Janosch
57 lines
1.6 KiB
C++
57 lines
1.6 KiB
C++
/*
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* This file is part of the stm32-car project.
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*
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* Copyright (C) 2021 Johannes Huebner <dev@johanneshuebner.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef LINBUS_H
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#define LINBUS_H
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class LinBus
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{
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public:
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/** Default constructor */
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LinBus(uint32_t usart, int baudrate);
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void Request(uint8_t id, uint8_t* data, uint8_t len);
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bool HasReceived(uint8_t pid, uint8_t requiredLen);
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uint8_t* GetReceivedBytes() { return &recvBuffer[payloadIndex]; }
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protected:
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private:
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struct HwInfo
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{
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uint32_t usart;
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uint8_t dmatx;
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uint8_t dmarx;
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uint32_t port;
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uint16_t pin;
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};
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static uint8_t Checksum(uint8_t pid, uint8_t* data, int len);
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static uint8_t Parity(uint8_t id);
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static const HwInfo hwInfo[];
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static const int payloadIndex = 3;
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static const int pidIndex = 2;
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uint32_t usart;
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const HwInfo* hw;
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uint8_t sendBuffer[11];
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uint8_t recvBuffer[12];
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};
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#endif // LINBUS_H
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