chip_selector.h

// Copyright 2021 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 <cstdint>
 
#include "pw_status/status.h"
 
namespace pw::spi {
 
enum class ChipSelectBehavior : uint8_t {
  kPerWriteRead,
  kPerTransaction,
};
 
class ChipSelector {
 public:
  virtual ~ChipSelector() = default;
 
  virtual Status SetActive(bool active) = 0;
 
  Status Activate() { return SetActive(true); }
 
  Status Deactivate() { return SetActive(false); }
};
 
}  // namespace pw::spi