DAC161S997EVM

Hi Scott,

Sure you can read and write registers on S997 EVM via PC using below commands. commands are hexadecimal strings.

Read Word:

CMD – 04AAXXXX

RESP – 04AADDDD

Write Word:

CMD – 05AADDDD

RESP – 05AADDDD

AA- Address, DDDD- Data 

Regards,
Murali 

Hey folks, I wanted to add to this post as an FYI.  I, too, had problems getting the Windows app to run, so the information above helped me get up and running with a serial console program.  Some things that you may find helpful:

1. I used the RealTerm app (google search RealTerm) to communicate with the EVM

2. The EVM wants to run at 9600-N-8-1

3. I set Real Term display to Hex (Display->Text) and used the send function to interact (Send -> Send ASCII)

4. In the mode above, RealTerm takes decimal inputs and sends/receives Hex strings

5. When using a manual input mode like RealTerm, you need to send 05 05 01 19 (decimal when using  mode above), or  05050113 (using a hex string method) to disables the DAC's SPI timeouts.  Otherwise there is a default 100ms timeout waiting for the next SPI command, and the device will always be in a timeout condition and output the ERR_LVL value (about 3ma as the EVM as shipped and about 22ma if you remove the ERRLVL).

6. Once I figured out 5 above, I was able to easily operate the device manually with 05 04 nnn nnn (decimal) or 0504hhhh (hex) to set the output current.  The other command I use is 04 255 00 00 (decimal) 04FF0000 (hex) to read the status register.

I just want to add my hints:

The board can easily be used with software like LabView or Agilent VEE.

Simply take a decimal-value, split it to the form “05.04.xxx.yyy”and send over the serial port.

A: your decimal value 0…65535

B: 256

xxx=(A / B)-((A/B) MOD 1)

yyy=A MOD B

Then put the fragments together.

Example:

The decimal code 34160 results in the string “05.04.133.112”