On 4/26/2015 10:20 PM, IVP wrote: > It can be frustrating sometimes as cards which work OK in 4- > bit mode simply refuse to initialise in SPI mode. I've tried many > brands and sizes of card with a simple PIC test circuit and don't > persist with those that won't initialise readily. I spent a lot of time > figuring out how to get a couple of these 'SPI reject' cards going, > but they needed quite different solutions, and it simply wasn't > worth the effort to do this for every one.When they do get going > in SPI mode though, they seem to be alright That has been my experience as well. If someone wants an SD card now I will only use a micro with a real SD interface. - Martin --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .