`analogWriteResolution` not working

[vladtepesch]

PROBLEM DESCRIPTION

I try to setup a 10bit pwm with analogWriteResolution(LED_R, 10); but I get the following output:

[esp32-hal-ledc.c:793] analogWriteResolution(): analogWrite resolution cant be set due to selected frequency! Try to adjust frequency first

then I tried to explicitely set the frequency analogWriteFrequency(LED_R,1000);

then I get an additional message:

[esp32-hal-ledc.c:785] analogWriteFrequency(): analogWrite frequency cant be set due to selected resolution! Try to adjust resolution first

void setup() {
  ledcSetClockSource(LEDC_USE_APB_CLK);
  analogWriteFrequency(LED_R,1000);
  analogWriteResolution(LED_R, 10);
}

I really do not understand the problem. 10bit @ 1khz requires a timerfrequency of 1Mhz which should be achievable without problems.

my platormio.ini

[env:esp32]

platform =  https://github.com/pioarduino/platform-espressif32/releases/download/stable/platform-espressif32.zip
board = upesy_wroom
board_build.mcu = esp32

board_build.f_cpu = 240000000L

framework = arduino
monitor_speed = 115200
monitor_filters = esp32_exception_decoder
#build_type = debug
#upload_port = COM6
board_build.filesystem = littlefs

build_unflags = -std=gnu++11
                -std=c++11

build_flags =
    -std=c++17
    -std=gnu++17

TO REPRODUCE

see code above

EXPECTED BEHAVIOUR

correct pwm setup

SCREENSHOTS

n.a.

ADDITIONAL CONTEXT

I posted this Problem on SO

A sugestion was to set resolution and frequency by directly using ledcAttach. this works as expecteds - so we came to the conclusion that most probably this is a library bug.

(Please, remember to close the issue when the problem has been addressed)

[Jason2866]

not a pioarduino issue. It is an Arduino core question / issue. Please open a issue in espressif GitHub repo

[vladtepesch]

I am not sure that the correct target repo (I currently do not fully understand the graph that does depend on what and that is forked from what) is. can you forward the issue to the correct one and provide addtional necessary informations (like the version this repo is based on)? I will then try to follow up on this issue.

[Jason2866]

The correct repo for this is https://github.com/espressif/arduino-esp32

[TD-er]

Possible related issue
espressif/arduino-esp32#9336