CCS/TM4C1294NCPDT: TM4C1294 USB stick not recognized

Phuong Hoang

Part Number: TM4C1294NCPDT
Other Parts Discussed in Thread: EK-TM4C1294XL

Tool/software: Code Composer Studio

Hi all,

I'm programming on TM4C1294NCPDT for read data.txt file.

But when I try with example usb_host_msc, Revision 2.1.4.178 of the EK-TM4C1294XL Firmware Package, just one of all USB device connected(via UART)

The remainning devices, it stuck in USBHCDPipeWrite function, at USBHCDPipeWrite, at line 1564 (Wait for a status change while(1)).

And, if USB device was plugged more than about 15 seconds, when I unplugged, the UART show: Mass storage device disconnected,otherwise it not.

I tried some solution, like this link: https://e2e.ti.com/support/microcontrollers/other/f/908/t/802112?tisearch=e2e-sitesearch&keymatch=USBHCDPipeWrite#pi320995=1

Kindly help us in debugging this issue.

Thanks you,

Phuong Hoang

over 6 years ago

0 Charles Tsai over 6 years ago

TI__Guru**** 191906 points

Hi Phuong,

In your picture I don't see you plug in any USB device to the USB "device" connector which is the one next the Ethernet RJ45 jack, the one on the top of your picuture. I only see a connection to the USB Debug Connector.

I just ran the example I don't see any problem. I can view the files stored in the USB flash stick. See below.

0 Phuong Hoang over 6 years ago in reply to Charles Tsai

Prodigy 170 points

Hi Charles,

I used TP5, TP6, GND and +5V pins to connect to the USB flash stick.

At the first picture, it stuck in while loop to wait for a status change, and I see RemainingBytes and Bytestosend is 31.

And in this thread: https://e2e.ti.com/support/legacy_forums/embedded/starterware/f/790/t/218742?tisearch=e2e-sitesearch&keymatch=USBHCDPipeWrite

Vineeth said:

"This seems to corner case which was missed in the code. The problem as the error code indicates, is because the device is not responding to the SCSI command ( 31 bytes )"

I don't know this error become from USB flash stick or TI USBlib.

Thanks you,

Phuong Hoang

0 Phuong Hoang over 6 years ago in reply to Phuong Hoang

Prodigy 170 points

Hi all,

I found reason of this issue.

After I format USB flash stick by SD formater, TM4C notice: Mass storage device connected.

I think Disk Formater of Windowns has issue.

Thanks all,

Phuong Hoang

Code Composer Studio™︎

Code Composer Studio forum

CCS/TM4C1294NCPDT: TM4C1294 USB stick not recognized