Compilation of some Arduino libraries fails for LoRa Thing Plus Explorable

[amirna2]

Subject of the issue

I am testing several very common Arduino Libraries such as ArduinoJSON or the Adafruit sensor Libraries. They all fail with various compilation errors when using the SparkFun Apollo3 Arduino core. I am currently testing with the LoRa explorable board.

Your workbench

• What platform are you using?
  • Macbook Pro - OSX (Big Sur 11.4) - Arduino IDE 1.8.15
• What version of the device are you using? Is there a firmware version?
  • LoRa Things Plus Explorable - Arduino Core 2.1.1
• How is the device wired to your platform?
• How is everything being powered?
  • USB connection to the MackBook Pro
• Are there any additional details that may help us help you?
  • I am testing an example provided by ArduinoJSON library version 6.16.1
  • I validated my development setup with the example provided with the Appolo3 board
    • Tested Example10_DisplayICRevision which shows board revision B0

Steps to reproduce

• Load and install ArduinoJSON library from the Arduino IDE (I used version 6.16.1)
• Open the StringExample.ino
• Select LoRa Thing Plus Explorable as your board

Expected behaviour

• The StringExample.ino should compile successfully

Actual behaviour

• The StringExample.ino fails to compile with the following errors

Compiling sketch...
/Users/anathoo/Library/Arduino15/packages/SparkFun/tools/arm-none-eabi-gcc/8-2018-q4-major/bin/arm-none-eabi-g++ -include /Users/anathoo/Library/Arduino15/packages/SparkFun/hardware/apollo3/2.1.1/variants/LoRa_THING_PLUS_expLoRaBLE/mbed/mbed_config.h -include /Users/anathoo/Library/Arduino15/packages/SparkFun/hardware/apollo3/2.1.1/cores/arduino/sdk/ArduinoSDK.h -iprefix /Users/anathoo/Library/Arduino15/packages/SparkFun/hardware/apollo3/2.1.1/cores/ @/Users/anathoo/Library/Arduino15/packages/SparkFun/hardware/apollo3/2.1.1/variants/LoRa_THING_PLUS_expLoRaBLE/mbed/.cxx-flags -MMD -DARDUINO=10815 -DARDUINO_LoRa_THING_PLUS_expLoRaBLE -DARDUINO_ARCH_MBED -DARDUINO_ARCH_APOLLO3 -DMBED_NO_GLOBAL_USING_DIRECTIVE -DCORDIO_ZERO_COPY_HCI @/Users/anathoo/Library/Arduino15/packages/SparkFun/hardware/apollo3/2.1.1/variants/LoRa_THING_PLUS_expLoRaBLE/mbed/.cxx-symbols -I/Users/anathoo/Library/Arduino15/packages/SparkFun/hardware/apollo3/2.1.1/cores/arduino -I/Users/anathoo/Library/Arduino15/packages/SparkFun/hardware/apollo3/2.1.1/variants/LoRa_THING_PLUS_expLoRaBLE -I/Users/anathoo/Documents/Arduino/libraries/ArduinoJson/src -I/Users/anathoo/Library/Arduino15/packages/SparkFun/hardware/apollo3/2.1.1/cores/arduino -I/Users/anathoo/Library/Arduino15/packages/SparkFun/hardware/apollo3/2.1.1/cores/arduino/mbed-bridge -I/Users/anathoo/Library/Arduino15/packages/SparkFun/hardware/apollo3/2.1.1/cores/arduino/mbed-bridge/core-api -I/Users/anathoo/Library/Arduino15/packages/SparkFun/hardware/apollo3/2.1.1/cores/arduino/mbed-bridge/core-api/api/deprecated @/Users/anathoo/Library/Arduino15/packages/SparkFun/hardware/apollo3/2.1.1/variants/LoRa_THING_PLUS_expLoRaBLE/mbed/.includes /var/folders/57/0h65vzcn5px_061yp_bmc31r0000gn/T/arduino_build_707631/sketch/StringExample.ino.cpp -o /var/folders/57/0h65vzcn5px_061yp_bmc31r0000gn/T/arduino_build_707631/sketch/StringExample.ino.cpp.o
In file included from /Users/anathoo/Library/Arduino15/packages/SparkFun/hardware/apollo3/2.1.1/cores/arduino/mbed-bridge/core-api/api/String.h:33,
                 from /Users/anathoo/Library/Arduino15/packages/SparkFun/hardware/apollo3/2.1.1/cores/arduino/mbed-bridge/core-api/api/Print.h:24,
                 from /Users/anathoo/Library/Arduino15/packages/SparkFun/hardware/apollo3/2.1.1/cores/arduino/mbed-bridge/core-api/api/Stream.h:25,
                 from /Users/anathoo/Library/Arduino15/packages/SparkFun/hardware/apollo3/2.1.1/cores/arduino/mbed-bridge/core-api/api/Client.h:22,
                 from /Users/anathoo/Library/Arduino15/packages/SparkFun/hardware/apollo3/2.1.1/cores/arduino/mbed-bridge/core-api/api/ArduinoAPI.h:29,
                 from /Users/anathoo/Library/Arduino15/packages/SparkFun/hardware/apollo3/2.1.1/cores/arduino/mbed-bridge/Arduino.h:17,
                 from /Users/anathoo/Library/Arduino15/packages/SparkFun/hardware/apollo3/2.1.1/cores/arduino/sdk/ArduinoSDK.h:9,
                 from <command-line>:
/Users/anathoo/Documents/Arduino/libraries/ArduinoJson/src/ArduinoJson/Polyfills/pgmspace_generic.hpp: In instantiation of 'typename ArduinoJson6180_91::enable_if<ArduinoJson6180_91::is_pointer<T>::value, T>::type ArduinoJson6180_91::pgm_read(const void*) [with T = const arduino::__FlashStringHelper*; typename ArduinoJson6180_91::enable_if<ArduinoJson6180_91::is_pointer<T>::value, T>::type = const arduino::__FlashStringHelper*]':
/Users/anathoo/Documents/Arduino/libraries/ArduinoJson/src/ArduinoJson/Deserialization/DeserializationError.hpp:100:12:   required from here
/Users/anathoo/Library/Arduino15/packages/SparkFun/hardware/apollo3/2.1.1/cores/arduino/mbed-bridge/core-api/api/deprecated-avr-comp/avr/pgmspace.h:106:29: error: 'const void*' is not a pointer-to-object type
 #define pgm_read_ptr(addr) (*(const void *)(addr))
                            ~^~~~~~~~~~~~~~~~~~~~~~
Using library ArduinoJson at version 6.18.0 in folder: /Users/anathoo/Documents/Arduino/libraries/ArduinoJson 
exit status 1
Error compiling for board LoRa Thing Plus expLoRaBLE.

[amirna2]

I have a workaround for this issue in pgmspace.h where the error is happening

//#define pgm_read_ptr(addr) (*(const void *)(addr))
#define pgm_read_ptr(addr) (*reinterpret_cast<const void* const *>(addr))

[Wenn0101]

Thanks for the report!

I will add this to my To-Do to look into this.

[Wenn0101]

Issue resolved when arduino api was updated to v1.2.0