1 // Copyright 2023 The Pigweed Authors 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); you may not 4 // use this file except in compliance with the License. You may obtain a copy of 5 // the License at 6 // 7 // https://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 11 // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 12 // License for the specific language governing permissions and limitations under 13 // the License. 14 15 #pragma once 16 17 #include <cstdint> 18 19 #include "pw_digital_io/digital_io.h" 20 #include "pw_digital_io/polarity.h" 21 22 namespace pw::digital_io { 23 24 struct Rp2040Config { 25 uint16_t pin; 26 Polarity polarity; 27 bool enable_pull_up = false; 28 bool enable_pull_down = false; 29 30 bool operator==(const Rp2040Config& rhs) const { 31 return polarity == rhs.polarity && pin == rhs.pin; 32 } PhysicalToLogicalRp2040Config33 State PhysicalToLogical(const bool hal_value) const { 34 return polarity == Polarity::kActiveHigh ? State(hal_value) 35 : State(!hal_value); 36 } LogicalToPhysicalRp2040Config37 bool LogicalToPhysical(const State state) const { 38 return polarity == Polarity::kActiveHigh ? (bool)state : !(bool)state; 39 } 40 }; 41 42 class Rp2040DigitalInOut : public DigitalInOut { 43 public: 44 Rp2040DigitalInOut(Rp2040Config config); 45 46 private: 47 Status DoEnable(bool enable) override; 48 Status DoSetState(State level) override; 49 Result<State> DoGetState() override; 50 51 Rp2040Config config_; 52 }; 53 54 class Rp2040DigitalIn : public DigitalIn { 55 public: 56 Rp2040DigitalIn(Rp2040Config config); 57 58 private: 59 Status DoEnable(bool enable) override; 60 Result<State> DoGetState() override; 61 62 Rp2040Config config_; 63 }; 64 65 } // namespace pw::digital_io 66