| /** |
| * Copyright © 2020 IBM Corporation |
| * |
| * 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. |
| */ |
| |
| #include "i2c_compare_bytes_action.hpp" |
| |
| #include "action_error.hpp" |
| #include "i2c_interface.hpp" |
| |
| #include <exception> |
| #include <ios> |
| #include <sstream> |
| |
| namespace phosphor::power::regulators |
| { |
| |
| bool I2CCompareBytesAction::execute(ActionEnvironment& environment) |
| { |
| bool isEqual{true}; |
| try |
| { |
| // Read actual device register values. Use I2C mode where the number of |
| // bytes to read is explicitly specified. |
| i2c::I2CInterface& interface = getI2CInterface(environment); |
| uint8_t size = values.size(); |
| uint8_t actualValues[UINT8_MAX]; |
| interface.read(reg, size, actualValues, i2c::I2CInterface::Mode::I2C); |
| |
| // Compare actual byte values to expected byte values |
| for (unsigned int i = 0; i < values.size(); ++i) |
| { |
| if ((actualValues[i] & masks[i]) != values[i]) |
| { |
| isEqual = false; |
| break; |
| } |
| } |
| } |
| catch (const i2c::I2CException& e) |
| { |
| // Nest I2CException within an ActionError so caller will have both the |
| // low level I2C error information and the action information |
| std::throw_with_nested(ActionError(*this)); |
| } |
| return isEqual; |
| } |
| |
| std::string I2CCompareBytesAction::toString() const |
| { |
| std::ostringstream ss; |
| ss << "i2c_compare_bytes: { register: 0x" << std::hex << std::uppercase |
| << static_cast<uint16_t>(reg) << ", values: [ "; |
| for (unsigned int i = 0; i < values.size(); ++i) |
| { |
| ss << ((i > 0) ? ", " : "") << "0x" << static_cast<uint16_t>(values[i]); |
| } |
| ss << " ], masks: [ "; |
| for (unsigned int i = 0; i < masks.size(); ++i) |
| { |
| ss << ((i > 0) ? ", " : "") << "0x" << static_cast<uint16_t>(masks[i]); |
| } |
| ss << " ] }"; |
| return ss.str(); |
| } |
| |
| } // namespace phosphor::power::regulators |