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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
-
- /********************************************************************************
- * @file BL24CXX.h
- * @brief i2c EEPROM for Ender 3 v2 board (4.2.2)
- ********************************************************************************/
-
- /******************** IIC ********************/
-
- class BL24CXX;
-
- // All operation functions of IIC
- class IIC {
- friend class BL24CXX;
- protected:
- static void init(); // Initialize the IO port of IIC
- static void start(); // Send IIC start signal
- static void stop(); // Send IIC stop signal
- static void send_byte(uint8_t txd); // IIC sends a byte
- static uint8_t read_byte(unsigned char ack); // IIC reads a byte
- static uint8_t wait_ack(); // IIC waits for ACK signal
- static void ack(); // IIC sends ACK signal
- static void nAck(); // IIC does not send ACK signal
- };
-
- /******************** EEPROM ********************/
-
- #define BL24C01 127
- #define BL24C02 255
- #define BL24C04 511
- #define BL24C08 1023
- #define BL24C16 2047
- #define BL24C32 4095
- #define BL24C64 8191
- #define BL24C128 16383
- #define BL24C256 32767
- #define EE_TYPE BL24C16
-
- class BL24CXX {
- private:
- static bool _check(); // Check the device
- public:
- static void init(); // Initialize IIC
- static bool check(); // Check / recheck the device
- static uint8_t readOneByte(uint16_t ReadAddr); // Read a byte at the specified address
- static void writeOneByte(uint16_t WriteAddr, uint8_t DataToWrite); // Write a byte at the specified address
- static void writeLenByte(uint16_t WriteAddr, uint32_t DataToWrite, uint8_t Len); // The specified address begins to write the data of the specified length
- static uint32_t readLenByte(uint16_t ReadAddr, uint8_t Len); // The specified address starts to read the data of the specified length
- static void write(uint16_t WriteAddr, uint8_t *pBuffer, uint16_t NumToWrite); // Write the specified length of data from the specified address
- static void read(uint16_t ReadAddr, uint8_t *pBuffer, uint16_t NumToRead); // Read the data of the specified length from the specified address
- };
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