My self designed PCB shows a strange behavior in reading the microSD memory card.
It seams to me like the USB connection is OK, because i was able to load the Bootloader and the midibox_NG app normally.
But now to configure my setup the memory seams to have a failure reading the microSD card. I have an idea that it cold be a problem with the Switch pins i didn’t mention in my design (they are al to GND).
The red pin connects to GND as soon a card is inserted. The two Blue pins close as soon the card is inserted without connecting to GND.
Did anybody ever see something similar like picture one shows?
Hi TK, first thanks for your answer. I tryed to format the sd card in MIOS 2.42 Comandline but unfortunately nothing happened. So i thaught i cold just remake the hole thing. I first connected the LPC Link and loaded the Bootloader in LPCXresso then loaded and configurated the MIOS Bootloader v1.011. So i had the “Bootloader is up to Date :-)” Screen show up on my Display. Then i Loaded the midibox_ng_v1_020 and tried to format the SDcard again. But it was the same as on my first attempt… The Display still shows “READY.” but LED2 on the LPC1769 Board goes out. And nothing happens. Im not sure if that is a Hardware issue… Maybe its also a Problem with the Size of my uSD card, its 8Gb (i had that laying around, but it may have a to large memory?)
Update: After Formatting the Card trough a Cardreader in “Festplattendienstprogramm from OSX” it loaded the .NGL file successful and it works now. -So there must be something wrong in the sdcard_format procedure…
