s3c6410 串口初始化

来源：互联网发布：sql server 2016 win7 编辑：程序博客网时间：2024/05/20 19:18

ok6410 UART（非中断）

#define GPMCON(*((volatile unsigned long *)0x7f008820))#define GPMDAT(*((volatile unsigned long *)0x7f008824))#define GPACON(*((volatile unsigned long *)0x7f008000))#define GPADAT(*((volatile unsigned long *)0x7f008004))#define ULCON0(*((volatile unsigned long *)0x7f005000))#define UCON0(*((volatile unsigned long *)0x7f005004))#define UFCON0(*((volatile unsigned long *)0x7f005008))#define UMCON0(*((volatile unsigned long *)0x7f00500c))#define UBRDIV0(*((volatile unsigned short *)0x7f005028))#define UDIVSLOT0 (*((volatile unsigned short *)0x7f00502C))#define UFSTAT0(*((volatile unsigned long *)0x7f005018))#define URXH0(*((volatile unsigned char *)0x7f005024))#define UTXH0(*((volatile unsigned char *)0x7f005020))int uart_init(void){/*set to uart mode*/GPACON &= ~0xff;GPACON |= 0x22;/*set the frame*/ULCON0 = 0x03;/*set to interrupt mode and PCLK*/UCON0 = 0x805;/*enable FIFO*/UFCON0 = 0x01;/*don't use ACF*/UMCON0 = 0x01;/*boaud rateDIV_VAL = (PCLK / (bps * 16)) -1= (66500000 / (115200 * 16)) - 1= 35.08*/UBRDIV0 = 35;UDIVSLOT0 = 0X1;}char getchar(void){while ((UFSTAT0 & 0x7f) == 0);return URXH0;}void put_char(char c){while (UFSTAT0 & (1 << 14));UTXH0 = c;}