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Forum Index : Microcontroller and PC projects : The start of something new.
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VK6MRG Guru  Joined: 08/06/2011 Location: AustraliaPosts: 347 |
I have been looking at designing my own Maximite. As i have stated many times now, I want an all singing, all dancing, Maximite compatible, single PCB, Microcomputer. The trouble i have been having is with the PIC32 100 pin chip track breakout design. But thanks to Micro Chip I have found a solution! Ma320003 
Now I have to start the real task of designing the layout of all the I/O options. (this may take me a while) Its easier to ask forgiveness than to seek permission! ............VK6MRG.............VK3MGR............ |
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sparkey Senior Member  Joined: 15/06/2011 Location: AustraliaPosts: 819 |
here here sparkey and while your at it lets go the hole cuboodle run at 120 MHz technicians do it with least resistance |
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| Dave Everett Regular Member  Joined: 24/06/2011 Location: AustraliaPosts: 43 |
I was looking at that too, but $60 for the usb interface? Outrageous. Luckily that is unnecessary to develop code. Dave Everett |
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vasi Guru Joined: 23/03/2007 Location: RomaniaPosts: 1697 |
Better save for a Chipkit MAX32 as you have already a functional and tested microcontroller with all the basic circuitry and sockets for all the I/O pins (plus, some protection on analog inputs against accidental 5Vcc). It require a modified version of Geoff's MMBasic but you will do that anyway. The board is nice and your shield will enrich it. It use a serial bootloader but that may be on your advantage as you will obtain a faster Basic interpreter - no need to keep the USB awake, the FTDI chip is doing that for you. No USB firmware inside the engine, then more space for other things. But you can add it of course, as Basic language feature (that is better). The advantage of having the other peripherals on a shield is that you can build it in a hurry, with what you have at hand, and changing it later with a better looking shield (which you can sell to anyone). Vasi Hobbit name: Togo Toadfoot of Frogmorton Elvish name: Mablung Miriel Beyound Arduino Lang |
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elproducts Senior Member Joined: 19/06/2011 Location: United StatesPosts: 282 |
Vasi, Has someone developed a Maximite version for the chipKIT that is available for download? www.elproducts.com |
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| vasi Guru Joined: 23/03/2007 Location: RomaniaPosts: 1697 |
Hi, Ken Segler have a port for his Max32 board but the .hex file he posted is not downloadable by the avrdude who will crash. Right now he is working for Don's boards but when he will have enough time, he will post the complete sources as promised. I personally tried to compile from a mix of sources for original Maximite and Max32 boards, trying to complete the missing files from Ken's archives. All trials ended in a non-uploadable firmware, causing avrdude to crash but last time I got an uploadable and workable (up to a point) variant which use UART2 as console (Ken's work). I guess switching to UART1 does not consist in only changing a number, we must change also the original pin usage to free the UART1... but I have also an error in the sources because you can write a program using numbers as labels but you can't execute any command in immediate mode. I didn't investigated further because I have another project to finish but when I will return to this, I will use MPIDE to rewrite the firmware from scratch with a complete MAX32 pin assignment (I intend to continue what Geoff started with that file where you have aliases for your pins, making the firmware portable). Unless I will have Ken's complete and compilable sources to start with from inside MPLAB X... Vasi Hobbit name: Togo Toadfoot of Frogmorton Elvish name: Mablung Miriel Beyound Arduino Lang |
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haiqu Senior Member Joined: 30/07/2011 Location: AustraliaPosts: 152 |
Vasi, I'm sticking with MPLAB 8.70 for now. MPLAB X seems to make very large binary files. Rob unzip, strip, touch, finger, grep, mount, fsck, more, yes, fsck, fsck, fsck, umount, sleep |
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| elproducts Senior Member Joined: 19/06/2011 Location: United StatesPosts: 282 |
Thanks Vasi. I really just need the .hex file as I can flash it via PICkit 3 rather than avrdude. Getting the full source would be excellent also. I look forward to Ken's release. Rob, MPLABX uses the same compilers as MPLAB 8.7x so I don't understand why you would see larger binary files with a different IDE? www.elproducts.com |
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| vasi Guru Joined: 23/03/2007 Location: RomaniaPosts: 1697 |
Hi elproducts, Here (at the end of article) is Ken's work, .hex and sources. Rob, thanks for advice. Vasi Hobbit name: Togo Toadfoot of Frogmorton Elvish name: Mablung Miriel Beyound Arduino Lang |
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| vasi Guru Joined: 23/03/2007 Location: RomaniaPosts: 1697 |
BTW, the Microchip compilers we install and use along MPLAB classic or X, come in Lite version. For Windows you have the option to use a serial for the commercial part but in Linux I think you don't have that option (didn't paid enough attention)? Maybe we have Linux compilers without limitations? Anyway, what I want to say is that usually we have just the Lite version for free and the compiler from MPIDE come without restrictions and produce full optimized code. I am right? Or that compiler have also a limit of 1000 cycles of compilation ? kidding... If is true that MPIDE use a non-crippled compiler then, why not using it? Or, what is the reason or the logic Microchip continue to offer crippled versions of their compilers? Anybody knows something about that? Vasi Hobbit name: Togo Toadfoot of Frogmorton Elvish name: Mablung Miriel Beyound Arduino Lang |
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Geoffg Guru Joined: 06/06/2011 Location: AustraliaPosts: 3194 |
The MPLAB C32 compiler will install as a trial version and has no restrictions other than a time limit of (I think) 60 days. After the time limit it will turn into the Lite version which has two limitations; a max optimisation level of 1 and no 16 bit code. At any time you can enter a serial number that will convert it to the full version without restrictions. As far as I know this behaviour is the same regardless of the version or type of IDE used. Geoff Geoff Graham - http://geoffg.net |
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| vasi Guru Joined: 23/03/2007 Location: RomaniaPosts: 1697 |
Hi Geoff, Thanks, this is also what I know about MPLAB C32... what do you know about the compiler which come with the MPIDE? Vasi Hobbit name: Togo Toadfoot of Frogmorton Elvish name: Mablung Miriel Beyound Arduino Lang |
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| vasi Guru Joined: 23/03/2007 Location: RomaniaPosts: 1697 |
From the platforms.txt file from MPIDE package seems that the -O2 flag is used by default. It seems that is about a non-crippled compiler! Vasi Hobbit name: Togo Toadfoot of Frogmorton Elvish name: Mablung Miriel Beyound Arduino Lang |
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| vasi Guru Joined: 23/03/2007 Location: RomaniaPosts: 1697 |
In this thread you can see a different Microchip politic. And bellow is the content of platforms.txt file: [code] ############################################################ ## pic32.recipe.c.o.pattern={0}{1}::{2}::{3}{4}::-DF_CPU={5}::- D{6}::-D{7}::{8}::{9}::{10}::-o::{11} pic32.recipe.cpp.o.pattern={0}{1}::{2}::{3}{4}::-DF_CPU={5}: :-D{6}::-D{7}::{8}::{9}::{10}::-o::{11} pic32.recipe.ar.pattern={0}{1}::{2}::{3}{4}::{5} pic32.recipe.c.combine.pattern={0}{1}::{2}::{3}{4}::-o::{5}{ 6}.elf::{7}::{8}::-L{9}::-lm::-T::{10}/{11} pic32.recipe.objcopy.eep.pattern={0}{1}::{2}::{3}.elf::{4}.e ep pic32.recipe.objcopy.hex.pattern={0}{1}::{2}::{3}.elf ######################################################## pic32.name=chipKit #pic32.compiler.path=/opt/local/pic32/install-image/bin/ #pic32.compiler.path=/opt/pic32-tools/bin/ #pic32.compiler.path=C:\pic32-tools\bin\ #pic32.compiler.path=/opt/mac-pic32/bin/ pic32.compiler.c.cmd=pic32-gcc pic32.compiler.path={0}/hardware/pic32/compiler/pic32-tools/ bin/ pic32.compiler.c.flags=-O2::-c::-mno-smart-io::-w::-ffunctio n-sections::-fdata-sections::-g::-mdebugger::-Wcast-align pic32.compiler.cpp.cmd=pic32-g++ pic32.compiler.cpp.flags=-O2::-c::-mno-smart-io::-w::-fno-ex ceptions::-ffunction-sections::-fdata-sections::-g::-mdebugg er::-Wcast-align pic32.compiler.S.flags=-O2::-g1::-c pic32.compiler.ar.cmd=pic32-ar pic32.compiler.ar.flags=rcs pic32.compiler.objcopy.cmd=pic32-objcopy pic32.compiler.objcopy.eep.flags=-O::ihex::-j::.eeprom::--se t-section-flags=.eeprom=alloc,load::--no-change-warnings::-- change-section-lma::.eeprom=0 pic32.compiler.elf2hex.flags=-a pic32.compiler.elf2hex.cmd=pic32-bin2hex #pic32.compiler.elf2hex.flags=-O::ihex::-R::.eeprom #pic32.compiler.elf2hex.cmd=pic32-objcopy pic32.compiler.c.elf.flags=-Os::-Wl,--gc-sections::-mdebugge r pic32.compiler.c.elf.cmd=pic32-g++ pic32.compiler.cpudef=-mprocessor= #pic32.compiler.ldflags= pic32.compiler.ldscript=chipKIT-BL.ld #pic32.compiler.includepath=/opt/local/pic32/install-image/p ic32mx/include pic32.compiler.upload.cmd= pic32.compiler.includepath={0}/hardware/pic32/compiler/pic32 -tools/pic32mx/include pic32.compiler.upload.flags= #pic32.library.path=./hardware/pic32/cores/pic32 pic32.library.path=./hardware/pic32/cores/pic32 pic32.ldscript=chipKIT-BL-mega.ld pic32.library.core.path=./hardware/pic32/libraries pic32.compiler.define=:: [/code] Hobbit name: Togo Toadfoot of Frogmorton Elvish name: Mablung Miriel Beyound Arduino Lang |
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| Geoffg Guru Joined: 06/06/2011 Location: AustraliaPosts: 3194 |
Ah! Sorry, I was not following the thread as closely as I should have. As far as I know it does have full optimisation but I have not played with it so you are ahead of me. Geoff Geoff Graham - http://geoffg.net |
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