I want to store data on two microSD cards using the spresense expansion board.

Asked 2 years ago, Updated 2 years ago, 95 views

Sony Official Home Page - spresense Hardware Design Deck - This is a question after looking at the spresense expansion board schematic.
Is it possible to store data on two microSD cards by soldering the microSD connector on the surface mounting part of the expansion board (Side-B) cn5?Also, if possible, please let me know if there is a sample program. The development environment is Arduino IDE.

spresense expansion board schematic (partial excerpt)

spresense arduino

2022-09-30 10:27

1 Answers

TXS02612 has two interface outputs.One is memory card interface such as SD card, and the other is SDIO interface such as WiFi/BT.SEL will choose which interface to use.

Therefore, I don't think you can use two SD cards at the same time.

SEL seems to be connected to SPR_AP_CLK (maybe as GPIO?), so if you want to connect to WiFi without using an SD card, you can connect the communication module through CN5 by changing the SPR_AP_CLK.

TXS02612 Block Diagram

2022-09-30 10:27

If you have any answers or tips

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