ledc_set_fade() function

LEDC set gradient Set LEDC gradient, After the function calls the ledc_update_duty function, the function can take effect.

Syntax

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Summary

Declaration

Definition

from ledc.h:331

esp_err_t ledc_set_fade(ledc_mode_t speed_mode, ledc_channel_t channel, uint32_t duty, ledc_duty_direction_t fade_direction, uint32_t step_num, uint32_t duty_cycle_num, uint32_t duty_scale);

Implemented in ledc.c:1004

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 start of the gradient duty, the range of duty setting is [0, (2**duty_resolution)]

fade_direction

Set the direction of the gradient

step_num

Set the number of the gradient

duty_cycle_num

Set how many LEDC tick each time the gradient lasts

duty_scale

Set gradient change amplitude

Return value

- ESP_OK Success - ESP_ERR_INVALID_ARG Parameter 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_fade() function

Syntax

Arguments

Return value

Notes

Examples

References

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