@Xelhion,
USBID pin is assigned to port pin RF3(Peripheral Pin Select number
of this pin is RP16). You can internally pull up this USBID pin by using
internal pull up enable Register CN2PU. That is, you have to set BIT0 of
CN2PU register. and make sure that application layer doesn't change CN2PU
register or atleast its BIT0. By doing this, the USBID pin will be pulled
up to (VDD-1.1V) as mentioned in PIC24FJ256DA206 controller datasheet page
no 163.
If you find this doesn't work, then you have to manually pull the
USBID line up by using an external pull up resistor. One end of the
resistor should be connected to 3.3V and the other end is connected to
USBID pin. This is bit risky, because, you need to find the USBID track in
the PCB that goes from the USB MicroAB Receptacle to PIC24FJ256DA206. And
don't connect the other end of the Resistor directly to Microcontroller's
RF3 pin. This may cause false trigger to the near by pins.
On Thursday, 2 January 2014 09:54:30 UTC+5:30, xelhion wrote:
>
> Excuse me but I am having the same issue, can you please post a picture of
> what you did? I cannot seem to visualize how you pulled up the USB ID.
> Thanks in advance.
>
> On Monday, November 25, 2013 3:17:51 AM UTC-8, gopi natarajan wrote:
>>
>> Hi ytai. I hope i have fixed this Issue.
>>
>> As per the IOIO-OTG firmware, USB stack has been initialized twice. That
>> is, Bootloader initializes USB Device stack at the beginning if Boot pin is
>> grounded. Else, the control jumps to Application part where USB OTG Stack
>> been initialized. During this OTG Initialization, i found that my USBID pin
>> floats and initializes the OTG stack randomly in USBDeviceTasks() function.
>> For this, i pulled the USBID line up using 3.3v pin via 10K resistor. Now
>> the board enumerates fine in device mode and i can execute HelloIOIOSwing
>> and Console applications without any error.
>>
>> I can even connect OTG board with android device with my external pull up
>> in my USB ID pin. Now every thing works fine.
>>
>> On Monday, 25 November 2013 07:04:44 UTC+5:30, Ytai wrote:
>>>
>>> Not sure what can cause that. Have you tried clock recalibration (as
>>> described one the IOIODude wiki page)?
>>>
>>>
>>> On Thu, Nov 21, 2013 at 9:04 PM, gopi natarajan <[email protected]>wrote:
>>>
>>>> Hi all, I too experiencing the same problem as Mr Christian
>>>> Wehrenfennig explained in this thread. My IOIO-OTG board can successfully
>>>> enumerates with my PC while its in Boot mode(I verified this by writing
>>>> Application firmware 3.30 and 4.0). Eventually the USB connection gets
>>>> lost
>>>> while the board initializes Application's USB Stack. Looking for your help.
>>>>
>>>> For your information,.
>>>>
>>>> I use UBUNTU 12.04 PC,
>>>> Bootloader Version : Device bootloader V4.0
>>>> Application Version : App 3.30 (I also tried AppV4.0)
>>>>
>>>> On Wednesday, 24 April 2013 21:54:26 UTC+5:30, Christian Wehrenfennig
>>>> wrote:
>>>>
>>>>> Hi,
>>>>>
>>>>> I'm experiencing problems connecting my new IOIO-OTG to a PC or to my
>>>>> phone (with the phone acting as a host). The PC reports that the device
>>>>> descriptor request failed and the windows device manager comes up with
>>>>> the
>>>>> error "The device could not start". Interestingly the board enumerates
>>>>> properly when booting into the bootloader, so firmware updates via
>>>>> IOIOdude
>>>>> are possible. The board also works properly in host mode with a phone
>>>>> connected as a device. What can I do to fix/further investigate this?
>>>>>
>>>>> Thanks,
>>>>>
>>>>> Christian
>>>>>
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