Some questions for your ADuC7026

Dear Sir/Madam,

I came from you another site AD7794. And I got one source cord for AD7794's from you.

We are controling for our product by your ADuC7026. So I refered your source code AD7794 to our development.
The source code AD7794 you sent seem to communicate with ADC via I/O port pin.

So why dont you use SPI-controler on ADuC7026 for this communication?

Now we are getting the trouble of the control by SPI-controler on ADuC7026.
Can we use your SPI-controler of ADuC7026 for any control?


  • 0
    •  Analog Employees 
    on Jan 14, 2013 7:07 AM

    Hi Kaos,

    I had a quick look into the AD7794 data sheet and it should not be a problem to use the HW SPI on the ADuC7026 to communicate with this part. The SPI frames are all 8-bit or multiple of 8-bit. So you should easy be able to change the SW you have from a I/O-pin SW SPI to the HW SPI of the ADuC7026.

  • Thank you for your good responce MMA,

    Well,,,,,difficult to my understanding sorry.

    SPI controler of Hardware is SPI=CPU what you say ,so no problem on the datasheet of CPU ,correct?

    Anyway ,for proceed our development , do you have a sample source file that work by same timing as ADC7794 by hardware SPI ?

    Or,,, Are there the setting of hardware SPI controler ,and the wave form on that time?

    They are very useful for us If you have them.

    Thanks Kaos

  • 0
    •  Analog Employees 
    on Jan 18, 2013 5:59 AM

    Sorry we do not have a explicit sample code for using the ADuC7026 with a AD7794, but there are general examples on the Evaluation CD demonstrating the HW SPI on the ADuC7026.

    For a default installation this is on C drive :

    C:\ADuC7XXXV0.2\ADuC702x\code\RealView Code examples\SPI\master