33FJ128GP708 datasheet(50/90 Pages) MICROCHIP

50 / 90 page

dsPIC33F

DS70155C-page 48

Preliminary

11.2

Peripheral Driver Library

Microchip offers a free peripheral driver library that

supports the setup and control of dsPIC33F hardware

peripherals, including, but not limited to:

• Analog-to-Digital Converter

• Motor Control PWM

• Quadrature Encoder Interface

•UART

• SPI™

• Data Converter Interface

•I2C™

• General Purpose Timers

• Input Capture

• Output Compare/Simple PWM

•CAN

• I/O Ports and External Interrupts

•Reset

In addition to the hardware peripherals, the library

supports software generated peripherals, such as

standard LCD drivers, which support an Hitachi style

controller.

The peripheral library consist of more than 270

functions, as well as several macros for simple tasks

such as enabling and disabling interrupts. All peripheral

driver routines are developed and optimized using the

MPLAB C30 C Compiler. Electronic documentation

accompanies the peripheral library to help you become

familiar with and implement the library functions.

Key features of the dsPIC33F Peripheral Library

include:

• A library file for each individual device from the

dsPIC33F family, including functions

corresponding to peripherals present in that

particular device.

•‘C’ include files that let you take advantage of

predefined constants for passing parameters to

various library functions. There is an include file

for each peripheral module.

• Since the functions are in the form of precompiled

libraries, they can be called from a user

application program written in either MPLAB C30

C Compiler or dsPIC33F assembly language.

• Included ‘C’ source code allows you to customize

peripheral functions to suit your specific

application requirements.

• Predefined constants in the ‘C’ include files

eliminate the need to refer to the details and

structure of every Special Function Register while

initializing peripherals or checking status bits.

11.3

DSP Algorithm Library

The free DSP library supports multiple filtering,

convolution, vector and matrix functions. Among the

supported functions are:

• Cascaded Infinite Impulse Response (IIR) Filters

•Correlation

• Convolution

• Finite Impulse Response (FIR) Filters

• Windowing Functions

•FFTs

• LMS Filter

• Vector Addition and Subtraction

• Vector Dot Product

•Vector Power

• Matrix Addition and Subtraction

• Matrix Multiplication

Some

DSP

functions

use

double-precision

and

floating-point

arithmetic.

All

DSP

routines

are

developed and optimized in dsPIC33F assembly

language and are callable from both assembly and ‘C’

language. The Microchip MPLAB C30 and IAR C

Compilers are supported.

Key features of the DSP Algorithm Library include:

• 49 total functions

• Full compliance with the Microchip dsPIC33F C30

C Compiler, Assembler and Linker

• Simple user interface – just one library file and

one header file

• Functions are both ‘C’ and assembly callable

• FIR filtering functions include support for Lattice,

Decimating, Interpolating and LMS filters

• IIR filtering functions include support for Canonic,

Transposed Canonic and Lattice filters

• FIR and IIR functions may be used with the filter

files generated by the dsPIC33F Filter Design

program

• Transform functions include support for in-place

and out-of-place DCT, FFT and IFFT transforms

• Window functions include support for Bartlett,

Blackman, Hamming, Hanning and Kaiser

windows

• Support for Program Space Visibility

• Complete function profile information including

information

• Electronic documentation is included to help you

comprehend and use the library functions

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