elm fatfs读写问题求助

发布于 2021-10-20 15:21:03 浏览：837 订阅该版

stm32 （rtt4.0.2）挂载w25q64识别、格式化成功，mkdir能成功，但open和rmdir都会报错，求助，谢谢。
似乎直接sf write显示是成功的，但实际没写入。
```
msh />sf probe spi20
[32m[I/SFUD] Find a Winbond flash chip. Size is 8388608 bytes.[0m
[32m[I/SFUD] sf_cmd flash device is initialize success.[0m
[32m[I/SFUD] Probe SPI flash sf_cmd by SPI device spi20 success.[0m
8 MB sf_cmd is current selected device.
msh />
msh />sf bench
DANGER: It will erase full chip! Please run 'sf bench yes'.
msh />
msh />sf bench yes
Erasing the sf_cmd 8388608 bytes data, waiting...
Erase benchmark success, total time: 21.427S.
Writing the sf_cmd 8388608 bytes data, waiting...
Write benchmark success, total time: 33.125S.
Reading the sf_cmd 8388608 bytes data, waiting...
Read benchmark success, total time: 48.022S.

msh />echo "1"  1.txt
open file:1.txt failed!

Directory /:
13                  <DIR>

msh />rm 13
cannot remove '13': Is a directory
msh />echo "hello rt-thread!!!"  
hello rt-thread!!!

msh />sf write 0x3000 0x53 0x46 0x55 0x44
Write the sf_cmd flash data success. Start from 0x00003000, size is 4.
Write data: 83 70 85 68 .
msh />
msh />sf read 0x3000 16
Read the sf_cmd flash data success. Start from 0x00003000, size is 16. The data is:
Offset (h) 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
[00003000] 00 00 00 00 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F .......
```

2 个回答

出出啊 2021-10-20

恃人不如自恃，人之为己者不如己之自为也

悟_空 2021-10-20

这家伙很懒，什么也没写！

悟_空 2021-10-20

这家伙很懒，什么也没写！

出出啊 2021-10-20

恃人不如自恃，人之为己者不如己之自为也

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追加回复

hfmm 2021-10-20

这家伙很懒，什么也没写！

悟_空 2021-10-20

这家伙很懒，什么也没写！

hfmm 2021-10-20

这家伙很懒，什么也没写！

悟_空 2021-10-21

这家伙很懒，什么也没写！

sf erase后再sf write可以，如果不先erase会显示写入成功，但实际未成功。用的是spi接口，驱动指的是与spi连接的针脚配置不对吗

代码-含rtthread：
if(hspi->Instance == SPI2) {
        __HAL_RCC_SPI2_CLK_ENABLE();
        __HAL_RCC_GPIOB_CLK_ENABLE();

/**SPI2 GPIO 配置
        PB13     -------> SPI2_SCK
        PB14     -------> SPI2_MISO
        PB15     -------> SPI2_MOSI
        */

GPIO_InitStruct.Pin = GPIO_PIN_13 | GPIO_PIN_15;
        GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
        GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
        HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);

GPIO_InitStruct.Pin = GPIO_PIN_14;
        GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
        GPIO_InitStruct.Speed = GPIO_NOPULL;
        HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);

}
    
代码-裸系统，可实现文件的正常读写

void SPI2_Init(void)
{
 	GPIO_InitTypeDef GPIO_InitStructure;
  SPI_InitTypeDef  SPI_InitStructure;

RCC_APB2PeriphClockCmd(	RCC_APB2Periph_GPIOB, ENABLE );//PORTBÊ±ÖÓÊ¹ÄÜ 
	RCC_APB1PeriphClockCmd(	RCC_APB1Periph_SPI2,  ENABLE );//SPI2Ê±ÖÓÊ¹ÄÜ 	
 
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13 | GPIO_Pin_14 | GPIO_Pin_15;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;  //PB13/14/15¸´ÓÃÍÆÍìÊä³ö 
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_Init(GPIOB, &GPIO_InitStructure);//³õÊ¼»¯GPIOB

GPIO_SetBits(GPIOB,GPIO_Pin_13|GPIO_Pin_14|GPIO_Pin_15);  //PB13/14/15ÉÏÀ

SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;  
	SPI_InitStructure.SPI_Mode = SPI_Mode_Master;		
	SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;		
	SPI_InitStructure.SPI_CPOL = SPI_CPOL_High;		
	SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge;	
	SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;		
	SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_256;		
	SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;	
	SPI_InitStructure.SPI_CRCPolynomial = 7;	
	SPI_Init(SPI2, &SPI_InitStructure);  
 
	SPI_Cmd(SPI2, ENABLE); 
	
	SPI2_ReadWriteByte(0xff);

}