微打印机C程序

微型打印机的C语言源程序

#define uchar unsigned char

#define uint unsigned int

#include <reg52h>

#include <stdioh>

#include <absacch>

#include <mathh>

#include <stringh>

#include <ctypeh>

#include <stdlibh>

#define PIN XBYTE[0x8000]

#define POUT XBYTE[0x9000]

sbit PRINTSTB =P1^6;

sbit DOG=P1^7;

bdata char pinvalue;

sbit PRINTBUSY=pinvalue^7;

sbit PRINTSEL =pinvalue^6;

sbit PRINTERR =pinvalue^5;

sbit PRINTACK =pinvalue^4;

void PrintString(uchar String1,uchar String2);

void initprint(void);

void print(uchar a);

void initprint(void) //打印机初始化子程序

{

pinvalue=PIN;

if((PRINTSEL==1)&&(PRINTERR==1))

{

print(0x1b); print(0x40); print(0x1b); print(0x38); print(0x4);

}

}

void print(uchar a) //打印字符a

{

pinvalue=PIN;

if((PRINTSEL==0)||(PRINTERR==0)) return;

for(;;) {

DOG=~DOG;

pinvalue=PIN;

if(PRINTBUSY==0) break;

}

DOG=~DOG;

POUT=a;

PRINTSTB=1; PRINTSTB=1; PRINTSTB=1; PRINTSTB=1;

PRINTSTB=0; PRINTSTB=0; PRINTSTB=0; PRINTSTB=0;

PRINTSTB=1;

}

void PrintString(uchar String) //打印字符串后回车

{

uchar CH;

for (;;) {

DOG=~DOG;

CH=String;

if (CH==0) { print(0x0d); break; }

print(CH);

String++;

}

initprint();

}

希望对你有点帮助!

使用<>的都是C编译器内部自带的H文件!而自定义的H文件上用""

你是刚学单片机编程的新手吧

reg52h引用的外部资源文件，这个文件包括了硬件信息和外部模块提供的可使用的函数和变量的说明。可以用文本方式打开reg52h，仔细研究下，会有一些写程序的体会。

absacch :利用它可十分方便地实现对任何内存空间的直接 *** 作

楼上可以得到图形，就是循环太多了点，加判断应该更好点。

public class Test {

public static void main(String[] args){

int size=9;

for(int i=size;i>0;i=i-2){

for(int j=0;j<=size;j++){

if(j>i/2&&j<=size-i/2)Systemoutprint("");

else Systemoutprint(" ");

}

Systemoutprintln("");

}

}

}

/ A simple quine (self-printing program), in standard C /

/ Note: in designing this quine, we have tried to make the code clear

and readable, not concise and obscure as many quines are, so that

the general principle can be made clear at the expense of length

In a nutshell: use the same data structure (called "progdata"

below) to output the program code (which it represents) and its own

textual representation /

#include <stdioh>

void quote(const char s)

/ This function takes a character string s and prints the

textual representation of s as it might appear formatted

in C code /

{

int i;

printf(" \"");

for (i=0; s[i]; ++i) {

/ Certain characters are quoted /

if (s[i] == '\\')

printf("\\\\");

else if (s[i] == '"')

printf("\\\"");

else if (s[i] == '\n')

printf("\\n");

/ Others are just printed as such /

else

printf("%c", s[i]);

/ Also insert occasional line breaks /

if (i % 48 == 47)

printf("\"\n \"");

}

printf("\"");

}

/ What follows is a string representation of the program code,

from beginning to end (formatted as per the quote() function

above), except that the string _itself_ is coded as two

consecutive '@' characters /

const char progdata[] =

"/ A simple quine (self-printing program), in st"

"andard C /\n\n/ Note: in designing this quine, "

"we have tried to make the code clear\n and read"

"able, not concise and obscure as many quines are"

", so that\n the general principle can be made c"

"lear at the expense of length\n In a nutshell:"

" use the same data structure (called \"progdata\"\n"

" below) to output the program code (which it r"

"epresents) and its own\n textual representation"

" /\n\n#include <stdioh>\n\nvoid quote(const char "

"s)\n / This function takes a character stri"

"ng s and prints the\n textual representati"

"on of s as it might appear formatted\n in "

"C code /\n{\n int i;\n\n printf(\" \\\"\");\n "

" for (i=0; s[i]; ++i) {\n / Certain cha"

"racters are quoted /\n if (s[i] == '\\\\')"

"\n printf(\"\\\\\\\\\");\n else if (s["

"i] == '\"')\n printf(\"\\\\\\\"\");\n e"

"lse if (s[i] == '\\n')\n printf(\"\\\\n\");"

"\n / Others are just printed as such /\n"

" else\n printf(\"%c\", s[i]);\n "

" / Also insert occasional line breaks /\n "

" if (i % 48 == 47)\n printf(\"\\\"\\"

"n \\\"\");\n }\n printf(\"\\\"\");\n}\n\n/ What fo"

"llows is a string representation of the program "

"code,\n from beginning to end (formatted as per"

" the quote() function\n above), except that the"

" string _itself_ is coded as two\n consecutive "

"'@' characters /\nconst char progdata[] =\n@@;\n\n"

"int main(void)\n / The program itself /\n"

"{\n int i;\n\n / Print the program code, cha"

"racter by character /\n for (i=0; progdata[i"

"]; ++i) {\n if (progdata[i] == '@' && prog"

"data[i+1] == '@')\n / We encounter tw"

"o '@' signs, so we must print the quoted\n "

" form of the program code /\n {\n "

" quote(progdata); / Quote all /\n"

" i++; / Skip second '"

"@' /\n } else\n printf(\"%c\", p"

"rogdata[i]); / Print character /\n }\n r"

"eturn 0;\n}\n";

int main(void)

/ The program itself /

{

int i;

/ Print the program code, character by character /

for (i=0; progdata[i]; ++i) {

if (progdata[i] == '@' && progdata[i+1] == '@')

/ We encounter two '@' signs, so we must print the quoted

form of the program code /

{

quote(progdata); / Quote all /

i++; / Skip second '@' /

} else

printf("%c", progdata[i]); / Print character /

}

return 0;

}

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