Project requirements are as follows:
Equipment is working, MCU through the SPI to write data, SD card access USB cable equipment automatic shutdown, the computer via USB cable read SD card,
SDIO turn USB with gen but GL823 (B) chip,

Question:
Equipment after shutdown, the computer via USB cable connection device, can't identify the SD card,

Phenomenon:
GL823 PMOS, AVDD and DVDD voltage is 3.3 V, peripheral LED light is normally on

Ever encountered this problem, meet you, thank you
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Author: Tim0215
Source: CSDN
Original: https://blog.csdn.net/Tim0215/article/details/90796720
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CodePudding user response:

Sd card to do the file system and format

CodePudding user response:

These operations are done