How to connect serial and TTL converter and The usb-boot pin

ZhangJieJing kzjeef at gmail.com
Thu Aug 6 23:03:15 EDT 2009


Hi xiangfu,

Thanks for your picture, I finally connect the pins...

So,  i short the USB-BOOT pin too, But I really not very clear with the
usage, Is this related to usbboot program from xburst-tools ?
---
Best regards,
Zhang Jiejing


On Fri, Aug 7, 2009 at 10:06 AM, Xiangfu Liu <xiangfu at qi-hardware.com>wrote:

> Hi
>
> ZhangJieJing wrote:
>
> > > Hi everyone,
> > >
> > > I just got a factor machine , I'm  settling up the serial, I can find
> > > the pin number of the board via this [1] but I'm still have some
> > > question about how to setup the serial, I have two question:
> > >
> > > 1, which pin should I connect the TTL and the RXD, TXD, GND ? Is there
> > > have and Picture or something else can be guide?
> >
> this need a Serial header,
>
> RXD -- 2
> TXD -- 3
> GND -- 5
>
> here is a picture:
> http://www.openmobilefree.net/wp-content/uploads/2009/08/P8071558.JPG
>
> > >
> > > 2, I saw the [1] also have to cable named "boot from usb", what these
> > > cable for?
> >
> just for easy to short :-)
>
> > >
> > > [1] http://www.openmobilefree.net/?p=61
> > >
> > > Thanks in advance.
> > > ---
> > > Best regards,
> > > Zhang Jiejing
> > >
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> > >
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