330 lines
8.5 KiB
C++
330 lines
8.5 KiB
C++
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/*----------------------------------------------------------------------------------------------------
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#
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# Copyright (c) 2022 Yuankang Liang(XerolySkinner)
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#
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# 本软件按原样提供,无任何明示或暗示
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# 在任何情况下,作者都不承担任何损害赔偿责任
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#
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# 使用的许可声明:
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# 1. 不得歪曲本软件的来源,你不能声称你编写了原始软件.
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# 2. 免费授予以任何目的,前提是版权声明出现在所有副本中.
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# 并且版权声明和许可声明同时出现.
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# 3. 你有使用,复制,修改,分发,和销售本软件的许可.
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# 4. 如果你在产品中使用,产品文档中的声明是赞赏的但不是必须的.
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# 5. 本通知不得从任何来源删除或更改.
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#
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# Yuankang Liang(XerolySkinner)
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# E-mail:zabbcccbbaz@163.com
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# QQ:2715099320
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# Mobile Phone:13005636215
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#
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# All rights reserved.
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*/
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/**
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* @file bsp_W25Q.cpp
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* @brief 储存芯片
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* @mainpage 主要信息
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* @author Yuankang Liang(XerolySkinner)
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* @email zabbcccbbaz@163.com
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* @version V1.0.0
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* @date Mon Oct 9 08:32:28 2023
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*/
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#include "bsp_W25Q.h"
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u8 W25Q_ReadByte(void){
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u8 res=0;
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HAL_SPI_Receive(&hspi3,&res,1,0xFF);
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return res;}
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void W25Q_WriteByte(u8 val){
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HAL_SPI_Transmit(&hspi3,&val,1,0xFF);}
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//////////////////////////////////////////////////////////////////////////////////////////////////////
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//----------------------------------------------------------------------------------------------------
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// 类函数
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void W25QXX_Delay(void){
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u8 i=0;
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while(--i);}
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//4Kbytes为一个Sector
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//16个扇区为1个Block
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//W25Q128
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//容量为16M字节,共有128个Block,4096个Sector
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u16 W25QXX_TYPE; //默认是W25Q128
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void W25QXX_Init(void){
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W25QXX_TYPE = W25QXX_ReadID(); //读取FLASH ID.
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}
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//读取芯片ID
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//返回值如下:
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//0XEF13,表示芯片型号为W25Q80
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//0XEF14,表示芯片型号为W25Q16
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//0XEF15,表示芯片型号为W25Q32
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//0XEF16,表示芯片型号为W25Q64
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//0XEF17,表示芯片型号为W25Q128
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u16 W25QXX_ReadID(void) //读取FLASH ID
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{
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u16 temp = 0;
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W25QXX_CS_L;
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W25Q_WriteByte(0x90);
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W25Q_WriteByte(0x00);
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W25Q_WriteByte(0x00);
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W25Q_WriteByte(0x00);
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temp |= W25Q_ReadByte() << 8;
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temp |= W25Q_ReadByte();
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W25QXX_CS_H;
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return temp;
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}
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//读取W25QXX的状态寄存器
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//BIT7 6 5 4 3 2 1 0
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//SPR RV TB BP2 BP1 BP0 WEL BUSY
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//SPR:默认0,状态寄存器保护位,配合WP使用
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//TB,BP2,BP1,BP0:FLASH区域写保护设置
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//WEL:写使能锁定
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//BUSY:忙标记位(1,忙;0,空闲)
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//默认:0x00
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u8 W25QXX_ReadSR(void) //读取状态寄存器
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{
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u8 type = 0;
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W25QXX_CS_L; //使能器件
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W25Q_WriteByte(W25X_ReadStatusReg); //发送读取状态寄存器命令
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type = W25Q_ReadByte(); //读取一个字节
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W25QXX_CS_H; //取消片选
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return type;
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}
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//写W25QXX状态寄存器
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//只有SPR,TB,BP2,BP1,BP0(bit 7,5,4,3,2)可以写!!!
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void W25QXX_Write_SR(u8 sr) //写状态寄存器
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{
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W25QXX_CS_L;
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W25Q_WriteByte(W25X_WriteStatusReg);
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W25Q_WriteByte(sr);
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W25QXX_CS_H;
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}
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//W25QXX写使能
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//将WEL置位
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void W25QXX_Write_Enable(void) //写使能
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{
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W25QXX_CS_L;
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W25Q_WriteByte(W25X_WriteEnable);
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W25QXX_CS_H;
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}
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//W25QXX写禁止
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//将WEL清零
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void W25QXX_Write_Disable(void) //写保护
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{
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W25QXX_CS_L;
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W25Q_WriteByte(W25X_WriteDisable);
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W25QXX_CS_H;
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}
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//SPI在一页(0~65535)内写入少于256个字节的数据
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//在指定地址开始写入最大256字节的数据
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//pBuffer:数据存储区
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//WriteAddr:开始写入的地址(24bit)
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//NumByteToWrite:要写入的字节数(最大256),该数不应该超过该页的剩余字节数!!!
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void W25QXX_Write_Page(u8* pBuffer,u32 WriteAddr,u16 NumByteToWrite)
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{
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u16 i;
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W25QXX_Write_Enable();
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W25QXX_CS_L;
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W25Q_WriteByte(W25X_PageProgram); //发送写页命令
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W25Q_WriteByte((u8)(WriteAddr >> 16)); //发送24bit地址
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W25Q_WriteByte((u8)(WriteAddr >> 8));
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W25Q_WriteByte((u8)(WriteAddr));
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for(i=0;i<NumByteToWrite;i++)
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W25Q_WriteByte(pBuffer[i]);
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W25QXX_CS_H;
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W25QXX_Wait_Busy();
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}
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//无检验写SPI FLASH
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//必须确保所写的地址范围内的数据全部为0XFF,否则在非0XFF处写入的数据将失败!
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//具有自动换页功能
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//在指定地址开始写入指定长度的数据,但是要确保地址不越界!
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//pBuffer:数据存储区
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//WriteAddr:开始写入的地址(24bit)
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//NumByteToWrite:要写入的字节数(最大65535)
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//CHECK OK
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void W25QXX_Write_NoCheck(u8* pBuffer,u32 WriteAddr,u16 NumByteToWrite)
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{
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u16 pageremain;
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pageremain = 256 - WriteAddr%256; //单页剩余的字节数
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if(NumByteToWrite <= pageremain)
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{ //不大于256个字节
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pageremain = NumByteToWrite;
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}
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while(1)
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{
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W25QXX_Write_Page(pBuffer,WriteAddr,pageremain);
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if(NumByteToWrite == pageremain)
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{ //写入结束了
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break;
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}
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else
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{
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pBuffer += pageremain;
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WriteAddr += pageremain;
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NumByteToWrite -= pageremain; //减去已经写入了的字节数
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if(NumByteToWrite > 256)
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{ //一次可以写入256个字节
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pageremain = 256;
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}
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else
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{
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pageremain = NumByteToWrite; //不够256个字节了
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}
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}
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}
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}
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//读取SPI FLASH
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//在指定地址开始读取指定长度的数据
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//pBuffer:数据存储区
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//ReadAddr:开始读取的地址(24bit)
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//NumByteToRead:要读取的字节数(最大65535)
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void W25QXX_Read(u8* pBuffer,u32 ReadAddr,u16 NumByteToRead) //读取flash
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{
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u16 i;
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W25QXX_CS_L;
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W25Q_WriteByte(W25X_ReadData); //发送读指令
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W25Q_WriteByte((u8)(ReadAddr >> 16)); //发送24bit地址
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W25Q_WriteByte((u8)(ReadAddr >> 8));
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W25Q_WriteByte((u8)(ReadAddr));
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for(i=0;i<NumByteToRead;i++)
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{
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pBuffer[i] = W25Q_ReadByte(); // 读取数据
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}
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W25QXX_CS_H;
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}
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//写SPI FLASH
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//在指定地址开始写入指定长度的数据
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//该函数带擦除操作!
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//pBuffer:数据存储区
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//WriteAddr:开始写入的地址(24bit)
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//NumByteToWrite:要写入的字节数(最大65535)
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u8 W25QXX_BUFFER[4096];
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void W25QXX_Write(u8* pBuffer,u32 WriteAddr,u16 NumByteToWrite)//写入flash
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{
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u32 secpos;
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u16 secoff;
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u16 secremain;
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u16 i;
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u8 * W25QXX_BUF;
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W25QXX_BUF = W25QXX_BUFFER;
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secpos = WriteAddr / 4096; //扇区地址
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secoff = WriteAddr % 4096; //在扇区内的偏移
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secremain = 4096 - secoff; //扇区剩余空间大小
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if(NumByteToWrite <= secremain)
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{ //不大于4096个字节
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secremain = NumByteToWrite;
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}
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while(1)
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{
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W25QXX_Read(W25QXX_BUF,secpos*4096,4096); //读出整个扇区的内容
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for(i=0;i<secremain;i++)
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{ //校验数据
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if(W25QXX_BUF[secoff+i] != 0xFF)
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{ //需要擦除
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break;
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}
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}
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if(i<secremain)
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{ //需要擦除
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W25QXX_Erase_Sector(secpos); //擦除这个扇区
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for(i=0;i<secremain;i++)
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{ //复制
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W25QXX_BUF[i+secoff] = pBuffer[i];
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}
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W25QXX_Write_NoCheck(W25QXX_BUF,secpos*4096,4096); //写入整个扇区
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}
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else
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{
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W25QXX_Write_NoCheck(pBuffer,WriteAddr,secremain); //写已经擦除了的,直接写入扇区剩余区间.
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}
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if(NumByteToWrite == secremain)
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{ //写入结束了
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break;
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}
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else
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{ //写入未结束
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secpos++; //扇区地址增1
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secoff = 0; //偏移位置为0
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pBuffer += secremain; //指针偏移
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WriteAddr += secremain; //写地址偏移
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NumByteToWrite -= secremain; //字节数递减
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if(NumByteToWrite>4096)
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{ //下一个扇区还是写不完
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secremain = 4096;
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}
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else
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{ //下一个扇区可以写完了
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secremain = NumByteToWrite;
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}
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}
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}
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}
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//擦除整个芯片
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//等待时间超长...
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void W25QXX_Erase_Chip(void) //整片擦除
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{
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W25QXX_Write_Enable(); //SET WEL
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W25QXX_Wait_Busy();
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W25QXX_CS_L; //使能器件
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W25Q_WriteByte(W25X_ChipErase); //发送片擦除命令
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W25QXX_CS_H; //取消片选
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W25QXX_Wait_Busy(); //等待芯片擦除结束
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}
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//擦除一个扇区
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//Dst_Addr:扇区地址 根据实际容量设置
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//擦除一个扇区的最少时间:150ms
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void W25QXX_Erase_Sector(u32 Dst_Addr) //扇区擦除
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{
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Dst_Addr *= 4096;
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W25QXX_Write_Enable(); //SET WEL
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W25QXX_Wait_Busy();
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W25QXX_CS_L;
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W25Q_WriteByte(W25X_SectorErase); //发送扇区擦除指令
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W25Q_WriteByte((u8)(Dst_Addr >> 16)); //发送24bit地址
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W25Q_WriteByte((u8)(Dst_Addr >> 8));
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W25Q_WriteByte((u8)Dst_Addr);
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W25QXX_CS_H; //取消片选
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W25QXX_Wait_Busy(); //等待擦除完成
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}
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void W25QXX_Wait_Busy(void) //等待空闲
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{
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while(W25QXX_ReadSR() & 0x01);
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}
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void W25QXX_PowerDown(void) //进入掉电模式
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{
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W25QXX_CS_L;
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W25Q_WriteByte(W25X_PowerDown);
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W25QXX_CS_H;
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W25QXX_Delay();
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}
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void W25QXX_WAKEUP(void) //唤醒
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{
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W25QXX_CS_L;
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W25Q_WriteByte(W25X_ReleasePowerDown);
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W25QXX_CS_H;
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W25QXX_Delay();
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}
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//////////////////////////////////////////////////////////////////////////////////////////////////////
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