ledcAttach is undefined

[patrickwasp]

Board

ESP32S3

Device Description

Seeed Studio XIAO ESP32S3, attached to nothing

PLATFORM: Espressif 32 (2023.11.1) > Seeed Studio XIAO ESP32S3

Hardware Configuration

nothing connected

Version

other

IDE Name

PlatformIO

Operating System

Ubuntu

Flash frequency

40

PSRAM enabled

yes

Upload speed

115200

Description

'ledcAttachChannel' was not declared in this scope

https://espressif-docs.readthedocs-hosted.com/projects/arduino-esp32/en/latest/api/ledc.html

Sketch

void setup() {
  ledcAttach(LED_BUILTIN, 2000, 12);
}

void loop(){}

Debug Message

/tmp/arduino_modified_sketch_36424/ledcFrequency.ino: In function 'void setup()':
ledcFrequency:2:3: error: 'ledcAttach' was not declared in this scope
   ledcAttach(LED_BUILTIN, 2000, 12);
   ^~~~~~~~~~
/tmp/arduino_modified_sketch_36424/ledcFrequency.ino:2:3: note: suggested alternative: 'ledcAttachPin'
   ledcAttach(LED_BUILTIN, 2000, 12);
   ^~~~~~~~~~
   ledcAttachPin
exit status 1
'ledcAttach' was not declared in this scope

Other Steps to Reproduce

No response

I have checked existing issues, online documentation and the Troubleshooting Guide

• I confirm I have checked existing issues, online documentation and Troubleshooting guide.

[lbernstone]

The API has changed. ledcAttachPin was v2.x. ledcAttach is v3.0
The compiler is telling you the exactly correct answer.

[P-R-O-C-H-Y]

For more details please take a look on MIGRATION GUIDE FROM 2.X TO 3.X.

[ecoreng]

OP is saying ledcAttach and ledcAttachChannel "was not declared in this scope" which they should in 3+.

This is puzzling me too. I can't get platformio to make them available, even after clearing the platformio "cached" espressif-arduino stuff.

[ecoreng]

ok, If I had to guess it's because it's not stable:
https://github.com/espressif/arduino-esp32/releases

and thus, platformio hasn't released their platform with it:
https://github.com/platformio/platform-espressif32/releases

This is platformio's problem though, not espressif's

[nsmith1024]

Hello, was this fixed? it is still not defined.

[me-no-dev]

@nsmith1024 API has changed, this will never be "fixed" you need to use the new API