LPC MicrocontrollersのトピックRe: USB Host example errors for LPC17xx

USB Host example errors for LPC17xx

felipeavila — Thu, 16 Nov 2017 12:31:58 GMT

Hello, i'm trying to run USB Host code example provided by NXP for LPC17xx.
I have LPC1768 and I'm using the mass storage example.
I already check my board, it doesn't matter what I do I always get an error returning from "USBH_MSC_DriveGetMediaStatus" function.
USBH_Initialize returns OK.

The USB led works great, when I put a pendrive it blinks and thn stays On, and the opposite when flashdrive is removed.
Does anyone have an idea?

Re: USB Host example errors for LPC17xx

felipeavila — Fri, 17 Nov 2017 15:58:14 GMT

The error is 33 : usbDeviceError

But the USB Led is ON! Indicating that the device is detected!

Re: USB Host example errors for LPC17xx

jeremyzhou — Thu, 23 Nov 2017 08:22:42 GMT

Hi Felipe Avila,

Thank you for your interest in NXP Semiconductor products and 

for the opportunity to serve you.

I was wondering if you can share compile-able demo, then I can replicate the issue on my site.

I'm looking forward to your reply.

Have a great day,
TIC
 
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Re: USB Host example errors for LPC17xx

felipeavila — Thu, 23 Nov 2017 11:27:43 GMT

Hi jeremyzhou‌ !

The example I've tested is exactly the same provided in Keil MDK5 (can be found in this software pack MDK5 - Keil MCB1700 ).

I found online another code, from uVision 4, and this one works better, what eliminates any hardware issue possibilities.

Thank you!