device.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 "pw_bytes/span.h"
#include "pw_chrono/system_clock.h"
#include "pw_i2c/address.h"
#include "pw_i2c/initiator.h"
#include "pw_status/status.h"
 
namespace pw {
namespace i2c {
 
 
class Device {
 public:
  constexpr Device(Initiator& initiator, Address device_address)
      : initiator_(initiator), device_address_(device_address) {}
 
  Device(const Device&) = delete;
  Device(Device&&) = default;
  ~Device() = default;
 
  Status TransferFor(span<const Message> messages,
                     chrono::SystemClock::duration timeout) {
    return initiator_.TransferFor(messages, timeout);
  }
 
  Status WriteReadFor(ConstByteSpan tx_buffer,
                      ByteSpan rx_buffer,
                      chrono::SystemClock::duration timeout) {
    return initiator_.WriteReadFor(
        device_address_, tx_buffer, rx_buffer, timeout);
  }
 
  Status WriteReadFor(const void* tx_buffer,
                      size_t tx_size_bytes,
                      void* rx_buffer,
                      size_t rx_size_bytes,
                      chrono::SystemClock::duration timeout) {
    return initiator_.WriteReadFor(device_address_,
                                   tx_buffer,
                                   tx_size_bytes,
                                   rx_buffer,
                                   rx_size_bytes,
                                   timeout);
  }
 
  Status WriteFor(ConstByteSpan tx_buffer,
                  chrono::SystemClock::duration timeout) {
    return initiator_.WriteFor(device_address_, tx_buffer, timeout);
  }
  Status WriteFor(const void* tx_buffer,
                  size_t tx_size_bytes,
                  chrono::SystemClock::duration timeout) {
    return initiator_.WriteFor(
        device_address_, tx_buffer, tx_size_bytes, timeout);
  }
 
  Status ReadFor(ByteSpan rx_buffer, chrono::SystemClock::duration timeout) {
    return initiator_.ReadFor(device_address_, rx_buffer, timeout);
  }
  Status ReadFor(void* rx_buffer,
                 size_t rx_size_bytes,
                 chrono::SystemClock::duration timeout) {
    return initiator_.ReadFor(
        device_address_, rx_buffer, rx_size_bytes, timeout);
  }
 
  Status ProbeFor(chrono::SystemClock::duration timeout) {
    return initiator_.ProbeDeviceFor(device_address_, timeout);
  }
 
  void UpdateAddress(Address address) { device_address_ = address; }
 
 private:
  Initiator& initiator_;
  Address device_address_;
};
 
}  // namespace i2c
}  // namespace pw