> larwe wrote:
>> CBFalconer wrote:
>>
>>> Well, you know what you are doing, yet you managed to emit 3 copies
>>> of the above. What did you do (if anything). Maybe this is a
>>> chance to tie down the cause of duplicated messages via google.
>>
>> I think you should take a job with Google, then bring them down from
>> the inside.
>>
>> Anyway: when I submitted it the first and second times, I got a
>> "temporary error occurred, please try again" message.
>
> sorry i didnt get you
> is it by someway related to my SPI problem that i posted ????
No, it has nothing to do with your problem, but solely with googles
habit of inciting multiple postings of the same article. Googles
interface to usenet is an execresence. Avoid it if possible.
Larwe is a knowledgeable user, yet still got trapped into
generating the useless copies.
--
"The mere formulation of a problem is far more often essential
than its solution, which may be merely a matter of mathematical
or experimental skill. To raise new questions, new possibilities,
to regard old problems from a new angle requires creative
imagination and and marks real advances in science."
-- Albert Einstein
Reply by abhay●October 10, 20062006-10-10
larwe wrote:
> CBFalconer wrote:
>
> > Well, you know what you are doing, yet you managed to emit 3 copies
> > of the above. What did you do (if anything). Maybe this is a
> > chance to tie down the cause of duplicated messages via google.
>
> I think you should take a job with Google, then bring them down from
> the inside.
>
> Anyway: when I submitted it the first and second times, I got a
> "temporary error occurred, please try again" message.
sorry i didnt get you
is it by someway related to my SPI problem that i posted ????
Reply by larwe●October 10, 20062006-10-10
CBFalconer wrote:
> Well, you know what you are doing, yet you managed to emit 3 copies
> of the above. What did you do (if anything). Maybe this is a
> chance to tie down the cause of duplicated messages via google.
I think you should take a job with Google, then bring them down from
the inside.
Anyway: when I submitted it the first and second times, I got a
"temporary error occurred, please try again" message.
Reply by abhay●October 10, 20062006-10-10
hi,
i am stuck with a new but strange problem related to SPI. i have
configured my philips micro LPC935 as master and i am trying to view
its clock output on CRO (actually DPO).but i am getting noise signals
only with some garbage frequency values that are not constant.i have
tried this also with ARM based microcontroller LPC2138 but i am getting
same response on that also.
so its a major problem because i cannot proceed with my SPI
experimentation untill i am sure
with clock output.
please suggest what steps i can take to overcome this or what possible
errors u suspect ?
thank you
Reply by Gene S. Berkowitz●October 7, 20062006-10-07
In article <ua2iv3-9i4.ln1@ibrro.de>, rzany@ibrro.de says...
> larwe wrote:
> > Noway2 wrote:
> >
> >>First thing is to make absolutely sure that you understand how SPI
> >>works - get a specification. SPI consits of a master and a slave,
> >
> > _Is_ there "a" specification for SPI? It seems to be considerably
> > fuzzier than, say, I2C. I could not find "a" SPI spec when I was
> > writing my last book. I could find only general information from
> > Motorola^H^H^H^H^H^H^H^H^HFreescale.
> >
>
> Who is Freescale? My old Motorola M68HC11 Reference Manual
> (M68HC11RM/AD REV 3 from 1991) has a whole chapter describing
> the SPI, and the QSMRM/AM (Queued Serial Module, 1991) too.
> Both are different (QSM has some more features), and both are
> totally different from TI's SPI solution which has to different
> shift registers for reading and writing. They (TI) shouldn't
> have called their silly MSP430 endpoint interface a SPI... :-(
>
> No, there is no common SPI spec at all.
Freescale is the semiconductor division of Motorola that was spun off as
a separate entity ~3 years ago.
There may be differences in IMPLEMENTATION of SPI by a particular
vendor; the SPECIFICATION covers how the signals on the wire should
behave, and what they mean.
Many of us here have made SPI work using just bit-banged I/O ports; the
advent of micros with SPI hardware just makes it easier (sometimes!).
--Gene
Reply by Not Really Me●October 6, 20062006-10-06
"larwe" <zwsdotcom@gmail.com> wrote in message
news:1160139946.789151.133320@b28g2000cwb.googlegroups.com...
>
> Noway2 wrote:
>
>> First thing is to make absolutely sure that you understand how SPI
>> works - get a specification. SPI consits of a master and a slave,
>
> _Is_ there "a" specification for SPI? It seems to be considerably
> fuzzier than, say, I2C. I could not find "a" SPI spec when I was
> writing my last book. I could find only general information from
> Motorola^H^H^H^H^H^H^H^H^HFreescale.
>
> Noway2 wrote:
>
>> First thing is to make absolutely sure that you understand how SPI
>> works - get a specification. SPI consits of a master and a slave,
>
> _Is_ there "a" specification for SPI? It seems to be considerably
> fuzzier than, say, I2C. I could not find "a" SPI spec when I was
> writing my last book. I could find only general information from
> Motorola^H^H^H^H^H^H^H^H^HFreescale.
> Noway2 wrote:
>
>>First thing is to make absolutely sure that you understand how SPI
>>works - get a specification. SPI consits of a master and a slave,
>
> _Is_ there "a" specification for SPI? It seems to be considerably
> fuzzier than, say, I2C. I could not find "a" SPI spec when I was
> writing my last book. I could find only general information from
> Motorola^H^H^H^H^H^H^H^H^HFreescale.
>
Who is Freescale? My old Motorola M68HC11 Reference Manual
(M68HC11RM/AD REV 3 from 1991) has a whole chapter describing
the SPI, and the QSMRM/AM (Queued Serial Module, 1991) too.
Both are different (QSM has some more features), and both are
totally different from TI's SPI solution which has to different
shift registers for reading and writing. They (TI) shouldn't
have called their silly MSP430 endpoint interface a SPI... :-(
No, there is no common SPI spec at all.
Bodo
Reply by larwe●October 6, 20062006-10-06
Noway2 wrote:
> First thing is to make absolutely sure that you understand how SPI
> works - get a specification. SPI consits of a master and a slave,
_Is_ there "a" specification for SPI? It seems to be considerably
fuzzier than, say, I2C. I could not find "a" SPI spec when I was
writing my last book. I could find only general information from
Motorola^H^H^H^H^H^H^H^H^HFreescale.
Reply by larwe●October 6, 20062006-10-06
Noway2 wrote:
> First thing is to make absolutely sure that you understand how SPI
> works - get a specification. SPI consits of a master and a slave,
_Is_ there "a" specification for SPI? It seems to be considerably
fuzzier than, say, I2C. I could not find "a" SPI spec when I was
writing my last book. I could find only general information from
Motorola^H^H^H^H^H^H^H^H^HFreescale.