Build_Flags

PlatformIO Build Flags

These flags are used to tell the KNX Stack what you wantor need.
You can control the behavier and remove not needed components.
You can finde them in your platformio.ini.

Name	Description	Required
DBG_TRACE
KNX_BUTTON	Pin Number for ProgButton
KNX_DEBUG_SERIAL	Serial where debug logs will be printed. Only if KNX_NO_PRINT is not defined.
KNX_FLASH_OFFSET	Offset in Flash where the UserFlash starts. Must be a multiple of 4096
KNX_FLASH_SIZE	Size of UserFlash. Must be multiple of 4096. Only if USE_RP2040_EEPROM_EMULATION is not defined.
KNX_LED	Pin Number for ProgLED. Also used for fatal Error display.
KNX_NO_AUTOMATIC_GLOBAL_INSTANCE	Stack won't create the knx instance automaticly. You need to create it manually.
KNX_NO_DEFAULT_UART	Create a knx instance without set KNX_SERIAL.
KNX_NO_SPI	Don't include SPI library
KNX_NO_PRINT	Don't print debug messages to KNX_DEBUG_SERIAL.
KNX_SERIAL	Serial to the BCU. Default is platform specific Serial.
KNX_WAIT_FOR_ADDR	After seeing a L2 packet start, stay in loop until address bytes are received and the AK/NAK packet is sent.
LWIP_DONT_PROVIDE_BYTEORDER_FUNCTIONS	Core won't provide byteorder functions. Stack provides those already.	yes
NCN5120	Implements function to stop the chip.
NO_KNX_CONFIG	Don't automaticly include the correct medium for your Mask Version.
PIO_FRAMEWORK_ARDUINO_ENABLE_RTTI	Required for RP2040	yes
PROG_BTN_PRESS_MIN_MILLIS	Time the Prog-Button must be pressed minimal.
PROG_BTN_PRESS_MAX_MILLIS	Time the Prog-Button must be pressed maximal.
SMALL_GROUPOBJECT	Reduces the size of each GroupObject from 19 Bytes to 8 Bytes.
USERDATA_SAVE_SIZE
USE_BINSEARCH	Activate binary search in GroupAddressTable. Is faster with many different GroupAddresses.
USE_CEMI_SERVER	Activates CEMI Server. Required for USE_USB.
USE_DATASECURE	Activate support for DataSecure Features.
USE_IP	Activate KNX over IP support. Ony if NO_KNX_CONFIG is not defined.
USE_SAMD_EEPROM_EMULATION	Activate EEPROM Emulation
USE_RF	Activate KNX over RF support. Only if NO_KNX_CONFIG is not defined.
USE_RP2040_EEPROM_EMULATION	EEPROM Emulation from arduino-pico core (max 4k) can be used.
USE_RP2040_LARGE_EEPROM_EMULATION	A RAM-buffered Flash.
USE_TP	Activate KNX over TwistedPair support. Only if NO_KNX_CONFIG is not defined.
USE_USB	Activates features to use it as USB Interface. This will automaticly define USE_CEMI_SERVER

KNX_NO_AUTOMATIC_GLOBAL_INSTANCE

By default the Stack will create a knx instance for you with the correct platform.
Sometimes it is a good option to create this instance by your own. (Because you dont want to use a prog button)
Once you added this flag you can create it by adding following line in your main code:

KnxFacade<xxxPlatform,BauXXX> knx;