solid on indicating the sd card is scanning but nothing happens. It always remains on solid when there are no files on the card.
Any assistance would be greatly appreciated.
After powering up and without a card inserted, there should be 3.3v on pins 9, 1, 4, 8 and 2.5v (depending on your meter impedance) on pins 2, 5, 7 of the SD card socket. Note the unusual numbering of the SD card socket.
Your assumption that the card is stuck trying to read is logical.
I would try another card or reformat with SD Formatter https://www.sdcard.org/downloads/formatter_4/
Many different types just show FAT as the file system so you cant be shure its correct (most 2Gb ones are normally OK though)
If you connect to the CONTROL port at 57600,n,8,1,noflow it might give some more info, but probably not when the LED is on solid.
It was one I knew didn't work from the early tests, I bought 10 different brands of 2Gb SD cards and all worked fine. (Didn't have to reformat any either)
The 32Mb one was just found in a draw probably from an old phone. Unusual for a 2Gb one to play up.
Thanks for the correct info Brian
Let us know how you get on Wayne.
exist in the farnell 10 socket between digilite and the sd card adaptor. I shall go into the city on the
weekend and purchase a different socket and also a second sd card. I shall advise of progress.
The problem was eventually tracked to a faulty SD card socket.
As I build it on veroboard I replaced the suggested farnell socket with the
719-8744 from RS. This has a more definite switching action when the card is inserted.
It however must be installed upside down so that the pins line up with the farnell one.
Who is online
Users browsing this forum: No registered users and 1 guest