[TM4C123] SD card with SPI

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ExXec
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Joined: Sat Oct 20, 2018 4:02 pm

[TM4C123] SD card with SPI

Post by ExXec » Sat May 18, 2019 12:12 pm

Hey,

I want to implement SD card support, because I cannot dedicate flash for storage.

Do I implement this, by taking the functions from sdcard.c (STM32) and rewrite them with SPI or is there a simpler way?

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jimmo
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Re: [TM4C123] SD card with SPI

Post by jimmo » Sat May 18, 2019 12:35 pm

Sorry I don't have any specific advice but you might find the discussion on this PR useful -- https://github.com/micropython/micropython/pull/4772

ExXec
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Re: [TM4C123] SD card with SPI

Post by ExXec » Sat May 18, 2019 12:47 pm

So, they're saying, that micropython has the capability to use software sdcard support over the SPI module.

That prohibits the use of a boot.py then?

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Roberthh
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Re: [TM4C123] SD card with SPI

Post by Roberthh » Sat May 18, 2019 4:22 pm

If you look at the ESP8266 and ESP32 ports. They have the SDcard support in a driver called sdcard.py, which is a block device driver. But still the file system software (VFS, Fat) is in the firmware.

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