kopia lustrzana https://github.com/pjalocha/esp32-ogn-tracker
98 wiersze
2.5 KiB
C++
98 wiersze
2.5 KiB
C++
#include <unistd.h>
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#include <stdint.h>
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#include <fcntl.h>
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#include <termios.h>
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#include <string.h>
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class SerialPort
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{ public:
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int DeviceHandle;
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public:
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SerialPort()
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{ DeviceHandle=(-1); }
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~SerialPort()
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{ Close(); }
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int isOpen(void) const { return DeviceHandle>=0; }
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int Open(const char *DeviceName="/dev/ttyS0", int BaudRate=9600)
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{ Close();
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DeviceHandle=open(DeviceName, O_RDWR | O_NOCTTY | O_NDELAY );
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if(DeviceHandle<0) return -1;
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int Speed; // speed_t Speed;
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if(BaudRate==4800) Speed=B4800;
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else if(BaudRate==9600) Speed=B9600;
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else if(BaudRate==19200) Speed=B19200;
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else if(BaudRate==38400) Speed=B38400;
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else if(BaudRate==57600) Speed=B57600;
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else if(BaudRate==115200) Speed=B115200;
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else if(BaudRate==230400) Speed=B230400;
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// else if(BaudRate==128000) Speed=B128000;
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// else if(BaudRate==256000) Speed=B256000;
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else return -2;
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struct termios Options;
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tcgetattr(DeviceHandle, &Options);
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if(cfsetispeed(&Options, Speed)<0) return -2;
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if(cfsetospeed(&Options, Speed)<0) return -2;
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// cfsetspeed(&Options, Speed);
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Options.c_cflag |= (CLOCAL | CREAD);
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Options.c_cflag &= ~PARENB; // 8-bits, no parity
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Options.c_cflag &= ~CSTOPB;
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Options.c_cflag &= ~CSIZE;
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Options.c_cflag |= CS8;
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Options.c_cc[VTIME] = 0;
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Options.c_cc[VMIN] = 1;
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tcsetattr(DeviceHandle, TCSANOW, &Options);
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/*
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int Bytes=sizeof(Options);
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uint8_t *Ptr = (uint8_t *)(&Options);
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printf("Options[%d] =", Bytes);
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for( ; Bytes; Bytes--, Ptr++)
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{ printf(" %02X", *Ptr); }
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printf("\n");
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*/
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return 0; }
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int OpenFileForRead(const char *FileName)
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{ Close();
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DeviceHandle=open(FileName, O_RDONLY);
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if(DeviceHandle<0) return -1;
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return 0; }
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int Close(void)
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{ if(DeviceHandle>=0)
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{ close(DeviceHandle); DeviceHandle=(-1); }
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return 0; }
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int Read(char *Buffer, size_t MaxChars)
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{ int Len=read(DeviceHandle, Buffer, MaxChars);
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return Len<=0 ? 0:Len; }
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int Read(char &Char)
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{ return Read(&Char, 1); }
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int Write(const char *Buffer, size_t Chars)
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{ int Len=write(DeviceHandle, Buffer, Chars);
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return Len<=0 ? 0:Len; }
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int Write(const char *String)
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{ return Write(String, strlen(String)); }
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int Write(char Char)
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{ return Write(&Char,1); }
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} ;
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