zlg7289 c程序
#include"msp430x14x.h"
#include"IO.h"

#define DELAY_1US???? _NOP();_NOP();_NOP();_NOP();_NOP();_NOP();_NOP();_NOP()

void Delay(unsigned int t)????????????????? //延時 t us
{
?unsigned int? i;
?for (i=0;i??DELAY_1US;
}
/*
函數：ZLG7289_SPI_Write()
功能：向SPI 總線寫入1 個字節的數據
參數：
dat：要寫入的數據
*/
void ZLG7289_SPI_Write(char dat)?????????? //5
{
?unsigned char t = 8;
?ZLG7289_OperateIO &=~ZLG7289_CLK;?? //clk=0
?do
?{
??if(dat&0x80)
???ZLG7289_OperateIO? |=ZLG7289_DAT;
??else
???ZLG7289_OperateIO? &=~ZLG7289_DAT;
??ZLG7289_OperateIO |=ZLG7289_CLK;??? //clk=1
??dat <<= 1;
??Delay(4);
??ZLG7289_OperateIO &=~ZLG7289_CLK;?? //clk=0
??Delay(4);
?? }while ( --t != 0 );
}
/*
函數：ZLG7289_SPI_Read()
功能：從SPI 總線讀取1 個字節的數據
返回：
讀取到的數據
*/
unsigned char ZLG7289_SPI_Read()
{
?unsigned char dat=0x00;
?unsigned char t = 8;
?ZLG7289_OperateIO &=~ZLG7289_CLK;? //clk=0
?//ZLG7289_DAT = 1; //讀取數據之前DIO 引腳要置1 以切換到輸入狀態
?do
?{
??ZLG7289_OperateIO? |=ZLG7289_CLK;??? //clk=1
??Delay(4);?
??dat <<= 1;
??if ((ZLG7289_OperateIO_IN&ZLG7289_DAT))
???dat++;
??ZLG7289_OperateIO? &=~ZLG7289_CLK;? //clk=0
??Delay(4);
?}while ( --t != 0 );
?return dat;
}

/*
函數：ZLG7289_cmd()
功能：執行ZLG7289 純指令
參數：
cmd：命令字
*/??????????????????????????????????????????????? //6
void ZLG7289_cmd(char cmd)
{
?ZLG7289_OperateIO_DIR |=ZLG7289_DAT;???? //output
?ZLG7289_OperateIO &=~ZLG7289_CS;???? //CS=0
?Delay(24);
?ZLG7289_SPI_Write(cmd);
?ZLG7289_OperateIO |=ZLG7289_CS;???? //CS=1
?ZLG7289_OperateIO_DIR &=~ZLG7289_DAT;???? //input
}
/*
函數：ZLG7289_cmd_dat()
功能：執行ZLG7289 帶數據指令
參數：
cmd：命令字
dat：數據
*/
void ZLG7289_cmd_dat(char cmd, char dat)
{
?ZLG7289_OperateIO_DIR |=ZLG7289_DAT;???? //output
?ZLG7289_OperateIO &=~ZLG7289_CS;???? //CS=0
?Delay(24);
?ZLG7289_SPI_Write(cmd);
?Delay(14);
?ZLG7289_SPI_Write(dat);
?ZLG7289_OperateIO |=ZLG7289_CS;???? //CS=1
?ZLG7289_OperateIO_DIR &=~ZLG7289_DAT;?? //input
}
/*
函數：ZLG7289_Download()
功能：下載數據
參數：
mod=0：下載數據且按方式0 譯碼
mod=1：下載數據且按方式1 譯碼
mod=2：下載數據但不譯碼
x：數碼管編號（橫坐標），取值0～7
dp=0：小數點不亮????????????????????????????????? //7
dp=1：小數點亮
dat：要顯示的數據
說明：
譯碼方式的具體含義請參考數據手冊
*/
void ZLG7289_Download(unsigned char mod, char x,char dp, char dat)
{
?char ModDat[3] = {0x80,0xC8,0x90};
?char d1;
?char d2;
?if ( mod > 2 )
??mod = 2;
?d1? = ModDat[mod];
?x?? = x? & 0x07;
?d1? = d1 | x;
?d2? = dat & 0x7F;
?if ( dp )
??d2 =d2 | 0x80;
?ZLG7289_cmd_dat(d1,d2);
}

/*
功能：執行ZLG7289 鍵盤命令
返回：
返回讀到的按鍵值：0～63
如果返回0xFF 則表示沒有鍵按下
*/

unsigned char ZLG7289_Key()
{
?unsigned char key;
?ZLG7289_OperateIO_DIR |=ZLG7289_DAT;???? //output
?ZLG7289_OperateIO &=~ZLG7289_CS;???? //CS=0
?Delay(24);
?ZLG7289_SPI_Write(0x15);
?ZLG7289_OperateIO_DIR &=~ZLG7289_DAT;???? //input
?Delay(14);
?key = ZLG7289_SPI_Read();
?ZLG7289_OperateIO |=ZLG7289_CS;???? //CS=0
?return key;
}

void ZLG7289_initial(void)
{
?ZLG7289_OperateIO_DIR? |=? ZLG7289_CS+ZLG7289_CLK+ZLG7289_KEY;
?ZLG7289_OperateIO????? |=? ZLG7289_CS+ZLG7289_KEY;
?ZLG7289_OperateIO????? &=~ ZLG7289_CLK;
?ZLG7289_OperateIO_DIR? &=~ ZLG7289_KEY;?? //INPUT
???????
?ZLG7289_OperateIE????? |=? ZLG7289_KEY;?? //enable interrupt
?ZLG7289_OperateIES???? |=? ZLG7289_KEY;?? //failing
}