ht1621.h

基于MSP430F20XX系列控制LCD控制器HT1621的代码,带硬件原理图,液晶屏使用周立功的ZY886B IC卡水表LCD液晶显示模块,该程序控制7位数字显示

#define BIAS    0x29
#define SYSDIS  0x00
#define SYSEN   0x01
#define LCDON   0x03
#define LCDOFF  0x02

//IO口定义，用户根据实际电路修改
#define CS  BIT1
#define RD  BIT2
#define WR  BIT3
#define DAT BIT4
#define IRQ BIT5

//MSP430 IO口操作
#define SET_CS  P1OUT |= CS
#define SET_WR  P1OUT |= WR
#define SET_RD  P1OUT |= RD
#define SET_DAT P1OUT |= DAT

#define CLR_CS  P1OUT &=~CS
#define CLR_WR  P1OUT &=~WR
#define CLR_RD  P1OUT &=~RD
#define CLR_DAT P1OUT &=~DAT

//常量定义
#define HIGH  0
#define LOW   1

void Send_Bit_1621(unsigned char data, unsigned char dir, char count);
void Write_1621_RAM(unsigned char adr, unsigned char data);
void Update_LCD_Num();
void Send_1621_Cmd(unsigned char cmd);