ad1.c

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  AD1_HWEnDi();                        /* Enable the device */
  return ERR_OK;                       /* OK */
}

/*
** ===================================================================
**     Method      :  AD1_GetChanValue (bean ADC)
**
**     Description :
**         Returns the last measured value of the required channel.
**         Format and width of the value is a native format of the
**         A/D converter.
**     Parameters  :
**         NAME            - DESCRIPTION
**         Channel         - Channel number. If only one
**                           channel in the bean is set then this
**                           parameter is ignored.
**       * Value           - Pointer to the measured value. Data
**                           type is a byte, a word or an int. It
**                           depends on the supported modes,
**                           resolution, etc. of the AD converter.
**                           See the Version specific information for
**                           the current CPU in <General Info>.
**     Returns     :
**         ---             - Error code, possible codes:
**                           ERR_OK - OK
**                           ERR_SPEED - This device does not work in
**                           the active speed mode
**                           ERR_NOTAVAIL - Requested value not
**                           available
**                           ERR_RANGE - Parameter "Channel" out of
**                           range
**                           ERR_OVERRUN - External trigger overrun
**                           flag was detected after the last value(s)
**                           was obtained (for example by GetValue).
**                           This error may not be supported on some
**                           CPUs (see generated code).
** ===================================================================
*/
byte AD1_GetChanValue(byte Channel,void* Value)
{
  if (Channel >= 4) {                  /* Is channel number greater than or equal to 4 */
    return ERR_RANGE;                  /* If yes then error */
  }
  if (ADCSC2_ADTRG || (!(OutFlg & Table[Channel]))) { /* Is trigger mode or output flag set? */
    if (ADCSC1_COCO) {
      AD1_OutV[SumChan] = ADCRL;       /* Save measured value */
      OutFlg |= Table[SumChan];        /* Value of measured channel is available */
      if(!ADCSC2_ADTRG) {              /* If the device is not in trigger mode */
        ADCSC1 = 0x1F;                 /* Stop the device */
        ModeFlg = STOP;                /* Set the device to the stop mode */
      }
      if (!(OutFlg & Table[Channel])) { /* Is output flag set? */
        return ERR_NOTAVAIL;           /* If no then error */
      }
    }
    else {
      return ERR_NOTAVAIL;             /* If no then error */
    }
  }
  *(byte*)Value = AD1_OutV[Channel];   /* Save measured values to the output buffer */
  return ERR_OK;                       /* OK */
}

/*
** ===================================================================
**     Method      :  AD1_GetChanValue8 (bean ADC)
**
**     Description :
**         This method returns the last measured value of required
**         channel justified to the left. Compared with
**         <GetChanValue> method this method returns more accurate
**         result if the <number of conversions> is greater than 1
**         and <AD resolution> is less than 8 bits. In addition, the
**         user code dependency on <AD resolution> is eliminated.
**     Parameters  :
**         NAME            - DESCRIPTION
**         Channel         - Channel number. If only one
**                           channel in the bean is set then this
**                           parameter is ignored.
**       * Value           - Pointer to the measured value.
**     Returns     :
**         ---             - Error code, possible codes:
**                           ERR_OK - OK
**                           ERR_SPEED - This device does not work in
**                           the active speed mode
**                           ERR_NOTAVAIL - Requested value not
**                           available
**                           ERR_RANGE - Parameter "Channel" out of
**                           range
**                           ERR_OVERRUN - External trigger overrun
**                           flag was detected after the last value(s)
**                           was obtained (for example by GetValue).
**                           This error may not be supported on some
**                           CPUs (see generated code).
** ===================================================================
*/
byte AD1_GetChanValue8(byte Channel,byte *Value)
{
  if (Channel >= 4) {                  /* Is channel number greater than or equal to 4 */
    return ERR_RANGE;                  /* If yes then error */
  }
  if (ADCSC2_ADTRG || (!(OutFlg & Table[Channel]))) { /* Is trigger mode or output flag set? */
    if (ADCSC1_COCO) {
      AD1_OutV[SumChan] = ADCRL;       /* Save measured value */
      OutFlg |= Table[SumChan];        /* Value of measured channel is available */
      if(!ADCSC2_ADTRG) {              /* If the device is not in trigger mode */
        ADCSC1 = 0x1F;                 /* Stop the device */
        ModeFlg = STOP;                /* Set the device to the stop mode */
      }
      if (!(OutFlg & Table[Channel])) { /* Is output flag set? */
        return ERR_NOTAVAIL;           /* If no then error */
      }
    }
    else {
      return ERR_NOTAVAIL;             /* If no then error */
    }
  }
  *Value = AD1_OutV[Channel];          /* Save measured values to the output buffer */
  return ERR_OK;                       /* OK */
}

/*
** ===================================================================
**     Method      :  AD1_EnableIntChanTrigger (bean ADC)
**
**     Description :
**         Enables the internal trigger mode. A conversion of one
**         required channel will be launched by internal sync pulse.
**         If the <Number of conversions> property is greater than 1,
**         a conversion will be launched more than once (by an
**         internal signal) according to <Number of conversions>.
**         It's possible to disable the trigger mode by <Stop>
**         method. This EnableIntChanTrigger method is available
**         only when the <Internal trigger> property is enabled.
**     Parameters  :
**         NAME            - DESCRIPTION
**         Channel         - Channel number which will be
**                           measured at internal trigger control. If
**                           only one channel in the bean is set then
**                           this parameter is ignored.
**     Returns     :
**         ---             - Error code, possible codes:
**                           ERR_OK - OK
**                           ERR_BUSY - A conversion is already
**                           running
**                           ERR_RANGE - Parameter "Channel" out of
**                           range
** ===================================================================
*/
byte AD1_EnableIntChanTrigger(byte Channel)
{
  if (Channel >= 4) {                  /* Is channel number greater than or equal to 4 */
    return ERR_RANGE;                  /* If yes then error */
  }
  if (ModeFlg != STOP) {               /* Is the device in different mode than "stop"? */
    return ERR_BUSY;                   /* If yes then error */
  }
  ModeFlg = SINGLE;                    /* Set state of device to the measure mode */
  SumChan = Channel;                   /* Set required channel */
  ADCSC1 = 0x1F;                       /* Block the conversion */
  WaitForRes = 0;                      /* Disable wait for result*/
  ADCSC2_ADTRG = 1;                    /* Select HW trigger */
  AD1_HWEnDi();                        /* Enable the device */
  return ERR_OK;
}

/*
** ===================================================================
**     Method      :  AD1_Init (bean ADC)
**
**     Description :
**         Initializes the associated peripheral(s) and the bean's 
**         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 AD1_Init(void)
{
  OutFlg = 0;                          /* No measured value */
  SumChan = 0;
  ModeFlg = STOP;                      /* Device isn't running */
  /* ADCSC2: ADACT=0,ADTRG=0,ACFE=0,ACFGT=0,??=0,??=0,??=0,??=0 */
  setReg8(ADCSC2, 0x00);               /* Disable HW trigger and autocompare */ 
  /* ADCCFG: ADLPC=0,ADIV1=1,ADIV0=1,ADLSMP=1,MODE1=0,MODE0=0,ADICLK1=0,ADICLK0=0 */
  setReg8(ADCCFG, 0x70);               /* Set prescaler bits */ 
  /* ADCSC1: COCO=0,AIEN=0,ADCO=0,ADCH4=1,ADCH3=1,ADCH2=1,ADCH1=1,ADCH0=1 */
  setReg8(ADCSC1, 0x1F);               /* Disable the module */ 
}


/* END AD1. */

/*
** ###################################################################
**
**     This file was created by UNIS Processor Expert 3.00 [03.89]
**     for the Freescale HCS08 series of microcontrollers.
**
** ###################################################################
*/