ad1.c

来自「freescale mc9rs08le4 C code with 3,5 dig」· C语言 代码 · 共 251 行

/** ###################################################################
**     THIS BEAN MODULE IS GENERATED BY THE TOOL. DO NOT MODIFY IT.
**     Filename  : AD1.C
**     Project   : le4
**     Processor : MC9RS08LE4CPC
**     Beantype  : ADC
**     Version   : Bean 01.501, Driver 01.22, CPU db: 3.00.000
**     Compiler  : CodeWarrior RS08 C Compiler
**     Date/Time : 6/2/2009, 17:53
**     Abstract  :
**         This device "ADC" implements an A/D converter,
**         its control methods and interrupt/event handling procedure.
**     Settings  :
**         AD control register         : ADCSC1      [$0010]
**         AD control register         : ADCCFG      [$0016]
**         AD control register         : ADCRH       [$0012]
**         AD control register         : ADCRL       [$0013]
**         AD control register         : ADCCVH      [$0014]
**         AD control register         : ADCCVL      [$0015]
**         AD control register         : ADCSC2      [$0011]
**         AD control register         : APCTL1      [$0017]
**         User handling procedure     : not specified
**         Number of conversions       : 8
**         AD resolution               : 10-bit
**
**         Input pins
**
**              Port name              : PTD
**              Bit number (in port)   : 5
**              Bit mask of the port   : $0020
**              Port data register     : PTDD        [$004C]
**              Port control register  : PTDDD       [$004D]
**
**         Initialization:
**              Conversion             : Enabled
**              Event                  : Enabled
**         High speed mode
**             Prescaler               : divide-by-2
**     Contents  :
**         Measure  - byte AD1_Measure(bool WaitForResult);
**         GetValue - byte AD1_GetValue(void* Values);
**
**     (c) Copyright UNIS, a.s. 1997-2008
**     UNIS, a.s.
**     Jundrovska 33
**     624 00 Brno
**     Czech Republic
**     http      : www.processorexpert.com
**     mail      : [e-mail]
** ###################################################################*/


/* MODULE AD1. */

#include "AD1.h"

#pragma MESSAGE DISABLE C5703          /* Disable warning C5703 "Parameter is not referenced" */



static void AD1_MainMeasure(void);
/*
** ===================================================================
**     Method      :  MainMeasure (bean ADC)
**
**     Description :
**         The method performs the conversion of the input channels in 
**         the polling mode.
**         This method is internal. It is used by Processor Expert only.
** ===================================================================
*/
#define STOP            0              /* STOP state           */
#define MEASURE         1              /* MESURE state         */
#define CONTINUOUS      2              /* CONTINUOS state      */
#define SINGLE          3              /* SINGLE state         */


static const far byte Channels = 0x05; /* Content for the device control register */

static bool OutFlg;                    /* Measurement finish flag */
static byte ModeFlg;                   /* Current state of device */

word AD1_OutV;                         /* Sum of measured values */





/*
** ===================================================================
**     Method      :  MainMeasure (bean ADC)
**
**     Description :
**         The method performs the conversion of the input channels in 
**         the polling mode.
**         This method is internal. It is used by Processor Expert only.
** ===================================================================
*/
static void AD1_MainMeasure(void)
{
  byte SumCnt;                         /* Number of measured channels */
  volatile TWREG tmpTwreg;

  for (SumCnt=0; SumCnt<8; SumCnt++) {
    ADCSC1 = Channels;                 /* Start measurement of next channel */
    while (!ADCSC1_COCO) {}            /* Wait for AD conversion complete */
    tmpTwreg.b.high = ADCRH;
    tmpTwreg.b.low = ADCRL;
    AD1_OutV += tmpTwreg.w;            /* Save measured value */
  }
  OutFlg = TRUE;                       /* Measured values are available */
  ModeFlg = STOP;                      /* Set the device to the stop mode */
}
/*
** ===================================================================
**     Method      :  AD1_HWEnDi (bean ADC)
**
**     Description :
**         Enables or disables the peripheral(s) associated with the bean.
**         The method is called automatically as a part of the Enable and 
**         Disable methods and several internal methods.
**         This method is internal. It is used by Processor Expert only.
** ===================================================================
*/
void AD1_HWEnDi(void)
{
  if (ModeFlg) {                       /* Start or stop measurement? */
    OutFlg = FALSE;                    /* Output value isn't available */
    AD1_OutV = 0;                      /* Set variable for storing measured values to 0 */
    AD1_MainMeasure();
  }
}

/*
** ===================================================================
**     Method      :  AD1_Measure (bean ADC)
**
**     Description :
**         This method performs one measurement on all channels that
**         are set in the bean inspector. (Note: If the <number of
**         conversions> is more than one the conversion of A/D channels
**         is performed specified number of times.)
**     Parameters  :
**         NAME            - DESCRIPTION
**         WaitForResult   - Wait for a result of a
**                           conversion. If <interrupt service> is
**                           disabled, A/D peripheral doesn't support
**                           measuring all channels at once or Autoscan
**                           mode property isn't enabled and at the same
**                           time the <number of channel> is greater
**                           than 1, then the WaitForResult parameter is
**                           ignored and the method waits for each
**                           result every time. If the <interrupt
**                           service> is disabled and a <number of
**                           conversions> is greater than 1, the
**                           parameter is ignored and the method also
**                           waits for each result every time.
**     Returns     :
**         ---             - Error code, possible codes:
**                           ERR_OK - OK
**                           ERR_SPEED - This device does not work in
**                           the active speed mode
**                           ERR_DISABLED - Device is disabled
**                           ERR_BUSY - A conversion is already running
** ===================================================================
*/
#pragma MESSAGE DISABLE C5703 /* WARNING C5703: Parameter declared but not referenced */
byte PE_AD1_Measure(void)
{
  if (ModeFlg != STOP) {               /* Is the device in different mode than "stop"? */
    return ERR_BUSY;                   /* If yes then error */
  }
  ModeFlg = MEASURE;                   /* Set state of device to the measure mode */
  AD1_HWEnDi();                        /* Enable the device */
  return ERR_OK;                       /* OK */
}

/*
** ===================================================================
**     Method      :  AD1_GetValue (bean ADC)
**
**     Description :
**         Returns the last measured values for all channels. Format
**         and width of the value is a native format of the A/D
**         converter.
**     Parameters  :
**         NAME            - DESCRIPTION
**       * Values          - Pointer to the array that contains
**                           the measured data. 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_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_GetValue(void *Values)
{
  if (!OutFlg) {                       /* Is output flag set? */
    return ERR_NOTAVAIL;               /* If no then error */
  }
  *(word*)Values = (word)(AD1_OutV / 8); /* Save measured values to the output buffer */
  return ERR_OK;                       /* 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 = FALSE;                      /* No measured value */
  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=1,ADIV1=0,ADIV0=1,ADLSMP=1,MODE1=1,MODE0=0,ADICLK1=1,ADICLK0=1 */
  setReg8(ADCCFG, 0xBB);               /* 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 3.04 [04.19]
**     for the Freescale RS08 series of microcontrollers.
**
** ###################################################################
*/