kodera2tIt will be ultra nice if this card could be programmed through SD card interface. Indeed SD card interface has a definition of "iSDIO" which is different from general storage access, and I imagine and guess if appropriate driver is developed in OS level, direct programming (without USB-TTL) will be implemented. But this implementation is completely out of my capability. So, if you are familiar with iSDIO and know well how to make OS level driver, please help to implement it.
Actually, developing general iSDIO driver is quite useful not only for SDuino but also all general SD card in order to bring out its capability, and I believe it is worth to do. Of course the driver implementation does not have any bind with SDuino but the developer has its own copyright and if needs it can be sold in consideration of its usefulness.
You can try the implementation as a separate project in hackaday.io but if it is better, I would like to "invite new contributor". Please let me know..
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did you ever have any luck with this
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Unfortunately, no.. I know it is not easy because firstly special device driver in order to make SD card interface chip to talk iSDio command (actually it is SPI). But now I have another choice, direct USB support by Atmel SAMD chip. Still I need a interface converter (inside it, just wiring USB connecter to SD card socket, without any chip) but it does not need any driver development. Anyway thank you for your interest!!
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