[SOLVED] Can't use servo library with ESP8266 in PlatformIO, but it works in Arduino IDE

esverd · April 11, 2021, 7:09pm

When I include the regular Servo library by Michael Margolis in PlatformIO I get the following error message when I compile for Wemos D1: .pio\libdeps\d1\Servo\src/Servo.h:77:2: error: #error “This library only supports boards with an AVR, SAM, SAMD, NRF52 or STM32F4 processor.”

Okay, fair enough. Except the code compiles and runs perfectly on the ESP8266 when I use the Arduino IDE to upload code.
So the Servo library does work with the Wemos D1 Mini.

Do you have any idea on how to fix this? I have already spent hours pulling my hair.

I did read this similar issue, but I have no global libraries to remove.
I have also followed the suggestion in this topic to run the “Clean” project task and remove the .pio folder. The problem and error message still persists.

maxgerhardt · April 11, 2021, 7:17pm

That library does not support the ESP8266.

github.com

arduino-libraries/Servo/blob/006f6303a6842a61551e64d8777bf4ff41c1dbe6/src/Servo.h#L61-L78


      
          // Architecture specific include
          #if defined(ARDUINO_ARCH_AVR)
          #include "avr/ServoTimers.h"
          #elif defined(ARDUINO_ARCH_SAM)
          #include "sam/ServoTimers.h"
          #elif defined(ARDUINO_ARCH_SAMD)
          #include "samd/ServoTimers.h"
          #elif defined(ARDUINO_ARCH_STM32F4)
          #include "stm32f4/ServoTimers.h"
          #elif defined(ARDUINO_ARCH_NRF52)
          #include "nrf52/ServoTimers.h"
          #elif defined(ARDUINO_ARCH_MEGAAVR)
          #include "megaavr/ServoTimers.h"
          #elif defined(ARDUINO_ARCH_MBED)
          #include "mbed/ServoTimers.h"
          #else
          #error "This library only supports boards with an AVR, SAM, SAMD, NRF52 or STM32F4 processor."
          #endif

The Arduino-ESP8266 core already comes with its built-in servo library: Arduino/libraries/Servo at master · esp8266/Arduino · GitHub.

Remove the old Servo library from the lib_deps expression of the platformio.ini, remove the .pio folder and retry building.

Alternatively, try specifying

lib_deps = 
   Servo(esp8266)

directly for the built-in library.

esverd · April 11, 2021, 7:56pm

Thanks mate! That worked!

It was also interesting to take a look at the libraries included in the Arduino-ESP8266 core. I didn’t know they could be used without lib_deps expressions.