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/** ###################################################################

**     THIS BEAN MODULE IS GENERATED BY THE TOOL. DO NOT MODIFY IT.

**     Filename  : COM0.C

**     Project   : RTOSDemo

**     Processor : MC9S12DP256BCPV

**     Beantype  : AsynchroSerial

**     Version   : Bean 02.231, Driver 01.08, CPU db: 2.87.283

**     Compiler  : Metrowerks HC12 C Compiler

**     Date/Time : 19/06/2005, 15:07

**     Abstract  :

**         This bean "AsynchroSerial" implements an asynchronous serial

**         communication. The bean supports different settings of

**         parity, word width, stop-bit and communication speed,

**         user can select interrupt or polling handler.

**         Communication speed can be changed also in runtime.

**         The bean requires one on-chip asynchronous serial channel.

**     Settings  :

**         Serial channel              : SCI0

**

**         Protocol

**             Init baud rate          : 38400baud

**             Width                   : 8 bits

**             Stop bits               : 1

**             Parity                  : none

**             Breaks                  : Disabled

**

**         Registers

**             Input buffer            : SCI0DRL   [207]

**             Output buffer           : SCI0DRL   [207]

**             Control register        : SCI0CR1   [202]

**             Mode register           : SCI0CR2   [203]

**             Baud setting reg.       : SCI0BD    [200]

**             Special register        : SCI0SR1   [204]

**

**         Input interrupt

**             Vector name             : INT_SCI0

**             Priority                : 1

**

**         Output interrupt

**             Vector name             : INT_SCI0

**             Priority                : 1

**

**         Used pins                   :

**             ----------------------------------------------------

**               Function | On package |    Name

**             ----------------------------------------------------

**                Input   |     89     |  PS0_RxD0

**                Output  |     90     |  PS1_TxD0

**             ----------------------------------------------------

**

**

**         Used baud modes             :

**             ----------------------------------------------------

**               No. |    Mode ID      |  Baud rate

**             ----------------------------------------------------

**                0  |  Bm_38400baud   |  38400baud

**                1  |  Bm_19200baud   |  19200baud

**                2  |  Bm_9600baud    |  9600baud

**                3  |  Bm_4800baud    |  4800baud

**             ----------------------------------------------------

**     Contents  :

**         SetBaudRateMode - byte COM0_SetBaudRateMode(byte Mod);

**

**     (c) Copyright UNIS, spol. s r.o. 1997-2002

**     UNIS, spol. s r.o.

**     Jundrovska 33

**     624 00 Brno

**     Czech Republic

**     http      : www.processorexpert.com

**     mail      : info@processorexpert.com

** ###################################################################*/

/* MODULE COM0. */

#pragma MESSAGE DISABLE C4002 /* WARNING C4002: Result not used is ignored */

#pragma MESSAGE DISABLE C4301 /* INFORMATION C4301: Inline expansion done for function call */

#include "COM0.h"

#include "TickTimer.h"

#include "Byte1.h"

/* Definition of DATA and CODE segments for this bean. User can specify where

   these segments will be located on "Build options" tab of the selected CPU bean. */

#pragma DATA_SEG COM0_DATA             /* Data section for this module. */

#pragma CODE_SEG COM0_CODE             /* Code section for this module. */

#define OVERRUN_ERR      1             /* Overrun error flag bit   */

#define FRAMING_ERR      2             /* Framing error flag bit   */

#define PARITY_ERR       4             /* Parity error flag bit    */

#define CHAR_IN_RX       8             /* Char is in RX buffer     */

#define FULL_TX          16            /* Full transmit buffer     */

#define RUNINT_FROM_TX   32            /* Interrupt is in progress */

#define FULL_RX          64            /* Full receive buffer      */

#define NOISE_ERR        128           /* Noise erorr flag bit     */

#define IDLE_ERR         256           /* Idle character flag bit  */

#define BREAK_ERR        512           /* Break detect             */

static word SerFlag;                   /* Flags for serial communication */

                                       /* Bits: 0 - OverRun error */

                                       /*       1 - Framing error */

                                       /*       2 - Parity error */

                                       /*       3 - Char in RX buffer */

                                       /*       4 - Full TX buffer */

                                       /*       5 - Running int from TX */

                                       /*       6 - Full RX buffer */

                                       /*       7 - Noise error */

                                       /*       8 - Idle character  */

                                       /*       9 - Break detected  */

                                       /*      10 - Unused */

static word PrescHigh;

static byte NumMode;                   /* Number of selected baud mode */

/*

** ===================================================================

**     Method      :  HWEnDi (bean AsynchroSerial)

**

**     Description :

**         This method is internal. It is used by Processor Expert

**         only.

** ===================================================================

*/

static void HWEnDi(void)

{

    SCI0CR2_TE = 1;                    /* Enable transmitter */

    SCI0CR2_RE = 1;                    /* Enable receiver */

    SCI0CR2_RIE = 1;                   /* Enable recieve interrupt */

}

/*

** ===================================================================

**     Method      :  COM0_SetBaudRateMode (bean AsynchroSerial)

**

**     Description :

**         This method changes the channel communication speed (baud

**         rate). This method can be used only if you specify a list

**         of possible period settings at design time (see 

**         dialog box> - Runtime setting - from a list of values).

**         Each of these settings constitutes a mode and Processor

**         Expert^[TM] assigns them a mode identifier. The prescaler

**         and compare values corresponding to each mode are

**         calculated at design time. You may switch modes at

**         runtime by referring only to a mode identifier. No

**         run-time calculations are performed, all the calculations

**         are performed at design time.

**     Parameters  :

**         NAME            - DESCRIPTION

**         Mod             - Timing mode to set

**     Returns     :

**         ---             - Error code, possible codes:

**                           ERR_OK - OK

**                           ERR_SPEED - This device does not work in

**                           the active speed mode

** ===================================================================

*/

byte COM0_SetBaudRateMode(byte Mod)

{

  static const word COM0_PrescHigh[4] = {41,81,163,326};

  if(Mod >= 4)                         /* Is mode in baud mode list */

    return ERR_VALUE;                  /* If no then error */

  NumMode = Mod;                       /* New baud mode */

  PrescHigh = COM0_PrescHigh[Mod];     /* Prescaler in high speed mode */

  SCI0BD = PrescHigh;                  /* Set prescaler bits */

  return ERR_OK;                       /* OK */

}

/*

** ===================================================================

**     Method      :  COM0_Init (bean AsynchroSerial)

**

**     Description :

**         This method is internal. It is used by Processor Expert

**         only.

** ===================================================================

*/

void COM0_Init(void)

{

  PrescHigh = 41;                      /* Precaler in high speed mode */

  SerFlag = 0;                         /* Reset flags */

  NumMode = 0;                         /* Number of selected baud mode */

  /* SCI0CR1: LOOPS=0,SCISWAI=1,RSRC=0,M=0,WAKE=0,ILT=0,PE=0,PT=0 */

  SCI0CR1 = 64;                        /* Set the SCI configuration */

  /* SCI0SR2: ??=0,??=0,??=0,??=0,??=0,BRK13=0,TXDIR=0,RAF=0 */

  SCI0SR2 = 0;                         /* Set the Break Character Length and Transmitter pin data direction in Single-wire mode */

  SCI0SR1;                             /* Reset interrupt request flags */

  /* SCI0CR2: SCTIE=0,TCIE=0,RIE=0,ILIE=0,TE=0,RE=0,RWU=0,SBK=0 */

  SCI0CR2 = 0;                         /* Disable error interrupts */

  SCI0BD = PrescHigh;                  /* Set prescaler bits */

  HWEnDi();                            /* Enable/disable device according to status flags */

}

/* END COM0. */

/*

** ###################################################################

**

**     This file was created by UNIS Processor Expert 03.33 for

**     the Motorola HCS12 series of microcontrollers.

**

** ###################################################################

*/