Permalink
Find file Copy path
a430528 Jan 9, 2017
1 contributor

Users who have contributed to this file

45 lines (35 sloc) 1.43 KB
// 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);
#ifdef __cplusplus
}
#endif
#endif /* _ESP32_HAL_LEDC_H_ */