ledc_set_duty_and_update() function

A thread-safe API to set duty for LEDC channel and return when duty updated.

Syntax

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Summary

Declaration

Definition

from ledc.h:542

esp_err_t ledc_set_duty_and_update(ledc_mode_t speed_mode, ledc_channel_t channel, uint32_t duty, uint32_t hpoint);

Implemented in ledc.c:1570

Arguments

Argument

Description

speed_mode

Select the LEDC channel group with specified speed mode. Note that not all targets support high speed mode.

channel

LEDC channel (0 - LEDC_CHANNEL_MAX-1), select from ledc_channel_t

duty

Set the LEDC duty, the range of duty setting is [0, (2**duty_resolution)]

hpoint

Set the LEDC hpoint value, the range is [0, (2**duty_resolution)-1]

Return value

- ESP_OK Success - ESP_ERR_INVALID_STATE Channel not initialized - ESP_ERR_INVALID_ARG Parameter error - ESP_FAIL Fade function init error

Notes

For ESP32, hardware does not support any duty change while a fade operation is running in progress on that channel. Other duty operations will have to wait until the fade operation has finished.

Examples

References

from examples

ledc_set_duty_and_update() function

Syntax

Arguments

Return value

Notes

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