Hi.
Update your ESP32 boards to version 3.
Go to Tools > Boards > Boards Manager > Search for ESP32, and update to version 3.
Regards,
Sara

C:\Users\intel\Downloads\xe_tranh_vat_can_Arduino\xe_tranh_vat_can_Arduino.ino: In function ‘void setup()’:
C:\Users\intel\Downloads\xe_tranh_vat_can_Arduino\xe_tranh_vat_can_Arduino.ino:17:3: error: ‘ledcAttach’ was not declared in this scope
ledcAttach(ledPin, freq, resolution);
^~~~~~~~~~
C:\Users\intel\Downloads\xe_tranh_vat_can_Arduino\xe_tranh_vat_can_Arduino.ino:17:3: note: suggested alternative: ‘ledcAttachPin’
ledcAttach(ledPin, freq, resolution);
^~~~~~~~~~
ledcAttachPin
exit status 1

Compilation error: ‘ledcAttach’ was not declared in this scope

That’s great.
I’m glad it’s working now.
Regards,
Sara

Hi.
It seems you already have the latest version.
Uninstall the Arduino ESP32 Boards 2.0.18 and the one by Ricardo Quesada. You only need the one by expressif.
Additionally, make sure that you have an ESP32 board selected in Tools > Board when trying to compile an ESP32 code.

Regards,
Sara

Hi.
Please update your ESP32 boards installation to version 3.
The PWM methods have changed. You must still be running ESP32 version 2.
Let me know if you can solve the issue.
Regards,
Sara

Thanks for this code works fine in my ESP 32 Dev Module. However I tried using the code in an RGB using “ledcAttachChannel(ledPin, freq, resolution, 0);” controlled by a PS3 controller. However compiler does’nt agree with it, getting an error message below,

C:\Users\Admin\Documents\Arduino\sketch_nov23b_PS3Controller_RGB\sketch_nov23b_PS3Controller_RGB.ino: In function ‘void setup()’:
C:\Users\Admin\Documents\Arduino\sketch_nov23b_PS3Controller_RGB\sketch_nov23b_PS3Controller_RGB.ino:98:20: error: too few arguments to function ‘bool ledcAttachChannel(uint8_t, uint32_t, uint8_t, uint8_t)’
98 | ledcAttachChannel(redChannel, ledFreq, ledResolution);
| ~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from C:\Users\Admin\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.0.7\cores\esp32/esp32-hal.h:81,
from C:\Users\Admin\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.0.7\cores\esp32/Arduino.h:36,
from C:\Users\Admin\AppData\Local\Temp\arduino\sketches\8477042612A4719C5780DF660271FDF4\sketch\sketch_nov23b_PS3Controller_RGB.ino.cpp:1:
C:\Users\Admin\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.0.7\cores\esp32/esp32-hal-ledc.h:99:6: note: declared here
99 | bool ledcAttachChannel(uint8_t pin, uint32_t freq, uint8_t resolution, uint8_t channel);
| ^~~~~~~~~~~~~~~~~
C:\Users\Admin\Documents\Arduino\sketch_nov23b_PS3Controller_RGB\sketch_nov23b_PS3Controller_RGB.ino:99:20: error: too few arguments to function ‘bool ledcAttachChannel(uint8_t, uint32_t, uint8_t, uint8_t)’
99 | ledcAttachChannel(greenChannel, ledFreq, ledResolution);
| ~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
C:\Users\Admin\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.0.7\cores\esp32/esp32-hal-ledc.h:99:6: note: declared here
99 | bool ledcAttachChannel(uint8_t pin, uint32_t freq, uint8_t resolution, uint8_t channel);
| ^~~~~~~~~~~~~~~~~
C:\Users\Admin\Documents\Arduino\sketch_nov23b_PS3Controller_RGB\sketch_nov23b_PS3Controller_RGB.ino:100:20: error: too few arguments to function ‘bool ledcAttachChannel(uint8_t, uint32_t, uint8_t, uint8_t)’
100 | ledcAttachChannel(blueChannel, ledFreq, ledResolution);
| ~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
C:\Users\Admin\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.0.7\cores\esp32/esp32-hal-ledc.h:99:6: note: declared here
99 | bool ledcAttachChannel(uint8_t pin, uint32_t freq, uint8_t resolution, uint8_t channel);
| ^~~~~~~~~~~~~~~~~
C:\Users\Admin\Documents\Arduino\sketch_nov23b_PS3Controller_RGB\sketch_nov23b_PS3Controller_RGB.ino:104:3: error: ‘ledcAttachpin’ was not declared in this scope; did you mean ‘ledcAttach’?
104 | ledcAttachpin(ledRed, redChannel);
| ^~~~~~~~~~~~~
| ledcAttach

exit status 1

Compilation error: too few arguments to function ‘bool ledcAttachChannel(uint8_t, uint32_t, uint8_t, uint8_t)’

I’m just learning these ESP32 because I have a project using a PS3 controller via bluetooth to control an RC car. Currently I’m just using PS3 controller to turn on/off led lights and its working. However I’m still trying to find out how I can get a code to control an rc car using PS3 controller and ESP32.
I have been successfull using a phone app and a web page controlling an rc car.
However incorporating a PS3 controller and ESP32 to control an RC car(using L298N motor driver for the dc motor wheels) is tough currently.
I hope you can help me.
Thanks
Rick