How to know what target code is begin compiled for?

I'm thinking sometthing like..

c++
#ifdef PROCESSOR_A
#define PROCESSOR_A_THING
#elseif PROCESSOR_B
#define PROCESSOR_B_THING
#endif

c++
#ifdef PROCESSOR_A
#define PROCESSOR_A_THING
#elseif PROCESSOR_B
#define PROCESSOR_B_THING
#endif

Or something like that. ??

5 Replies

Maverick•16h ago

Yes, that is how I've always seen it done.

c++
#if defined(ESP8266)
    extern ESP8266WebServer* webGuiServer;
#elif defined(ESP32)
    extern WebServer* webGuiServer;
#endif

c++
#if defined(ESP8266)
    extern ESP8266WebServer* webGuiServer;
#elif defined(ESP32)
    extern WebServer* webGuiServer;
#endif

jim leeOP•16h ago

This is good! But where would I look for the different processor's tags? For example UNO, MEGA, TEENSY, ADAFRUIT XXX? I ask because mosty they use different SPI pins and I want that delt with behind the scenes in a library file. And I've never see them broken into parts like this.

c++
#if defined(xxx)

c++
#if defined(xxx)

nis•16h ago

@jim lee

#if defined(__SAMD21G18A__) | (__SAMD21E18A__)

#if defined(__SAMD21G18A__) | (__SAMD21E18A__)

find build extra flags in boards.txt https://github.com/adafruit/ArduinoCore-samd/blob/master/boards.txt#L113

Maverick•16h ago

Found some info here: https://arduino.stackexchange.com/a/19894

Arduino Stack Exchange

List of Arduino board preprocessor #defines

When one selects a board within Arduino IDE, a preprocessor definition is added to one of the behind-the-scenes files. After a lot of hunting and some good fortune I found that the format of this

jim leeOP•11h ago

nis, thank you!! Mavrick thank you!!

Gaming

Programming

How to know what target code is begin compiled for?

Did you find this page helpful?