[chbot] nordic nRF

Tue May 21 04:49:24 BST 2013

Would that be Mark A for American?
I think you'd have more success with articles than I would with Verilog...

I showed one of these last month ... and there was a comment from 
someone about its compatibility.
http://nz.element14.com/freescale-semiconductor/frdm-kl25z/kl25z-freedom-board-arm-dev-board/dp/219186101

It's certainly low power, ARM, in your price range, and the spec sheets 
suggest a USB host.
What they don't say is it comes with CooCox IDE, and is supported by 
mbed.org.
While its accelerometer isn't calibrated, at least you can plug your 
shield onto it.

Mark B  .... the other one

Mark Atherton wrote:
> Hi Volker,
>
> Ahhah I see the confusion.
>
> Both wireless chip types (nRF24L01+ and nRF24LE1) have transceivers. 
> Last night, the small unit was programmed as RX only, and the USB Host 
> end as TX only. Since they use enhanced-shockwave they really should 
> be called PRX and PTX.
>
> ARM, yes gorgeous, but is there a readily available USB Host example 
> that runs using a free toochain, Single chip, Consumes less than 40mA 
> at 3v3, and Costs less than NZ$10 ?
>
> Actually that was Mark B's yourduino.com. Tis I here, Mark A.
>
> I suggest we are now Mark A and Mark B otherwise I will have to start 
> to write articles from Shed Magazine, and he will have to learn some 
> Verilog :)
>
> -Mark A
>
> At 02:35 p.m. 21/05/2013, you wrote:
>> On Tue 21 May 2013 06:15:00 NZST +1200, Mark Atherton wrote:
>>
>> Thanks!!
>>
>> > If I were to do it all over again I would only buy from 
>> <http://www.canton-electronics.com/>http://www.canton-electronics.com/
>> > who also have the nRF24LE1 programmer along with low cost modules on
>> > 0.1" headers.
>>
>> Agreed, good supplier. ebay doesn't seem to cut it most of the time.
>>
>> I won't be getting into PIC anything because the effort is far better
>> spent on getting into ARM, and PIC sucks for all but the 32bit from
>> MPOV. dspic sounds good but should be replacable with a bigger arm.
>>
>> You gave the distinct impression yesterday that one chip is the receiver
>> and the other the transmitter, so I'm being very confused, but Mark A's
>> yourduino.com suggests this is not so, and either chip can be used at
>> either end, but the LE1 has a 8051 included. Now things are looking
>> clearer.
>>
>> > version. SDCC is open and free. Not the highest level of
>> > optimization, but the price is right and easy to use. The only thing
>> > that drove me nuts was having to put all of the interrupt handlers
>> > in the main module.
>>
>> Code size is secondary until you run out of space, but for very low
>> power using the 8051 might be useful, at the cost of fiddling with
>> another completely different tool chain.
>>
>> > Some kind soul has created an SDK
>> > http://www.diyembedded.com/lib/nrf24le1/nrf24le1_sdk_v1.0.zip he has
>>
>> Just looking at the files it looks very good indeed.
>>
>> What programmers are available that run on Linux, do you know?
>>
>> > Part also has ADC, PWM, UART, GPIO on board - the trick is to find a
>> > module with required features available.
>>
>> You mean a module that connects the QFN pins to some PCB copper?
>>
>> > Nordic also do a UHF version that covers 433 / 868 / 920MHz with
>> > +10dBm TX, but lower data rate. With good RF engineering, this could
>> > get you kilometres of range...
>>
>> Hmmm....
>>
>> Thanks Mark for the pointer to these chips, they could be very useful
>> for something sometime.
>>
>> Volker
>>
>> -- 
>> Volker Kuhlmann
>> http://volker.dnsalias.net/     Please do not CC list postings to me.
>>
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