R0.1A）时，f_mount返回值为0，SD卡初始也成功,但是在调用f_open却返回12(FR_NOT_ENABLED),打算...
printf("rnopen file %x", fr);} } 程序输出：USB Device Attached ENUM_IDLE find usb ID: 5567...
FR_WRITE_PROTECTED 在存储介质被写保护的情况下,以写模式打开或创建文件对象。 FR_DISK_ERR 由于底层磁盘I/O接口函数中的一个错误,而导致该函数失败。 FR_INT_ERR 由于一个错误的FAT结构或一个内部错误,而导致该函数失败。 FR_NOT_ENABLED 逻辑驱动器没有工作区。 FR_NO_FILESYSTEM 磁盘上没有有效地FAT卷。
enFatResult = f_open(&stcFp0, Current_text, FA_WRITE | FA_OPEN_ALWAYS | FA_CREATE_ALWAYS); //这里返回值是 FR_NOT_ENABLED enFatResult = f_write(&stcFp0,m_au8SdcardTxBuf0,512,&u32WrCount0); enFatResult = f_close(&stcFp0); if(enFatResult != FR_OK) while(1); 不知道何原因...
I am trying to open my SD card, create a TXT file on it and close it. However, f_open always returns FR_WRITE_PROTECTED. This is weird since FF_FS_READONLY is defined as 0, which means read/write is enabled. I am using a MicroSD ...
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Additionally, the extract which was the most abundant with phenolic compounds (A2) was not the most active. The reason for this might lie in some differences in the com- position which could not be detected through the applied methods, and in the fact that non-phenolic constituents Scientific...
1. A new record is not pending on the business component. You can use np (new record pending) as an abbreviation for bNewRecPending. bNotifyEnabled Returns a Boolean value that includes one of the following values: 0. The business component is not enabled for notifications. 1. The...
我在做SD卡和U盘挂载的时候遇到的问题记录: 第一个问题 首先我定义了一个文件系统的指针数组和实际存在的结构体,然后对指针数组进行了内存申请,在这里我用的是U盘,设置磁盘为0, 当我使用f_mount挂载fatFs后,再卸载,然后挂载FatFs,显示的是挂载成功,但是实际上当我去对文件进行操作的时候,返回FR_NOT_ENABLED,也...