www.pudn.com > ucosii_block.rar > AIO.H

/* 
********************************************************************************************************* 
*                                          Analog I/O Module 
* 
*                            (c) Copyright 1999, Jean J. Labrosse, Weston, FL 
*                                          All Rights Reserved 
* 
* Filename   : AIO.H 
* Programmer : Jean J. Labrosse 
********************************************************************************************************* 
*/ 
 
#ifdef   AIO_GLOBALS 
#define  AIO_EXT 
#else 
#define  AIO_EXT extern 
#endif 
 
/* 
********************************************************************************************************* 
*                                        CONFIGURATION CONSTANTS 
********************************************************************************************************* 
*/ 
 
#ifndef  CFG_H 
 
#define  AIO_TASK_PRIO             40 
#define  AIO_TASK_DLY             100       /* Task execution period in milliseconds                   */ 
#define  AIO_TASK_STK_SIZE        512 
 
#define  AIO_MAX_AI                 8       /* Maximum number of Analog Input  Channels (1..250)       */ 
#define  AIO_MAX_AO                 8       /* Maximum number of Analog Output Channels (1..250)       */ 
 
#endif 
/*$PAGE*/ 
/* 
********************************************************************************************************* 
*                                            DATA TYPES 
********************************************************************************************************* 
*/ 
 
typedef struct aio {                        /* ANALOG I/O CHANNEL DATA STRUCTURE                       */ 
    BOOLEAN   AIOBypassEn;                  /* Bypass enable switch (Bypass when TRUE)                 */ 
    INT16S    AIORaw;                       /* Raw counts of ADC or DAC                                */ 
    FP32      AIOEU;                        /* Engineering units of AI channel                         */ 
    FP32      AIOGain;                      /* Total gain   (AIOCalGain   * AIOConvGain)               */ 
    FP32      AIOOffset;                    /* Total offset (AIOCalOffset + AIOConvOffset)             */ 
    INT16S    AIOLim;                       /* Maximum count of an analog output channel               */ 
    INT8U     AIOPassCnts;                  /* Pass counts                                             */ 
    INT8U     AIOPassCtr;                   /* Pass counter (loaded from PassCnts)                     */ 
    FP32      AIOCalGain;                   /* Calibration gain                                        */ 
    FP32      AIOCalOffset;                 /* Calibration offset                                      */ 
    FP32      AIOConvGain;                  /* Conversion gain                                         */ 
    FP32      AIOConvOffset;                /* Conversion offset                                       */ 
    FP32      AIOScaleIn;                   /* Input  to   scaling function                            */ 
    FP32      AIOScaleOut;                  /* Output from scaling function                            */ 
    void    (*AIOScaleFnct)(struct aio *paio);   /* Function to execute for further processing         */ 
    void     *AIOScaleFnctArg;                   /* Pointer to argument to pass to 'AIOScaleFnct'      */ 
} AIO; 
 
/* 
********************************************************************************************************* 
*                                          GLOBAL VARIABLES 
********************************************************************************************************* 
*/ 
 
AIO_EXT   AIO      AITbl[AIO_MAX_AI]; 
AIO_EXT   AIO      AOTbl[AIO_MAX_AO]; 
 
/*$PAGE*/ 
/* 
********************************************************************************************************* 
*                                          FUNCTION PROTOTYPES 
********************************************************************************************************* 
*/ 
 
void     AIOInit(void); 
 
INT8U    AICfgCal(INT8U n, FP32 gain, FP32 offset); 
INT8U    AICfgConv(INT8U n, FP32 gain, FP32 offset, INT8U pass); 
INT8U    AICfgScaling(INT8U n, void (*fnct)(AIO *paio), void *arg); 
INT8U    AISetBypass(INT8U n, FP32 val); 
INT8U    AISetBypassEn(INT8U n, BOOLEAN state); 
INT8U    AIGet(INT8U n, FP32 *pval); 
 
INT8U    AOCfgCal(INT8U n, FP32 gain, FP32 offset); 
INT8U    AOCfgConv(INT8U n, FP32 gain, FP32 offset, INT16S lim, INT8U pass); 
INT8U    AOCfgScaling(INT8U n, void (*fnct)(AIO *paio), void *arg); 
INT8U    AOSet(INT8U n, FP32 val); 
INT8U    AOSetBypass(INT8U n, FP32 val); 
INT8U    AOSetBypassEn(INT8U n, BOOLEAN state); 
 
void     AIOInitIO(void);                        /* Hardware dependant functions                       */ 
INT16S   AIRd(INT8U ch); 
void     AOWr(INT8U ch, INT16S cnts);