print.c

微型打印机的驱动程序

/****************************************Copyright (c)**************************************************
**                               Guangzou ZLG-MCU Development Co.,LTD.
**                                      graduate school
**                                 http://www.zlgmcu.com
**
**--------------File Info-------------------------------------------------------------------------------
** File name:			main.c
** Last modified Date:  2004-09-16
** Last Version:		1.0
** Descriptions:		The main() function example template
**
**------------------------------------------------------------------------------------------------------
** Created by:			Chenmingji
** Created date:		2004-09-16
** Version:				1.0
** Descriptions:		The original version
**
**------------------------------------------------------------------------------------------------------
** Modified by:
** Modified date:
** Version:
** Descriptions:
**
********************************************************************************************************/
#include "config.h"

void InitPrint(void)
{

	/*设置GPIO口输入输出方向 1为输出，0为输入*/
	FIO0DIR = (FIO0DIR & 0xFFFdFFFF) | DIR;//DIR 输出
	FIO0DIR = (FIO0DIR & 0xFFeFFFFF) | STB;//STB 输出
	FIO0DIR = (FIO0DIR & 0xFFFe40FF) | DB; //DB 输出
	//FIO0DIR = (FIO0DIR & 0xFFF7FFFF) | 0x00000000;//BUSY 输入
	/*相应端口屏蔽 0为可读写，1为屏蔽不可读写*/    
    //FIO0MASK = 0xFFe040FF;
    
    /*设定74hc245DIR为1，保证A->B电平转换*/
    /*set STB=1*/
    FIO0MASK = MASK_DIR;   
    FIO0SET  = DIR;
    
}

void PrintChar(uint8 data)
{
	uint32 data1;
	data1 = ((data<<8)&0x00003F00)|((data<<9)&0x00018000);
    /*set STB=1*/
    FIO0MASK = MASK_STB;
    FIO0SET = STB;   	
//	FIO0MASK = MASK_BUSY;
//	FIO0SET = BUSY;
//	while(IO0PIN & 0x00080000);
	FIO0MASK = MASK_DB;
	FIO0PIN = data1;
	
	/*set STB=0*/
	FIO0MASK = MASK_STB; 
	FIO0CLR = STB;	
	DelayNS(1);
    /*set STB=1*/
    FIO0MASK = MASK_STB;
    FIO0SET = STB;   
		
}


/*********************************************************************************************************
**                            End Of File
********************************************************************************************************/