AN131

Rev. 1.3

7

Software Examples

Example 1

//-----------------------------------------------------------------------------

// F12x_INIT_1.c

//-----------------------------------------------------------------------------

// Copyright 2002 Cygnal Integrated Products, Inc.

//

// AUTH: FB

// DATE: 19 SEP 02

//

// This file contains example initialization routines for the C8051F12x series

// of devices.

//

// This program uses the the 24.5 MHz internal oscillator multiplied by two

// for an effective SYSCLK of 49 MHz. This program also initializes and uses

// UART1 at <BAUDRATE> bits per second.

//

//

// Target: C8051F12x

// Tool chain: KEIL C51 6.03 / KEIL EVAL C51

//

//-----------------------------------------------------------------------------

// Includes

//-----------------------------------------------------------------------------

#include <c8051f120.h>

// SFR declarations

#include <stdio.h>

// printf() and getchar()

//-----------------------------------------------------------------------------

// 16-bit SFR Definitions for 'F12x

//-----------------------------------------------------------------------------

sfr16 DP

= 0x82;

// data pointer

sfr16 ADC0

= 0xbe;

// ADC0 data

sfr16 ADC0GT

= 0xc4;

// ADC0 greater than window

sfr16 ADC0LT

= 0xc6;

// ADC0 less than window

sfr16 RCAP2

= 0xca;

// Timer2 capture/reload

sfr16 RCAP3

= 0xca;

// Timer3 capture/reload

sfr16 RCAP4

= 0xca;

// Timer4 capture/reload

sfr16 TMR2

= 0xcc;

// Timer2

sfr16 TMR3

= 0xcc;

// Timer3

sfr16 TMR4

= 0xcc;

// Timer4

sfr16 DAC0

= 0xd2;

// DAC0 data

sfr16 DAC1

= 0xd2;

// DAC1 data

sfr16 PCA0CP5

= 0xe1;

// PCA0 Module 5 capture

sfr16 PCA0CP2

= 0xe9;

// PCA0 Module 2 capture

sfr16 PCA0CP3

= 0xeb;

// PCA0 Module 3 capture

sfr16 PCA0CP4

= 0xed;

// PCA0 Module 4 capture

sfr16 PCA0

= 0xf9;

// PCA0 counter

sfr16 PCA0CP0

= 0xfb;

// PCA0 Module 0 capture

sfr16 PCA0CP1

= 0xfd;

// PCA0 Module 1 capture