Andy0613
136 lines
3.9 KiB
C
136 lines
3.9 KiB
C
#include"lcd.h"
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/*******************************************************************************
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* �� �� �� : Lcd1602_Delay1ms
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* �������� : ��ʱ��������ʱ1ms
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* �� �� : c
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* �� �� : ��
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* ˵ �� : �ú�������12MHZ�����£�12��Ƶ��Ƭ������ʱ��
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*******************************************************************************/
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void Lcd1602_Delay1ms(uint c) //��� 0us
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{
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uchar a,b;
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for (; c>0; c--)
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{
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for (b=199;b>0;b--)
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{
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for(a=1;a>0;a--);
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}
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}
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}
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/*******************************************************************************
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* �� �� �� : LcdWriteCom
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* �������� : ��LCDд��һ���ֽڵ�����
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* �� �� : com
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* �� �� : ��
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*******************************************************************************/
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#ifndef LCD1602_4PINS //��û�ж������LCD1602_4PINSʱ
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void LcdWriteCom(uchar com) //�����
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{
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LCD1602_E = 0; //ʹ��
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LCD1602_RS = 0; //ѡ��������
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LCD1602_RW = 0; //ѡ��д��
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LCD1602_DATAPINS = com; //��������
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Lcd1602_Delay1ms(1); //�ȴ������ȶ�
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LCD1602_E = 1; //д��ʱ��
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Lcd1602_Delay1ms(5); //����ʱ��
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LCD1602_E = 0;
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}
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#else
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void LcdWriteCom(uchar com)
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{
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LCD1602_E = 0;
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LCD1602_RS = 0;
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LCD1602_RW = 0;
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LCD1602_DATAPINS = com;
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Lcd1602_Delay1ms(1);
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LCD1602_E = 1;
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Lcd1602_Delay1ms(1);
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LCD1602_E = 0;
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Lcd1602_Delay1ms(1);
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LCD1602_DATAPINS = com << 4;
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Lcd1602_Delay1ms(1);
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LCD1602_E = 1;
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Lcd1602_Delay1ms(1);
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LCD1602_E = 0;
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}
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#endif
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/*******************************************************************************
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* �� �� �� : LcdWriteData
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* �������� : ��LCDд��һ���ֽڵ�����
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* �� �� : dat
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* �� �� : ��
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*******************************************************************************/
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#ifndef LCD1602_4PINS
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void LcdWriteData(uchar dat) //�����
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{
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LCD1602_E = 0; //ʹ������
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LCD1602_RS = 1; //ѡ����������
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LCD1602_RW = 0; //ѡ��д��
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LCD1602_DATAPINS = dat; //�����
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Lcd1602_Delay1ms(1);
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LCD1602_E = 1; //д��ʱ��
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Lcd1602_Delay1ms(5); //����ʱ��
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LCD1602_E = 0;
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}
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#else
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void LcdWriteData(uchar dat)
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{
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LCD1602_E = 0;
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LCD1602_RS = 1;
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LCD1602_RW = 0;
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LCD1602_DATAPINS = dat;
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Lcd1602_Delay1ms(1);
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LCD1602_E = 1;
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Lcd1602_Delay1ms(1);
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LCD1602_E = 0;
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Lcd1602_Delay1ms(1);
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LCD1602_DATAPINS = dat << 4;
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Lcd1602_Delay1ms(1);
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LCD1602_E = 1;
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Lcd1602_Delay1ms(1);
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LCD1602_E = 0;
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}
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#endif
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/*******************************************************************************
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* �� �� �� : LcdInit()
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* �������� : ��ʼ��LCD��
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* �� �� : ��
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* �� �� : ��
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*******************************************************************************/
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#ifndef LCD1602_4PINS
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void LcdInit() //LCD��ʼ���ӳ���
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{
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LcdWriteCom(0x38); //����ʾ
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LcdWriteCom(0x0c); //����ʾ����ʾ���
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LcdWriteCom(0x06); //дһ��ָ���1
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LcdWriteCom(0x01); //����
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LcdWriteCom(0x80); //��������ָ�����
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}
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#else
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void LcdInit() //LCD��ʼ���ӳ���
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{
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LcdWriteCom(0x32); //��8λ����תΪ4λ����
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LcdWriteCom(0x28); //����λ���µij�ʼ��
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LcdWriteCom(0x0c); //����ʾ����ʾ���
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LcdWriteCom(0x06); //дһ��ָ���1
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LcdWriteCom(0x01); //����
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LcdWriteCom(0x80); //��������ָ�����
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}
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#endif
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