71 lines
2.1 KiB
C
71 lines
2.1 KiB
C
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/**
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* Marlin 3D Printer Firmware
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* Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
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*
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* Based on Sprinter and grbl.
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* Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
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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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*/
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/**
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* M260: Send data to a I2C slave device
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*
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* This is a PoC, the formating and arguments for the GCODE will
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* change to be more compatible, the current proposal is:
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*
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* M260 A<slave device address base 10> ; Sets the I2C slave address the data will be sent to
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*
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* M260 B<byte-1 value in base 10>
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* M260 B<byte-2 value in base 10>
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* M260 B<byte-3 value in base 10>
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*
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* M260 S1 ; Send the buffered data and reset the buffer
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* M260 R1 ; Reset the buffer without sending data
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*
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*/
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void gcode_M260() {
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// Set the target address
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if (parser.seen('A')) i2c.address(parser.value_byte());
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// Add a new byte to the buffer
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if (parser.seen('B')) i2c.addbyte(parser.value_byte());
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// Flush the buffer to the bus
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if (parser.seen('S')) i2c.send();
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// Reset and rewind the buffer
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else if (parser.seen('R')) i2c.reset();
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}
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/**
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* M261: Request X bytes from I2C slave device
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*
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* Usage: M261 A<slave device address base 10> B<number of bytes>
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*/
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void gcode_M261() {
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if (parser.seen('A')) i2c.address(parser.value_byte());
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uint8_t bytes = parser.byteval('B', 1);
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if (i2c.addr && bytes && bytes <= TWIBUS_BUFFER_SIZE) {
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i2c.relay(bytes);
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}
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else {
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SERIAL_ERROR_START();
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SERIAL_ERRORLN("Bad i2c request");
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}
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}
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