hanqi1236的博客

void clock_init(void){
  /* Common initialization of the write once registers */
  /* SOPT: COPE=0,COPT=1,STOPE=0,??=1,??=0,??=0,??=1,??=1 */
  SOPT=0x53;                 

  /*  System clock initialization */
  /* ICGC1: HGO=0,RANGE=1,REFS=1,CLKS1=1,CLKS0=1,OSCSTEN=1,LOCD=0,??=0 */
  ICGC1=0x7C;                
  /* ICGC2: LOLRE=0,MFD2=0,MFD1=1,MFD0=1,LOCRE=0,RFD2=0,RFD1=0,RFD0=0 */
  ICGC2=0x30;                
  if (*(unsigned char*)0xFFBE != 0xFF) { /* Test if the device trim value is stored on the specified address */
    ICGTRM = *(unsigned char*)0xFFBE;  /* Initialize ICGTRM register from a non volatile memory */
  }
  while(!ICGS1_LOCK) {;                 /* Wait */
  }

}
/*
** ===================================================================
**     Method      :  uart1_init (component AsynchroSerial)
**
**     Description :
**         Initializes the associated peripheral(s) and the bean internal
**         variables. The method is called automatically as a part of the
**         application initialization code.
**         This method is internal. It is used by Processor Expert only.
** ===================================================================
*/
void uart1_init(void)
{
  /* SCI1C1: LOOPS=0,SCISWAI=0,RSRC=0,M=0,WAKE=0,ILT=0,PE=0,PT=0 */
  SCI1C1=0x00;               /* Configure the SCI */
  /* SCI1C3: R8=0,T8=0,TXDIR=0,TXINV=0,ORIE=0,NEIE=0,FEIE=0,PEIE=0 */
  SCI1C3=0x00;               /* Disable error interrupts */
  /* SCI1S2: LBKDIF=0,RXEDGIF=0,??=0,RXINV=0,RWUID=0,BRK13=0,LBKDE=0,RAF=0 */
  SCI1S2=0x00;               
  /* SCI1C2: TIE=0,TCIE=0,RIE=0,ILIE=0,TE=0,RE=0,RWU=0,SBK=0 */
  SCI1C2=0x00;               /* Disable all interrupts */
  SCI1BDH = 0x00;                      /* Set high divisor register (enable device) */
  SCI1BDL = 0x82;                      /* Set low divisor register (enable device) */
  SCI1C2_TE = 0x01;                     /* Enable transmitter */
  SCI1C2_RE = 0x01;                     /* Enable receiver */
}

/*
** ===================================================================
**     Method      :  uart1_recvchar (component AsynchroSerial)
**
**     Description :
**         If any data is received, this method returns one
**         character, otherwise it returns an error code (it does
**         not wait for data). This method is enabled only if the
**         receiver property is enabled.
**         [Note:] Because the preferred method to handle error and
**         break exception in the interrupt mode is to use events
**         <&111nError> and the return value ERR_RXEMPTY has
**         higher priority than other error codes. As a consequence
**         the information about an exception in interrupt mode is
**         returned only if there is a valid character ready to be
**         read.
**     Parameters  :
**         NAME            - DESCRIPTION
**       * Chr             - Pointer to a received character
**     Returns     :
**         ---             - Error code, possible codes:
**                           ERR_OK - OK
**                           ERR_SPEED - This device does not work in
**                           the active speed mode
**                           ERR_RXEMPTY - No data in receiver
**                           ERR_BREAK - Break character is detected
**                           (only when the
**                           property is disabled and the **                           signal> property is enabled)
**                           ERR_COMMON - common error occurred (the
**                           method can be used for error
**                           specification)
** ===================================================================
*/
unsigned char uart1_recvchar(unsigned char *ch)
{
  unsigned char Result = 0;                /* Return error code */
  unsigned char StatReg = SCI1S1;               /* Read status register */

  if (StatReg & (SCI1S1_OR_MASK|SCI1S1_NF_MASK|SCI1S1_FE_MASK|SCI1S1_PF_MASK)) { /* Is any error set? */
    Result = 0;               /* If yes then set common error value */
  }
    else if (!(StatReg & SCI1S1_RDRF_MASK)) { /* Is the reciver empty and no error is set? */
      return 0;                /* If yes then error */
    }
    else {
                                /* Intentionally left empty due to compatibility with MISRA rule 60*/
      *ch = SCI1D;                        /* Read data from the receiver */
      Result=1;
    }
  return Result;                       /* Return error code */
}

/*
** ===================================================================
**     Method      :  uart1_sendchar (component AsynchroSerial)
**
**     Description :
**         Sends one character to the channel. If the bean is
**         temporarily disabled (Disable method) SendChar method
**         only stores data into an output buffer. In case of a zero
**         output buffer size, only one character can be stored.
**         Enabling the bean (Enable method) starts the transmission
**         of the stored data. This method is available only if the
**         transmitter property is enabled.
**     Parameters  :
**         NAME            - DESCRIPTION
**         Chr             - Character to send
**     Returns     :
**         ---             - Error code, possible codes:
**                           ERR_OK - OK
**                           ERR_SPEED - This device does not work in
**                           the active speed mode
**                           ERR_TXFULL - Transmitter is full
** ===================================================================
*/
unsigned char uart1_sendchar(unsigned char ch)
{
  if (!SCI1S1_TDRE) {                  /* Is the transmitter empty? */
    return 0;                 /* If no then error */
  }
  SCI1D = (unsigned char)ch;                   /* Store char to the transmitter register */
  return 0;                       /* OK */
}

 

 

void main(void) {
  unsigned char ch;
  EnableInterrupts; /* enable interrupts */
  /* include your code here */
  clock_init();
  uart1_init();

  for(;;) {
    if(uart1_recvchar(&ch)){
      uart1_sendchar(ch);
    }
 
   // __RESET_WATCHDOG(); /* feeds the dog */
  } /* loop forever */
  /* please make sure that you never leave main */
}