grbl/serial.h

59 wiersze
1.5 KiB
C

/*
serial.c - Low level functions for sending and recieving bytes via the serial port
Part of Grbl
Copyright (c) 2011-2014 Sungeun K. Jeon
Copyright (c) 2009-2011 Simen Svale Skogsrud
Grbl is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Grbl is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Grbl. If not, see <http://www.gnu.org/licenses/>.
*/
/* This code was initially inspired by the wiring_serial module by David A. Mellis which
used to be a part of the Arduino project. */
#ifndef serial_h
#define serial_h
#ifndef RX_BUFFER_SIZE
#define RX_BUFFER_SIZE 128
#endif
#ifndef TX_BUFFER_SIZE
#define TX_BUFFER_SIZE 64
#endif
#define SERIAL_NO_DATA 0xff
#ifdef ENABLE_XONXOFF
#define RX_BUFFER_FULL 96 // XOFF high watermark
#define RX_BUFFER_LOW 64 // XON low watermark
#define SEND_XOFF 1
#define SEND_XON 2
#define XOFF_SENT 3
#define XON_SENT 4
#define XOFF_CHAR 0x13
#define XON_CHAR 0x11
#endif
void serial_init();
void serial_write(uint8_t data);
uint8_t serial_read();
// Reset and empty data in read buffer. Used by e-stop and reset.
void serial_reset_read_buffer();
#endif