUILTIN)
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12 changes: 12 additions & 0 deletions cores/arduino/zephyrCommon.cpp
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Expand Up @@ -218,6 +218,18 @@ void yield(void) {
k_yield();
}

const struct device *digitalPinToPortDevice(pin_size_t pinNumber) {
RETURN_ON_INVALID_PIN(pinNumber, nullptr);

return arduino_pins[pinNumber].port;
}

int digitalPinToPinIndex(pin_size_t pinNumber) {
RETURN_ON_INVALID_PIN(pinNumber, -1);
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soburi marked this conversation as resolved.

return arduino_pins[pinNumber].pin;
}

/*
* The ACTIVE_HIGH flag is set so that A low physical
* level on the pin will be interpreted as value 0.
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