How to Download and Install MPLAB C Compiler for PIC18 MCUs (C18) v3.46
MPLAB C Compiler for PIC18 MCUs (C18) is a full-featured ANSI compliant C compiler for the PIC18 family of 8-bit microcontrollers. It integrates with the MPLAB IDE for easy-to-use project management and source-level debugging. It also supports a variety of optimizations, libraries, and memory models for efficient use of memory.
If you want to download and install MPLAB C Compiler for PIC18 MCUs (C18) v3.46, you can follow these steps:
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Go to https://www.microchip.com/en-us/development-tool/SW006011 and click on the \"Download\" button under the \"Standard-Eval Version\" section[^1^]. This will download a zip file containing the installer.
Extract the zip file and run the installer. Follow the instructions on the screen to complete the installation.
Launch the MPLAB IDE and select \"Project Wizard\" from the \"Project\" menu. Choose your device, language tool suite (MPLAB C18), and project name. Click \"Next\" until you finish the wizard.
Add your source files to the project and build it by clicking on the \"Build All\" button on the toolbar. You can also debug your code using MPLAB's software and hardware debug engines.
Note that the Standard-Eval Version of MPLAB C Compiler for PIC18 MCUs (C18) is free, but it has some limitations after 60 days of use. To purchase a full version of the compiler, please contact your local distributor or visit http://www.microchip.com/c18.
MPLAB C Compiler for PIC18 MCUs (C18) has many features that make it a powerful and versatile tool for developing applications for PIC18 microcontrollers. Some of these features are:
ANSI '89 compatibility: The compiler conforms to the ANSI X3.159-1989 standard for C programming language, with some extensions and deviations[^1^].
Integration with the MPLAB IDE: The compiler can be used within the MPLAB IDE, which provides a graphical user interface for project management, code editing, debugging, and programming[^1^].
Generation of relocatable object modules: The compiler can generate object files that can be linked with other object files or libraries to form an executable file[^1^]. This allows for enhanced code reuse and modular programming.
Compatibility with object modules generated by the MPASM assembler: The compiler can link with object files generated by the MPASM assembler, which is a tool for writing assembly code for PIC microcontrollers[^1^]. This allows for complete freedom in mixing assembly and C programming in a single project.
Transparent read/write access to external memory: The compiler can access external memory devices such as EEPROMs or flash memory using standard C syntax[^1^]. This simplifies the code and reduces the need for low-level routines.
Strong support for inline assembly: The compiler allows the insertion of assembly code within C source files using the _asm and _endasm keywords[^1^]. This gives total control over the generated code when necessary.
Efficient code generator engine with multi-level optimization: The compiler has a powerful code generator engine that can optimize the code for speed or size using various levels of optimization[^1^]. The compiler also supports procedural abstraction and extended instruction set optimizations for newer PIC18 devices.
Extensive library support: The compiler comes with a set of libraries that provide functions for common tasks such as PWM, SPI, I2C, UART, USART, string manipulation and math operations[^1^]. These libraries can be easily used or modified by the user.
Full user-level control over data and code memory allocation: The compiler allows the user to specify where to place data and code objects in memory using storage qualifiers and linker options[^1^]. This gives flexibility and efficiency in memory usage.
Supports both a small (16-bit pointers) and a large (24-bit pointers) memory model: The compiler can use either a small or a large memory model depending on the size of the program and the available memory[^1^]. The small memory model uses 16-bit pointers and is suitable for programs that fit within 64K of program memory. The large memory model uses 24-bit pointers and can access up to 2M of program memory.
MPLIB allows easy use of included libraries and for user created libraries: MPLIB is a librarian tool that can create or manipulate library files containing object modules[^1^]. It can be used to add, delete, list, or extract object modules from a library file. It can also create an index file that contains information about the symbols defined in a library file.
Extensive multi-pass optimizations: The compiler performs multiple passes over the source code to perform various optimizations such as constant folding, common subexpression elimination, dead code elimination, loop invariant code motion, peephole optimization, register allocation, instruction scheduling, etc.[^3^]
Supports new PIC18F extended mode instructions: The compiler can generate code that uses the extended mode instructions of some PIC18F devices[^3^]. These instructions include MOVFF (move between any two registers), TBLRD* (read from program memory), TBLWT* (write to program memory), MOVSF (move between any register and access bank), ADDFSR (add literal to FSR), BRA (branch always), RCALL (relative call), RETLW (return with literal in WREG), etc.
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