632 lines
18 KiB
C
632 lines
18 KiB
C
/*****************************************************************************
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** 文件名称：flash.c
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** 功 能：
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** 修改日志：
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******************************************************************************/
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#include "w25q128.h"
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#include "bsp_os.h"
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unsigned short int ID=0;
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unsigned char only_id[8] = {0};
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static BSP_OS_SEM w25q128_mutex;//共享资源锁
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/*******************************************************************************
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** 函数名称：void Flash_GPIO_Init(void)
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** 功 能：
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** 修改日志：
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*******************************************************************************/
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void Flash_GPIO_Init(void)
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{
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BSP_OS_SemCreate(&w25q128_mutex,1u,"w25q128_mutex");//创建信号量
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rcu_periph_clock_enable(RCU_GPIOB);
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rcu_periph_clock_enable(RCU_GPIOE);
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//MOSI_PIN3,,,,SCK_PIN5
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gpio_mode_set(GPIOB, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, GPIO_PIN_3| GPIO_PIN_5);
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gpio_output_options_set(GPIOB, GPIO_OTYPE_PP, GPIO_OSPEED_25MHZ, GPIO_PIN_3| GPIO_PIN_5);
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//MISO
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gpio_mode_set(GPIOB, GPIO_MODE_INPUT, GPIO_PUPD_NONE, GPIO_PIN_4);
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//CS
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gpio_mode_set(GPIOB, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, GPIO_PIN_8);
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gpio_output_options_set(GPIOB, GPIO_OTYPE_PP, GPIO_OSPEED_25MHZ, GPIO_PIN_8);
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FLASH_CS_DISABLE;
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FLASH_CLK_HIGH;
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FLASH_DI_LOW;
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}
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/*****************************************************************************
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** 文件名称： Flash_ReadOneByte
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** 功 能：
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** 修改日志：
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******************************************************************************/
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static u_int8_t Flash_ReadOneByte(void)
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{
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u_int8_t retValue = 0;
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FLASH_CLK_HIGH; //时钟线拉高,恢复时钟线为高电平
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for(u_int8_t i= 0; i < 8; i++)
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{
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retValue <<= 1;
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FLASH_CLK_HIGH; //时钟线拉高,恢复时钟线为高电平
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if(FLASH_DO_READ)
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{
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retValue |= 0x01;
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}
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else
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{
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retValue &= 0xFE;
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}
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FLASH_CLK_LOW; //时钟线拉低,产生下降沿读出数据
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}
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FLASH_CLK_HIGH;
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return (retValue);
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}
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/*****************************************************************************
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** 文件名称：Flash_WriteOneByte
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** 功 能：
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** 修改日志：
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******************************************************************************/
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static void Flash_WriteOneByte(u_int8_t DataBuffer)
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{
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FLASH_CLK_LOW; //时钟线拉低，恢复时钟线为低电平
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for(u_int8_t i = 0; i < 8; i++)
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{
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FLASH_CLK_LOW; //时钟线拉低，恢复时钟线为低电平
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if(DataBuffer & 0x80)
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{
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FLASH_DI_HIGH;
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}
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else
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{
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FLASH_DI_LOW;
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}
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DataBuffer <<= 1;
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FLASH_CLK_HIGH; //时钟线拉高，产生上升沿写入数据
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}
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FLASH_CLK_LOW;
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FLASH_DI_HIGH; //一字节数据传送完毕，MOSI数据线置高表示空闲状态
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}
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/*****************************************************************************
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** 文件名称： Flash_Write_CMD
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** 功 能：
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** 修改日志：
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******************************************************************************/
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static void Flash_Write_CMD(u_int8_t *pCMD)
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{
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#ifdef FLASH_W25Q256
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for(u_int8_t i = 0; i < 4; i++) //new add
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{
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Flash_WriteOneByte(pCMD[i]);
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}
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#endif
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#ifdef FLASH_W25Q128
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for(u_int8_t i = 0; i < 3; i++) //new add
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{
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Flash_WriteOneByte(pCMD[i]);
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}
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#endif
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}
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/*****************************************************************************
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** 文件名称： u_int16_t Flash_ReadSR
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** 功 能：
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** 修改日志：
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******************************************************************************/
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static u_int8_t Flash_ReadSR(void)
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{
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u_int8_t retValue = 0;
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FLASH_CS_ENABLE;
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Flash_WriteOneByte(Flash_ReadSR_CMD);
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retValue = Flash_ReadOneByte();
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FLASH_CS_DISABLE;
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return retValue;
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}
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/*****************************************************************************
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** 文件名称：Flash_Wait_Busy
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** 功 能：
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** 修改日志：
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******************************************************************************/
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static void Flash_Wait_Busy(void)
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{
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u_int32_t i =0;
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while(((Flash_ReadSR() & FLASH_WRITE_BUSYBIT) == 0x01) && (i<0x1ffff))
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{
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i ++;
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}
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}
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/*****************************************************************************
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** 文件名称：static void Flash_Write_Enable(void)
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** 功 能：
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** 修改日志：
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******************************************************************************/
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static void Flash_Write_Enable(void)
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{
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FLASH_CS_ENABLE;
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Flash_WriteOneByte(Flash_WriteEnable_CMD);
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FLASH_CS_DISABLE;
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}
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void Enter4ByteAddrMode(void)
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{
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FLASH_CS_ENABLE; //使能器件
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Flash_WriteOneByte(W25Q_4ByteAddrModeEnable); //进入4Byte地址模式W25Q128以上使用
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FLASH_CS_DISABLE;
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}
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void Exit4ByteAddrMode(void)
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{
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FLASH_CS_ENABLE; //使能器件
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Flash_WriteOneByte(W25Q_Exit4ByteAddrModeEnable); //进入4Byte地址模式W25Q128以上使用
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FLASH_CS_DISABLE;
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}
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/*****************************************************************************
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** 文件名称： void Flash_Erase_Sector(u_int16_t Block_Num,u_int16_t Sector_Number)
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** 功 能：
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** 修改日志：
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******************************************************************************/
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void Flash_Erase_Sector(u_int8_t Block_Num,u_int8_t Sector_Number)
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{
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BSP_OS_SemWait(&w25q128_mutex, 0u);
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u_int8_t pcmd[3] = {0};
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Flash_Write_Enable();
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FLASH_CS_ENABLE;
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Flash_WriteOneByte(Flash_SecErase_CMD);
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pcmd[0] = Block_Num;
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pcmd[1] = Sector_Number<<4;
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pcmd[2] = 0;
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Flash_Write_CMD(pcmd);
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FLASH_CS_DISABLE;
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Flash_Wait_Busy();//每次擦除数据都要延时等待写入结束
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BSP_OS_SemPost(&w25q128_mutex);
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return ;
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}
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/*****************************************************************************
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** 文件名称：void Flash_Erase_Block(u_int8_t BlockNum)
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** 功 能：擦除BLOCK
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** 修改日志：
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******************************************************************************/
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void Flash_Erase_Block(u_int8_t BlockNum)
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{
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BSP_OS_SemWait(&w25q128_mutex, 0u);
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u_int8_t pcmd[3] = {0};
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Flash_Write_Enable(); //写使能
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FLASH_CS_ENABLE; //片选拉低
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Flash_WriteOneByte(Flash_BlockErase_CMD); //传输Block擦除指令
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pcmd[0] = BlockNum ; //传24位地址
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Flash_Write_CMD(pcmd);
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FLASH_CS_DISABLE;
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Flash_Wait_Busy(); //每次擦除数据都要延时等待写入结束
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BSP_OS_SemPost(&w25q128_mutex);
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return ;
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}
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/*****************************************************************************
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** 文件名称：void Flash_Write_Page(u_int8_t *pBuffer, u_int32_t WriteAddr, u_int32_t WriteBytesNum)
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** 功 能：
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** 修改日志：
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******************************************************************************/
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void Flash_Write_Page(u_int8_t *pBuffer, u_int32_t WriteAddr, u_int32_t WriteBytesNum)
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{
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u_int8_t pcmd[4] = {0};
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Flash_Write_Enable();
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FLASH_CS_ENABLE;
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Flash_WriteOneByte(Flash_PageProgram_CMD);
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#ifdef FLASH_W25Q256
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pcmd[0] = (u_int8_t)((WriteAddr&0xff000000)>>24); //new add
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pcmd[1] = (u_int8_t)((WriteAddr&0x00ff0000)>>16);
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pcmd[2] = (u_int8_t)((WriteAddr&0x0000ff00)>>8);
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pcmd[3] = (u_int8_t)WriteAddr;
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#endif
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#ifdef FLASH_W25Q128
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pcmd[0] = (u_int8_t)((WriteAddr&0x00ff0000)>>16);
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pcmd[1] = (u_int8_t)((WriteAddr&0x0000ff00)>>8);
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pcmd[2] = (u_int8_t)WriteAddr;
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#endif
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Flash_Write_CMD(pcmd);
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for(u_int32_t i = 0;i < WriteBytesNum; i++)
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{
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Flash_WriteOneByte(pBuffer[i]); //向Flash中写入最大一页256bytes字节数据
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}
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FLASH_CS_DISABLE;
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Flash_Wait_Busy(); //每次写入一定数量的数据都要延时等待写入结束
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return;
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}
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/*****************************************************************************
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** 文件名称：void Flash_Write_MorePage(u_int8_t *pBuffer, u_int32_t WriteAddr, u_int32_t WriteBytesNum)
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** 功 能：
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** 修改日志：
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******************************************************************************/
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void Flash_Write_MorePage(u_int8_t *pBuffer, u_int32_t WriteAddr, u_int32_t WriteBytesNum)
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{
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BSP_OS_SemWait(&w25q128_mutex, 0u);
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u_int16_t PageByteRemain = 0;
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PageByteRemain = Flash_PAGEBYTE_LENGTH - WriteAddr%Flash_PAGEBYTE_LENGTH;
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if(WriteBytesNum <= PageByteRemain)
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{
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PageByteRemain = WriteBytesNum;
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}
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while(1)
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{
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Flash_Write_Page(pBuffer,WriteAddr,PageByteRemain);
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if(WriteBytesNum == PageByteRemain)
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{
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break;
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}
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else
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{
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pBuffer += PageByteRemain;
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WriteAddr += PageByteRemain;
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WriteBytesNum -= PageByteRemain;
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if(WriteBytesNum > Flash_PAGEBYTE_LENGTH)
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{
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PageByteRemain = Flash_PAGEBYTE_LENGTH;
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}
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else
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{
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PageByteRemain = WriteBytesNum;
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}
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}
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}
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BSP_OS_SemPost(&w25q128_mutex);
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return;
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}
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/*****************************************************************************
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** 文件名称：void Flash_Read(u_int8_t *pBuffer,u_int32_t ReadAddr,u_int32_t ReadBytesNum)
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** 功 能：
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** 修改日志：
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******************************************************************************/
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void Flash_Read(u_int8_t *pBuffer,u_int32_t ReadAddr,u_int32_t ReadBytesNum)
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{
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BSP_OS_SemWait(&w25q128_mutex, 0u);
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u_int8_t pcmd[4] = {0};
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FLASH_CS_ENABLE; //打开spiflash片选
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Flash_WriteOneByte(Flash_ReadData_CMD);
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#ifdef FLASH_W25Q256
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pcmd[0] = (u_int8_t)((ReadAddr&0xff000000)>>24); //new add
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pcmd[1] = (u_int8_t)((ReadAddr&0x00ff0000)>>16);
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pcmd[2] = (u_int8_t)((ReadAddr&0x0000ff00)>>8);
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pcmd[3] = (u_int8_t)ReadAddr;
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#endif
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#ifdef FLASH_W25Q128
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pcmd[0] = (u_int8_t)((ReadAddr&0x00ff0000)>>16);
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pcmd[1] = (u_int8_t)((ReadAddr&0x0000ff00)>>8);
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pcmd[2] = (u_int8_t)ReadAddr;
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#endif
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Flash_Write_CMD(pcmd);
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for(u_int32_t i = 0;i < ReadBytesNum; i++)
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{
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pBuffer[i] = Flash_ReadOneByte(); //读取SPIflash中指定bytes字节数据
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}
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FLASH_CS_DISABLE;
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BSP_OS_SemPost(&w25q128_mutex);
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return ;
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}
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/*大量数据写入FLASH*/
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void write_many_data(int n,unsigned char *p,unsigned int start_address)
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{ /*n是数据总长度,*p是要写入数据的地址，start_address是写入Flash的地址，将除了帧头和动作之外的所有数据全部写入FLASH中*/
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unsigned char block;
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if((start_address%65536)==0)
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{
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block=(start_address/65536);
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Flash_Erase_Block(block);
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}
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Flash_Write_MorePage(p,start_address,n);//写入的数据是除开帧头和动作后剩下的所有数据
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}
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//falsh随机存储函数，即可以在FLASH任意一个地址存储数据
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//write_add写入的首地址
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//cache_add缓存地址，缓存大小默认为一个sector，即4KB。由于flash写入数据需要将整个sector擦出，因此为了不影响sector其他不需要修改的数据，则需要一个缓存区。
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//*data需要写入数据的指针
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//len需要写入数据的长度
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//随机写入校验码计算
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unsigned int w25q128_random_crc(char *data, unsigned int len)
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{
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unsigned int i = 0;
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unsigned int crc = 0;
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for(i = 0; i < len; i++)
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{
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crc = crc + data[i];
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}
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return crc;
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}
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//根据BLOCK和SECTOR计算详细的地址
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w25q128_add_inf w25q128_block_sector_to_add(unsigned char block, unsigned char sector)
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{
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w25q128_add_inf inf;
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inf.block = block;
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inf.sector = sector;
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//计算所处block的首地址
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inf.block_first_add = 64 * 1024 * inf.block;
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//计算所处block的尾地址
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inf.block_tail_add = 64 * 1024 * (inf.block + 1) - 1;
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//计算所处sector的首地址
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inf.sector_first_add = 64 * 1024 * inf.block + 4 * 1024 * inf.sector;
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//计算所处sector的尾地址
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inf.sector_tail_add = 64 * 1024 * inf.block + 4 * 1024 * (inf.sector + 1) - 1;
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inf.add = inf.sector_first_add;//此处返回该sector的首地址
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return inf;
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}
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//通过某个地址，计算该地址对应的block和sector等详细的地址信息
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w25q128_add_inf w25q128_add_to_block_sector(unsigned int add)
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{
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w25q128_add_inf inf;
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inf.add = add;
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//计算处于哪个block
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if((add + 1) >= (64 * 1024))
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{
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if((add + 1) % (64 * 1024) == 0)
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{
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inf.block = (add + 1) / (64 * 1024) - 1;
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}
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else
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{
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inf.block = (add + 1) / (64 * 1024);
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}
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}
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else
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{
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inf.block = 0;
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}
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//计算所处block的首地址
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inf.block_first_add = 64 * 1024 * inf.block;
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//计算所处block的尾地址
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inf.block_tail_add = 64 * 1024 * (inf.block + 1) - 1;
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//计算处于哪个sector
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if((add + 1 - inf.block * 64 * 1024) >= (4 * 1024))
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{
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if((add + 1 - inf.block * 64 * 1024) % (4 * 1024) == 0)
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{
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inf.sector = (add + 1 - inf.block * 64 * 1024) / (4 * 1024) - 1;
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}
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else
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{
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inf.sector = (add + 1 - inf.block * 64 * 1024) / (4 * 1024);
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}
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}
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else
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{
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inf.sector = 0;
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}
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//计算所处sector的首地址
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inf.sector_first_add = 64 * 1024 * inf.block + 4 * 1024 * inf.sector;
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//计算所处sector的尾地址
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inf.sector_tail_add = 64 * 1024 * inf.block + 4 * 1024 * (inf.sector + 1) - 1;
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return inf;
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}
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//随机写入数据
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//write_add随机写入的地址；cache_add缓存区地址，必须是某个sector的首地址；*data需要写入数据的指针；len需要写入数据的长度
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char w25q128_random_write(unsigned int write_add, unsigned int cache_add, char *data, unsigned int len)
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{
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unsigned int save_write_add, save_read_add, cache_write_add, cache_read_add;
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unsigned char data_buffer[W25Q128_BUFFER_LEN];
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unsigned int i ,j;
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unsigned int total_byte, replace_len, replace_len_total; //需要从新写入的所有字节数,需要替换的长度
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w25q128_add_inf save_write_inf, save_first_sector_inf, save_tail_sector_inf, cache_inf;
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save_first_sector_inf = w25q128_add_to_block_sector(write_add);
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save_tail_sector_inf = w25q128_add_to_block_sector(write_add + len - 1);
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cache_inf = w25q128_add_to_block_sector(cache_add);
|
||
//清除缓存区SECTOR的数据
|
||
Flash_Erase_Sector(cache_inf.block, cache_inf.sector);
|
||
|
||
total_byte =
|
||
(save_tail_sector_inf.block - save_first_sector_inf.block + 1) * 64 * 1024 - save_first_sector_inf.sector * 4 * 1024 - ( 15 - save_tail_sector_inf.sector) * 4 * 1024;
|
||
|
||
save_read_add =
|
||
w25q128_block_sector_to_add(save_first_sector_inf.block, save_first_sector_inf.sector).sector_first_add;//计算需要搬运数据的第一个sector的首地址
|
||
save_write_add = save_read_add;
|
||
|
||
|
||
cache_read_add = cache_inf.sector_first_add;
|
||
cache_write_add = cache_read_add;
|
||
|
||
replace_len_total = 0;
|
||
|
||
|
||
for(i = 0; i < total_byte; i = i + W25Q128_BUFFER_LEN)
|
||
{
|
||
memset(data_buffer, 0, sizeof(data_buffer));
|
||
//读出256字节数据
|
||
Flash_Read((unsigned char *)data_buffer, save_read_add, W25Q128_BUFFER_LEN);
|
||
|
||
//判断读出的256个字节有没有需要更改的地方
|
||
if((write_add + replace_len_total) >= save_read_add && (write_add + replace_len_total) <= (save_read_add + W25Q128_BUFFER_LEN - 1))
|
||
{
|
||
//如果尾地址也是在该256个字节中
|
||
if((write_add + len - 1) >= save_read_add && (write_add + len - 1) <= (save_read_add + W25Q128_BUFFER_LEN - 1))
|
||
{
|
||
//计算需要替换的数据长度
|
||
replace_len = (write_add + len - 1) - (write_add + replace_len_total) + 1;
|
||
}
|
||
else
|
||
{
|
||
//计算需要替换的数据长度
|
||
replace_len = (save_read_add + W25Q128_BUFFER_LEN - 1) - (write_add + replace_len_total) + 1;
|
||
}
|
||
//替换数据
|
||
memcpy((data_buffer + (write_add + replace_len_total - save_read_add)), (data + replace_len_total), replace_len);//替换数据
|
||
|
||
replace_len_total = replace_len_total + replace_len;
|
||
}
|
||
|
||
//向缓存区写入数据
|
||
Flash_Write_MorePage(data_buffer, cache_write_add, W25Q128_BUFFER_LEN);
|
||
|
||
cache_write_add = cache_write_add + W25Q128_BUFFER_LEN;
|
||
save_read_add = save_read_add + W25Q128_BUFFER_LEN;
|
||
|
||
//当缓存区的数据写满时，则将数据复制写入到原来的数据存储区中
|
||
if(cache_write_add == cache_inf.sector_tail_add + 1)
|
||
{
|
||
//擦出原来sector中的数据
|
||
save_write_inf = w25q128_add_to_block_sector(save_write_add);
|
||
Flash_Erase_Sector(save_write_inf.block, save_write_inf.sector);
|
||
|
||
for(j = 0; j < 4 * 1024; j = j + W25Q128_BUFFER_LEN)
|
||
{
|
||
memset(data_buffer, 0, sizeof(data_buffer));
|
||
//读出缓存区中的数据
|
||
Flash_Read((unsigned char *)data_buffer, cache_read_add, W25Q128_BUFFER_LEN);
|
||
//向存储区复写入数据
|
||
Flash_Write_MorePage(data_buffer, save_write_add, W25Q128_BUFFER_LEN);
|
||
|
||
cache_read_add = cache_read_add + W25Q128_BUFFER_LEN;
|
||
save_write_add = save_write_add + W25Q128_BUFFER_LEN;
|
||
}
|
||
|
||
Flash_Erase_Sector(cache_inf.block, cache_inf.sector);
|
||
cache_read_add = cache_inf.sector_first_add;
|
||
cache_write_add = cache_read_add;
|
||
}
|
||
}
|
||
return 1;
|
||
}
|
||
|
||
|
||
/*****************************************************************************
|
||
** 文件名称：void FLASH_BulkErase()
|
||
** 功 能：整块擦除
|
||
** 修改日志：LiHong@2021.09.29
|
||
******************************************************************************/
|
||
void FLASH_BulkErase()
|
||
{
|
||
BSP_OS_SemWait(&w25q128_mutex, 0u);
|
||
|
||
Flash_Write_Enable(); //写使能
|
||
Flash_Wait_Busy();
|
||
FLASH_CS_ENABLE; //片选拉低
|
||
Flash_WriteOneByte(Flash_Chip_Erase_CMD);
|
||
// 发送完指令后，cs必须拉高，否则指令不执行
|
||
FLASH_CS_DISABLE;
|
||
Flash_Wait_Busy();
|
||
BSP_OS_SemPost(&w25q128_mutex);
|
||
return ;
|
||
}
|
||
|
||
|
||
|
||
/*****************************************************************************
|
||
** 文件名称：void Read_w25q128_ID()
|
||
** 功 能：读系列ID
|
||
** 修改日志：LiHong@2022.05.20
|
||
******************************************************************************/
|
||
void Read_w25q128_ID()
|
||
{
|
||
FLASH_CS_ENABLE;//片选使能
|
||
Flash_WriteOneByte(Flash_ReadID);
|
||
Flash_WriteOneByte(0x00);
|
||
Flash_WriteOneByte(0x00);
|
||
Flash_WriteOneByte(0x00);
|
||
|
||
|
||
ID |= Flash_ReadOneByte() << 8;
|
||
ID |= Flash_ReadOneByte();
|
||
|
||
FLASH_CS_DISABLE;//片选失能
|
||
}
|
||
|
||
/*****************************************************************************
|
||
** 文件名称：void Read_w25q128_only_ID()
|
||
** 功 能：读唯一ID
|
||
** 修改日志：LiHong@2021.05.20
|
||
******************************************************************************/
|
||
void Read_w25q128_only_ID()
|
||
{
|
||
FLASH_CS_ENABLE;//片选使能
|
||
Flash_WriteOneByte(Flash_ReadID_only);
|
||
Flash_WriteOneByte(0x00);
|
||
Flash_WriteOneByte(0x00);
|
||
Flash_WriteOneByte(0x00);
|
||
Flash_WriteOneByte(0x00);
|
||
|
||
|
||
only_id[0] = Flash_ReadOneByte();
|
||
only_id[1] = Flash_ReadOneByte();
|
||
only_id[2] = Flash_ReadOneByte();
|
||
only_id[3] = Flash_ReadOneByte();
|
||
only_id[4] = Flash_ReadOneByte();
|
||
only_id[5] = Flash_ReadOneByte();
|
||
only_id[6] = Flash_ReadOneByte();
|
||
only_id[7] = Flash_ReadOneByte();
|
||
|
||
FLASH_CS_DISABLE;//片选失能
|
||
}
|
||
|