Hi Terry, Forest - thanks for your nice feedback.
Acutally, the MIRF-lib available in the playground has been updated in the meantime to use the SPI-lib build into the Arduino 22 IDE. I think the playground library would benefit from some nice and simple examples, making the great features of the nRF24L01+ more accessible to everybody.
Personally, I did not have yet the time to expand my own lib to a state were it would be useful. And due to time restraints, it will take me some additional months until I will be able to finish this one. I will post it here in the forum as soon as I have something workable.
However, there is another nRF24L01+/Arduino library available on the net which features a slightly different design and interface and which might be interesting for people using the Arduino/nRF24L01+ combination. It can be found here: http://maniacbug.github.com/RF24/index.html.
Furthermore, there is also a nice nRF24L01-library design for the mbed-platform at http://mbed.org/cookbook/nRF24L01-wireless-transceiver, also with a slightly different approach, which could easily be adapted for the Arduino.
Currently, only the mbed-lib does feature direct access to important parameters of the Enhanced-Shockburst mode, which is in my point of view the most convenient and important feature of these chips. Another nice property of a full lib would probably be a simple, automatic packaging mechanism, making oneself somewhat more independent from the maximum 32 byte packet size of the nRF24L01+ ... - I am thinking along these lines, but did not yet come up with a good implementation idea here.
Terry: you posted in another thread that you are researching the possibilities of an enhanced nRF24L01+ with power amplifiers and/or low-noise receivers. I'd love to hear about your results!
Best, cpixip