2. #include "exynos_4412.h"
    4. void Delay(unsigned int Time)
    5. {
    6.     while(Time --);
    7. }
    9. void UART_Init(void)
    10. {
    11.     GPA1.CON = GPA1.CON & (~(0xFF << 0)) | (0x22 << 0);
    12.     UART2.ULCON2 = UART2.ULCON2 & (~(0x7F << 0)) | (0x3 << 0);
    13.     UART2.UCON2 = UART2.UCON2 & (~(0xF << 0)) | (0x5 << 0);
    14.     UART2.UBRDIV2 = 53;
    15.     UART2.UFRACVAL2 = 4;
    16. }
    18. void UART_Send_Byte(char Dat)
    19. {
    20.     /*等待发送寄存器为空，即上一个数据已经发送完成 UTRSTAT2[1]*/
    21.     while(!(UART2.UTRSTAT2 & (1 << 1)));
    22.     /*将要发送的数据写入发送寄存器 UTXH2*/
    23.     UART2.UTXH2 = Dat;
    24. }
    26. char UART_Rec_Byte(void)
    27. {
    28.     char Dat = 0;
    29.     /*判断接收寄存器是否接收到了数据 UTRSTAT2[0]*/
    30.     while(!(UART2.UTRSTAT2 & 1));
    31.     /*从接收寄存器中读取接收到的数据 URXH2*/
    32.     Dat = UART2.URXH2;
    33.     return Dat;
    34. }
    36. void UART_Send_Str(char * pstr)
    37. {
    38.     while(*pstr != '\0')
    39.         UART_Send_Byte(*pstr++);
    40. }
    42. int main()
    43. {
    44.     char RecDat = 0;
    45.     UART_Init();
    47. //    GPX2.CON = GPX2.CON & (~(0xF << 28)) | (0x1 << 28);    
    48.     GPX1.CON = GPX1.CON & (~(0xF)) | (0x1);
    50.     while(1)
    51.     {
    52.         RecDat = UART_Rec_Byte();
    53.         printf("RecDat is:%c",RecDat);
    54.         if(RecDat == '2')
    55.         {
    56.         //    GPX2.DAT = GPX2.DAT | (1 << 7);
    57.             GPX1.DAT = GPX1.DAT | 1;
    58.         }
    59.         else
    60.         {
    61.             continue;
    62.         }
    64. loop:    RecDat = UART_Rec_Byte();
    65.         printf("RECDAT:%c",RecDat);
    66.         if(RecDat == '2')PG
    67.         {
    68.         //    GPX2.DAT = GPX2.DAT | (~(1 << 7));
    69.             GPX1.DAT = GPX1.DAT & (~1);
    70.         }
    71.         else
    72.         {
    73.             goto loop;
    74.         }
    76.     }
    77.     return 0;
    78. }