SDCard support?

[ArcheyChen]

Hello, this is a nice project, I wonder if there is a plan to add SD card r/w support?

https://www.bilibili.com/video/BV1gH4y1m7ty/?vd_source=1af828ff5df4e67b0feb279fa0ee5cbf

I saw a video that using link cable to connect a sd card, it will be really useful for some hb to read external data.

[afska]

Hey! No plans for SD card via Link Port, sorry. But you may want to check out gba-flashcartio, a library that allows reading the SD card in a flash cartridge (EverDrive GBA and EZ Flash Omega).

[ArcheyChen]

Hey! No plans for SD card via Link Port, sorry. But you may want to check out gba-flashcartio, a library that allows reading the SD card in a flash cartridge (EverDrive GBA and EZ Flash Omega).

I just want to write a lib for bootleg carts, they can be reflash now, but don't have external storage.
I'm not very good at embedding systems, but is the LinkSPI in your project, theoretically, can direct connect to sd card, and I just need to write sd specific lib myself?

And is there any doc how to connect a SPI device via linkport?

[afska]

I'm not very good at embedding systems, but is the LinkSPI in your project, theoretically, can direct connect to sd card, and I just need to write sd specific lib myself?

Yes, LinkSPI can help you, but keep in mind that you might need to set some registers to use the SD card in SPI mode 3 (CPOL=1, CPHA=1) which is what GBA hardware uses.

And is there any doc how to connect a SPI device via linkport?

This example illustrates how to connect a Link Cable to a Raspberry Pi's SPI pins:

https://github.com/afska/gba-remote-play?tab=readme-ov-file#normal-mode--spi

[afska]

I'm closing this issue as it doesn't involve coding on the gba-link-connection side, but feel free to continue commenting here if you have more questions and I'll try to answer them!