fesc_5554_esci.c

MPC5554处理器的初始化例程

/*================================================*/
/*                      ESCI                      */
/*================================================*/ 
/**************************************************************************/
void init_ESCI()
{
    //ESCI_A.CR1.R = 0x01A1000C;      //19200@128MHz
    //ESCI_A.CR1.R = 0x0341000C;      //9600@128MHz
    //ESCI_A.CR1.R = 0x0187000C;      //19200@120MHz
    //ESCI_A.CR1.R = 0x030D000C;      //9600@120MHz
    ESCI_A.CR1.R = 0x0041000C;      //115200@120MHz
    
    pad_func_config(PIN_TXD_A_GPIO89,PRIMARY_FUNCTION);     //SCI
    pad_func_config(PIN_RXD_A_GPIO90,PRIMARY_FUNCTION);     //SCI
    
    //ESCI_B.CR1.B.SBR = 781; //
    //ESCI_B.CR1.B.TE  = 1; 
    //ESCI_B.CR1.B.RE  = 1;  
    ESCI_B.CR1.R = 0x0187000C;
    pad_func_config(PIN_TXD_B_GPIO91,PRIMARY_FUNCTION);     //SCI
    pad_func_config(PIN_RXD_B_GPIO92,PRIMARY_FUNCTION);     //SCI
}

void send_c_ESCIA(uint8_t schar)
{
   while(ESCI_A.SR.B.TDRE ==0) {}
   ESCI_A.SR.R = 0x80000000;
   ESCI_A.DR.B.D = schar;
}

uint8_t get_c_ESCI_A(void)
{  uint8_t RecData;
   while(ESCI_A.SR.B.RDRF == 0 ) {}
   RecData = ESCI_A.DR.B.D; 
   ESCI_A.SR.R = 0x20000000;
   return(RecData);
}

void send_c_ESCIB(uint8_t schar)
{
   while(ESCI_B.SR.B.TDRE == 1){}
   ESCI_B.SR.R = 0x80000000;
   ESCI_B.DR.B.D = schar;
}

uint8_t get_c_ESCI_B(void)
{  uint8_t RecData;
   while(ESCI_B.SR.B.RDRF == 0 ) {}
   RecData = ESCI_B.DR.B.D; 
   ESCI_B.SR.R = 0x20000000;
   return(RecData);
  }
  
  
  
  
  
  
  
  
  
  
  
  
//end of file