Problem compiling code for ESP32 Dev Module

maxgerhardt · July 26, 2024, 7:50pm

You’re getting tricked by the fact that PlatformIO in the standard espressif32 platform still uses Arduino-ESP32 2.0.16 as its Arduino core. (due to politics).

As you can see per

github.com

espressif/arduino-esp32/blob/2.0.16/cores/esp32/esp32-hal-timer.h#L33-L40


      
          hw_timer_t * timerBegin(uint8_t timer, uint16_t divider, bool countUp);
          void timerEnd(hw_timer_t *timer);
          
          void timerSetConfig(hw_timer_t *timer, uint32_t config);
          uint32_t timerGetConfig(hw_timer_t *timer);
          
          void timerAttachInterruptFlag(hw_timer_t *timer, void (*fn)(void), bool edge, int intr_alloc_flags);
          void timerAttachInterrupt(hw_timer_t *timer, void (*fn)(void), bool edge);

the function timerBegin takes 3 arguments in Arduino-ESP32 2.0.16, but, in Arudino-ESP32 3.0 you have

github.com

espressif/arduino-esp32/blob/7a82915de215ec0572e0d3e10fb44674056ec885/cores/esp32/esp32-hal-timer.h#L35-L50


      
          hw_timer_t *timerBegin(uint32_t frequency);
          void timerEnd(hw_timer_t *timer);
          
          void timerStart(hw_timer_t *timer);
          void timerStop(hw_timer_t *timer);
          void timerRestart(hw_timer_t *timer);
          void timerWrite(hw_timer_t *timer, uint64_t val);
          
          uint64_t timerRead(hw_timer_t *timer);
          uint64_t timerReadMicros(hw_timer_t *timer);
          uint64_t timerReadMilis(hw_timer_t *timer);
          double timerReadSeconds(hw_timer_t *timer);
          
          uint32_t timerGetFrequency(hw_timer_t *timer);
          
          void timerAttachInterrupt(hw_timer_t *timer, void (*userFunc)(void));

A changed API in which that function only uses one argument.

Thus, you can either rewrite the code to use the Arduino-ESP32 2.x API and keep platform unchanged, or, make PlatformIO use Arduino-ESP32 3.x by using unofficial platforms or packages. See