Started working on the DSP. Turns out something is wonky. Trouble with one or more of the knobs in the core. After putting a couple of debug statements into the asm, Looks like one knob is awol and/or tied into another's signal path. At any rate, whatever the cause, one is stuck at 0x400000 permanently, but the GUI for debugging has the knob being moved by another knob. That is not good.
Despite the hurdle, it did cause me to go into investigation mode and have a look at all the source. That was definitely a good thing, and now I'm comfortable digging into it. It's funny how all the texts and stuff on DSP make it sound like it is difficult - something only for people that are not you, etc. When really it's normal everyday programming -- it just happens that eventually your program enters a function which contains some math operations.
So, I guess, at the root of it, that's all "mathematics" really is -- a bunch of data getting passed around between registers... on paper... with a pencil.
20090703
20090620
20090613
(defun go-time ... )
Crisis averted. After reading through error logs and spying on processes, etc., I discovered that the fatal loop / hang in the opening phase of the eclipse startup was due to a missing SBCL_HOME var. After defining that in my .bashrc (I like it there) things went fine. Now able to get to into Eclipse, and also view the REPL view, so it looks like I am good-to-go.
(defun a-good-time ... )
Because of the lack of l33t h4x0rz at my current place of employment, I have taken to reading the books and essays of people who have the same inner need for creativity. I stumbled across an essay called "Teach Youself Programming in Ten Years" and somehow made my way to Hackers and Painters, which I'd skimmed before. (That link is to an essay form, but there is a full fledged book.) The book is also available through Oreilly's Safari bookshelf thing, which rocks.
Anyway, to make a long story short, I put a certain Debian-related (Linux) distro on my laptop a number of weeks ago after feeling like something was missing. A proper JRE, Eclipse, Python(s), MySQL, Apache httpd, Tomcat, hex editor, etc...
I messed around for a while writing a bunch of utils and the like, including some bootstrap-type tools that do the "I'm tired of coding this every time I start a new project" kind of work for me in a way that is more succinct and elegant. When I did this, I noticed that what I was doing was text crunching and parsing and making lots of lists of things. Not really a revolutionary revelation, but that, plus the H&P book in the back of my mind, means the next thing I added was Steel Bank Common Lisp (SBCL) and Cusp (Eclipse SBCL-friendly plugin). I'm trying to get that up and running as I type. After a few false starts with wrong versions, misleading installation instructions, files in the wrong places, etc, I think I am on the right track. About to get to the make-or-break point. Will it make, or break?
It breaks. Hmmm.
Anyway, to make a long story short, I put a certain Debian-related (Linux) distro on my laptop a number of weeks ago after feeling like something was missing. A proper JRE, Eclipse, Python(s), MySQL, Apache httpd, Tomcat, hex editor, etc...
I messed around for a while writing a bunch of utils and the like, including some bootstrap-type tools that do the "I'm tired of coding this every time I start a new project" kind of work for me in a way that is more succinct and elegant. When I did this, I noticed that what I was doing was text crunching and parsing and making lots of lists of things. Not really a revolutionary revelation, but that, plus the H&P book in the back of my mind, means the next thing I added was Steel Bank Common Lisp (SBCL) and Cusp (Eclipse SBCL-friendly plugin). I'm trying to get that up and running as I type. After a few false starts with wrong versions, misleading installation instructions, files in the wrong places, etc, I think I am on the right track. About to get to the make-or-break point. Will it make, or break?
It breaks. Hmmm.
Away and back
Well, shortly after my last post, I got married. That was planned. What wasn't planned was adapting to the new lifestyle.
Curiously, with all the female voice happening in the house now, I'm finding less of an urge to work with the synthesizers. I read somewhere(s) that complex music and sound stimulate the part of the brain that is also stimulated by the female voice. I guess I was compensating.
But.. also, since I have less time, I have chosen to focus on programming ('hacking', if I may be so bold). Haven't had time to hit the ToneCore DSP yet, but I did find something exciting to do. See next post.
Curiously, with all the female voice happening in the house now, I'm finding less of an urge to work with the synthesizers. I read somewhere(s) that complex music and sound stimulate the part of the brain that is also stimulated by the female voice. I guess I was compensating.
But.. also, since I have less time, I have chosen to focus on programming ('hacking', if I may be so bold). Haven't had time to hit the ToneCore DSP yet, but I did find something exciting to do. See next post.
20090204
A new adventure
Having done pretty well with MCUs and assembly, I'm going to try moving on to DSP land. Picked up a Line 6 Tone Core developer kit. Looking forward to seeing what this DSP business is all about. I know the signal processing maths, but pretty much nil about implementing audio processing in code. Can't wait.
20090201
Wow my walls and curtains are ugly
This is my command station. From this cockpit, I steer my glorious wooden abode and its inhabitant(s) through the lines of light, ranged in the non-space of the mind.
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