Hi Harley!FWIW, this is one of the reasons I did it as a bit-banger on an arbitrary port. By the time you're done setting up the SSP and doing all the byte/bit manipulations, I suspect you'll end up with a larger hex image than you would with the 'brute force' approach.
JoeW3JDR
-------- Original message --------
From: Harley Burton haburton@users.sf.net
Date: 11/16/2017 11:44 PM (GMT-05:00)
To: "[gcbasic:discussion]" 579125@discussion.gcbasic.p.re.sf.net
Subject: [gcbasic:discussion] Controlling AD9850 DDS using the PIC16
Sorry Mike, I turn the data around byte and bitwise before I do anything with it. I have only two frequencies to send to the DDS so this can be canned in thed code. I want to write a routine to do it regardless of what I want to send but I haven't taken time to figure out what how to reverse the bit order of a byte or word of data. That's tomorrows job. For now, I'll just do it by hand.
Bye the way, I don't think I told you, I am building an HF APRS. The goal is to do it as an under $100 kit buying modules off of ebay. If this goes well, I should have it testing in a couple weeeks. It's going well thanks to you and the others on this forum.
Thanks again,
Hi Harley!FWIW, this is one of the reasons I did it as a bit-banger on an arbitrary port. By the time you're done setting up the SSP and doing all the byte/bit manipulations, I suspect you'll end up with a larger hex image than you would with the 'brute force' approach.
JoeW3JDR
-------- Original message --------
From: Harley Burton haburton@users.sf.net
Date: 11/16/2017 11:44 PM (GMT-05:00)
To: "[gcbasic:discussion]" 579125@discussion.gcbasic.p.re.sf.net
Subject: [gcbasic:discussion] Controlling AD9850 DDS using the PIC16
Sorry Mike, I turn the data around byte and bitwise before I do anything with it. I have only two frequencies to send to the DDS so this can be canned in thed code. I want to write a routine to do it regardless of what I want to send but I haven't taken time to figure out what how to reverse the bit order of a byte or word of data. That's tomorrows job. For now, I'll just do it by hand.
Bye the way, I don't think I told you, I am building an HF APRS. The goal is to do it as an under $100 kit buying modules off of ebay. If this goes well, I should have it testing in a couple weeeks. It's going well thanks to you and the others on this forum.
Thanks again,
Harley
N5BFB
Controlling AD9850 DDS using the PIC16
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