> The major problem with Bluetooth/wireless anywhere in system to be
> air/spectrum pollution and a pending system security headache. OK I'm
> known to be fanatic on certain issues. I am one of those that surfing
> *WITHOUT* Java/JavaScript and/or cookies is only sane way to go :)
I can understand that attitude.
> BTW your previous references to Triangle Digital Services and reviewing
> there offerings of development systems encourage me to keep searching
> for someone who had already done all the hard work.
I thought that the majority of the work had been done by Triangle. This
link describes what you need to order from them and goes on to describe the
software and logging operations (it is almost a one stop shop in that
respect - leaving you just the case, the power supply arrangements and the
assembly of the programme components from the library with any special code
you needed).
http://www.triangledigital.com/man2020f/ch7gps.htm#gpsloggermoduleoperation
I can understand that the cost of that set-up may be more than you desire
to pay for such a capability and I won't hold that against you (or anyone
else). For some jobs I know the basic boards can be too expensive to
consider. I can also understand that the Triangle modules may be physically
too large for your project.
> dmm from "down under" has recommenced
> "About half-way down the page there's a rs232 to MMC/SD card kit using a
> pic. http://www.compsys1.com/workbench/ "
Looks like a very small and neat module (I am assuming you meant about 1/3
down the page and are referring to the Ulrta Compact SD/MMC board). If you
already have a GPS receiver that gives you the position data then this
module could act as your logger and data-go between in any one of the forms
that have been discussed in this thread.
> That whole site has the flavor of what I was looking for.
> I suspect my final solution will be formed around their modules.
>
> Once again my thanks to comp.arch.embedded for their tolerance and
> encouragement.
You are welcome.
--
********************************************************************
Paul E. Bennett ....................<email://peb@amleth.demon.co.uk>
Forth based HIDECS Consultancy .....<http://www.amleth.demon.co.uk/>
Mob: +44 (0)7811-639972
Tel: +44 (0)1235-811095
Going Forth Safely ....EBA. http://www.electric-boat-association.org.uk/
********************************************************************
Reply by Charles Jean●June 24, 20052005-06-24
On Thu, 23 Jun 2005 16:53:48 GMT, CBFalconer <cbfalconer@yahoo.com>
wrote:
>Grant Edwards wrote:
>> Mat Nieuwenhoven <mnieuw@dontincludethis.zap.a2000.nl> wrote:
>>
>... snip ...
>>
>>>> I envision each <CR><LF> terminated "sentence" being stored in a
>>>> sequential block. [ Reading software responsible for ignoring any
>>>> thing after <CR><LF>. ]
>>>
>>> I believe all XP supported USB card readers expect the card to
>>> have a file system on them, because they identify themselves to XP
>>> as a mass storage device type.
>>
>> I don't see the reasoning behind that statement. There is no
>> connection between a device being a mass storage device and a
>> device requiring a filesystem. I've used dozens of various
>> card-readers and none of them expected/required the card to
>> have a filesystem even though they were all mass storage devices.
>
>You might do well to emulate the CP/M system, as used for script
>(submit) files. The storage was originally based on the 128 byte
>sector size of an 8 inch SSSD floppy (and subsequent other formats
>were mapped into this). The submit file consisted of one line per
>sector, <cr> terminated. Although the file was a part of the file
>system, the only addressing necessity was sequential sectors.
___
I'd use a PIC with AD converters and USART, say a 16F877A. Use the
24FC512 EEPROM for local storage-it holds 64 kbytes or 32 kbytes of
10-bit AD conversions. You can daisy-chain up to 8 of them for 256K
readings. When you are ready to process the data, hook up an RS232
connection between the PIC and your computer and transfer the raw AD
readings to the computer. Then let the computer do all the number
crunching to convert the AD readings to voltages, and create a
voltage.txt file on your computer that you can import into a
spreadsheet.
Reply by dmm●June 24, 20052005-06-24
On Fri, 24 Jun 2005 13:48:24 -0500, Richard Owlett <rowlett@atlascomm.net> wrote:
>dmm wrote:
>> [snip]
>>
>>
>> About half-way down the page there's a rs232 to MMC/SD card kit using a pic.
>> http://www.compsys1.com/workbench/
>>
>>
>
>*THANK YOU* *EUREKA* *ALLELUIA*
>Can you tell you have identified what I was grouping towards ;}
>
>I was dreamin of pre-assembled and tested.
>Although haven't used a soldering iron in quarter century, guess I still
>remember which end burns fingers.
>[ PS I'm so old that I won a Blue Ribbon in a Jr. High Science Fair with
>a 6AL5 full wave rectifier ;]
>
>I'll have to spend some serious time on that site. They have some things
>there that open up a plethora of possibilities. I say plethora to hint
>at benign version of "Pandora's box".
You're most welcome.
Reply by Richard Owlett●June 24, 20052005-06-24
Paul E. Bennett wrote:
> Richard Owlett wrote:
>
>
>>I didn't know of PDA's using USB to connect with a desktop PC. I had
>>only noticed units using RS232 or Bluetooth ( I wish to use neither of
>>those. )
>
>
> If either of those options exist then the converters from RS232 or
> Bluetooth into USB are readily available and quite cheap (Bluetooth/USB)
> dongle is about �10/$14). Although I am also certain that one of the PDA's
> allows hook-up to a PC via USB and also features RS232.
>
The major problem with Bluetooth/wireless anywhere in system to be
air/spectrum pollution and a pending system security headache. OK I'm
known to be fanatic on certain issues. I am one of those that surfing
*WITHOUT* Java/JavaScript and/or cookies is only sane way to go :)
BTW your previous references to Triangle Digital Services and reviewing
there offerings of development systems encourage me to keep searching
for someone who had already done all the hard work.
dmm from "down under" has recommenced
"About half-way down the page there's a rs232 to MMC/SD card kit using a
pic. http://www.compsys1.com/workbench/ "
That whole site has the flavor of what I was looking for.
I suspect my final solution will be formed around their modules.
Once again my thanks to comp.arch.embedded for their tolerance and
encouragement.
*THANK YOU* *EUREKA* *ALLELUIA*
Can you tell you have identified what I was grouping towards ;}
I was dreamin of pre-assembled and tested.
Although haven't used a soldering iron in quarter century, guess I still
remember which end burns fingers.
[ PS I'm so old that I won a Blue Ribbon in a Jr. High Science Fair with
a 6AL5 full wave rectifier ;]
I'll have to spend some serious time on that site. They have some things
there that open up a plethora of possibilities. I say plethora to hint
at benign version of "Pandora's box".
Reply by Steve at fivetrees●June 24, 20052005-06-24
"Paul E. Bennett" <peb@amleth.demon.co.uk> wrote in message
news:d9h5dg$ed6$1$830fa795@news.demon.co.uk...
> Richard Owlett wrote:
>
>> I didn't know of PDA's using USB to connect with a desktop PC. I had
>> only noticed units using RS232 or Bluetooth ( I wish to use neither of
>> those. )
>
> If either of those options exist then the converters from RS232 or
> Bluetooth into USB are readily available and quite cheap (Bluetooth/USB)
> dongle is about �10/$14). Although I am also certain that one of the PDA's
> allows hook-up to a PC via USB and also features RS232.
USB connectivity seems to be standard on e.g. the iPAQ range.
And there's always Bluetooth, of course.
Steve
http://www.fivetrees.com
Reply by Paul E. Bennett●June 24, 20052005-06-24
Richard Owlett wrote:
> I didn't know of PDA's using USB to connect with a desktop PC. I had
> only noticed units using RS232 or Bluetooth ( I wish to use neither of
> those. )
If either of those options exist then the converters from RS232 or
Bluetooth into USB are readily available and quite cheap (Bluetooth/USB)
dongle is about �10/$14). Although I am also certain that one of the PDA's
allows hook-up to a PC via USB and also features RS232.
--
********************************************************************
Paul E. Bennett ....................<email://peb@amleth.demon.co.uk>
Forth based HIDECS Consultancy .....<http://www.amleth.demon.co.uk/>
Mob: +44 (0)7811-639972
Tel: +44 (0)1235-811095
Going Forth Safely ....EBA. http://www.electric-boat-association.org.uk/
********************************************************************
Reply by Richard Owlett●June 24, 20052005-06-24
Tom wrote:
> In article <11bm45r5dnt9kc2@corp.supernews.com>, rowlett@atlascomm.net wrote:
>
>>My thanks to the group for providing useful input in response to a
>>poorly defined question.
>>
>>I had broken my problem statement into three parts.
>>1. what I wanted to accomplish
>>2. a view of possible solution
>>3. thoughts on what hardware might satisfy needs/desires/aesthetics
>>
>>Unfortunately my original post pureed all into amorphous glob.
>>My apologies.
>>
>>I'll break things down in above groupings.
>>
>>1. What am I looking for
>>It might be described as "data logger" or a "very large FIFO".
>>
>>The input will be an RS232 data stream terminated by <CR><LF> of no more
>>than 100 bytes at 4800 BAUD occurring once per second.
>>
>>It shall buffer/store at least 10 mega bytes
>>
>>The output shall be via USB
>> 1. I wish to take advantage of USB speed
>> 2. My computer has available USB port(s)
>> 3. My computer does *not* have available serial port(s)
>>
>>
>>2. Possible solutions
>>Flash devices are large and do not require power to maintain data.
>>There are environments such as FORTH which can presume any mass storage
>>device/system to be a sequence of nnn byte blocks/sectors/whatever
>>
>>3. available hardware
>>Let's just forget how badly I mangled this one ;{
>>
>>
>>Is this a better problem definition?
>
>
> You forgot two very important details:
> 1. Do you only need one of these or do you need hundreds or thousands of
> these?
Only one.
> 2. Do you want to build one or do you want to buy one?
Buy.
>
> If you only need one of these and it's OK to buy instead of build, then buy a
> used iPaq (or other PDA) from eBay. It's small, cheap, has a serial port, it
> has a USB port and it can store 32 or 64 or 128 MB or even more if you add a
> memory card. Software to do GPS and/or raw serial data logging is freely
> available. I use my iPaq for this purpose all the time.
I didn't know of PDA's using USB to connect with a desktop PC. I had
only noticed units using RS232 or Bluetooth ( I wish to use neither of
those. )
>
> A few other details which other people have already asked but I'll repeat them
> here again:
> 3. Is there a physical size limitation for this device?
Size isn't tightly restricted. It needs to conveniently travel on dash
with accompanying GPS mouse receiver. But availability of PDA with USB
opens up possibility of using GPS receiver that plugs into CF slot. This
is for a home project that I may not use for long so I would like to
stay under a couple of hundred dollars. If the ideas I'm playing with
work,I might use it for a couple of years.
> 4. Are there any requirements on the user interface?
Not really. I'm willing to trade inconvenience for low cost.
> 5. Are there any power consumption / battery life requirements?
It needs to be battery operated but will spend most of its operating
time plugged into a cigarette lighter or a wall wart.
Some have suggested a laptop as the logger. Too big. Too expensive.
>
> --Tom.
Reply by dmm●June 24, 20052005-06-24
On Thu, 23 Jun 2005 17:18:59 -0500, Richard Owlett <rowlett@atlascomm.net> wrote:
>Jim Stewart wrote:
>> Grant Edwards wrote:
>>
>>> On 2005-06-21, Paul Carpenter <paul$@pcserviceselectronics.co.uk> wrote:
>>>
>>>
>>>> You want a USB CF card to be WinXP compliant *without* a file
>>>> system? That is an oxymoron like Military Intelligence...
>>>
>>>
>>>
>>> Leave it to MS to make the simplest, most obvious use of a
>>> device impossible.
>>
>>
>> Does Win XP provide any way to read/write the
>> raw sectors of the device?
>
>As OP I say that is *KEY* !!!
>Actually I presumed capability of writing/reading physically sequential
>raw sectors.
>
>Does any of this conflict with what I said in
>'Revised draft of " [OT?] a SIMPLISTIC RS232 data logger using some
>flash device --- does it exist commercially?" ' ?
>
> Grant Edwards wrote:
>
>> On 2005-06-21, Paul Carpenter <paul$@pcserviceselectronics.co.uk> wrote:
>>
>>
>>> You want a USB CF card to be WinXP compliant *without* a file
>>> system? That is an oxymoron like Military Intelligence...
>>
>>
>>
>> Leave it to MS to make the simplest, most obvious use of a
>> device impossible.
>
>
> Does Win XP provide any way to read/write the
> raw sectors of the device? If not, that's
> the real Microsoft fsk.
Yes, It does, I know at least a program , an hex file editor, "hex
workshop" if I remember well, that is able to open "raw" device , but I
am not totally sure about it's capabilites ( if effectively do what they
claims ), I tried with a secure digital card and an USB reader and seems
to work.