1、问题描述 使用FAT32 f_write 多次执行写操作时,会报FR_DISK_ERR错误,而且是刚开始写不报错,写几次后会一直报错。 设断点跟踪到HAL_SD_WriteBlocks中,在调用SDMMC_CmdWriteMultiBlock时,会报SDMMC_ERROR_TX_UNDERRUN,意思 是Transmit FIFO underrun 2、原因分析 如下图所示,SDMMC开始写操作时,首先要将数据写...
I am converting 90 float values to char string at a time in a for loop and the char string is being passed to f_write() to write on sdcard. It is writing to sdcard also but sometime f_write is failing with FR_DISK_ERR putting me vulnerable to miss data. ...
我用F4做录音器，也遇到类似的问题，就是连续写SD卡的时候，很容易出现FR_DISK_ERR错位。后来把写扇区...
FR_DENIED:由于文件是以非写模式打开的,而导致该函数被拒绝。FR_DISK_ERR:由于底层磁盘I/O函数中的错误,而导致该函数失败...后,无论结果如何,数值都是有效的。返回值:FR_OK (0):函数成功。FR_DENIED:由于文件是以非读模式打开的,而导致该函数被拒绝。FR_DISK_ERR:由于底层磁盘I/O函数中的...
=f_write(&fnew, (char*)&data, sizeof(int), &bw); 但是跑了几百个中断后,函数返回值就会变成FR_DISK_ERR(A hard error chunchristy2019-10-23 08:20:26 STM32F407用CubeMX创建SDIO+FatFs,f_Open失败 ();}else{/*Writedata to the text file */res =f_write(&SDFile, wtext, sizeof(wtext...
出现的问题:f_open函数返回值为FR_DISK_ERR...()、disk_status()、disk_read()、disk_write()这几个函数6将FILfil; 从函数外拿出,定义为全局变量,即可解决。 7 确保f_mount已经挂载上了,返回值是正确的。确保硬件 智能推荐 layui的layer第一次加载为空白页面,第二次打开才能正常显示内容...
if (!_FS_READONLY && wmode && (stat & STA_PROTECT)) /* Check disk write protection...
STM32F750 + USB Host + FATFS return FR_DISK_ERR in STM32 MCUs Embedded software 2022-12-23 STM32F1(STM32F103RCT6) Stm32CubeIDE fatfs sdio sdcard always returns FR_DISK_ERR in STM32 MCUs Embedded software 2021-10-14 STM32 SDIO 1 bit + DMA double writes (also 4...
res=f_open(&file,FN,FA_WRITE|FA_CREATE_ALWAYS);if(res==FR_OK){ for(j=0;j<Bytes/512;j...
return ( FR_DISK_ERR) ; } if (fmt){ return ( FR_NO_FILESYSTEM) ; /* No FAT volume is found */ } What's wrong now? Is it possible that the root of the problem is my 8GB SDHC card? Is it too much...