97 lines
3.1 KiB
C++
97 lines
3.1 KiB
C++
/*
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* PackagerAD5421.h
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*
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* Created on: 7 авг. 2019 г.
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* Author: user
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*/
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#ifndef SOURCE_DRIVER_CHIPSET_PACKAGERAD5421_H_
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#define SOURCE_DRIVER_CHIPSET_PACKAGERAD5421_H_
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#include <cstddef>
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#include "../../common/Crc.hpp"
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namespace driver { namespace chipset {
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struct PackagerAD5421 {
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typedef uint16_t Data; //!<Тип данных используемых пользователем для хранения полезной информации.
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typedef uint32_t Frame; //!<Тип данных отправляемый и получаемый по линии связи.
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static const std::size_t FrameSize; //!<Фиксированный размер кадра передаваемого по линии связи.
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typedef uint16_t RegAddress; //!<Тип адреса регистра в устройстве.
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typedef common::crc::Crc8_PRIME CrcType;
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static Frame encode( RegAddress rg_address, Data data, bool write_nread );
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static Data decode( Frame frame );
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struct Packager {
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typedef PackagerAD5421::Frame Frame;
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typedef PackagerAD5421::Data Data;
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RegAddress rg_address;
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bool write_nread;
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Frame pack( Data ) const;
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Data unpack( Frame ) const;
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};
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private:
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static const uint16_t READ_OP_CODE = 0x01;
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static const uint16_t WRITE_OP_CODE = 0x00;
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//!Структура адресного заголовка фрейма.
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struct AddressingRegisterForm {
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uint16_t REGISTER_ADDRESS : 7;
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uint16_t READ_WRITE_OP : 1;
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AddressingRegisterForm(uint16_t reg_addr, bool write_nread) :
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REGISTER_ADDRESS(reg_addr),
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READ_WRITE_OP(write_nread ? WRITE_OP_CODE : READ_OP_CODE) {}
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};
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//!Структура компановки адресного заголовка и СЛОВА данных.
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struct RegisterAddressAndData {
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AddressingRegisterForm address;
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Data data;
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operator Frame() const {
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uint32_t frame = ( static_cast<uint32_t>( *reinterpret_cast<const uint16_t*>( &address ) ) << 24ul ) | ( static_cast<uint32_t>( data ) << 8 );
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uint32_t frame_to_crc_check =
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( (frame << 8) & 0xFF0000 ) | ( (frame << 24) & 0xFF000000 ) | ( (frame >> 8) & 0xFF00 ) | ( (frame >> 24) & 0xFF );
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uint32_t crc = common::crc::crcCalc<CrcType>( reinterpret_cast<char*>( &frame_to_crc_check ), 3 );
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frame |= crc;
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return ((frame >> 16) & 0xFFFF) | frame << 16;
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}
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RegisterAddressAndData(uint16_t reg_addr, bool write_nread, Data data) :
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address(reg_addr, write_nread),
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data(data) {}
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};
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};
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inline driver::chipset::PackagerAD5421::Packager::Frame driver::chipset::PackagerAD5421::Packager::pack(
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Data data ) const {
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return encode( rg_address, data, write_nread );
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}
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inline driver::chipset::PackagerAD5421::Packager::Data driver::chipset::PackagerAD5421::Packager::unpack(
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Frame frame ) const {
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return decode( frame );
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}
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} /* namespace chipset */
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} /* namespace driver */
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#endif /* SOURCE_DRIVER_CHIPSET_PACKAGERAD5421_H_ */
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