2009-01-25 00:48:56 +01:00
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/*
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2011-06-03 15:31:59 +02:00
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serial.c - Low level functions for sending and recieving bytes via the serial port
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Part of Grbl
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2009-01-25 00:48:56 +01:00
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2011-06-03 15:31:59 +02:00
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Copyright (c) 2009-2011 Simen Svale Skogsrud
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2012-02-11 19:59:35 +01:00
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Copyright (c) 2011-2012 Sungeun K. Jeon
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2009-01-25 00:48:56 +01:00
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2011-06-03 15:31:59 +02:00
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Grbl 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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2009-01-25 00:48:56 +01:00
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2011-06-03 15:31:59 +02:00
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Grbl is distributed in the hope that it will be useful,
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2009-01-25 00:48:56 +01:00
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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2011-06-03 15:31:59 +02:00
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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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2009-01-25 00:48:56 +01:00
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2011-06-03 15:31:59 +02:00
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You should have received a copy of the GNU General Public License
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along with Grbl. If not, see <http://www.gnu.org/licenses/>.
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2009-01-25 00:48:56 +01:00
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*/
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2011-06-03 15:31:59 +02:00
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/* This code was initially inspired by the wiring_serial module by David A. Mellis which
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used to be a part of the Arduino project. */
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2011-05-31 22:45:38 +02:00
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#ifndef serial_h
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#define serial_h
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2009-01-25 00:48:56 +01:00
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New startup script setting. New dry run, check gcode switches. New system state variable. Lots of reorganizing.
(All v0.8 features installed. Still likely buggy, but now thourough
testing will need to start to squash them all. As soon as we're done,
this will be pushed to master and v0.9 development will be started.
Please report ANY issues to us so we can get this rolled out ASAP.)
- User startup script! A user can now save one (up to 5 as compile-time
option) block of g-code in EEPROM memory. This will be run everytime
Grbl resets. Mainly to be used as a way to set your preferences, like
G21, G54, etc.
- New dry run and check g-code switches. Dry run moves ALL motions at
rapids rate ignoring spindle, coolant, and dwell commands. For rapid
physical proofing of your code. The check g-code switch ignores all
motion and provides the user a way to check if there are any errors in
their program that Grbl may not like.
- Program restart! (sort of). Program restart is typically an advanced
feature that allows users to restart a program mid-stream. The check
g-code switch can perform this feature by enabling the switch at the
start of the program, and disabling it at the desired point with some
minimal changes.
- New system state variable. This state variable tracks all of the
different state processes that Grbl performs, i.e. cycle start, feed
hold, homing, etc. This is mainly for making managing of these task
easier and more clear.
- Position lost state variable. Only when homing is enabled, Grbl will
refuse to move until homing is completed and position is known. This is
mainly for safety. Otherwise, it will let users fend for themselves.
- Moved the default settings defines into config.h. The plan is to
eventually create a set of config.h's for particular as-built machines
to help users from doing it themselves.
- Moved around misc defines into .h files. And lots of other little
things.
2012-11-03 18:32:23 +01:00
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#include "nuts_bolts.h"
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#define RX_BUFFER_SIZE 128
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#define TX_BUFFER_SIZE 64
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2011-06-03 21:50:02 +02:00
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#define SERIAL_NO_DATA 0xff
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New startup script setting. New dry run, check gcode switches. New system state variable. Lots of reorganizing.
(All v0.8 features installed. Still likely buggy, but now thourough
testing will need to start to squash them all. As soon as we're done,
this will be pushed to master and v0.9 development will be started.
Please report ANY issues to us so we can get this rolled out ASAP.)
- User startup script! A user can now save one (up to 5 as compile-time
option) block of g-code in EEPROM memory. This will be run everytime
Grbl resets. Mainly to be used as a way to set your preferences, like
G21, G54, etc.
- New dry run and check g-code switches. Dry run moves ALL motions at
rapids rate ignoring spindle, coolant, and dwell commands. For rapid
physical proofing of your code. The check g-code switch ignores all
motion and provides the user a way to check if there are any errors in
their program that Grbl may not like.
- Program restart! (sort of). Program restart is typically an advanced
feature that allows users to restart a program mid-stream. The check
g-code switch can perform this feature by enabling the switch at the
start of the program, and disabling it at the desired point with some
minimal changes.
- New system state variable. This state variable tracks all of the
different state processes that Grbl performs, i.e. cycle start, feed
hold, homing, etc. This is mainly for making managing of these task
easier and more clear.
- Position lost state variable. Only when homing is enabled, Grbl will
refuse to move until homing is completed and position is known. This is
mainly for safety. Otherwise, it will let users fend for themselves.
- Moved the default settings defines into config.h. The plan is to
eventually create a set of config.h's for particular as-built machines
to help users from doing it themselves.
- Moved around misc defines into .h files. And lots of other little
things.
2012-11-03 18:32:23 +01:00
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#ifdef ENABLE_XONXOFF
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#define RX_BUFFER_FULL 96 // XOFF high watermark
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#define RX_BUFFER_LOW 64 // XON low watermark
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#define SEND_XOFF 1
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#define SEND_XON 2
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#define XOFF_SENT 3
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#define XON_SENT 4
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#define XOFF_CHAR 0x13
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#define XON_CHAR 0x11
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#endif
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2011-06-03 15:36:14 +02:00
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void serial_init(long baud);
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void serial_write(uint8_t data);
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uint8_t serial_read();
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2009-01-25 00:48:56 +01:00
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2011-12-09 02:47:48 +01:00
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// Reset and empty data in read buffer. Used by e-stop and reset.
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void serial_reset_read_buffer();
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2009-01-25 00:48:56 +01:00
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#endif
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