esp32-hal-ledc.h

// 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>

typedefenum {
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
doubleledcSetup(uint8_tchannel, doublefreq, uint8_tresolution_bits);
voidledcWrite(uint8_tchannel, uint32_tduty);
doubleledcWriteTone(uint8_tchannel, doublefreq);
doubleledcWriteNote(uint8_tchannel, note_tnote, uint8_toctave);
uint32_tledcRead(uint8_tchannel);
doubleledcReadFreq(uint8_tchannel);
voidledcAttachPin(uint8_tpin, uint8_tchannel);
voidledcDetachPin(uint8_tpin);


#ifdef__cplusplus
}
#endif

#endif/* _ESP32_HAL_LEDC_H_ */