wuxi_stl的专栏

把我用的串口通讯程序（中断方式）搭个便车让大家看看，并非原创，从＜＜嵌入式系统构件＞＞的相关代码移植而来。#include "../inc/includes.h"char xdata ser_buffer[SERIAL_BUFF_SIZE];  /* the receive buffer*/int ser_end = -1;int ser_start=-1;      /* indexes

参考帖子：http://bbs.21ic.com/club/bbs/bbsView.asp?action=topicwithme程序的源代码是：#include #include unsigned int count;unsigned long sum;unsigned long error;unsigned char flag;#pragma vector = TIMER1_COMP

在帖子http://bbs.21ic.com/club/bbs/bbsView.asp?action=topicwithme上，提出以下代码不能用：struct {    unsigned unused:2;    unsigned Key5:    1;    unsigned Key6:    1;    unsigned Key4:    1;    unsigned Key3:    

字节颠倒用什么方法最好?刚刚看到21ic上面侃单片机  中的讨论，有点意思。开始，以为在我看的书中讲过，后来一查，原来是关于little endian 和big endian的变化的：Programming Embedded Systems with C and GNU Development Tools, 2nd Edition (OReilly, 2006).chm6.3.2. E

if ((InData & (1      OutData |= 0x80 >> (7-i);}效率很低，下面的会快很多unsigned char byte_reverse(unsigned char x){    unsigned char i,y;    for(i=8; i; i--){        y         if(x & 0x01){            y++;