Hi all. 

I am trying to interface my PSoC5 microcontroller with a the Sparkfun transceiver: nRF24L01 through SPI. The data sheet for the transceiver says that it will return the status register every spi-cycle if not given a command.

If I for example send a read-command to the tranceiver, then the register I requested should be available in the next SPI-cycle. 

Now, problem is that even though I send a command to the transceiver, it always return the status register - for some reason it doesn't get/understand my commands?? 

Anyone having any experiences with this or have an idea why it doesn't get/understand my commands?..

Thanks in advance - i am really disparate!! 

 Do you have access to a Oscilloscope or Logic analyzer so you can see the data on your SPI lines?

Or even a simple logic probe to just to see if your line is toggling properly?

Basically you should check that your electrical connections are good, make sure you have a common ground between the two modules, and make sure they are both operatin at the same VCC - or at the very least that they can tolerate each other's VCC if not the same.

The check your schematic and make sure you have it all connected correctly, then use a scope or analyzer to 'see' the data on the lines.

I hope this helps.

Hi Trenton,

Any chance that you can post your source code for interfacing the transceiver.

Thanks

I found myself a cheap, good working logic analyzer which is capable of decoding I2C, SPI and some more protocols. Though it does not use PSoCs (too bad!) i could recommend it, it saved me hours of testing.

I do not want to use tis forum as a commercial and I promise not to have any relations to that company.

Decide for yourself at http://www.ikalogic.com/ikalogic-products/scanalogic-2/

Bob

And if you really want to save money, there is a build-yourself-kit available. (There are also other version of this idea available, for example the logicboost). Maybe we should build a version based on the PSoC?

Then the devise should have at least one analog channel. It is hard to compete with the professionals :http://www.usbee.com/usbeeax-protestpod. But!!! Sdes on the forum, we have seen some great projects. Is it time to create a section of open source projects on the PSoC?
 

You mean something like my analog-digital mixed scope (http://www.cypress.com/?app=forum&id=2233&rID=51610 )? Unfortunately it runs only up to 1Msps :(

But I have something like the ikalogic scope in my mind, but up to 16bit, 2 analog channels anmd 40Msps... Whenever I figure out how to implement proper trigger logic in a data path / UDB, I will build this with the PSoC. (since it would need to work with 40MHz, all operations must be finished within 1 clock cycle, which seems to be complicated in the datapath)

I think if the author of the topic will lay out the project here to see prices, visitors will be able to apply their analyzer.
In the meantime:
Yes, I was referring to this project.   1Msps - will satisfy many.And more:
Hardware/DMA Based Multichannel Sample System
http://www.cypress.com/?app=forum&rID=66562
ENC28J60 - PSoC3 - Part 1 - SPI
http://kmmankad.blogspot.ru/2012_06_01_archive.html
KeyPad component
http://www.cypress.com/?app=forum&id=2492&rID=68603
etc.
It is a pity that these ideas are dissolved in the depths of the forum and become invisible.
I created a folder Community Projects  on my PC.