lpc1788 SD card  connection

Discussion created by lpcware Employee on Jun 15, 2016
Latest reply on Jun 15, 2016 by lpcware
Content originally posted in LPCWare by Imagineme on Tue Dec 04 03:30:41 MST 2012
I have the following question i`ve seen development  boards based on lpc1788 and all of them use SPI to access SD card when the MCU has sd card controller.I read that using four-bit SD bus is somehow closed licence and in order to use it i have to pay for i, my question is is that so and if yes can i use 1-bit SD bus for free(and where i can find code examples) or this  SD card controller is off limits (so to speak) for hobby electronics.