RIT image generator
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Hello eLuers :)
To relax a bit on this busy weekend, I've written a simple lua utility to convert raw image files into the format used by the imagedraw function, of the platform-dependent disp module. The disp module currently implements functions only for the OLED display found in some Luminary Micro ARM Cortex-M2 evaluation kits. I will write a small tutorial about this but the main receipe is to convert any image to: - Size: 128x96 - Color: Grayscale, 16 shades of gray - Mode: 8 bits per pixel (although each pixels uses only 4) - Record as: .raw (no image info added on file) Some more explanations on the raw and rit formats can be found in the utility's source code. Program usage is: raw2disp.lua <raw_filename_without_extension> If you don't have a lua interpreted on the default lua install dir but has one in your path, pls run as: lua raw2rit.lua <raw_filename_without_extension> Program can be viewed/downloaded from http://www.giga.puc-rio.br/raw2rit.lua Thanks to Pedro Bittencourt for the help with image formats. Pedro also has a C version of the utility, in case someone needs it. The Lua version uses an external module (bitlib) and the C version doesn't. Please share your nice images for the RIT display !!! :) Best Dado -------------- next part -------------- An HTML attachment was scrubbed... URL: https://lists.berlios.de/pipermail/elua-dev/attachments/20090215/cb3c7c66/attachment.html |
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Dado,
I believe 128x96p isn't a requirement, the converter just need an even number o pixels. That the user must set on disp.imageDraw ( image, offsetX,offsetY,width,height), right? --Pedro Bittencourt On Sun, Feb 15, 2009 at 11:17 AM, Dado Sutter <dadosutter at gmail.com> wrote: > Hello eLuers :) > To relax a bit on this busy weekend, I've written a simple lua utility > to convert raw image files into the format used by the imagedraw function, > of the platform-dependent disp module. The disp module currently implements > functions only for the OLED display found in some Luminary Micro ARM > Cortex-M2 evaluation kits. > I will write a small tutorial about this but the main receipe is to > convert any image to: > > - Size: 128x96 > - Color: Grayscale, 16 shades of gray > - Mode: 8 bits per pixel (although each pixels uses only 4) > - Record as: .raw (no image info added on file) > > Some more explanations on the raw and rit formats can be found in the > utility's source code. > Program usage is: raw2disp.lua <raw_filename_without_extension> > If you don't have a lua interpreted on the default lua install dir but > has one in your path, pls run as: lua raw2rit.lua > <raw_filename_without_extension> > > Program can be viewed/downloaded from > http://www.giga.puc-rio.br/raw2rit.lua > > Thanks to Pedro Bittencourt for the help with image formats. Pedro also > has a C version of the utility, in case someone needs it. The Lua version > uses an external module (bitlib) and the C version doesn't. > > Please share your nice images for the RIT display !!! :) > > Best > Dado > > > _______________________________________________ > Elua-dev mailing list > Elua-dev at lists.berlios.de > https://lists.berlios.de/mailman/listinfo/elua-dev > > An HTML attachment was scrubbed... URL: https://lists.berlios.de/pipermail/elua-dev/attachments/20090215/5db35069/attachment.html |
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Hello,
On Sun, Feb 15, 2009 at 11:39, Pedro Bittencourt < pedrobittencourt87 at gmail.com> wrote: > Dado, > > I believe 128x96p isn't a requirement, the converter just need an even > number o pixels. That the user must set on disp.imageDraw ( image, > offsetX,offsetY,width,height), right? Right, indeed ! The program can also be used to convert/generate "sprites", that will later be positioned or moved across the display, using the positioning parameters of disp.imagedraw (pls note that syntax may change in v0.6). So the images can be smaller than 128x96 pixels and the program will still convert them correctly. When I mentioned "Size" on the instructions, I should have said "Maximum Size". Thanks ! --Pedro Bittencourt Dado > > > > On Sun, Feb 15, 2009 at 11:17 AM, Dado Sutter <dadosutter at gmail.com>wrote: > >> Hello eLuers :) >> To relax a bit on this busy weekend, I've written a simple lua utility >> to convert raw image files into the format used by the imagedraw function, >> of the platform-dependent disp module. The disp module currently implements >> functions only for the OLED display found in some Luminary Micro ARM >> Cortex-M2 evaluation kits. >> I will write a small tutorial about this but the main receipe is to >> convert any image to: >> >> - Size: 128x96 >> - Color: Grayscale, 16 shades of gray >> - Mode: 8 bits per pixel (although each pixels uses only 4) >> - Record as: .raw (no image info added on file) >> >> Some more explanations on the raw and rit formats can be found in the >> utility's source code. >> Program usage is: raw2disp.lua <raw_filename_without_extension> >> If you don't have a lua interpreted on the default lua install dir but >> has one in your path, pls run as: lua raw2rit.lua >> <raw_filename_without_extension> >> >> Program can be viewed/downloaded from >> http://www.giga.puc-rio.br/raw2rit.lua >> >> Thanks to Pedro Bittencourt for the help with image formats. Pedro also >> has a C version of the utility, in case someone needs it. The Lua version >> uses an external module (bitlib) and the C version doesn't. >> >> Please share your nice images for the RIT display !!! :) >> >> Best >> Dado >> >> >> _______________________________________________ >> Elua-dev mailing list >> Elua-dev at lists.berlios.de >> https://lists.berlios.de/mailman/listinfo/elua-dev >> >> > > _______________________________________________ > Elua-dev mailing list > Elua-dev at lists.berlios.de > https://lists.berlios.de/mailman/listinfo/elua-dev > > An HTML attachment was scrubbed... URL: https://lists.berlios.de/pipermail/elua-dev/attachments/20090215/f3114133/attachment.html |
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I'm beginning to understand the width of eLua. First, I thought it's "only" about fitting to SoC's but if also networking and LCD displays are included, we could do projects s.a. a feather-light webserver, with graphical status display, right? Think NAS but running without an OS (in other words, Lua would _be_ the OS). Is this feasible, and does eLua currently allow such without an underlying operating system? In more detail, what exactly is the relationship of operating system and eLua? Which OSes are available, and for which features would one need them (think file systems, USB 2.0, networking, pre-emptive multithreading). -asko Dado Sutter kirjoitti 15.2.2009 kello 16:58: > Hello, > > On Sun, Feb 15, 2009 at 11:39, Pedro Bittencourt <pedrobittencourt87 at gmail.com > > wrote: > Dado, > > I believe 128x96p isn't a requirement, the converter just need an > even number o pixels. That the user must set on disp.imageDraw > ( image, offsetX,offsetY,width,height), right? > > Right, indeed ! > The program can also be used to convert/generate "sprites", that > will later be positioned or moved across the display, using the > positioning parameters of disp.imagedraw (pls note that syntax may > change in v0.6). So the images can be smaller than 128x96 pixels and > the program will still convert them correctly. > > When I mentioned "Size" on the instructions, I should have said > "Maximum Size". > Thanks ! > > --Pedro Bittencourt > > Dado > > > > > > > > > On Sun, Feb 15, 2009 at 11:17 AM, Dado Sutter <dadosutter at gmail.com> > wrote: > Hello eLuers :) > To relax a bit on this busy weekend, I've written a simple lua > utility to convert raw image files into the format used by the > imagedraw function, of the platform-dependent disp module. The disp > module currently implements functions only for the OLED display > found in some Luminary Micro ARM Cortex-M2 evaluation kits. > I will write a small tutorial about this but the main receipe is > to convert any image to: > > - Size: 128x96 > - Color: Grayscale, 16 shades of gray > - Mode: 8 bits per pixel (although each pixels uses only 4) > - Record as: .raw (no image info added on file) > > Some more explanations on the raw and rit formats can be found in > the utility's source code. > Program usage is: raw2disp.lua <raw_filename_without_extension> > If you don't have a lua interpreted on the default lua install dir > but has one in your path, pls run as: lua raw2rit.lua > <raw_filename_without_extension> > > Program can be viewed/downloaded from http://www.giga.puc-rio.br/raw2rit.lua > > Thanks to Pedro Bittencourt for the help with image formats. Pedro > also has a C version of the utility, in case someone needs it. The > Lua version uses an external module (bitlib) and the C version > doesn't. > > Please share your nice images for the RIT display !!! :) > > Best > Dado > > > _______________________________________________ > Elua-dev mailing list > Elua-dev at lists.berlios.de > https://lists.berlios.de/mailman/listinfo/elua-dev > > > > _______________________________________________ > Elua-dev mailing list > Elua-dev at lists.berlios.de > https://lists.berlios.de/mailman/listinfo/elua-dev > > > _______________________________________________ > Elua-dev mailing list > Elua-dev at lists.berlios.de > https://lists.berlios.de/mailman/listinfo/elua-dev |
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Hello eLuers,
On Sun, Feb 15, 2009 at 15:44, Asko Kauppi <askok at dnainternet.net> wrote: > > I'm beginning to understand the width of eLua. > > First, I thought it's "only" about fitting to SoC's but if also > networking and LCD displays are included, we could do projects s.a. a > feather-light webserver, with graphical status display, right? Yeap, A Lua scriptable webserver is already included and I though you migh like to hear that it will become more "Kepler-like" in the near future. Think > NAS but running without an OS (in other words, Lua would _be_ the OS). > > Is this feasible, and does eLua currently allow such without an > underlying operating system? Absolutely. eLua is all you need to flash into your MCUs, no OS underneath is necessary. All the development can (or will soon) be done directly in the target, thru the use of a terminal over a serial or ethernet connection. This is already working but the FS is still a read-only one, for now. eLua includes a small shell too and in the future, if your platform's memory allows, will also include an IDE to help newcomers. > > > In more detail, what exactly is the relationship of operating system > and eLua? There is only bare metal below eLua. > Which OSes are available, None. > and for which features would one > need them (think file systems, USB 2.0, networking, pre-emptive > multithreading). This deserves a whole thread :) eLua has a simple read-only file system today, that will be enhanced soon. Support for SDCard (over SPI) is already available but not fully tested yet. Preemptive multitasking would be implemented running several LuaStates under an RTOS but this is not in the scope of the project at the moment. USB 2.0 and other peripherals are beeing implemented wrapping and binding (to Lua) manufacturer's drivers library code, when possible or adding dedicated drivers. -asko Best Dado > > > > Dado Sutter kirjoitti 15.2.2009 kello 16:58: > > > Hello, > > > > On Sun, Feb 15, 2009 at 11:39, Pedro Bittencourt < > pedrobittencourt87 at gmail.com > > > wrote: > > Dado, > > > > I believe 128x96p isn't a requirement, the converter just need an > > even number o pixels. That the user must set on disp.imageDraw > > ( image, offsetX,offsetY,width,height), right? > > > > Right, indeed ! > > The program can also be used to convert/generate "sprites", that > > will later be positioned or moved across the display, using the > > positioning parameters of disp.imagedraw (pls note that syntax may > > change in v0.6). So the images can be smaller than 128x96 pixels and > > the program will still convert them correctly. > > > > When I mentioned "Size" on the instructions, I should have said > > "Maximum Size". > > Thanks ! > > > > --Pedro Bittencourt > > > > Dado > > > > > > > > > > > > > > > > > > On Sun, Feb 15, 2009 at 11:17 AM, Dado Sutter <dadosutter at gmail.com> > > wrote: > > Hello eLuers :) > > To relax a bit on this busy weekend, I've written a simple lua > > utility to convert raw image files into the format used by the > > imagedraw function, of the platform-dependent disp module. The disp > > module currently implements functions only for the OLED display > > found in some Luminary Micro ARM Cortex-M2 evaluation kits. > > I will write a small tutorial about this but the main receipe is > > to convert any image to: > > > > - Size: 128x96 > > - Color: Grayscale, 16 shades of gray > > - Mode: 8 bits per pixel (although each pixels uses only 4) > > - Record as: .raw (no image info added on file) > > > > Some more explanations on the raw and rit formats can be found in > > the utility's source code. > > Program usage is: raw2disp.lua <raw_filename_without_extension> > > If you don't have a lua interpreted on the default lua install dir > > but has one in your path, pls run as: lua raw2rit.lua > > <raw_filename_without_extension> > > > > Program can be viewed/downloaded from > http://www.giga.puc-rio.br/raw2rit.lua > > > > Thanks to Pedro Bittencourt for the help with image formats. Pedro > > also has a C version of the utility, in case someone needs it. The > > Lua version uses an external module (bitlib) and the C version > > doesn't. > > > > Please share your nice images for the RIT display !!! :) > > > > Best > > Dado > > > > > > _______________________________________________ > > Elua-dev mailing list > > Elua-dev at lists.berlios.de > > https://lists.berlios.de/mailman/listinfo/elua-dev > > > > > > > > _______________________________________________ > > Elua-dev mailing list > > Elua-dev at lists.berlios.de > > https://lists.berlios.de/mailman/listinfo/elua-dev > > > > > > _______________________________________________ > > Elua-dev mailing list > > Elua-dev at lists.berlios.de > > https://lists.berlios.de/mailman/listinfo/elua-dev > > _______________________________________________ > Elua-dev mailing list > Elua-dev at lists.berlios.de > https://lists.berlios.de/mailman/listinfo/elua-dev > An HTML attachment was scrubbed... URL: https://lists.berlios.de/pipermail/elua-dev/attachments/20090215/7695b14e/attachment-0001.html |
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In reply to this post by Asko Kauppi
> First, I thought it's "only" about fitting to SoC's but if also
> networking and LCD displays are included, we could do projects s.a. a > feather-light webserver, with graphical status display, right? Think > NAS but running without an OS (in other words, Lua would _be_ the OS). That's exactly the point of eLua it: Lua is the _controller_, not just a helper (scripting) language. This view doesn't exclude the existence of an OS, but that's not currently planned. Plans can change though :) > Is this feasible, and does eLua currently allow such without an > underlying operating system? To some extent, it is. A MPU with an interrupt system (which is basically any MPU on which eLua will ever run) already provides the means to implement a very simple threading system, and sometimes this is all you need. > In more detail, what exactly is the relationship of operating system > and eLua? Which OSes are available, and for which features would one We don't have an operating system yet, so I don't know the relationship :) As for OSes, the main candidate seems to be FreeRTOS, but there are others that can be used. For which features ... this is difficult to answer. I'd say for networking, to implement something like "select" (for example) and multiple clients, but even this can be done without an OS. In the end it all depends on your needs. Best, Bogdan > Dado Sutter kirjoitti 15.2.2009 kello 16:58: > >> Hello, >> >> On Sun, Feb 15, 2009 at 11:39, Pedro Bittencourt <pedrobittencourt87 at gmail.com >> > wrote: >> Dado, >> >> I believe 128x96p isn't a requirement, the converter just need an >> even number o pixels. That the user must set on disp.imageDraw >> ( image, offsetX,offsetY,width,height), right? >> >> Right, indeed ! >> The program can also be used to convert/generate "sprites", that >> will later be positioned or moved across the display, using the >> positioning parameters of disp.imagedraw (pls note that syntax may >> change in v0.6). So the images can be smaller than 128x96 pixels and >> the program will still convert them correctly. >> >> When I mentioned "Size" on the instructions, I should have said >> "Maximum Size". >> Thanks ! >> >> --Pedro Bittencourt >> >> Dado >> >> >> >> >> >> >> >> >> On Sun, Feb 15, 2009 at 11:17 AM, Dado Sutter <dadosutter at gmail.com> >> wrote: >> Hello eLuers :) >> To relax a bit on this busy weekend, I've written a simple lua >> utility to convert raw image files into the format used by the >> imagedraw function, of the platform-dependent disp module. The disp >> module currently implements functions only for the OLED display >> found in some Luminary Micro ARM Cortex-M2 evaluation kits. >> I will write a small tutorial about this but the main receipe is >> to convert any image to: >> >> - Size: 128x96 >> - Color: Grayscale, 16 shades of gray >> - Mode: 8 bits per pixel (although each pixels uses only 4) >> - Record as: .raw (no image info added on file) >> >> Some more explanations on the raw and rit formats can be found in >> the utility's source code. >> Program usage is: raw2disp.lua <raw_filename_without_extension> >> If you don't have a lua interpreted on the default lua install dir >> but has one in your path, pls run as: lua raw2rit.lua >> <raw_filename_without_extension> >> >> Program can be viewed/downloaded from http://www.giga.puc-rio.br/raw2rit.lua >> >> Thanks to Pedro Bittencourt for the help with image formats. Pedro >> also has a C version of the utility, in case someone needs it. The >> Lua version uses an external module (bitlib) and the C version >> doesn't. >> >> Please share your nice images for the RIT display !!! :) >> >> Best >> Dado >> >> >> _______________________________________________ >> Elua-dev mailing list >> Elua-dev at lists.berlios.de >> https://lists.berlios.de/mailman/listinfo/elua-dev >> >> >> >> _______________________________________________ >> Elua-dev mailing list >> Elua-dev at lists.berlios.de >> https://lists.berlios.de/mailman/listinfo/elua-dev >> >> >> _______________________________________________ >> Elua-dev mailing list >> Elua-dev at lists.berlios.de >> https://lists.berlios.de/mailman/listinfo/elua-dev > > _______________________________________________ > Elua-dev mailing list > Elua-dev at lists.berlios.de > https://lists.berlios.de/mailman/listinfo/elua-dev > |
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