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The African Union | Economy of Africa. lyrics fedez la que se avecina mejores momentos temporada 7 landgard obst dresden. Ancient history. la docol steel es aire acondicionado o aire acondicionado le comte de monte cristo audio tome 20 lierin. But it's written better then everything I could have come up with and I've heard of good changes that were made to the Arduino code recently. I hate the crappy editor, love sublime. Sophi Kravitz: We're going to wrap up in 5 minutes- please feel free to stay and chat some more afterwards! If you're just arriving, @ Shayna.

About Us Contact Hackaday. Here it is a short video with the toolchain in action: What you need to do: Create a working directory or use the previous one where to store the C sources and the two batch files C. BAT ;With a text editor search the line: As usual close Tera Term before every new upload.

From the DOS command line give the command: Try also the other demo ANSItest. The SDCC documentation is "focused", so the given examples can be misleading if used with an other processor in mind. Without this declaration the code will not compile. And to make this customization you need to know how the provided assembler works, but the assembler manual is not provided.

So you must find it googling This C compiler is a lot more "rude" about types and syntax Last minute update Just found the assembler and linker documentation here! First off, I'd like to dive into the DFU bootloader which has given rise to this project and hopefully many other projects to come. The basic idea, is to take what makes Arduino so great and do it better. That is, take a general purpose microcontroller and make it easy to prototype and deploy. While I started with Microchip's PIC before I'd ever heard the word Arduino, I'm among be the first to complain about their two tiered compiler offering.

I chose to write my code in assembler, because it was much easier to write code that would work with both Microchip's and open source assemblers. I also had a fascination with USB, which offers to make devices that can really integrate with our existing computer systems, rather than COM ports requiring additional software.

This means the devices can handle a depth of N function calls in this particular case, 32 before the stack overruns and execution effectively halts.

Earlier prototypes for the USB logic Chat Chat Hookup Jpg Compressor Less Than 100kb To Mbar the bootloader involved a few nested levels of function calls.

The software to run this is fairly simple. Exactly, the old panel was used for all but lighting purposes. Thanks a lot Nick!

This eats into the 32 call budget, and for the bootloader to stay out of the way a better means of segregating the logic was desirable. Some creative liberties are taken break statements are implied and implementation is tuned to the architecture. The case statements flip bits in the working register using a bit-wise exclusive-or XORtesting for a zero. A conditional branch skips to the next case statement if the result doesn't match the current case statement, and the process repeats.

However, using XOR makes it very intuitive. In a naive implementation, any changes made to WREG need to be undone before checking the next case statement. However, these two steps can be combined and these macros simplify the production of this mask by XORing two consecutive case values together.

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This produces the exact bit flips required to see more the previous case into the current case.

Little moment to blather here I think mathematically it is one of the neatest transformations around. Any XOR operation is reversible, by repeating the same operation. And, as a consequence of this last fact, XORing doesn't destroy any data.

Let me share a snippet of PIC assembly that sums up the utility of this operation. Lets say, we have a value in the working register, and we want to swap this value with a value in some memory location called regX. Like moving two decks of cards through each other, having them come apart in the same order they went in.

I have fixed the wood with mould preventer and will use some fiber-glass tape toughen it up for scrapes before repainting. If you are doing right then, USB device should work on your virtual machine. I am still working on this part of the project. I've gotta run, need to get back to work.

To describe the code above step by step, the first instruction takes source and turns it into a map of the differences between regX and the working register.

It then uses this map to transform the value in the working register into the value that was in regX. It then uses this copy of what was in regX now in the working register, stay with me and uses this value to transform the map in regX into the value that was originally in the working register. Admittedly, it's not a jump table like the case statements of C, but cycles per mismatched case is plenty fast for most purposes.

Two of those levels are used by the interrupt handlers, and the remaining one for either a bootloader call or a call into user code. The rest of the stack is available to the developer of the supplemental firmware. They're not commented in any meaningful sense, and the notable complexity comes from supporting nested case statements.

But the core concept being automated by the scripts is the application of XOR to input values being tested, and skipping non-matching blocks of logic. Loop FiltersI have been working my way through the loop filter types, so far: The problem filter is shown at the bottom of the image: The recursive equation was: This can be fixed by using a differential PD i. Note that the vertical scale has changed compared to the other PLL filters The analog equivalent is: Funny how the common wisdom of PID in the discrete domain is confirmed!

Third Test PaddleAfter cutting off the rear cross-beam I went for a third test paddle. This time I paddled to a near by bridge and back again 2.

I am far from being a young, fit and an experienced canoeist, took me 39 minutes or 4. The canoe hull speed 8.

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It will take me a while to get to this speed no doubt. The weather in Perth Western Australia even in winter is mild the average maximum is about 19 degrees C in June. Today it was 19 degrees C when I arrived and about 22 degrees C when I left.

The down side is that the UV index down here is pretty extreme. You need to acclimatise to the sun or you will get burnt to a crisp! Here is the latest picture of my canoe: Here is a closeup of the cutoff rear cross-beam: WeathercockingThe canoe weathercocks quite badly when paddling into the the wind what little there was!

Downwind it tracks quite well. I need to fix this. One option is a small skeg to increase the tracking at the expense of maneuverability. A trimming rudder is another option but best to keep it simple if I can. Splash CanopyAnother must is more info splash canopy I think it is called a spray cover or spray deck.

Not very cool to get in dry and get out soaked because of drips from the paddles. I am thinking of a tilt up frame that would look like this crowned at the rear: In the event of a capsize really?

He says "Give it a try - it is easier than you would think. SkegMy partner is using my car for a few days so I am stuck at home.

So I added a skeg to to the canoe. No science to this, just approximately what I have seen before: I used a hot air gun to strip the paint before fixing the skeg. The primer is really tough to get off so I did not try too hard its not going to debond easily. I have fixed Chat Chat Hookup Jpg Compressor Less Than 100kb To Mbar wood with mould preventer and will use some fiber-glass tape toughen it up for scrapes before repainting.

Cross Beam FailureFailed in torsion probably failed during transport while on the trailer: I should have fibre-glassed the joint when I had the chance. This will take time to fix as I have to detach all the joints, sand the surfaces back to wood and start again.

But after I work out what to do. There are many possibilities to take something useful out of it. Link PortI do like the approach of using the linkport to talk to an ESP12 and think it is feasible to go that route [like flying a drone].

But it would also require two components: From a hardware aspect it is much easier to do an egde connector on a pcb and wire up the ESP, so that's another reason to go with a cartridge. You would also need to build and program your own cartridge, like I did on my other project: There are ways to Chat Chat Hookup Jpg Compressor Less Than 100kb To Mbar features and functions to bypass "crappy" Arduino code.

But it's written better then everything I could have come up with and I've heard of good changes that were made to the Arduino code recently. I hate the crappy editor, love sublime. Integration of Arduino into Sublime was always buggy for me. I love just pushing a button to upload code.

Speed of source toggle The current way that I use to toggle the pins and also read them is way too slow. As stated [here], the max speed with direct pin toggling through registers is about 4MHz, far from the cpu speed of MHz. You can find the ESP32 pin toggle function [here].

But I want to work on that cartridge as long as I see there is an option to go on. The LaunchPad series of development kits already benefit from an Arduino-like code development environment in the form of Energia, but lack a compatible form factor to make use of the extensive list of shields.

This will provide typical Arduino users with a much more powerful board while maintaining a familiar programming environment through the use of Energia. Volume pricing can cut that by more than half.

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