| // Copyright 2023 The ChromiumOS Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "libec/i2c_read_command.h" |
| |
| #include <vector> |
| |
| #include <base/containers/span.h> |
| #include <base/notreached.h> |
| |
| namespace ec { |
| |
| uint32_t I2cReadCommand::Data() const { |
| CHECK(RespData().size() == read_len_) |
| << "Unexpected response size. Expected " << read_len_ << ", got" |
| << RespData().size() << "."; |
| if (read_len_ == 1) { |
| return RespData()[0]; |
| } |
| if (read_len_ == 2 || read_len_ == 4) { |
| // Copy data out of place to align memory addresses. |
| base::span<const uint8_t> raw_data = RespData(); |
| std::vector<uint8_t> aligned_data(raw_data.begin(), raw_data.end()); |
| if (read_len_ == 2) { |
| return *reinterpret_cast<const uint16_t*>(aligned_data.data()); |
| } |
| if (read_len_ == 4) { |
| return *reinterpret_cast<const uint32_t*>(aligned_data.data()); |
| } |
| } |
| NOTREACHED(); |
| return 0; |
| } |
| |
| } // namespace ec |
