ADIS16250: Help with setting up SPI

[InitialDriveGTR]

Hello, I have two ADIS16250 Gyros from analog. I have spent abu thte last 3 days trying to figure out how to use them, but the datasheet is way too complicated for me. I have tried:

<code>
DEFINE OSC 20
DEFINE HSER_RCSTA 90h
DEFINE HSER_TXSTA 24h
DEFINE HSER_SPBRG 21 ' 57600 Bauds
DEFINE HSER_CLOERR 1

INCLUDE "modedefs.bas"

Hserout ["ACTIVE",13]

RST var portd.0
SCLK var portd.1
CS var portd.2
DOUT var portd.3 'data from PIC to Gyro
DIN var portd.4 'data from gyro to PIC

temp var word'(2)
index var word

High SCLK
High CS

pause 1000

main:
low CS
Shiftout DOUT, SCLK, 1, [$04,$00]
high cs
pause 100

low CS
SHIFTIN DIN, SCLK, 2, [temp\14]
high CS
pause 100

HSEROUT ["Temp: ",HEX temp,13]
pause 100
goto main
</code>

But, it doesn't work. I would really appreciate it if someone could give me an example, or set me off in the right direction.

Thanks,
InitialDriveGTR

[Raflex]

Hello, the reset pin must be high or low, try adding RST=1 or RST=0

[Payatronico]

muchacho amigo mio

RST must be high, RST=1.
maybe the problem is the crystal, try with a 4mhz cristal and more slowly speed of comunication, quiza asi se solucione tu problema chico

[InitialDriveGTR]

Are the data adresses that I am shifting out correct? That is what I think I am doing wrong. I couldn't fully understand the datasheet's SPI output.

Thanks,
InitialDriveGTR

[Raflex]

The data adresses is ok. However, the ADIS16250 SPI clock speed is 2.5 MHz, you need to decrease your clock speed in order to transfer data between devices.

Try reading the status register of the ADIS16250 ($3C).

[InitialDriveGTR]

How does one go about decreasing the SPI clock speed?

Thanks,
Benjamin B. Roy