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Interfacing ADIS16488 with Microchip dsPIC33FJ256GP710

Question asked by spritepr on Jun 29, 2012
Latest reply on Jul 2, 2012 by NevadaMark
Branched from an earlier discussion

Hey everyone, my name is Jose Molina and I am also trying to read data from an ADIS16488 but with a dsPIC33FJ256GP710 microcontroller from Microchip. My code for communicating with the ADIS is pretty similar to the arduino code posted by agleason but even though the data looks correct the ADIS never replies back to my controller.

 

Here is a picture of some O-scope readings I took of the CS/SS, SCLK, DIN, and DOUT respectively when sending 0x7E 0x00 0x00 0x00 for the product id as detailed in the datasheet on figure 16:

 

IMAG0390.jpg

 

Anyone have any idea what might be wrong? I've been trying to make this sensor work for about 4 days now and I'm completely stuck on what might be wrong. Checked SPI settings with the FRM about 6 times to make sure they are right.

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