pint.h

// Copyright 2023 The Pigweed Authors
//
// 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
//
//     https://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 "fsl_pint.h"
#include "pw_digital_io/digital_io.h"
#include "pw_status/status.h"
#include "pw_sync/borrow.h"
 
namespace pw::digital_io {
 
class McuxpressoPintController {
 public:
  McuxpressoPintController(PINT_Type* base);
  ~McuxpressoPintController();
 
  McuxpressoPintController(const McuxpressoPintController&) = delete;
  McuxpressoPintController& operator=(const McuxpressoPintController&) = delete;
 
 private:
  friend class McuxpressoPintInterrupt;
 
  pw::Status Config(pint_pin_int_t pin,
                    pw::digital_io::InterruptTrigger trigger,
                    pw::digital_io::InterruptHandler&& handler);
  pw::Status EnableHandler(pint_pin_int_t pin, bool enable);
 
  PINT_Type* base_;
};
 
class McuxpressoPintInterrupt : public pw::digital_io::DigitalInterrupt {
 public:
  McuxpressoPintInterrupt(
      pw::sync::Borrowable<McuxpressoPintController>& controller,
      pint_pin_int_t pin);
 
  McuxpressoPintInterrupt(const McuxpressoPintInterrupt&) = delete;
  McuxpressoPintInterrupt& operator=(const McuxpressoPintInterrupt&) = delete;
 
 private:
  // pw::digital_io::DigitalInterrupt implementation
  pw::Status DoEnable(bool enable) override;
  pw::Status DoSetInterruptHandler(
      pw::digital_io::InterruptTrigger trigger,
      pw::digital_io::InterruptHandler&& handler) override;
  pw::Status DoEnableInterruptHandler(bool enable) override;
 
  pw::sync::Borrowable<McuxpressoPintController>& controller_;
  pint_pin_int_t pin_;
};
 
}  // namespace pw::digital_io