USB CDC host

Posted on November 30, 2017 at 13:20

Hello,

The above issue is resolved it was Vbus was not powered. 

below are the debug traces.

$DBG001:2 USB: interface started ...0<CR><LF>

$DBG001:2 USB: Init Host USB...<CR><LF>

$DBG512:2 Init_HostUSB: Initialise Host USB<CR><LF>

$DBG001:2 USB: handle 4 (USR_CONNECTION)<CR><LF>

$DBG001:2 MainTask: set mainstate 6<CR><LF>

$DBG000:3 USBH_Process: HOST_IDLE<CR><LF>

$DBG000:3 USB: Device Attached<CR><LF>

$DBG000:3 USB: PID: 1102h<CR><LF>

$DBG000:3 USB: VID: 1546h<CR><LF>

$DBG000:3 USB: Address (#1) assigned<CR><LF>

$DBG000:3 USB: Manufacturer : u-blox<CR><LF>

$DBG000:3 USB: Product : u-blox Wireless Module<CR><LF>

$DBG000:3 USB: Serial Number : 357520071065649<CR><LF>

$DBG000:3 USB: Enumeration done<CR><LF>

$DBG000:3 USB: Device has only one configuration<CR><LF>

$DBG000:3 USB: Default configuration set<CR><LF>

$DBG000:3 USB: Interface: 2/2/1 (if:0/0, 1)<CR><LF>

$DBG000:3 USB: Interface: 10/0/0 (if:1/0, 2)<CR><LF>

$DBG000:3 USB: Interface: 2/2/1 (if:2/0, 1)<CR><LF>

$DBG000:3 USB: Interface: 10/0/0 (if:3/0, 2)<CR><LF>

$DBG000:3 USB: Interface: 2/2/1 (if:4/0, 1)<CR><LF>

$DBG000:3 USB: Interface: 10/0/0 (if:5/0, 2)<CR><LF>

$DBG000:3 USB: Interface: 2/2/1 (if:6/0, 1)<CR><LF>

$DBG000:3 USB: Interface: 10/0/0 (if:7/0, 2)<CR><LF>

$DBG000:3 USB: Switching to Interface (#0)<CR><LF>

$DBG000:3 USB: Class : 2h/2h/1h<CR><LF>

$DBG000:3 USB: Using data interface (#1)<CR><LF>

$DBG000:3 USB: CDC class started<CR><LF>

$DBG001:3 USB: handle 3 (USR_CLASS_SELECTED)<CR><LF>

Now the issue is I always receive status as USBH_BUSY in HOST_CLASS_REQUEST state inside  USBH_Process() function

.

How to resolve this issue?

Why is the status shown busy?

if I receive ok only then it will change state to HOST_CLASS & communication can be started.

Regards

Pramod

Posted on January 05, 2018 at 10:18

Hello All,

The issue is solved it was heap memory issue. I increased the heap size now it is working. I can send & receive data over USB.

$DBG000:3 USBH_Process: HOST_IDLE<CR><LF>

$DBG000:3 USB: Device Attached<CR><LF>

$DBG000:3 USB: PID: 1102h<CR><LF>

$DBG000:3 USB: VID: 1546h<CR><LF>

$DBG000:3 USB: Address (#1) assigned<CR><LF>

$DBG000:3 USB: Manufacturer : u-blox<CR><LF>

$DBG000:3 USB: Product : u-blox Wireless Module<CR><LF>

$DBG000:3 USB: Serial Number : 357520071065649<CR><LF>

$DBG000:3 USB: Enumeration done<CR><LF>

$DBG000:3 USB: Device has only one configuration<CR><LF>

$DBG000:3 USB: Default configuration set<CR><LF>

$DBG000:3 USB: Switching to Interface (#0)<CR><LF>

$DBG000:3 USB: Class : 2h/2h/1h<CR><LF>

@USBH_CDC_ClassInit: CDC_Handle->CommItf.NotifPipe &&&&&&&&&&&&&& 2<CR><LF>

$DBG000:3 USB: Using data interface (#1)<CR><LF>

$DBG000:3 USB: CDC class started<CR><LF>

@USBH_CDC_ClassRequest: HOST_USER_CLASS_ACTIVE status USBH_OK 0<CR><LF>

@HOST Class request succesfull<CR><LF>

Regards

Pramod