typedef bit Bit;
typedef bit Bool;
typedef unsigned char Byte;
typedef unsigned int Word;
typedef unsigned long Dword;
#define LCDSDA_PIN P1_1
#define LCDSCK_PIN P1_6
#define LCDCS_PIN P3_2
//初始化IO
3根線全部輸出高電平
程序略
下面是4COM 12SEG驅動程序,刷數據前對SEG[0~5]賦值，然后調用Driver_RefreshHT1621函數即可
/*-----------------------------------------------------------------------------------------
*
* LCD driver HT1621
* ----------------------------
*
*----------------------------------------------------------------------------------------*/
#define ID 3
#define COMMAND 9
#define ADDR 6
#define DATA 4
void WriteHT1621(Byte bitLen,Byte value)
{
Byte i;
for(i=bitLen;i>0;i--)
{
LCDSCK_PIN = 0;
value = value<<1;
LCDSDA_PIN = CY;
_nop_();
_nop_();
LCDSCK_PIN = 1;
}
}
void Driver_RefreshHT1621(void)
{
Byte i;
LCDCS_PIN = 0;
WriteHT1621(ID,Bin(10000000)); //command operation
WriteHT1621(COMMAND,Bin(00011000)); // -- RC256K
WriteHT1621(COMMAND,Bin(00000001)); // -- Turn on OSC
WriteHT1621(COMMAND,Bin(00101001)); // -- 1/3Bias 1/4Duty
WriteHT1621(COMMAND,Bin(00000011)); // -- Turn On LCD
LCDCS_PIN = 1;
_nop_();
_nop_();
_nop_();
_nop_();
LCDCS_PIN = 0;
WriteHT1621(ID,Bin(10100000)); //data operation
WriteHT1621(ADDR,Bin(00000000)); // -- Address
for(i=0;i<6;i++)
{
WriteHT1621(DATA,SEG); // -- SEG00 ~11
WriteHT1621(DATA,(SEG<<4));
}
LCDCS_PIN = 1;
}
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