Week #12 – SD Cmds

I tested out the code I had already written and found out that the power up sequence was not working as expected. After consulting with my supervisor he advised me to enable pull-up resistors in port B and test the input and outputs for the each pin. By setting the Read more…

Week #11 – SD Comms

After adding the software SPI, I started out writing the program. There are four working modes in SPI and the SPI timings for Mode 0 is the proper setting for the SD Cards. After setting the mode I started defined the values for the commands that are to be used. Read more…

Week #10 – SPI Comms

I was still working on the SD card this week. I took up from where I left off and started with setting up the SD card. I soldered the pins onto the little board for holding the card. This board has a pre-made insertion point for the card and which Read more…