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On the other hand, the gains from full options are not particularly huge, but it doesn't hurt anyway. So, what is described here is option to get full optimization level of XC16 compiler without need to recompile the sources, what is far from being simple task. At Os (where code size is main factor) it gets 20B lower, at O3 (where speed is at premium, code size is secondary) it indeed runs a bit faster. It's apparent that with options the compiler tries a bit harder. I took my LLG sources and performed tests on them (code size and execution time of geolocation algorithm), using all levels of optimizations with and without additional options as desribed here. Notice the resulting binary is indeed a bit smaller, though at -O1 optimization (as if the optimization beyond -01 would be prohibited) is the binary even bigger - not sure about this one. I created file cmd.txt containing single lineĪnd in project settings I opted to use this file When compiling from command line using make or similar tool, it should be straightforward, within MPLABX IDE it works like this: So, entering -mafrlcsj option into command line should be equal to having proper license. The option is entered via command line entry, being described in pic30.opt file, line 228: Never mind, lets look further.īy setting proper value into 'mchp_mafrlcsj' we can omit the license check. So this is where optimizations warning are being emitted. The variable 'pic30_license_valid' is being set on results of xclm, license checker. At line 3707 of file pic30.c, there is block of code In PIC30 directory there are files pic30.opt and pic30.c being of interest. In directory v1.33.srcsrcXC_GCCgccgccconfig are all targets, including the ones for XC16 /PIC30/ - because originally the compiler was meant for dsPIC30 DSPs, PIC24 and dsPIC33 being derivatives of dsPIC30) - as well as PIC32 /PIC32/.
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The archive contains almost 10.000 files in 5200 directories, so I unziped it on temporary location.
I downloaded soruces for XC16 1.33 from here. That is where story could end, but I went further. That's what i did on LLG, where I built the code with -O3 and code execution is indeed faster than with -O1. Compiler complains I have no valid license, but the code builds and runs just fine, with apparent results of compiler optimization efforts. In fact, I'm able to use optimizations higher than -O1 on free version.
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Though the sources are available, in professional circles not everybody will spent their expensive time building the compiler (that is far from being trivial exercise) with nobody to ask questions, so they buy directly the full version plus support from Microchip. Better than -O1 compiler options are fine for squeezing last bits of optimization efforts, though - that's why the paid version exists. Less known fact is that source codes of XC16 are available and free to download, probably mostly to satisfy GNU license requirements. Honestly, I'm OK with all three points for hobby projects, though I try to use 8- or 32-bitters, where open source compilers are available. MPLAB XC16 C Compiler installs the following the executables on your PC, occupying about 96.30 MB ( 100973314. The program's main executable file has a size of 72.89 KB (74640 bytes) on disk and is titled xc16-ar.exe. The complete uninstall command line for MPLAB XC16 C Compiler is C: Program Files Microchip xc16 v1.50 Uninstall-xc16-v1.50.exe. Get MPLAB XC16 C Compiler alternative downloads. Trusted Windows (PC) download MPLAB XC16 C Compiler 1.41.
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CCS PCWH PCW Patch Embedded C Compiler for Microchip vista microchip xc8 activation key tester 16f876 xc8. Problems with license changing from C18 to XC8 – Microchip. MPLAB XC8 PRO CRACK microchip xc8 activation key DOWNLOAD. Hi All, I have installed XC8 1.34, but cannot get it licensed.I have 1.33, which is licensed.Firstly I just obeyed the 'If your Compiler is already licensed, Click. Tools Mplab xc16 pro compiler crack Microchip XC8 1. As I was playing with my LLG project, I spent a few moments with exploring XC16 compiler.