专家给讲将UART的读操作怎么进行的啊?弄不懂

void delay(int t)
{
while(t--);
}
void main( void )
{
unsigned char ch1mode[]={0x50};
unsigned char ch2mode[]={0x54};
unsigned char ch3mode[]={0x58};
unsigned char ch1duty[]={0x53};
unsigned char ch2duty[]={0x57};
unsigned char ch3duty[]={0x5B};
unsigned char ch1modevalue[]={0xC0};
unsigned char ch2modevalue[]={0xC0};
unsigned char ch3modevalue[]={0xC0};
unsigned char ch1dutyvalue[]={0x55};
unsigned char ch2dutyvalue[]={0x45};
unsigned char ch3dutyvalue[]={0x45};
unsigned char read[]={0xA7};
UART0_Start();
delay(2000);//2ms
UART0_SendData(ch1duty,1) ;
delay(2000);
UART0_SendData(ch1dutyvalue,1) ;
delay(2000);
UART0_SendData(ch1mode,1) ;
delay(2000);
UART0_SendData(ch1modevalue,1) ;
delay(2000);
UART0_SendData(ch2duty,1) ;
delay(2000);
UART0_SendData(ch2dutyvalue,1) ;
delay(6000);
UART0_SendData(ch2mode,1) ;
delay(2000);
UART0_SendData(ch2modevalue,1) ;
delay(2000);
UART0_SendData(ch3duty,1) ;
delay(2000);
UART0_SendData(ch3dutyvalue,1) ;
delay(2000);
UART0_SendData(ch3mode,1) ;
delay(2000);
UART0_SendData(ch3modevalue,1) ;
delay(2000);
while (1) {
UART0_SendData(read,1) ;
delay(2000);
}
}
