Oscillator/Clockout

[Dave]

fowardbias, I don't know what sougata is talking about, Yes you can just use the SEROUT command to shift out as many bits as you like. You just need to break it up into something usable such as 2 bytes and 4 bits or 1 16 bit word and 4 bits as long as the largest variable is no longer than 16 bits. I do it as such:
SHIFTOUT UCN_DATA,UCN_CLK,MSBFIRST,[OUTPUTS(1)\4,OUTPUTS(0)\16]
PULSOUT UCN_STB,PULSE 'STROBE UCN5832A DATA LATCH
With this type of device the data is "clocked" in so it does not matter if there is a slight pause between the data bits.

Dave Purola,
N8NTA

[sougata]

Hi,

Yes it is possible with PBP to throw out data bits the way dave said but I have never used it. For a motor control app a glitch may cause problems and I personally never take chances. If I get some time I would like to disassemble a shiftout code and get the total picture on the clock idleing issues.Hope dave can give some deeper insight.

Regards

Sougata

[fowardbias]

Dave, like you this is where I was going with this since the Shifout command is setup for this purpose. Thanks for a code example.

Sougata, I'm sorry I didn't follow you with the for next loop being used as a way of bit dumping, maybe I just don't see how the loop combines counting to data pin output. It probably can be done with more code but the Shift out command is ready to use.

Thanks to both for your ideas. J.S.

[Dave]

fowardbias, There is not a problem as the data is not updated untill you issue the strobe at the end of the shiftout. Just don't send 1 byte then go and have some breakfast then send the rest of the message. I haven't seen more than a fraction of a millisecond delay between the variables being shifted out using this method.

Dave Purola,
N8NTA