制作STM32F429的SPI FLASH下载算法

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发布于 2020-07-13 16:59:58

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发布于 2020-07-13 16:59:58

文章被收录于专栏：AIoT开源项目分享AIoT开源项目分享

下载算法的模版在keil安装目录\ARM\Flash下的_Template文件夹，把此文件夹复制出来，进行修改。也可以自行修改此工程名。

打开此工程，选择自己的芯片类型：

添加W25QXX的驱动代码：去正点原子的论坛下载STM32F29的寄存器工程，拷贝出HARDWARE文件夹下的SPI和W25QXX驱动，和SYSTEM文件夹。

添加W25QXX的驱动

4.修改FlashDev.c代码：

#include "FlashOS.H"        // FlashOS Structures


struct FlashDevice const FlashDevice  =  {
   FLASH_DRV_VERS,             // Driver Version, do not modify!
   "STM32F429_W25QXX",           // Device Name 
   EXTSPI,                     // Device Type
   0x90000000,                 // Device Start Address
   0x01000000,                 // Device Size in Bytes (16M)
   4096,                       // Programming Page Size
   0,                          // Reserved, must be 0
   0xFF,                       // Initial Content of Erased Memory
   1000,                        // Program Page Timeout 100 mSec
   3000,                       // Erase Sector Timeout 3000 mSec

// Specify Size and Address of Sectors
   0x001000, 0x000000,         // Sector Size  4kB (8 Sectors)
   SECTOR_END
};

5.修改FlashPrg.c代码：

#include "FlashOS.H"        // FlashOS Structures
#include "sys.h"
#include "delay.h"
#include "w25qxx.h"
#include "spi.h"
#include "usart.h" 

#define PAGE_SIZE            4096
/* 
   Mandatory Flash Programming Functions (Called by FlashOS):
                int Init        (unsigned long adr,   // Initialize Flash
                                 unsigned long clk,
                                 unsigned long fnc);
                int UnInit      (unsigned long fnc);  // De-initialize Flash
                int EraseSector (unsigned long adr);  // Erase Sector Function
                int ProgramPage (unsigned long adr,   // Program Page Function
                                 unsigned long sz,
                                 unsigned char *buf);

   Optional  Flash Programming Functions (Called by FlashOS):
                int BlankCheck  (unsigned long adr,   // Blank Check
                                 unsigned long sz,
                                 unsigned char pat);
                int EraseChip   (void);               // Erase complete Device
      unsigned long Verify      (unsigned long adr,   // Verify Function
                                 unsigned long sz,
                                 unsigned char *buf);

       - BlanckCheck  is necessary if Flash space is not mapped into CPU memory space
       - Verify       is necessary if Flash space is not mapped into CPU memory space
       - if EraseChip is not provided than EraseSector for all sectors is called
*/


/*
 *  Initialize Flash Programming Functions
 *    Parameter:      adr:  Device Base Address
 *                    clk:  Clock Frequency (Hz)
 *                    fnc:  Function Code (1 - Erase, 2 - Program, 3 - Verify)
 *    Return Value:   0 - OK,  1 - Failed
 */
uint8_t aux_buf[PAGE_SIZE];
uint32_t base_adr;
int Init (unsigned long adr, unsigned long clk, unsigned long fnc) {

  /* Add your Code */
    Stm32_Clock_Init(360,25,2,8);//设置时钟,180Mhz
    delay_init(180);            //初始化延时函数 
    //uart_init(90,115200);     //初始化串口波特率为115200
    W25QXX_Init();              //W25QXX初始化
    return (0);                                  // Finished without Errors
}


/*
 *  De-Initialize Flash Programming Functions
 *    Parameter:      fnc:  Function Code (1 - Erase, 2 - Program, 3 - Verify)
 *    Return Value:   0 - OK,  1 - Failed
 */

int UnInit (unsigned long fnc) {

  /* Add your Code */
  return (0);                                  // Finished without Errors
}


/*
 *  Erase complete Flash Memory
 *    Return Value:   0 - OK,  1 - Failed
 */

int EraseChip (void) {

  /* Add your Code */
    W25QXX_Erase_Chip();
  return (0);                                  // Finished without Errors
}


/*
 *  Erase Sector in Flash Memory
 *    Parameter:      adr:  Sector Address
 *    Return Value:   0 - OK,  1 - Failed
 */

int EraseSector (unsigned long adr) {

  /* Add your Code */
    W25QXX_Erase_Sector((adr-base_adr)/4096);
  return (0);                                  // Finished without Errors
}


/*
 *  Program Page in Flash Memory
 *    Parameter:      adr:  Page Start Address
 *                    sz:   Page Size
 *                    buf:  Page Data
 *    Return Value:   0 - OK,  1 - Failed
 */

int ProgramPage (unsigned long adr, unsigned long sz, unsigned char *buf) {

  /* Add your Code */
    W25QXX_Write_NoCheck(buf,adr-base_adr,sz);
  return (0);                                  // Finished without Errors
}
/*
 *  Blank Check Checks if Memory is Blank
 *    Parameter:      adr:  Block Start Address
 *                    sz:   Block Size (in bytes)
 *                    pat:  Block Pattern
 *    Return Value:   0 - OK,  1 - Failed
 */

int BlankCheck (unsigned long adr, unsigned long sz, unsigned char pat) {

    return (1);                                        /* Always Force Erase */
}
unsigned long Verify      (unsigned long adr,   // Verify Function
                           unsigned long sz,
                           unsigned char *buf)
{
        return 0;//直接返回0，表示成功                             
}

6.编译后将xxx.FLM拷贝到…\Keil_v5\ARM\Flash目录