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82 lines
2.6 KiB
82 lines
2.6 KiB
/**
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* Marlin 3D Printer Firmware
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* Copyright (c) 2020 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 <https://www.gnu.org/licenses/>.
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*
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*/
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#pragma once
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/**
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* Arduino library for MicroChip MCP4728 I2C D/A converter.
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*/
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#include "../../core/types.h"
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#include <Wire.h>
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/**
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* The following three macros are only used in this piece of code related to mcp4728.
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* They are defined in the standard Arduino framework but could be undefined in 32 bits Arduino frameworks.
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* (For instance not defined in Arduino lpc176x framework)
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* So we have to define them if needed.
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*/
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#ifndef word
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#define word(h, l) ((uint8_t) ((h << 8) | l))
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#endif
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#ifndef lowByte
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#define lowByte(w) ((uint8_t) ((w) & 0xFF))
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#endif
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#ifndef highByte
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#define highByte(w) ((uint8_t) ((w) >> 8))
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#endif
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#define defaultVDD DAC_STEPPER_MAX //was 5000 but differs with internal Vref
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#define BASE_ADDR 0x60
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#define RESET 0b00000110
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#define WAKE 0b00001001
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#define UPDATE 0b00001000
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#define MULTIWRITE 0b01000000
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#define SINGLEWRITE 0b01011000
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#define SEQWRITE 0b01010000
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#define VREFWRITE 0b10000000
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#define GAINWRITE 0b11000000
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#define POWERDOWNWRITE 0b10100000
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#define GENERALCALL 0b00000000
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#define GAINWRITE 0b11000000
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// This is taken from the original lib, makes it easy to edit if needed
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// DAC_OR_ADDRESS defined in pins_BOARD.h file
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#define DAC_DEV_ADDRESS (BASE_ADDR | DAC_OR_ADDRESS)
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class MCP4728 {
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public:
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static void init();
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static uint8_t analogWrite(const uint8_t channel, const uint16_t value);
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static uint8_t eepromWrite();
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static uint8_t setVref_all(const uint8_t value);
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static uint8_t setGain_all(const uint8_t value);
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static uint16_t getValue(const uint8_t channel);
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static uint8_t fastWrite();
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static uint8_t simpleCommand(const byte simpleCommand);
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static uint8_t getDrvPct(const uint8_t channel);
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static void setDrvPct(xyze_uint_t &pct);
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};
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extern MCP4728 mcp4728;
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