By Han-Way Huang, Leo Chartrand
This e-book provides an intensive creation to the Microchip PIC microcontroller relations, together with the entire PIC programming and interfacing for all of the peripheral services. A step by step method of PIC meeting language programming is gifted, with tutorials that exhibit tips to use such inherent improvement instruments similar to the built-in improvement surroundings MPLAB, PIC18 C compiler, the ICD2 in-circuit debugger, and several other demo forums. entire insurance spans the subjects of interrupts, timer capabilities, parallel I/O ports, numerous serial communications reminiscent of USART, SPI, I2C, CAN, A/D converters, and exterior reminiscence enlargement.
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Additional info for PIC microcontroller: an introduction to software and hardware interfacing
This makes bank switching unnecessary in many cases. When bank switching is needed, the movlb k instruction can be used. This instruction places the value of lz in the lower four bits of the BSR register. The result of the execution of this instruction is that it caused the data registers in bank lz to become active. 10, the a field in the PIC18 instruction allows the user to select the access bank. When writing program in assembly language, the assembler (MPASM) allows the user to use the letter A (a = 0) to specify the access bank.
The addressing modes supported by a RISC computer tend to be simple as well. The followers of the RISC philosophy believed that a simple instruction set and simple addressing modes could simplify the design of the processor and that the resultant processor could run at a faster clock rate. More important, the RISC computer takes a shorter time to design and can be put on the market sooner. The earliest RISC processors have the following common features: Pipelined instruction execution. Fixed-length instructions (all instructions are either 32 or 16 bits long].
One of the major problems with high-level languages is that the machine code compiled from a program written in a high-level language is much longer and cannot run as fast as its equivalent in the assembly language. For this reason, many time-critical programs are still written in assembly language. C language has been used extensively in MCU programming in the industry, and most MCU software tool developers provide cross C compilers. Both the C and the PIC18 assembly languages will be used throughout this text.