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Re: Wiki reader

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rickman wrote:

> On 10/17/2012 1:36 PM, Paul E. Bennett wrote:
>> rickman wrote:
>>
>>> On 10/13/2012 12:37 AM, rickman wrote:
>>>>
>>>> My main concern is how fast a Forth can run the serial port.
>>>>
>>>> Rick
>>>
>>> Has anyone gotten their units yet and used the serial port?  I won't
>>> have mine until next week.
>>>
>>> I am looking to buy a USB to TTL adapter from eBay and it seems to be
>>> hard to find one with much info on the pins.  Most units use a PL2303
>>> chip.  Anyone know if that will interface ok to the Wikireader?  Are the
>>> Wikireader pins 3.3 volts?
>>>
>>> Rick
>>
>> Mine arrived last Thursday and I already have a schematic being sketched
>> up to provide a reasonable driver for the Debug port, along with a couple
>> of switches (prog and reset).I have contacted a firm who do spring loaded
>> pins and I am going to build a location block that I will mount on the
>> PCB of the jig on which the driver circuit is located. Yes, all the
>> Wikireader pins are 3.3V (apart from the Bat+ and Bat-)
> 
> I understand the processor is an Epson device.  What debugger is used
> with it?  Or is this just to reprogram the flash?  I have the impression
> that there is not much need to program the serial flash since nearly all
> the data and much code are on the SD card.

Most of the data is on the SD card from what I have gleaned so far. The SD 
card seems to be quite well buried inside the device and thus you need to 
take it apart to get at it. Access to the debug port (from under the battery 
compartment lid) should give an easier in. I also have other plans for the 
Wikireader as a potential small terminal for other systems.
 
> How are you going to use the debug port?  How are you going to use the
> WikiReader?

As a Wikireader (updated as required) and as a small terminal for embedded 
systems testing and debug.
 
> The spring loaded contact pads are typically used in manufacturing where
> you want to save the cost of the connector.  Is the spring loaded cable
> expensive?  Why not solder a standard connector?

The company I have been in touch with do them for bed-of-nails test jigs. I 
have a price from them and am organising the making of teh support block at 
the moment. I shall probably be adding the LTC1387 to get a decent RS232 
signal for the onward comms connections. The RESET and PROG pins will also 
be connected to a switch and pushbutton as appropriate. 

I am aiming at a worthwhile and useful tool out of this.

-- 
********************************************************************
Paul E. Bennett...............<email://Paul_E.Bennett@topmail.co.uk>
Forth based HIDECS Consultancy
Mob: +44 (0)7811-639972
Tel: +44 (0)1235-510979
Going Forth Safely ..... EBA. www.electric-boat-association.org.uk..
********************************************************************

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Thread

Wiki reader Mark Wills <forthfreak@gmail.com> - 2012-10-06 12:02 -0700
  Re: Wiki reader Mark Wills <forthfreak@gmail.com> - 2012-10-06 12:10 -0700
    Re: Wiki reader rickman <gnuarm@gmail.com> - 2012-10-09 13:28 -0400
      Re: Wiki reader Paul Rubin <no.email@nospam.invalid> - 2012-10-09 20:09 -0700
        Re: Wiki reader paulhidecs@gmail.com - 2012-10-12 03:57 -0700
          Re: Wiki reader Mark Wills <forthfreak@gmail.com> - 2012-10-12 05:35 -0700
            Re: Wiki reader "Paul E. Bennett" <Paul_E.Bennett@topmail.co.uk> - 2012-10-12 23:17 +0100
          Re: Wiki reader Mark Wills <forthfreak@gmail.com> - 2012-10-12 05:36 -0700
          Re: Wiki reader Mark Wills <forthfreak@gmail.com> - 2012-10-12 05:38 -0700
            Re: Wiki reader rickman <gnuarm@gmail.com> - 2012-10-13 00:37 -0400
              Re: Wiki reader rickman <gnuarm@gmail.com> - 2012-10-16 19:13 -0400
                Re: Wiki reader "Paul E. Bennett" <Paul_E.Bennett@topmail.co.uk> - 2012-10-17 18:36 +0100
                Re: Wiki reader rickman <gnuarm@gmail.com> - 2012-10-17 13:48 -0400
                Re: Wiki reader "Paul E. Bennett" <Paul_E.Bennett@topmail.co.uk> - 2012-10-18 18:35 +0100
                Re: Wiki reader Hannu Vuolasaho <hannu.vuolasaho@nospam.tut.fi.invalid> - 2012-10-18 18:01 +0000
                Re: Wiki reader "Paul E. Bennett" <Paul_E.Bennett@topmail.co.uk> - 2012-10-18 19:37 +0100
                Re: Wiki reader Hannu Vuolasaho <hannu.vuolasaho@nospam.tut.fi.invalid> - 2012-10-19 08:43 +0000
                Re: Wiki reader rickman <gnuarm@gmail.com> - 2012-10-18 15:21 -0400
                Re: Wiki reader "Paul E. Bennett" <Paul_E.Bennett@topmail.co.uk> - 2012-10-18 21:37 +0100
                Re: Wiki reader Mark Wills <markrobertwills@yahoo.co.uk> - 2012-10-18 13:48 -0700
                Re: Wiki reader visualforth@rocketmail.com - 2012-10-18 16:37 -0700
                Re: Wiki reader visualforth@rocketmail.com - 2012-10-18 16:50 -0700
                Re: Wiki reader rickman <gnuarm@gmail.com> - 2012-10-18 20:13 -0400
                Re: Wiki reader "Paul E. Bennett" <Paul_E.Bennett@topmail.co.uk> - 2012-10-19 19:28 +0100
                Re: Wiki reader rickman <gnuarm@gmail.com> - 2012-10-19 17:53 -0400
                Re: Wiki reader "Paul E. Bennett" <Paul_E.Bennett@topmail.co.uk> - 2012-10-19 23:24 +0100
                Re: Wiki reader rickman <gnuarm@gmail.com> - 2012-10-19 18:39 -0400
                Re: Wiki reader rickman <gnuarm@gmail.com> - 2012-10-19 18:51 -0400
                Re: Wiki reader "Paul E. Bennett" <Paul_E.Bennett@topmail.co.uk> - 2012-10-20 09:48 +0100
                Re: Wiki reader Mark Wills <forthfreak@gmail.com> - 2012-10-20 02:59 -0700
                Re: Wiki reader visualforth@rocketmail.com - 2012-10-20 10:08 -0700
  Re: Wiki reader Ian Osgood <iano@quirkster.com> - 2012-10-20 11:21 -0700
    Re: Wiki reader visualforth@rocketmail.com - 2012-10-20 11:55 -0700

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