ARDUINO_SCL_PIN 27 // SCL signal pin ?

[RixtronixLAB]

Dear Members,

I saw at G:\nRF5_SDK_17.0.2_d674dde\components\boards\pca10056.h

#define ARDUINO_SCL_PIN             27    // SCL signal pin

#define ARDUINO_SDA_PIN             26    // SDA signal pin

Does it mean SCL_PIN 27 = P0.27 ?

Thanks

[awneil]

It simply means that wherever in your 'C' source code you use ARDUINO_SCL_PIN, the preprocessor will replace it with 27;

similarly, wherever in your 'C' source code you use ARDUINO_SDA_PIN, the preprocessor will replace it with 26.

How the values 26 & 27 are interpreted depends on the context in which you use them - if you use them in places expecting them to be a pin number within P0, then that is what you'll get.

[RixtronixLAB]

Then, ARDUINO_SCL_PIN             27 will equal to P0.27 on header connector ? thanks