easyflash 读取变量速度

发布于 2022-10-28 11:00:18 浏览：582 订阅该版

**硬件环境：**
- STM32F407  
- SPI3
- W25Q128

**软件环境：**
- rtthread 4.0.5
- easyflash 4.1.99
- spi3 无DMA 模式

**软件配置**
FAL 配置：
```
#define FAL_PART_TABLE                                                               \
{                                                                                                                          \
/*    {FAL_PART_MAGIC_WROD, "bootloader", "onchip_flash_16k",  0 , FLASH_SIZE_GRANULARITY_16K , 0}, */\
/*    {FAL_PART_MAGIC_WROD, "param",      "onchip_flash_64k",  0 , FLASH_SIZE_GRANULARITY_64K , 0}, */\
    {FAL_PART_MAGIC_WROD, "app",        "onchip_flash_128k", 0 , FLASH_SIZE_GRANULARITY_128K, 0}, \
    {FAL_PART_MAGIC_WROD, "easyflash",  SPI_FALSH_NAME,            0 ,          1024 * 1024, 0},                   \
    {FAL_PART_MAGIC_WROD, "download",   SPI_FALSH_NAME,            1024 * 1024 , 1024 * 1024, 0},                   \
    {FAL_PART_MAGIC_WROD, "filesystem", SPI_FALSH_NAME,            2048 * 1024 , 13 * 1024 * 1024, 0},             \
}
#endif /* FAL_PART_HAS_TABLE_CFG */
```

easyflash 配置：
```

/* ENV area size. It's at least one empty sector for GC. So it's definition must more then or equal 2 flash sector size. */
//#define ENV_AREA_SIZE             (EF_ERASE_MIN_SIZE * 128) /* default is the double erase min size */
#define ENV_AREA_SIZE             (EF_ERASE_MIN_SIZE * 64) /* default is the double erase min size */
```
 
rtconfig.h
```

#define PKG_USING_EASYFLASH
#define PKG_EASYFLASH_ENV
#define PKG_EASYFLASH_ERASE_GRAN 4096
#define PKG_EASYFLASH_WRITE_GRAN_1BIT
#define PKG_EASYFLASH_WRITE_GRAN 1
#define PKG_EASYFLASH_START_ADDR 0
#define PKG_EASYFLASH_DEBUG
#define PKG_USING_EASYFLASH_LATEST_VERSION
#define PKG_EASYFLASH_VER_NUM 0x99999

#define RT_USING_SPI
#define RT_USING_SFUD
#define RT_SFUD_USING_SFDP
#define RT_SFUD_USING_FLASH_INFO_TABLE
#define RT_SFUD_SPI_MAX_HZ 50000000   //spi 挂载的时候速度
```
**问题现象：**
再系统开机的时候，需要读取大量的参数配置字。
每次读取使用 ef_get_env_blob 函数来读取。 
开机后每个环境变量的读取**时间大概是1S少一点点的时间。**

读取日志：
```
[7703] I/app.public: Read meterType from flash ok,value:1, 1,1,1.
[8163] I/app.public: Read use3pAs1p from flash ok,value:0, 1,1,1.
[10461] I/app.public: Read ethDhcp from flash ok,value:1, 1,1,1.
[10700] I/app.public: Read ethIP from flash ok,value:33597632, 4,4,4.
[10939] I/app.public: Read ethMask from flash ok,value:16777215, 4,4,4.
[11180] I/app.public: Read ethGW from flash ok,value:16820416, 4,4,4.
```
问题是有没有办法来提高这个读取的速度？