mirror of
https://github.com/MarlinFirmware/Marlin.git
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87 lines
3.5 KiB
C
87 lines
3.5 KiB
C
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/**
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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 <http://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 eeprom_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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#include <libmaple/gpio.h>
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/******************** IIC ********************/
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//IO方向设置
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#define SDA_IN() do{ PIN_MAP[IIC_EEPROM_SDA].gpio_device->regs->CRH &= 0XFFFF0FFF; PIN_MAP[IIC_EEPROM_SDA].gpio_device->regs->CRH |= 8 << 12; }while(0)
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#define SDA_OUT() do{ PIN_MAP[IIC_EEPROM_SDA].gpio_device->regs->CRH &= 0XFFFF0FFF; PIN_MAP[IIC_EEPROM_SDA].gpio_device->regs->CRH |= 3 << 12; }while(0)
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//IO操作函数
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#define IIC_SCL_0() WRITE(IIC_EEPROM_SCL, LOW)
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#define IIC_SCL_1() WRITE(IIC_EEPROM_SCL, HIGH)
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#define IIC_SDA_0() WRITE(IIC_EEPROM_SDA, LOW)
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#define IIC_SDA_1() WRITE(IIC_EEPROM_SDA, HIGH)
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#define READ_SDA() READ(IIC_EEPROM_SDA)
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class BL24CXX;
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// IIC所有操作函数
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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(); // 初始化IIC的IO口
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static void start(); // 发送IIC开始信号
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static void stop(); // 发送IIC停止信号
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static void send_byte(uint8_t txd); // IIC发送一个字节
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static uint8_t read_byte(unsigned char ack); // IIC读取一个字节
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static uint8_t wait_ack(); // IIC等待ACK信号
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static void ack(); // IIC发送ACK信号
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static void nAck(); // IIC不发送ACK信号
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static void write_one_byte(uint8_t daddr, uint8_t addr, uint8_t data);
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static uint8_t read_one_byte(uint8_t daddr, uint8_t addr);
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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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public:
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static void init(); //初始化IIC
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static uint8_t check(); //检查器件
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static uint8_t readOneByte(uint16_t ReadAddr); //指定地址读取一个字节
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static void writeOneByte(uint16_t WriteAddr, uint8_t DataToWrite); //指定地址写入一个字节
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static void writeLenByte(uint16_t WriteAddr, uint32_t DataToWrite, uint8_t Len);//指定地址开始写入指定长度的数据
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static uint32_t readLenByte(uint16_t ReadAddr, uint8_t Len); //指定地址开始读取指定长度数据
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static void write(uint16_t WriteAddr, uint8_t *pBuffer, uint16_t NumToWrite); //从指定地址开始写入指定长度的数据
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static void read(uint16_t ReadAddr, uint8_t *pBuffer, uint16_t NumToRead); //从指定地址开始读出指定长度的数据
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};
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