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