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PIC Micro Controller C/C++ Languages


There is a constant flow of debate over the use of C or Assembly to program microcontrollers. While it is true that C compilers may generate less efficient code from a quickly written line of C than a human working in hand coded / hand optimized assembly, in most cases, well written C compilers can come very close. In some cases, a C compiler can optimize code in a way that would be very difficult for a human, even surpassing well written human assembly when very complex constructs are involved. Byte Craft did an interesting test on one of thier C compilers^ where they verified that for every instruction in the processors instruction set, there is some C sequence that compiles into that single instruction. At least with that compiler, for every possible Assembly program there exists a C program that generates the same (if not less) code.

C17/C18 http://www.microchip.com/1010/pline/tools/picmicro/code/mplab18/index.htm The "official" Microchip versions of C. That link will most likely be wrong in a few days since Microchip apparently rearranges the web site on a weekly basis, but if you go to microchip.com and search for C18, you will find it.

Byte Craft http://www.bytecraft.com/  MPC (Microchip PIC Compiler). ByteCraft developed the first C compiler for the PIC and Microchip licensed that code as a start on MPLAB C although it has been developed seperatly since then. MPC goes for $1,750.00^ USD. There is a demo version, but I have no information on the limitations.

Hi-Tech http://www.htsoft.com/ FREE! PICC-Lite is essentially the same as our full-featured, industrial grade PICC compiler, support is limited to the 16F877, 16F877A, 12F675, 12F629, 16F627, 16C84, 16F84 and 16F84A devices. MPLAB compatible. In March 2009, Microchip aquired Hi-Tech and will narrow thier focus to Microchip products.

C2C http://www.geocities.com/SiliconValley/Network/3656/c2c/c.html C-compiler runs on Win-95, DOS and Linux and compiles for PIC and SX

CC5X http://www.bknd.com/ optomizing C-compiler (free limited version, up to 1 kB, integrates with MPLAB?) all 14- and 12-bit PIC

CCS http://ccsinfo.com/  C-Compiler (usefull examples can be downloaded) James Newton says: "Based on (clumsy) link spamming, shoddy support for the SX (PIC clone) and bad personal experiences, I do NOT recommend this compiler. Your milage may vary."

Wiz-C http://www.fored.co.uk 70 to 100 pounds UK. Grew from: PicC http://members.aol.com/piccompile/products.htm  C-Compiler $59, source level debugger $79. ?

pico-C http://personal.eunet.fi/pp/jokinen/ produces assembler code (free)

Visual C http://home.t-online.de/home/Swen.Gosch/epic.htm free demo

Linux:

SDCC the Small Device C Compiler

Several people have started developing IDEs to connect to SDCC.

Small-C for the PIC'84 http://http://www.gnupic.org/compile/pic_cc.zip John Favata's modification of Small-C for the PIC '84 that generates Parallax SPASM assembly code.

http://ejames2.freeyellow.com/GGC.htm A free beta release of a new PIC18Cxxx compiler

Also:

Comments:

Questions: 

Ned T Konz of MetaMagix Says:

The PIC C compiler from Microchip has hardly disappeared. They just don't have any support for the 12-bit and 14-bit parts.

But you can get demos of the C17 and C18 compilers. The C18 especially bears looking at; it produces good code and is reasonably ANSI compatible.
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See also:

Questions:

Says:

C2C with SourceBoost has an excellent PIC16xxx simulator with it, which requires no additional hardware, AND has 'plug-in' simulated hardware (like LED's, buttons, even an 8-bit logic analyzer).
You should be aware that C2C is a subset of Ansi C, with 8 and 16-bit unsigned math only. However, the assembly output is very easy to follow.

The CCS-C compiler is Ansi-C with extensions for the PIC. However, it's source-level debugger requires attached PIC hardware to work.
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file: /Techref/microchip/language/cs.htm, 11KB, , updated: 2009/3/9 10:14, local time: 2014/10/30 11:16, owner: SM-SRTS-QCA,
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