ESP32 Timer Issue

[yousif20121]

The code can't be uploaded on ESP32 (NodeMCU & DOIT KIT V1).

`c:\Users\Kio Store\Documents\Arduino\libraries\IBusBM\src\IBusBM.cpp: In member function 'void IBusBM::begin(HardwareSerial&, int8_t, int8_t, int8_t)': c:\Users\Kio Store\Documents\Arduino\libraries\IBusBM\src\IBusBM.cpp:116:27: error: too many arguments to function 'hw_timer_t timerBegin(uint32_t)' 116 | timer = timerBegin(timerid, F_CPU / 1000000L, true); // defaults to timer_id = 0; divider=80 (1 ms); countUp = true; | ~~^~~~~~~~~ In file included from C:\Users\Kio Store\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.0.1\cores\esp32/esp32-hal.h:84, from C:\Users\Kio Store\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.0.1\cores\esp32/Arduino.h:36, from c:\Users\Kio Store\Documents\Arduino\libraries\IBusBM\src\IBusBM.cpp:25: C:\Users\Kio Store\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.0.1\cores\esp32/esp32-hal-timer.h:35:13: note: declared here 35 | hw_timer_t timerBegin(uint32_t frequency); | ^~~~~~ c:\Users\Kio Store\Documents\Arduino\libraries\IBusBM\src\IBusBM.cpp:117:29: error: too many arguments to function 'void timerAttachInterrupt(hw_timer_t, void ()())' 117 | timerAttachInterrupt(timer, &onTimer, true); // edge = true | ~~~~^~~~~~~ C:\Users\Kio Store\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.0.1\cores\esp32/esp32-hal-timer.h:50:6: note: declared here 50 | void timerAttachInterrupt(hw_timer_t timer, void (userFunc)(void)); | ^~~~~~~~ c:\Users\Kio Store\Documents\Arduino\libraries\IBusBM\src\IBusBM.cpp:118:9: error: 'timerAlarmWrite' was not declared in this scope; did you mean 'timerWrite'? 118 | timerAlarmWrite(timer, 1000, true); //1 ms | ^~~~~~~ | timerWrite c:\Users\Kio Store\Documents\Arduino\libraries\IBusBM\src\IBusBM.cpp:119:9: error: 'timerAlarmEnable' was not declared in this scope; did you mean 'timerAlarm'? 119 | timerAlarmEnable(timer); | ^~~~ | timerAlarm

Using library IBusBM at version 1.1.4 in folder: C:\Users\Kio Store\Documents\Arduino\libraries\IBusBM exit status 1

Compilation error: exit status 1`

[fanfanlatulipe26]

Which platform? 

Which source / example ? 

Did you try with a previous release for ESP32 ?

 It seems you use 3.0.1

Have a try with 2.0.14

[yousif20121]

Platform: Arduino IDE 2.1.1

Example: Various examples still the same result (also tried the examples in the repo)

Unfortunately in my country there's no other versions of ESP32 available.

So is there a solution for this problem?

[fanfanlatulipe26]

I am speaking about the software release of the ESP32 environment for Arduino. Please, try to install a previous release such as 2.0.14

[fanfanlatulipe26]

The problem is with the "new" release of Arduino ESP32 core 3.0.1 that you are using.

Please have a look at https://docs.espressif.com/projects/arduino-esp32/en/latest/migration_guides/2.x_to_3.0.html

In the timer section it is clearly stated that some API have changed or even been removed. Don't ask me why !!

So I hink that the best for you is to stay with a relese 2 of the ESP32 core.

As it is the IBusBM library for ESP32 board  is not compatible with ESP core 3.x.y 

Or you can try to not use a timer  (IBUSBM_NOTIMER  and a call to  loop())

Too bad that so much incompatibilities were introduced .

[yousif20121]

Already tried the IBUSBM_NOTIMER & loop() method but it also didn't work.

After checking they certainly changed some APIs which led to this incompatibility.

The downgrade of ESP32 core worked fine. I installed 2.0.14 and it uploaded normally without errors.

Thank you so much for your help.

[fanfanlatulipe26]

Fine. But be carefull when using the timer option with ESP32. See my issues #40 and #39 The IBUSBM_NOTIMER should work