msp430_7219.h

本程序运用MSP430单片机实现了代功耗模式下数字时钟,用MAX7219驱动8位7段LED显示,能精确显示"时","分","钞".

#ifndef __MSP430_7219
#define __MSP430_7219




#define  MAX7221DIR P5DIR
#define  MAX7221OUT P5OUT

#define  DIN  BIT5
#define  CS   BIT6
#define  CLK  BIT7

#define  CS_L  MAX7221OUT  &=~ CS   //硬件中CS=1
#define  CS_H  MAX7221OUT  |= CS    //硬件中CS=0
#define  CLK_L MAX7221OUT  &=~CLK   //硬件中CLK=1
#define  CLK_H MAX7221OUT  |=CLK    //硬件中CLK=0
#define  DIN_L MAX7221OUT  &=~DIN   //硬件中DIN=1
#define  DIN_H MAX7221OUT  |=DIN    //硬件中DIN=0

void WriteMax7221(unsigned char add,unsigned char dat);
void InitialMax7221(void);
void Max7219_Write_Led(unsigned char *p);

#endif