MSP432E401Y: USB Not Connecting to Computer

Daniel Cruz7

Part Number: MSP432E401Y

Hello, I recent obtained the MSP432E401Y launchpad. I have been successful in using the top usb to debug and flash the microprocessor. My issues deals with connecting to the USB near the ethernet jack. I flashed the launchpad with the USB demo software usbDevMouse however the USB is never connecting to the computer. Moreover I moved JP1 to the center pins and I still receive no power from powering through the USB. I connected both usbs to the computer to hopefully power with the debug usb and perform the software through the bottom one, however still my computer does not pick it up. I am running Windows 10.

Is there some extra step I am missing to unlock this functionality on my computer or are there any other jumpers I need to configure to receive power? Thank you.

over 6 years ago

0 Arthi Bhat1 over 6 years ago

TI__Expert 6760 points

Hi Daniel,

Are all the jumpers connected on the J101 block, especially the GNC, 5V and 3V jumpers. This jumper block provides the power to the USB section of the Launchpad. J1 block jumper can be either on the 5v-xds or 5v-otg.

If you are running the usbDevMouse example, then when you connect both the usb cables to the Windows 10 computer, the mouse should automatically move in a circle on the screen. If you don't see the mouse move can you tell me if you see the VID/PID of 0x1cb3 and 0x0002 in the HID section of Device Manager or LED D2 light up? What version of SDK did you download the example from?

Are you using CCS or IAR to download the example to the MSP432E401 device? After you download the example does the debugger stop at Main before you hit Run button?

Regards,

Arthi

0 Daniel Cruz7 over 6 years ago in reply to Arthi Bhat1

Prodigy 55 points

Hello Arthi

attached is the jumper setup for the launchpad. J101 have been left on. I should specify that I can power through the USB connected to the JTAG. The issue I have is centered towards the second USB on the bottom. Even with the J1 set in the middle for 5v-otg. I downloaded SDK version 2.30.00.14. When connected to the OTG USB there is no power, when connected to the JTAG USB for power and OTG USB for the software the only light that lights up is the powerlight near the JTAG port. I receive no confirmation that it attached to my computer, nothing shows up on the device manager other than the two ports for XDS110 from the JTAG USB. I ran the program with the debugger and the code hangs at while(!g_bConnected) loop. This leads me to believe that the computer is never recognizing the connection with the OTG USB port. I assume the drivers for the OTG USB port should automatically download to the system. Are there any additional steps to establishing a connection from the OTG USB port to the rest of the launchpad?

0 Arthi Bhat1 over 6 years ago in reply to Daniel Cruz7

TI__Expert 6760 points

There should be no other step required to get the usb example running except to connect up both the USB cables to the computer. Your hardware connections checkout.

Just so that I understand...when you connect up both the USB cables to your computer you only see the two ports for XDS110 in Device Manager and nothing else? Do you see anything like 'unknown device' in Device Manager?

Maybe you can try re-setting the board by pressing the reset button (Reset_SW1).

Regards,
Arthi

0 Daniel Cruz7 over 6 years ago in reply to Arthi Bhat1

Prodigy 55 points

I looked through my device manager and I could not see any new changes from connecting to the otg-USB. All I receive are the two XDS110 ports when I try to power through the jtag-USB. No unknown devices. I clicked reset_SW1 on the board and nothing changed.

0 Arthi Bhat1 over 6 years ago in reply to Daniel Cruz7

TI__Expert 6760 points

Well, maybe you have a bad board. Can you at least get the blinky example working? You can download the example from here

Blinky_Example

What operating system are you connecting the device to?

Regards,

Arthi

0 Daniel Cruz7 over 6 years ago in reply to Arthi Bhat1

Prodigy 55 points

I'm running on a Windows 10 O.S. Blinky flashed correctly and is working fine. All the issues seem to be only relate to the otg-USB. Everything else seems operational.

0 Arthi Bhat1 over 6 years ago in reply to Daniel Cruz7

TI__Expert 6760 points

Well, you might just have a bad board. The Blinky example does not use the USB stack. I just wanted to make sure that the power from the XDS110 USB connection was coming through to the device side of the board. The USB part of the board might not be working properly. Maybe the crystal is bad. It is surprising that after you downloaded the mouse example and you connected up both the USB cables (XDS110 USB and OTG-USB) to the Windows 10 that you see only the XDS110 ports in Device Manager and nothing of the HID mouse under either the Other section or HID section of Device Manager.

Maybe you can try downloading some other USB device side example like this one:

MSP432E4_Device_Keyboard

Regards,

Arthi

0 Daniel Cruz7 over 6 years ago in reply to Arthi Bhat1

Prodigy 55 points

I've tried with the the keyboard device example and I still receive the same error. The program hangs on while(!g_bConnected) loop. What are the steps I can take to get my board replaced?