| /* |
| * Copyright (c) 2022 Project CHIP Authors |
| * All rights reserved. |
| * |
| * 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. |
| */ |
| |
| #pragma once |
| |
| #include <system/SystemError.h> |
| |
| #include <cstdint> |
| #include <zephyr/drivers/gpio.h> |
| #include <zephyr/drivers/pwm.h> |
| |
| class PWMDevice |
| { |
| public: |
| enum Action_t : uint8_t |
| { |
| ON_ACTION = 0, |
| OFF_ACTION, |
| LEVEL_ACTION, |
| COLOR_ACTION_XY, |
| COLOR_ACTION_HSV, |
| COLOR_ACTION_CT, |
| |
| INVALID_ACTION |
| }; |
| |
| enum State_t : uint8_t |
| { |
| kState_On = 0, |
| kState_Off, |
| }; |
| |
| enum BreatheType_t : uint8_t |
| { |
| kBreatheType_Invalid = 0, |
| kBreatheType_Rising, |
| kBreatheType_Falling, |
| kBreatheType_Both, |
| }; |
| |
| using PWMCallback_fn = void (*)(Action_t, int32_t); |
| using PWMTimerCallback_fn = void (*)(k_timer *); |
| |
| CHIP_ERROR Init(const pwm_dt_spec * pwmDevice, uint8_t aMinLevel, uint8_t aMaxLevel, uint8_t aDefaultLevel = 0); |
| void Set(bool aOn); |
| bool IsTurnedOn(void) const { return mState == kState_On; } |
| uint8_t GetLevel(void) const { return mLevel; } |
| uint8_t GetMinLevel(void) const { return mMinLevel; } |
| uint8_t GetMaxLevel(void) const { return mMaxLevel; } |
| void SetCallbacks(PWMCallback_fn aActionInitiated_CB, PWMCallback_fn aActionCompleted_CB, |
| PWMTimerCallback_fn aActionBlinkStateUpdate_CB); |
| bool InitiateAction(Action_t aAction, int32_t aActor, uint8_t * value); |
| void InitiateBlinkAction(uint32_t onTimeMS, uint32_t offTimeMS); |
| void InitiateBreatheAction(BreatheType_t type, uint32_t cycleTimeMS); |
| void StopAction(void); |
| void UpdateAction(void); |
| |
| private: |
| State_t mState; |
| uint8_t mMinLevel; |
| uint8_t mMaxLevel; |
| uint8_t mLevel; |
| uint8_t mBreatheStepLevel; |
| uint8_t mBreatheStepCntr; |
| bool mBreatheBothDirection; |
| BreatheType_t mBreatheType; |
| uint32_t mBreatheStepNumb; |
| uint32_t mBlinkOnTimeMS; |
| uint32_t mBlinkOffTimeMS; |
| k_timer mPwmLedTimer; |
| const pwm_dt_spec * mPwmDevice; |
| |
| PWMCallback_fn mActionInitiated_CB; |
| PWMCallback_fn mActionCompleted_CB; |
| |
| void SetLevel(uint8_t aLevel); |
| void UpdateLight(void); |
| void StartBlinkTimer(void); |
| void StartBreatheTimer(uint32_t stepTimeMS); |
| void ClearAction(void); |
| static void PwmLedTimerHandler(k_timer * timer); |
| }; |