Problem with Android

lpcware — Wed, 15 Jun 2016 17:37:03 GMT

Content originally posted in LPCWare by khl7608 on Tue Apr 30 20:11:12 MST 2013

Hello,

I'm working on a project designing and developing an Android accessory with LPC1769. I used the Embedded Artists’ AOAA Kit board and had success with it. Now I need to build my own device with several similar components from the AOAA kit. So I recently got the LPC1769 LPCXpresso board and quick-tested with USB communications. This is where I am having troubles now.

I'm using the Embedded Artists' AndroidAccessory codes along with nxpUSBlib library. Debugging showed that the microcontroller detects my Nexus 7 when plugged in, but enumerating was not successful. I'm not sure why but I think maybe there is something wrong with the hardware? I am using the same resistors and capacitors as with the AOAA kit (15k pull-down resistors, 33 ohm resistors on data lines, etc)

Can someone help me solving this issue?

Let me know if you need anything else.

EDIT:

Okay, the error codes from during debugging are:

Dev Enum Error
-- Error Code 3 (HOST_ENUMERROR_ControlError)
-- Sub Error Code 2 (HOST_SENDCONTROL_PipeError)
-- In State 268435880

Looks like the issue is with the pipeline? I'm not sure how to fix it? Does anyone know how to solve this issue?

Re: Problem with Android

kshirsagaravina — Tue, 15 Dec 2020 12:38:28 GMT

hello

I am getting same problem as like you .can you please help me to find out this problem.share your experience suggestions on this .

thanks. https://community.nxp.com/t5/LPC-Microcontrollers/USB-Host-with-LPC-4088-Pendrive-configuration/td-p/1199354

topic Problem with Android in LPC Microcontrollers

Problem with Android

Re: Problem with Android