Not able to compile with pio

[mastodon987]

Hi, i was not able to compile binary due to errors. I'm using branch linux b1d9b8f. using rpi2 and raspbian installed. i used command "pio run -e linux_repeater".

Here are errs:

Indexing .pio/build/linux_repeater/lib5f4/libCrypto.a
Compiling .pio/build/linux_repeater/lib6a2/Adafruit BusIO/Adafruit_GenericDevice.cpp.o
Compiling .pio/build/linux_repeater/lib6a2/Adafruit BusIO/Adafruit_I2CDevice.cpp.o
Compiling .pio/build/linux_repeater/lib6a2/Adafruit BusIO/Adafruit_SPIDevice.cpp.o
.pio/libdeps/linux_repeater/Adafruit BusIO/Adafruit_SPIDevice.cpp: In constructor ‘Adafruit_SPIDevice::Adafruit_SPIDevice(int8_t, int8_t, int8_t, int8_t, uint32_t, BusIOBitOrder, uint8_t)’:
.pio/libdeps/linux_repeater/Adafruit BusIO/Adafruit_SPIDevice.cpp:77:48: error: ‘digitalPinToPort’ was not declared in this scope; did you mean ‘digitalPinToInterrupt’?
   77 |   csPort = (BusIO_PortReg *)portOutputRegister(digitalPinToPort(cspin));
      |                                                ^~~~~~~~~~~~~~~~
      |                                                digitalPinToInterrupt
.pio/libdeps/linux_repeater/Adafruit BusIO/Adafruit_SPIDevice.cpp:77:29: error: ‘portOutputRegister’ was not declared in this scope
   77 |   csPort = (BusIO_PortReg *)portOutputRegister(digitalPinToPort(cspin));
      |                             ^~~~~~~~~~~~~~~~~~
.pio/libdeps/linux_repeater/Adafruit BusIO/Adafruit_SPIDevice.cpp:78:15: error: ‘digitalPinToBitMask’ was not declared in this scope
   78 |   csPinMask = digitalPinToBitMask(cspin);
      |               ^~~~~~~~~~~~~~~~~~~
.pio/libdeps/linux_repeater/Adafruit BusIO/Adafruit_SPIDevice.cpp:84:33: error: ‘portInputRegister’ was not declared in this scope
   84 |     misoPort = (BusIO_PortReg *)portInputRegister(digitalPinToPort(misopin));
      |                                 ^~~~~~~~~~~~~~~~~
Compiling .pio/build/linux_repeater/lib9f4/Adafruit seesaw Library/Adafruit_Crickit.cpp.o
*** [.pio/build/linux_repeater/lib6a2/Adafruit BusIO/Adafruit_SPIDevice.cpp.o] Error 1

Edit:
Okay it seems that helped undefing BUSIO_USE_FAST_PINIO for Adafruit BusIO by patch script before pio starts to compile.

[l5yth]

Adafruit_BusIO enables BUSIO_USE_FAST_PINIO on 32-bit ARM, which needs the AVR-style port macros (digitalPinToPort, portOutputRegister, ...) that ArduLinux doesn't provide. Checking the guard chain in Adafruit_SPIDevice.h:

target	FAST_PINIO
__arm__ (Pi 2, Pi Zero/1, 32-bit Raspbian)	on -> build fails
__aarch64__ (Pi 4/5 64-bit)	off -> builds
x86_64	off -> builds

So this is 32-bit ARM only, which is why it hasn't shown up in other reports - they were all 64-bit.

Your workaround is the right one for now. Two notes for anyone hitting this:

• -DBUSIO_USE_FAST_PINIO=0 does not work - the header #defines it unconditionally in that branch, so the flag is just overridden.
• -DPORTDUINO does disable it, but don't - RadioLib branches on PORTDUINO too (BuildOpt.h) and switches to the "Arduino megaAVR" platform with different pin casts, silently changing the radio HAL.

The real fix is upstream in Adafruit_BusIO, adding ARDULINUX_PLATFORM to the exclusion list alongside PORTDUINO - same issue @rgrizzell hit cross-compiling for armhf (meshcore-dev/MeshCore#2025).

The desired fix is getting upstream to accept the PR: adafruit/Adafruit_BusIO#156