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- /**
- * Marlin 3D Printer Firmware
- * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
- *
- * Based on Sprinter and grbl.
- * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
- *
- * This program 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.
- *
- * This program 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 this program. If not, see <https://www.gnu.org/licenses/>.
- *
- */
- #pragma once
-
- /**
- * Arduino library for MicroChip MCP4728 I2C D/A converter.
- */
-
- #include "../../core/types.h"
-
- #include <Wire.h>
-
- /**
- * The following three macros are only used in this piece of code related to mcp4728.
- * They are defined in the standard Arduino framework but could be undefined in 32 bits Arduino frameworks.
- * (For instance not defined in Arduino lpc176x framework)
- * So we have to define them if needed.
- */
- #ifndef word
- #define word(h, l) ((uint8_t) ((h << 8) | l))
- #endif
-
- #ifndef lowByte
- #define lowByte(w) ((uint8_t) ((w) & 0xFF))
- #endif
-
- #ifndef highByte
- #define highByte(w) ((uint8_t) ((w) >> 8))
- #endif
-
- #define defaultVDD DAC_STEPPER_MAX //was 5000 but differs with internal Vref
- #define BASE_ADDR 0x60
- #define RESET 0b00000110
- #define WAKE 0b00001001
- #define UPDATE 0b00001000
- #define MULTIWRITE 0b01000000
- #define SINGLEWRITE 0b01011000
- #define SEQWRITE 0b01010000
- #define VREFWRITE 0b10000000
- #define GAINWRITE 0b11000000
- #define POWERDOWNWRITE 0b10100000
- #define GENERALCALL 0b00000000
- #define GAINWRITE 0b11000000
-
- // This is taken from the original lib, makes it easy to edit if needed
- // DAC_OR_ADDRESS defined in pins_BOARD.h file
- #define DAC_DEV_ADDRESS (BASE_ADDR | DAC_OR_ADDRESS)
-
- class MCP4728 {
- public:
- static void init();
- static uint8_t analogWrite(const uint8_t channel, const uint16_t value);
- static uint8_t eepromWrite();
- static uint8_t setVref_all(const uint8_t value);
- static uint8_t setGain_all(const uint8_t value);
- static uint16_t getValue(const uint8_t channel);
- static uint8_t fastWrite();
- static uint8_t simpleCommand(const byte simpleCommand);
- static uint8_t getDrvPct(const uint8_t channel);
- static void setDrvPct(xyze_uint_t &pct);
- };
-
- extern MCP4728 mcp4728;
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