鼠标c语言格式例程(平台:arm lpc2132)
例程如下为准确期间 未使用 循环
可以改进
void SEND_BYTE(uint8 word)
{
int i,j;
uint32 parity=0;
for (j=0;j<8;j )
{
if ((word>>j)&0x1 == 1)
parity="(parity);
}
parity="parity;
IO0DIR = CLK|DATA;
IO0SET = CLK|DATA;
IO0CLR = CLK;
for(i=0;i<1500;i )
;
//IO0DIR=CLK|DATA;
for(i=0;i<300;i );
IO0CLR=DATA;
for(i=0;i<75;i );
IO0DIR=DATA;
//for(i=0;i<500;i );
//while (( IO0PIN & CLK )!=0);
//while( ( IO0PIN & CLK )==0);
while (( IO0PIN & CLK )!=0);
for(i=0;i<200;i );
if ( (word>>0)&0x1 )
IO0SET=0x1;
else
IO0CLR=0x1;
while( ( IO0PIN & CLK )==0);
while (( IO0PIN & CLK )!=0);
for(i=0;i<200;i );
if ( (word>>1)&0x1 )
IO0SET=0x1;
else
IO0CLR=0x1;
while( ( IO0PIN & CLK )==0);
while (( IO0PIN & CLK )!=0);
for(i=0;i<200;i );
if ( (word>>2)&0x1 )
IO0SET=0x1;
else
IO0CLR=0x1;
while( ( IO0PIN & CLK )==0);
while (( IO0PIN & CLK )!=0);
for(i=0;i<200;i );
if ( (word>>3)&0x1 )
IO0SET=0x1;
else
IO0CLR=0x1;
while( ( IO0PIN & CLK )==0);
while (( IO0PIN & CLK )!=0);
for(i=0;i<200;i );
if ( (word>>4)&0x1 )
IO0SET=0x1;
else
IO0CLR=0x1;
while( ( IO0PIN & CLK )==0);
while (( IO0PIN & CLK )!=0);
for(i=0;i<200;i );
if ( (word>>5)&0x1 )
IO0SET=0x1;
else
IO0CLR=0x1;
while( ( IO0PIN & CLK )==0);
while (( IO0PIN & CLK )!=0);
for(i=0;i<200;i );
if ( (word>>6)&0x1 )
IO0SET=0x1;
else
IO0CLR=0x1;
while( ( IO0PIN & CLK )==0);
while (( IO0PIN & CLK )!=0);
for(i=0;i<200;i );
if ( (word>>7)&0x1 )
IO0SET=0x1;
else
IO0CLR=0x1;
while( ( IO0PIN & CLK )==0);
while (( IO0PIN & CLK )!=0);
for(i=0;i<200;i );
if ( parity &0x1 )
IO0SET=0x1;
else
IO0CLR=0x1;
while( ( IO0PIN & CLK )==0);
while (( IO0PIN & CLK )!=0);
for(i=0;i<200;i );
IO0SET=0x1;
while( ( IO0PIN & CLK )==0);
for(i=0;i<200;i );
IO0DIR=0;
for(j=0;j<1500;j );
}
接受数据
void RECEIVE_BYTE(void)
{
int i,j;
uint32 parity=0;
at=0;
/*for (j=0;j<8;j )
{
if ((word>>j)&0x1 == 1)
parity="(parity);
}
parity="parity;*/
while (( IO0PIN & CLK )!=0);
for(i=0;i<500;i );
while( ( IO0PIN & CLK )==0);
while (( IO0PIN & CLK )!=0);
for(i=0;i<200;i );
at|=(IO0PIN&0x1)<<0;
while( ( IO0PIN & CLK )==0);
while (( IO0PIN & CLK )!=0);
for(i=0;i<200;i );
at|=(IO0PIN&0x1)<<1;
while( ( IO0PIN & CLK )==0);
while (( IO0PIN & CLK )!=0);
for(i=0;i<200;i );
at|=(IO0PIN&0x1)<<2;
while( ( IO0PIN & CLK )==0);
while (( IO0PIN & CLK )!=0);
for(i=0;i<200;i );
at|=(IO0PIN&0x1)<<3;
while( ( IO0PIN & CLK )==0);
while (( IO0PIN & CLK )!=0);
for(i=0;i<200;i );
at|=(IO0PIN&0x1)<<4;
while( ( IO0PIN & CLK )==0);
while (( IO0PIN & CLK )!=0);
for(i=0;i<200;i );
at|=(IO0PIN&0x1)<<5;
while( ( IO0PIN & CLK )==0);
while (( IO0PIN & CLK )!=0);
for(i=0;i<200;i );
at|=(IO0PIN&0x1)<<6;
while( ( IO0PIN & CLK )==0);
while (( IO0PIN & CLK )!=0);
for(i=0;i<200;i );
at|=(IO0PIN&0x1)<<7;
while( ( IO0PIN & CLK )==0);
while (( IO0PIN & CLK )!=0);
for(i=0;i<200;i );
at|=(IO0PIN&0x1)<<8;
while( ( IO0PIN & CLK )==0);
while (( IO0PIN & CLK )!=0);
for(i=0;i<200;i );
at|=(IO0PIN&0x1)<<9;
while( ( IO0PIN & CLK )==0);
for(i=0;i<1000;i );
}
平台 arm lpc2132