S3C2440的UART程序设计

//************UART查询**************

extern void Init_check_uart()

{

rGPHCON |= 0xa0;

rGPHUP = 0x0;

rULCON0 = 0x03;

rUCON0 = 0x05;

rUFCON0 = 0x00;

rUMCON0 = 0x00;

rUBRDIV0 = 53;//PCLK=50MHz,波特率57600

dely(10);

}

extern void send_char(unsigned char c)

{

while(!(rUTRSTAT0 &0x04));

rUTXH0 = c;

}

extern void send_str(unsigned char *str)

{

int i=0;

while(str[i])

{

send_char((unsigned char) str[i++]);

}

}

//************UART中断**************

void __irq uart0_irq(void)

{

unsigned long irqOffSet;

Led_all_on();

dely(350);

Led_all_off();

dely(350);

irqOffSet = rINTOFFSET;// 取得中断号

rSUBSRCPND |= 1<<1;

rSRCPND |= 1<

rINTPND |= 1<<28;// 清除中断结果

rUTXH0 = '1';

}

extern void Init_Interrupt_uart()

{

rGPHCON |= 0xa0;

rGPHUP = 0x0;

rULCON0 = 0x03;

rUCON0 = 0x05;

rUFCON0 = 0x00;

rUMCON0 = 0x00;

rUBRDIV0 = 53;//PCLK=50MHz,波特率57600

dely(100);

pISR_UART0 = (unsigned int)uart0_irq;

rINTSUBMSK &= ~(1<<1);

rINTMSK &= ~(1<<28);

rUTXH0 = '1';

dely(10);

}