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Compiler/TM4C1294KCPDT: Pen drive not detected

Anushka Parab21
Intellectual 700 points
Part Number: TM4C1294KCPDT
Other Parts Discussed in Thread: EK-TM4C1294XL

Tool/software: TI C/C++ Compiler

I have downloaded fatsdusbcopy_EK_TM4C1294XL_TI_TivaTM4C1294NCPDT to copy files from SD card to pen drive.

 

Example code is working properly in EK-TM4C1294XL launch pad.

But in my custom board pen drive is not detected.

I have checked SD card interface it is ok

 

if (!USBMSCHFatFs_waitForConnect(usbmschfatfsHandle, 10000)) {

       System_abort("No USB drive present, aborting...\n");

   } function time out occurs

 

Connection as follows

Pend drive

1-  + 5V

2-  USB0DM

3-  USB0DP

4-  GND

Also USB0VBUS +5V is connected and USB0ID GND is connected.

I also tried 10K pull down resistor to D+ and D- even then pen drive is not detected.

 

Does some thing requires in hardware?

 

Please guide us.

Regards,

 

 

  • 0
    TI__Guru*** 135355 points

    Hello Anushka,

    There isn't really a lot of detail here for me to work with... from what I can tell, this worked for your example on our EVM but now your custom PCB is not seeing the USB drive?

    Can you maybe run the basic TI example code for USB drive on the PCB? That could help you debug by limiting what is being used.

    From a hardware concern standpoint, I would recommend reviewing our System Design Guidelines to see if you can identify missed in your system design: www.ti.com/.../spma056