i2c.hpp

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 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
  *  _____.___.                 .___                    .__.__      *
  *  \__  |   | ____   ____   __| _/___________    _____|__|  |     *
  *   /   |   |/ ___\ / ___\ / __ |\_  __ \__  \  /  ___/  |  |     *
  *   \____   / /_/  > /_/  > /_/ | |  | \// __ \_\___ \|  |  |__   *
  *   / ______\___  /\___  /\____ | |__|  (____  /____  >__|____/   *
  *   \/     /_____//_____/      \/            \/     \/            *
  *                          - Common -                             *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
  * This software can be used by students and other personal of the *
  * Bern University of Applied Sciences under the terms of the MIT  *
  * license.                                                        *
  * For other persons this software is under the terms of the GNU   *
  * General Public License version 2.                               *
  *                                                                 *
  * Copyright © 2021, Bern University of Applied Sciences.     *
  * All rights reserved.                                            *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
#pragma once
 
#include <cpp/common/registers.hpp>
#include <cpp/common/attributes.hpp>
#include <cpp/common/utils.hpp>
 
#include <array>
 
namespace bsp::drv {
 
    template<auto Context, template<auto> typename I2CImpl>
    struct I2C {
        I2C() = delete;
 
        using Impl = I2CImpl<Context>;
 
        static auto init(auto ... args) {
            return Impl::init(args...);
        }
 
        static auto deinit(auto ... args) {
            return Impl::deinit(args...);
        }
 
        template<typename T>
        static T read(u8 address) {
            std::array<u8, sizeof(T)> data;
            Impl::read(address, data);
 
            return bit_cast<T>(data);
        }
 
        template<typename T>
        static T read(u8 address, u8 reg) {
            std::array<u8, sizeof(T)> data;
            Impl::write(address, std::array<u8, 1>{ reg });
            Impl::read(address, data);
 
            return bit_cast<T>(data);
        }
 
        template<typename T>
        static void write(u8 address, T value) {
            std::array<u8, sizeof(T)> data;
            std::memcpy(data.data(), &value, sizeof(T));
 
            Impl::write(address, data);
        }
 
        template<typename T>
        static void write(u8 address, u8 reg, T value) {
            std::array<u8, sizeof(T) + 1> data;
            data[0] = reg;
            std::memcpy(data.data() + 1, &value, sizeof(T));
 
            Impl::write(address, data);
        }
    };
}