USB Host Enumeration problem

[Prakash Rajolli]

Hello,

I've never done a USB Host interface before, now I am trying to
enumerate USB Host using NXP's USBHostLite example using LPC1768
controller.

It stuck at "while (!HOST_RhscIntr);"

I got a short serial output followed by flashing

----------------------------
Initializing Host Stack
Host Initialized
Connect a Mass Storage device
-----------------------------

Can anybody tell me why

"LPC_USB->OTGStCtrl = 0x3;" statement is using. And if I use
"LPC_USB->OTGStCtrl = 0x203;" this statement then serial output is
followed as

------------------------------------
Initializing Host Stack
Host Initialized
Connect a Mass Storage device
ERROR: In Host_EnumDev at Line 358 - rc = -1
---------------------------------------------

The line (Line 358 in usbhost_lpc17xx.c) is this block of code:

rc = HOST_GET_DESCRIPTOR(USB_DESCRIPTOR_TYPE_DEVICE, 0, TDBuffer, 8);
if (rc != OK) {
PRINT_Err(rc);
return (rc);
}

Could it be an issue with my USB drive or hardware?

The schematic for usb host I have attached.


I have ensured that PORT_FUNC in OTGStCtrl register is 0x3, PWRD, PPWR, POVRCR, USB-D+ and USB-D- are set correctly for USB host in PINSELx.

Further observations are as follow,

1. It stuck at "while (!HOST_RhscIntr) ;" and If I not initialize UART, then get rc = -1 at
------------ --------- --------- --------- --------- --------- --------- ---
rc = HOST_GET_DESCRIPTOR (USB_DESCRIPTOR_ TYPE_DEVICE, 0, TDBuffer, 8);
if (rc != OK) {
PRINT_Err(rc) ;
return (rc);
}
------------ --------- --------- --------- --------- ----

because HOST_TDControlStatu s = 5.

2. Before setting of global power bit in OHCI RHStatus,
HcRhStatus = OR_RH_STATUS_ LPSC; /* Set Global Power */
voltage at PWRD pin is 4.68v and after setting of global power
PWRD = 0.8V
is it correct?

Many thanks in advance,

-Prakash
9886545216

 

[Gilmanov Ildar]

Hello! I have same problem in my board with LPC2478 from EmbeddedArtists. Interrupt Host_Isr do not occur. I don't know why. Do you solve your problem?

 

[Prakash Rajolli]

Hello,

Problem was resolved long back, need to check what was the issue. I will check and update you.

Meanwhile you can download the source code from 'Download' section of following link. It might be help to you.

https://coineltech.com/shop/product_info.php?currency=INR&products_id=50

 

[amir farhadi]

Hello,

Problem was resolved long back, need to check what was the issue. I will check and update you.

Meanwhile you can download the source code from 'Download' section of following link. It might be help to you.

https://coineltech.com/shop/product_info.php?currency=INR&products_id=50

pls relink .
it was damage

 

[Prakash Rajolli]

pls relink .
it was damage

You can refer this code bundle

www.coineltech.com/winzip/CodeBundle_1768HEx.zip


-Prakash

 

[amir farhadi]

You can refer this code bundle

www.coineltech.com/winzip/CodeBundle_1768HEx.zip


-Prakash

thanks a lot,
I am working with IAR and this is for keil , and it has some error in iar compiler .
can you give me a simple sample by iar?