ht1621.c

HT1621的驱动源程序。HT1621是小LCD的驱动芯片。在实际车载LCD TV系统中使用

/*******************************************************************************
**                            (c) Copyright 2004-2005, xujiajun
**                                    All Rights Reserved
**                                        V040723
**--------------文件信息--------------------------------------------------------
**创   建   人: 徐家俊
**创建日期: 2006年1月20日
**描        述:HT1621驱动
**--------------版本修订历史----------------------------------------------------
** 修改人:徐家俊
** 版  本: V
** 日　期: 年月日
** 描　述:
**--------------当前版本修订----------------------------------------------------
** 修改人:徐家俊
** 版  本: 
** 日　期:年月日
** 描　述:
**------------------------------------------------------------------------------
*******************************************************************************/
//#define IN_1621

#include"main.h"

/*----------------------------------------------------------------------------*/
//const define
#define BIAS     0X52 /*定义1 3 偏压4 背极*/
#define XTAL32   0X28 /*使用外部晶振*/
#define RC256    0X30 /*使用内部256KRC 振荡器*/
#define SYSEN    0X02 /*打开振荡发生器*/
#define LCDON    0X06 /*打开LCD*/
#define SYSDIS   0X00 /*关闭振荡发生器*/
#define LCDOFF   0X04 /*显示关闭*/
#define TONE4    0X80 /*设置BZ 输出频率为4K*/
#define TONEON   0X12 /*打开BZ 音频输出*/
#define TONEOFF  0X10 /*关闭BZ 音频输出*/
#define CLRWDT   0X1c /*清零WDT*/
#define F1       0X40 /*WDT设置为4 秒溢出*/
#define IRQEN    0X10 /*IRQ 输出禁止*/
#define IRQDIS   0X00 /*IRQ 输出允许*/
#define WDTEN    0X0e /*打开WDT*/
#define WDTDIS   0X0a /*关闭WDT*/
#define TIMERDIS 0X08 /*关闭时基输出*/
/*----------------------------------------------------------------------------*/
//Globe variable define
/*----------------------------------------------------------------------------*/
//function define
void FillSameDataTo1621(uchar Data);
/********************************************************************************************************
 Descriptions:          发送数据位
 input parameters:      bitcnt : the bits of being sent
 Returned value:        None
 Used global variables: None
 Calling modules:       None
 Created by:            xjj 2006/01/20
-------------------------------------------------------------------------------------------------------
 Modified by:
********************************************************************************************************/
void SendBit(uchar dat,uchar bitcnt)
{
        uchar i;
        
        for(i=0;i<bitcnt;i++)
        {
                if(( dat & 0x80 ) == 0)
                        HT1621Data_Port = 0;
                else
                        HT1621Data_Port = 1; /*发送数据由高位到低位传送*/
                _nop_();
                _nop_();
                HT1621Wr_Port = 1;      /*置写时钟线为高通知被控器开始接收数位*/
                _nop_();
                _nop_();
                HT1621Wr_Port = 0;      /*钳住总线准备下一个数据位*/
                dat=dat<<1;       /*发送数据左移一位*/
        }
}
/********************************************************************************************************
 Descriptions:          发送A命令函数 发送HT1621 命令时要先发送ID 值
 input parameters:      command
 Returned value:        None
 Used global variables: None
 Calling modules:       None
 Created by:            xjj 2006/01/20
-------------------------------------------------------------------------------------------------------
 Modified by:
********************************************************************************************************/
void SendComA(uchar command)
{
        HT1621Wr_Port = 1;
        HT1621Cs_Port = 0;
        _nop_();
        HT1621Wr_Port = 0;

        SendBit(0x80,4);/*发送设置命令ID=100 0*/
        SendBit(command, 8);/*发送命令字*/
  
        HT1621Cs_Port = 1;
        HT1621Wr_Port = 1;
}
/********************************************************************************************************
 Descriptions:          发送B命令函数 发送HT1621 命令时要先发送ID 值
 input parameters:      command
 Returned value:        None
 Used global variables: None
 Calling modules:       None
 Created by:            xjj 2006/01/20
-------------------------------------------------------------------------------------------------------
 Modified by:
********************************************************************************************************/
/*
void SendComB(uchar command)
{
        HT1621Wr_Port = 1;
        HT1621Cs_Port = 0;
        _nop_();
        HT1621Wr_Port = 0;

        SendBit(0x90,4);//发送设置命令ID=100 1
        SendBit(command, 8);//发送命令字
  
        HT1621Cs_Port = 1;
        HT1621Wr_Port = 1;
}
*/
/********************************************************************************************************
 Descriptions:          initial HT1621
 input parameters:      None
 Returned value:        None
 Used global variables: None
 Calling modules:       None
 Created by:            xjj 2006/01/20
-------------------------------------------------------------------------------------------------------
 Modified by:
********************************************************************************************************/
void HT1621Init(void)
{
        HT1621Data_Port = 1;
        HT1621Cs_Port = 1;
        HT1621Wr_Port = 1;

        SendComA(b00000010B);//开系统振荡器         
        SendComA(b00000110B);//打开LCD偏压发生器    
        SendComA(b00110000B);//系统时钟片内振荡器   
        SendComA(b01010010B);//最后一位1/2或1/3偏压 
        SendComA(b00010000B);//关闭声音输出         
        SendComA(b10000000B);//声音4Kkz             
        FillSameDataTo1621(0); /*输出全显数据*/
        //清HT1621显示数据
        ucLCDData1 = LCD_DB_NC;
        ucLCDData2 = LCD_NC;
        ucLCDData3 = LCD_NC;
        ucLCDData4 = LCD_NC;
        ucLCDData5 = LCD_NC;
        ucLCDData6 = LCD_NC;
        ucLCDSegment1 = 0;
        ucLCDSegment2 = 0;
}
/********************************************************************************************************
 Descriptions:          send data to HT1621 
 input parameters:      pBuf:the data buf point; Addr:the address of the data; DataCnt:the number of data  
 Returned value:        None
 Used global variables: None
 Calling modules:       None
 Created by:            xjj 2006/01/20
-------------------------------------------------------------------------------------------------------
 Modified by:
********************************************************************************************************/
/*
void Send1621Data(uchar* pBuf, uchar Addr, uchar DataCnt)
{
        uchar i;

        HT1621Wr_Port = 1;
        HT1621Cs_Port = 0;
        _nop_();
        HT1621Wr_Port = 0;

        SendBit(0xA0, 3);//send the prefix 101 
        Addr <<= 2;
        SendBit(Addr, 6);//send the addr
        for(i=0;i<DataCnt;i++)
        {
                SendBit(*pBuf, 8);//send the data
                pBuf++;
        }

        HT1621Cs_Port = 1;
        HT1621Wr_Port = 1;
} 
*/
/********************************************************************************************************
 Descriptions:          fill the same data to HT1621 
 input parameters:      data  
 Returned value:        None
 Used global variables: None
 Calling modules:       None
 Created by:            xjj 2006/01/20
-------------------------------------------------------------------------------------------------------
 Modified by:
********************************************************************************************************/
void FillSameDataTo1621(uchar Data)
{
        uchar i;

        HT1621Wr_Port = 1;
        HT1621Cs_Port = 0;
        _nop_();
        HT1621Wr_Port = 0;

        SendBit(0xA0, 3);//send the prefix 101 
        SendBit(0x00, 6);//send the addr
        for(i=0;i<16;i++)
        {
            SendBit(Data, 8);//send the data
        }

        HT1621Cs_Port = 1;
        HT1621Wr_Port = 1;
}
/********************************************************************************************************
 Descriptions:          Get the time in PCF8563 and show on LCD controled by HT1621 
                        ;接收并在LCD上显示时间  DISP_TIME_ON_LCD
 input parameters:      data  
 Returned value:        None
 Used global variables: None
 Calling modules:       None
 Created by:            xjj 2006/01/20
-------------------------------------------------------------------------------------------------------
 Modified by:
********************************************************************************************************/