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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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