spi.hpp

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  * 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.                               *
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  * Copyright © 2021, Bern University of Applied Sciences.     *
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#pragma once
 
#include <cpp/common/registers.hpp>
#include <cpp/common/attributes.hpp>
#include <cpp/common/utils.hpp>
 
#include <array>
#include <type_traits>
 
namespace bsp::drv {
 
    enum class SPIMode:u8 {
        _0 = 0b00,      
        _1 = 0b01,      
        _2 = 0b10,      
        _3 = 0b11,      
    };
 
    template<auto Context, template<auto> typename SPIImpl>
    struct SPI {
        SPI() = delete;
 
        using Impl = SPIImpl<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() {
            std::array<u8, sizeof(T)> data;
            Impl::read(data);
 
            return bit_cast<T>(data);
        }
 
        template<typename T>
        static void write(const T &value) {
            if constexpr (std::is_pointer<T>::value) {
                constexpr size_t Size = sizeof(std::remove_pointer<T>);
 
                std::array<u8, Size> data;
                std::memcpy(data.data(), value, Size);
                Impl::write(data);
            } else {
                constexpr size_t Size = sizeof(T);
 
                std::array<u8, Size> data;
                std::memcpy(data.data(), &value, Size);
                Impl::write(data);
            }
 
        }
 
        static void setMode(SPIMode mode) {
            Impl::setMode(mode);
        }
    };
}