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Re: new embedded forth

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On 9/12/2016 9:57 PM, Paul Rubin wrote:
> rickman <gnuarm@gmail.com> writes:
>> Why would you think TI didn't care about the MSP430?  They sell a
>> whole bunch of them and likely there is no ARM that will fill exactly
>> the niche of some of the MSPs when you consider all the factors.
>
> Well they are even giving the MSP designation to ARM cpus now (MSP432 is
> based on Cortex M4).  Of course they'll keep shipping existing 430
> models as long as people keep buying them, so my question is more about
> whether there will keep being new designs.  I do get the impression that
> there aren't that many new design wins for the 430.  There is apparently
> some process limitation that prevents them from making ARMs with FRAM
> but maybe they'll get around that somehow.

I think this is all speculation.  I don't watch MCUs as much as FPGAs so 
I haven't seen anything to indicate a lack of design wins.  It wouldn't 
seem impossible that the low end ARMs were capable of fitting most MSP 
sockets, but I don't know one way or the other.


>> Otherwise it is just price for the big jobs.  I don't think the MSP430
>> looses on price a lot and can often fit niches that other MCU lines
>> don't necessarily fit.
>
> Well I mentioned a few niches, but as you say, they are niches.  I do
> think designers care about future compatibility and capabilities as well
> as the short-term price, and I dunno that the 430's are really cheaper
> than ARMs for comparable parts, especially at the higher end.

If you are designing for high volume sockets all that really matters is 
a chip that will meet the requirements at the lowest price.  If a new 
requirement is added to a new product they start selection again.

I've seen this before where literally pennies determined the viability 
of a product.  They had a part selected and were in development but 
couldn't get the peripheral to work right.  It was something where they 
were using a feature in a corner case (or maybe just outside) and it 
just wasn't working right.  If he couldn't get the feature to work right 
it would cost another five cents and they would kill the project.  I 
don't think I ever found out how it turned out.


> I'm also awed by the low price of some of the Espressif wifi parts
> (ESP8266 and so on).  They use a MIPS-inspired 32-bit instruction set
> roughly comparable to a Cortex M3, not binary compatible but there's a
> GCC toolchain for it.  I don't think they have any process advantages or
> anything like that, so all I can think of is that they're lowering costs
> by not having to pay ARM royalties.

Has MIPS gone royalty free?


> Take a look at wemos.cc sometime -- their D1 wifi board is a favorite in
> some circles around here.  It's crazy cheap, quite powerful, and runs
> Lua (NodeMCU) and Micropython as well as the usual C stuff.

I've got a CPU in an FPGA module with bluetooth on board I want to get 
working.  I look at too many things and complete too few.

-- 

Rick C

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new embedded forth Jean-Michel Thoorens <jeanmichel.thoorens@gmail.com> - 2016-09-02 09:45 -0700
  Re: new embedded forth Cecil Bayona <cbayona@cbayona.com> - 2016-09-02 13:01 -0500
    Re: new embedded forth Jean-Michel Thoorens <jeanmichel.thoorens@gmail.com> - 2016-09-02 11:08 -0700
      Re: new embedded forth Cecil Bayona <cbayona@cbayona.com> - 2016-09-02 13:48 -0500
  Re: new embedded forth Paul Rubin <no.email@nospam.invalid> - 2016-09-11 23:45 -0700
    Re: new embedded forth Cecil Bayona <cbayona@cbayona.com> - 2016-09-12 09:51 -0500
      Re: new embedded forth Paul Rubin <no.email@nospam.invalid> - 2016-09-12 13:15 -0700
        Re: new embedded forth albert@cherry.spenarnc.xs4all.nl (Albert van der Horst) - 2016-09-12 22:46 +0200
          Re: new embedded forth Paul Rubin <no.email@nospam.invalid> - 2016-09-12 14:30 -0700
        Re: new embedded forth Jean-Michel Thoorens <jeanmichel.thoorens@gmail.com> - 2016-09-13 01:11 -0700
          Re: new embedded forth Paul Rubin <no.email@nospam.invalid> - 2016-09-13 01:32 -0700
            Re: new embedded forth albert@cherry.spenarnc.xs4all.nl (Albert van der Horst) - 2016-09-13 11:13 +0200
              Re: new embedded forth Paul Rubin <no.email@nospam.invalid> - 2016-09-13 10:25 -0700
                Re: new embedded forth rickman <gnuarm@gmail.com> - 2016-09-13 13:55 -0400
            Re: new embedded forth Jean-Michel Thoorens <jeanmichel.thoorens@gmail.com> - 2016-09-13 02:37 -0700
    Re: new embedded forth rickman <gnuarm@gmail.com> - 2016-09-12 21:39 -0400
      Re: new embedded forth Paul Rubin <no.email@nospam.invalid> - 2016-09-12 18:57 -0700
        Re: new embedded forth rickman <gnuarm@gmail.com> - 2016-09-12 22:13 -0400
          Re: new embedded forth Paul Rubin <no.email@nospam.invalid> - 2016-09-12 19:26 -0700
            Re: new embedded forth rickman <gnuarm@gmail.com> - 2016-09-13 13:46 -0400
              Re: new embedded forth Paul Rubin <no.email@nospam.invalid> - 2016-09-13 15:59 -0700
                Re: new embedded forth rickman <gnuarm@gmail.com> - 2016-09-30 19:06 -0400
                Re: new embedded forth Paul Rubin <no.email@nospam.invalid> - 2016-09-30 17:37 -0700
                Re: new embedded forth rickman <gnuarm@gmail.com> - 2016-10-01 10:41 -0400
                Re: new embedded forth Paul Rubin <no.email@nospam.invalid> - 2016-10-03 13:21 -0700
                Re: new embedded forth Paul Rubin <no.email@nospam.invalid> - 2016-09-30 17:50 -0700
              Re: new embedded forth Lars Brinkhoff <lars.spam@nocrew.org> - 2016-09-14 07:45 +0200
                Re: new embedded forth Lars Brinkhoff <lars.spam@nocrew.org> - 2016-09-30 15:32 +0200
      Re: new embedded forth albert@cherry.spenarnc.xs4all.nl (Albert van der Horst) - 2016-09-13 11:14 +0200
  Re: new embedded forth Jean-Michel Thoorens <jeanmichel.thoorens@gmail.com> - 2016-10-07 04:44 -0700
    Re: new embedded forth JUERGEN <epldfpga@aol.com> - 2016-10-07 04:59 -0700
      Re: new embedded forth Jean-Michel Thoorens <jeanmichel.thoorens@gmail.com> - 2016-10-07 05:45 -0700
        Re: new embedded forth rickman <gnuarm@gmail.com> - 2016-10-08 10:57 -0400
          Re: new embedded forth Cecil Bayona <cbayona@cbayona.com> - 2016-10-08 10:06 -0500
          Re: new embedded forth JUERGEN <epldfpga@aol.com> - 2016-10-08 08:16 -0700
    Re: new embedded forth Cecil Bayona <cbayona@cbayona.com> - 2016-10-07 12:25 -0500

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