Compilation error

[11qu1d]

Hi,

First of all thank you for putting this project together.

I thought i would give it a go with my old Airgradient, but i stumbled upon an error while compiling the project:

Linking .pio\build\d1_mini_lite\firmware.elf
c:/users/usr/.platformio/packages/toolchain-xtensa/bin/../lib/gcc/xtensa-lx106-elf/10.3.0/../../../../xtensa-lx106-elf/bin/ld.exe: .pio\build\d1_mini_lite\src\main.cpp.o:(.data.CUSTOM_DEVICE_ID+0x0): multiple definition of `CUSTOM_DEVICE_ID'; .pio\build\d1_mini_lite\src\display.cpp.o:(.data.CUSTOM_DEVICE_ID+0x0): first defined here
c:/users/usr/.platformio/packages/toolchain-xtensa/bin/../lib/gcc/xtensa-lx106-elf/10.3.0/../../../../xtensa-lx106-elf/bin/ld.exe: .pio\build\d1_mini_lite\src\main.cpp.o:(.bss.DISPLAY_FAHRENHEIT+0x0): multiple definition of `DISPLAY_FAHRENHEIT'; .pio\build\d1_mini_lite\src\display.cpp.o:(.bss.DISPLAY_FAHRENHEIT+0x0): first defined here
c:/users/usr/.platformio/packages/toolchain-xtensa/bin/../lib/gcc/xtensa-lx106-elf/10.3.0/../../../../xtensa-lx106-elf/bin/ld.exe: .pio\build\d1_mini_lite\src\main.cpp.o:(.data.SSID+0x0): multiple definition of `SSID'; .pio\build\d1_mini_lite\src\display.cpp.o:(.data.SSID+0x0): first defined here
c:/users/usr/.platformio/packages/toolchain-xtensa/bin/../lib/gcc/xtensa-lx106-elf/10.3.0/../../../../xtensa-lx106-elf/bin/ld.exe: .pio\build\d1_mini_lite\src\main.cpp.o:(.data.SSID_PASSWORD+0x0): multiple definition of `SSID_PASSWORD'; .pio\build\d1_mini_lite\src\display.cpp.o:(.data.SSID_PASSWORD+0x0): first defined here
c:/users/usr/.platformio/packages/toolchain-xtensa/bin/../lib/gcc/xtensa-lx106-elf/10.3.0/../../../../xtensa-lx106-elf/bin/ld.exe: .pio\build\d1_mini_lite\src\main.cpp.o:(.data.MQTT_HOST+0x0): multiple definition of `MQTT_HOST'; .pio\build\d1_mini_lite\src\display.cpp.o:(.data.MQTT_HOST+0x0): first defined here
c:/users/usr/.platformio/packages/toolchain-xtensa/bin/../lib/gcc/xtensa-lx106-elf/10.3.0/../../../../xtensa-lx106-elf/bin/ld.exe: .pio\build\d1_mini_lite\src\main.cpp.o:(.data.MQTT_USERNAME+0x0): multiple definition of `MQTT_USERNAME'; .pio\build\d1_mini_lite\src\display.cpp.o:(.data.MQTT_USERNAME+0x0): first defined here
c:/users/usr/.platformio/packages/toolchain-xtensa/bin/../lib/gcc/xtensa-lx106-elf/10.3.0/../../../../xtensa-lx106-elf/bin/ld.exe: .pio\build\d1_mini_lite\src\main.cpp.o:(.data.MQTT_PASSWORD+0x0): multiple definition of `MQTT_PASSWORD'; .pio\build\d1_mini_lite\src\display.cpp.o:(.data.MQTT_PASSWORD+0x0): first defined here
c:/users/usr/.platformio/packages/toolchain-xtensa/bin/../lib/gcc/xtensa-lx106-elf/10.3.0/../../../../xtensa-lx106-elf/bin/ld.exe: .pio\build\d1_mini_lite\src\main.cpp.o:(.data.HOASS_AUTO_DISCOVERY+0x0): multiple definition of `HOASS_AUTO_DISCOVERY'; .pio\build\d1_mini_lite\src\display.cpp.o:(.data.HOASS_AUTO_DISCOVERY+0x0): first defined here
collect2.exe: error: ld returned 1 exit status
*** [.pio\build\d1_mini_lite\firmware.elf] Error 1

I have tried this in both Mac and PC, still the same error. Quick google didn't provide any answers, plus i am not an expert with C++...

P.S.: One thing that i had to do before i could compile, was to bump the version of robtillaart/SGP30 to the latest as the one referenced doesn't seem to any more. Not sure if its related to the above.

Thanks!