136 lines
2.8 KiB
C++
136 lines
2.8 KiB
C++
#include "b15f.h"
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B15F* B15F::instance = nullptr;
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B15F::B15F()
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{
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}
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void B15F::init(void)
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{
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std::cout << PRE << "Stelle Verbindung mit Adapter her... ";
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int code = system(std::string("stty 38400 -F " + SERIAL_DEVICE).c_str());
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if(code)
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{
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throw DriverException("Konnte serielle Verbindung nicht initialisieren. Ist der Adapter angeschlossen?");
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}
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usart = open(SERIAL_DEVICE.c_str(), O_RDWR | O_NOCTTY | O_NDELAY);
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struct termios options;
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tcgetattr(usart, &options);
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options.c_cflag = baudrate | CS8 | CLOCAL | CREAD;
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options.c_iflag = IGNPAR;
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options.c_oflag = 0;
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options.c_lflag = 0;
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options.c_cc[VTIME]=30;
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tcsetattr(usart, TCSANOW, &options);
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tcflush(usart, TCIFLUSH);
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std::cout << "OK" << std::endl;
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// Verbindungstest muss dreimal erfolgreich sein
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std::cout << PRE << "Teste Verbindung... ";
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for(uint8_t i = 0; i < 3; i++)
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{
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if(!testConnection())
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{
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throw DriverException("Verbindungstest fehlgeschlagen. Neueste Version im Einsatz?");
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}
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}
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std::cout << "OK" << std::endl;
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writeByte(0xFF);
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writeByte(0x01);
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writeByte(0x02);
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std::cout << readByte() << std::endl;
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std::cout << readByte() << std::endl;
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}
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bool B15F::testConnection(void)
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{
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// erzeuge zufälliges Byte
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srand (time(NULL));
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uint8_t dummy = rand() % 256;
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writeByte(0); // echo / dummy command for testing
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writeByte(dummy);
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uint8_t aw = readByte();
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uint8_t mirror = readByte();
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return aw == MSG_OK && mirror == dummy;
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}
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void B15F::writeByte(uint8_t b)
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{
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if(write(usart, &b, 1) != 1)
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throw DriverException("Fehler beim Senden.");
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}
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void B15F::writeInt(uint16_t v)
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{
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// static_cast<char*>(static_cast<void*>(&x));
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writeByte((v >> 8) & 0xFF);
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writeByte((v >> 0) & 0xFF);
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}
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void B15F::writeLong(uint32_t v)
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{
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writeByte((v >> 24) & 0xFF);
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writeByte((v >> 16) & 0xFF);
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writeByte((v >> 8) & 0xFF);
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writeByte((v >> 0) & 0xFF);
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}
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uint8_t B15F::readByte()
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{
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char b;
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auto start = std::chrono::steady_clock::now();
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auto end = start;
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uint16_t elapsed = 0;
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while(elapsed < timeout)
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{
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int n = read(usart, &b, 1);
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if (n > 0)
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return static_cast<uint8_t>(b);
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/*else if(n < -1)
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{
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std::string msg = "Fehler bei der seriellen Verbindung. (Code: ";
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msg += std::to_string(n);
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msg += ")";
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throw DriverException(msg);
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}*/
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end = std::chrono::steady_clock::now();
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elapsed = std::chrono::duration_cast<std::chrono::milliseconds>(end - start).count();
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}
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if(elapsed >= timeout)
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throw DriverException("Verbindung unterbrochen. (timeout)");
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}
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uint16_t B15F::readInt()
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{
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return readByte() << 8 | readByte();
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}
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uint32_t B15F::readLong()
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{
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return readByte() << 24 | readByte() << 16 | readByte() << 8 | readByte();
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}
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void B15F::sleep(uint16_t ms)
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{
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std::this_thread::sleep_for(std::chrono::milliseconds(ms));
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}
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B15F& B15F::getInstance(void)
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{
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if(!instance)
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instance = new B15F();
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return *instance;
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}
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