程序如下，如果加了ucha FP_Save_Finger[9]這個數組會出問題，但我根本沒有調用過那個數組，沒加這個數組時串口通信正常
#include <reg52.h>
#define uchar unsigned char
#define uint unsigned int
sbit CS=P0^7; //串行寫入，液晶借接口
sbit SID=P0^6;
sbit SCLK=P0^5;
sbit RST=P0^3;
sbit PSB=P0^4;
uchar buffer[18];
//指紋識別通信協議
uchar code FP_pack_head[6]={0xef,0x01,0xff,0xff,0xff,0xff};//協議包頭
unsigned char code FP_Get_Img[6] = {0x01,0x00,0x03,0x01,0x0,0x05}; //獲取指紋圖像
code unsigned char FPMXX_Get_Templete_Count[6] ={0x01,0x00,0x03,0x1D,0x00,0x21 }; //獲取模板總數
code unsigned char FP_Search[11]={0x01,0x0,0x08,0x04,0x01,0x0,0x0,0x03,0xA1,0x0,0xB2}; //搜索指紋范圍0-929
code unsigned char FP_Search_0_9[11]={0x01,0x0,0x08,0x04,0x01,0x0,0x0,0x0,0x13,0x0,0x21}; //搜索0-9號指紋
code unsigned char FP_Img_To_Buffer1[7]={0x01,0x0,0x04,0x02,0x01,0x0,0x08}; //將圖像放進buffer1
code unsigned char FP_Img_To_Buffer2[7]={0x01,0x0,0x04,0x02,0x02,0x0,0x09}; //將圖像放進buffer2
code unsigned char FP_Reg_Model[6]={0x01,0x0,0x03,0x05,0x0,0x09}; //將buffer1和buffer2合成特征模板
code unsigned char FP_Delet_All_Model[6]={0x01,0x0,0x03,0x0d,0x00,0x11};//刪除指紋模塊里的所有模板
/*
uchar FP_Save_Finger[9]={0x01,0x00,0x06,0x06,0x01,0x00,0x0b,0x00,0x19};
*/
//延時程序
void delay_1ms(uint m)
{
uchar t,j;
for(t=0;t<m;t++)
{
for(j=0;j<110;j++);
}
}
//////////////串口發送，接收
void UART_init_57600()
{
SCON = 0x50; // 1010000 工作方式一，允許接收
TMOD = 0x20; //8位自動重裝 ，T1工作方式2，
TH1 = 250; //自動重裝，波特率為57600
TL1 = 250;
PCON = 0x80; //波特率加倍
RI = 0; //中斷標志位
TI = 0;
TR1 = 1; //啟動定時器1
EA = 1; //全局中斷允許位
ES = 1; //打開串口中斷
//T1定時器為串口通信的波特率設置位
}
void UART_Send_Byte(uchar d)//串口發送
{
SBUF = d;
while(!TI);
TI = 0;
}
unsigned char UART_Receive_Byte()//串口接收
{
uchar dat;
while(!RI);
RI = 0;
dat = SBUF;
return (dat);
}
//////////////////
void FP_cmd_head()//協議包頭
{
uchar i;
for(i=0;i<6;i++)
{
UART_Send_Byte(FP_pack_head[i]);
}
}
void FPMXX_Cmd_Get_Img(void)//獲取指紋圖像
{
uchar i;
FP_cmd_head();
for(i=0;i<6;i++)
{
UART_Send_Byte(FP_Get_Img[i]);
}
for(i=0;i<12;i++)
buffer[i]=UART_Receive_Byte();
}
//將圖像轉換為特征碼存儲在特征文件緩沖區1
void FINGERPRINT_Cmd_Img_To_Buffer1(void)
{
unsigned char i;
FP_cmd_head();
for(i=0;i<7;i++)
{
UART_Send_Byte(FP_Img_To_Buffer1[i]);
}
for(i=0;i<12;i++)
buffer[i]=UART_Receive_Byte();
}
//將圖像轉換為特征碼存儲在特征文件緩沖區2
void FINGERPRINT_Cmd_Img_To_Buffer2(void)
{
unsigned char i;
for(i=0;i<6;i++)
{
UART_Send_Byte(FP_pack_head[i]);
}
for(i=0;i<7;i++)
{
UART_Send_Byte(FP_Img_To_Buffer2[i]);
}
for(i=0;i<12;i++)
buffer[i]=UART_Receive_Byte();
}
//將Buffer1和buffer2合并成指紋模板
void FINGERPRINT_Cmd_Reg_Model(void)
{
unsigned char i;
for(i=0;i<6;i++)
{
UART_Send_Byte(FP_pack_head[i]);
}
for(i=0;i<6;i++)
{
UART_Send_Byte(FP_Reg_Model[i]);
}
for(i=0;i<12;i++)
buffer[i]=UART_Receive_Byte();
}
/////液晶函數
void send_command(uchar command_data) //把命令寫進去函數 液晶
{
uchar i;
uchar i_data;
i_data=0xf8;
CS=1;
SCLK=0;
for(i=0;i<8;i++)
{
SID=(bit)(i_data&0x80);
SCLK=0;
SCLK=1;
i_data=i_data<<1;
}
i_data=command_data;
i_data&=0xf0;
for(i=0;i<8;i++)
{
SID=(bit)(i_data&0x80);
SCLK=0;
SCLK=1;
i_data=i_data<<1;
}
i_data=command_data;
i_data<<=4;
for(i=0;i<8;i++)
{
SID=(bit)(i_data&0x80);
SCLK=0;
SCLK=1;
i_data=i_data<<1;
}
CS=0;
delay_1ms(10);
}
void send_data(uchar command_data) //把數據寫進去函數 液晶
{
uchar i;
uchar i_data;
i_data=0xfa;
CS=1;
for(i=0;i<8;i++)
{
SID=(bit)(i_data&0x80);
SCLK=0;
SCLK=1;
i_data=i_data<<1;
}
i_data=command_data;
i_data&=0xf0;
for(i=0;i<8;i++)
{
SID=(bit)(i_data&0x80);
SCLK=0;
SCLK=1;
i_data=i_data<<1;
}
i_data=command_data;
i_data<<=4;
for(i=0;i<8;i++)
{
SID=(bit)(i_data&0x80);
SCLK=0;
SCLK=1;
i_data=i_data<<1;
}
CS=0;
delay_1ms(10);
}
void lcd_init()
{
RST=1; //不復位，串行方式
PSB=0;
delay_1ms(100);
send_command(0x30); /*設置8位數據接口，基本指令模式。*/
send_command(0x02); /*清DDRAM*/
send_command(0x06); /*游標及顯示右移一位*/
send_command(0x0c); /*整體顯示開，游標關，反白關*/
send_command(0x01); /*寫入空格清屏幕*/
send_command(0x80); /*設定首次顯示位置*/
}
//////////////////////////////////////
void main()
{
uchar i,shi,ge;
delay_1ms(200);
UART_init_57600();//波特率初始化
lcd_init();//液晶顯示初始化
do
{
FPMXX_Cmd_Get_Img();
}while(buffer[9]!=0x0);//等待接收指紋模塊反饋的數據是否正確
send_command(0x80);//把接收到的數據顯示在液晶上
for(i=0;i<12;i++)
{
shi=buffer[i]/0x10;
ge=buffer[i]%0x10;
if(shi>9)
{
send_data(shi+0x37);
}
else
send_data(shi+0x30);
if(ge>9)
{
send_data(ge+0x37);
}
else
send_data(ge+0x30);
}
while(1);
}
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