01c8cae0dc
Added method to change the ledc PWM frequence programmatically Returning frequency from ledcChangeFrequency
46 lines
1.5 KiB
C
46 lines
1.5 KiB
C
// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
#ifndef _ESP32_HAL_LEDC_H_
|
|
#define _ESP32_HAL_LEDC_H_
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
#include <stdint.h>
|
|
#include <stdbool.h>
|
|
|
|
typedef enum {
|
|
NOTE_C, NOTE_Cs, NOTE_D, NOTE_Eb, NOTE_E, NOTE_F, NOTE_Fs, NOTE_G, NOTE_Gs, NOTE_A, NOTE_Bb, NOTE_B, NOTE_MAX
|
|
} note_t;
|
|
|
|
//channel 0-15 resolution 1-16bits freq limits depend on resolution
|
|
double ledcSetup(uint8_t channel, double freq, uint8_t resolution_bits);
|
|
void ledcWrite(uint8_t channel, uint32_t duty);
|
|
double ledcWriteTone(uint8_t channel, double freq);
|
|
double ledcWriteNote(uint8_t channel, note_t note, uint8_t octave);
|
|
uint32_t ledcRead(uint8_t channel);
|
|
double ledcReadFreq(uint8_t channel);
|
|
void ledcAttachPin(uint8_t pin, uint8_t channel);
|
|
void ledcDetachPin(uint8_t pin);
|
|
double ledcChangeFrequency(uint8_t channel, double freq, uint8_t resolution_bits);
|
|
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* _ESP32_HAL_LEDC_H_ */
|