实验1 LED流水灯的设计.doc

实验1 LED流水灯的设计实验目的：熟悉CCS5.4及DY-FFTB6638实验箱。重点难点：LED流水灯的软件编程方法。一 CCS介绍Code Composer Studio是TI嵌入式处理器系列的IDE，可在Windows和Linux PC上运行，用于TI器件的源码编译等功能.二 CCS的安装过程（略）三 实验内容DY-FFTB6638实验箱上3个LED定时翻转，实现闪烁效果。四 LED流水灯的实验原理DY-FFTB6638实验箱的LED硬件电路如下：五 设计参考代码/*/ (1) MSP430F6638_LED1.c/ MSP430F6638 Demo - Software Toggle P4/ Description: Toggle P4 by xoring P4 inside of a software loop./ ACLK = 32.768kHz, MCLK = SMCLK = default DCO1MHz/ MSP430F6638/ -/ /| |/ | | |/ -|RST P4.4|-LED_RED/ | P4.5|-LED_GREEN/ | P4.6|-LED_YELLOW/*#define P3P4_BASE_Address0x0220#define BIT4(0x0010)#define BIT5(0x0020)#define BIT6(0x0040)#define P4DIR(*(volatile unsigned char*)(P3P4_BASE_Address + 0x05)#define P4OUT(*(volatile unsigned char*)(P3P4_BASE_Address + 0x03)void main(void)volatile unsigned int i;P4DIR |= BIT4 + BIT5 + BIT6;/ P4.4,P4.5,P4.6 set as outputwhile(1)/ continuous loopP4OUT = BIT4 + BIT5 + BIT6;/ XOR P4.4,P4.5,P4.6for(i=20000;i0;i-);/ Delay/*/ (2)MSP430F6638_LED2.c/ MSP430F6638 Demo - Software Toggle P4/ Description: Toggle P4 by xoring P4 inside of a software loop./ ACLK = 32.768kHz, MCLK = SMCLK = default DCO1MHz/ MSP430F6638/ -/ /| |/ | | |/ -|RST P4.4|-LED_RED/ | P4.5|-LED_GREEN/ | P4.6|-LED_YELLOW/*#include void main(void)volatile unsigned int i;WDTCTL = WDTPW+WDTHOLD;/ Stop WDTP4DIR |= BIT4 + BIT5 + BIT6;/ P4.4,P4.5,P4.6 set as outputwhile(1)/ continuous loopP4OUT = BIT4 + BIT5 + BIT6;/ XOR P4.4,P4.5,P4.6for(i=20000;i0;i-);/ Delay六 总结对于同样的软件延时语句“for(i=