I am working on a clickBoard with MC60 A GSM module from MikroEletronika company.
This clickBoard has two slots: (1) one for SIM card and another (2) for micro SD cards. I have read all the available documentation: AT commands user guide manual (Quectel documentation) and some code examples (Libstock) and i still cannot find any information about how can I communicate with SD card slot.
The only thing I've found about this topic was on quectel hardware guide:
The following are the main features of SD card interface: - Only supports 1bit serial mode; Not support the SPI mode for SD memory card - No support multiple SD memory cards - No support hot plug; The data rate up to 48MHz in serial mode - Support for memory cards with maximum capacity up to 32GB;
From this I assume it is a serial communication. So, with the info I know, the two questions I have are:
Can I write/read bytes with the usage of AT commands? If yes, which AT commands?
It is necessary any specific format for micro SD card (FAT, exFAT, FAT32 or NFTS)?