batteries keyboards and assembly language

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YahooArchive
Posts: 1462
Joined: Fri Oct 19, 2012 5:11 am

batteries keyboards and assembly language

Post by YahooArchive »

>Can I buy a panasonic ml2020 battery from you ?

We do not sell components, they are available from Digikey, Mouser or Newark.

>I\'m going to buy a few more boards to connect together using spi or i2c one
for console keypad display, other for io, sensors whatever. Any info would be
helpful. Do you sell arrow keypads with displays ?

There are some examples in the programming section on the Coridium website, also
some here in the files sections

>Also if I use the armmite boards 29 dollar versions I will need the hardware
dongle to program them, correct ?

You only need 1 dongle for programming, once programmed the dongle is not
necessary

>Is it possible to link in assembler files with this compiler and if so how?

The C is based on Gnu gcc, so that is where you would find documentation on the
assembler and linking. Just FYI, we find the C compiler is often better at
optimizing than can be done easily in assembly language. And we only use
assembly language for initialization.



YahooArchive
Posts: 1462
Joined: Fri Oct 19, 2012 5:11 am

communication between ARMmites

Post by YahooArchive »

> Has anyone actually done this? I couldn't figure out how to do it with a group
of ARMmite Pros.
>
> I think the included i2c and SPI support libraries only implement Masters, not
Slaves? And since both interfaces are bitbanged/unbuffered the CPU has to sit
there watching the IO..

The i2c and spi routines are implemented as bit banged.

IMO the i2c hardware is pretty primitive, requiring almost more code than just
bit banging it. You could engage the slave, but there is only a single byte of
buffering available

The ssp does have a FIFO that might be useful between devices

For now the most likely candidate would be to use the serial port, as it has a
FIFO and interrupt routines to buffer input

YahooArchive
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Joined: Fri Oct 19, 2012 5:11 am

Re: batteries keyboards and assembly language

Post by YahooArchive »

There is always RS485, using level shifters/driver chips. Gives you much
longer distances
and multi-drop. If needed, you could then run SNAP (
http://www.hth.com/snap/) over the top as the protocol....


Ross

basicchip
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Location: Lake Tahoe, CA
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Re: batteries keyboards and assembly language

Post by basicchip »

The VL2020 will also work, more expensive, and less power, but its in stock now
at Digikey.

--- In ARMexpress@yahoogroups.com, "ross.kingii" wrote:
>
> Does anyone have a good source for these.
>
> Newark doesnt have it listed
> Digikey & Mouser don't stock and show a ship date for 1 at 9/24/2010
>

YahooArchive
Posts: 1462
Joined: Fri Oct 19, 2012 5:11 am

Re: batteries keyboards and assembly language

Post by YahooArchive »

>from the help line

>On my newly acquired Super Pro-Pro+, what is the technical name for the white
battery connector? I just don't remember or recognize that dang thing.
>Is it like a FC102P., (JK) or something. In other words, I want the female
half, but it needs to be right.


This is a JST connector, you can pick up a mate from SparkFun

http://www.sparkfun.com/products/8599

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