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 *
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 *
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 *   Functions for controlling blinds
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 *   Functions for controlling blinds
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 *
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 *
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 *********************************************************************
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 *********************************************************************
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 * FileName:        $HeadURL: https://svn.auml.se/svn/HomeAutomation/trunk/EmbeddedSoftware/PIC/canTemp/Source/blinds.c $
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 * FileName:        $HeadURL: https://svn.auml.se/svn/HomeAutomation/trunk/EmbeddedSoftware/PIC/canTemp/Source/blinds.c $
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 * Last changed:    $LastChangedDate: 2007-01-30 12:53:25 +0100 (Tue, 30 Jan 2007) $
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 * Last changed:    $LastChangedDate: 2007-01-31 14:04:02 +0100 (Wed, 31 Jan 2007) $
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 * By:              $LastChangedBy: johboh $
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 * By:              $LastChangedBy: johboh $
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 * Revision:        $Revision: 276 $
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 * Revision:        $Revision: 277 $
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 ********************************************************************/
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 ********************************************************************/
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#include <blinds.h>
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#include <blinds.h>
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#ifdef USE_BLINDS
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#ifdef USE_BLINDS
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BLINDS_DIR mode = MIDDLE;
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WORD numSteps = 0;
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BYTE minCounter = 0;
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static unsigned int timerVal = 50536;
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/*
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/*
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*   Function: blindsInit
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*   Function: blindsInit
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*
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*
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*   Input:  none.
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*   Input:  none.
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*   Output: none.
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*   Output: none.
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*   Pre-conditions: none
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*   Pre-conditions: none
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*   Affects: none.
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*   Affects: none.
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*   Depends: none.
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*   Depends: none.
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*/
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*/
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void blindsInit()
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void blindsInit()
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{
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{
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    // setup timer one on 0.5ms.
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    // setup timer one on 0.5ms.
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    // 16 bit write, system clock, prescale 2 bit, oscillator off,
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    // 16 bit write, system clock, prescale 2 bit, oscillator off,
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    T1CON = 0b11000001;
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    T1CON = 0b11000001;
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    TMR1H=((TMR1_VAL&0xFF00)>>8);
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    TMR1H=((timerVal&0xFF00)>>8);
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    TMR1L=(TMR1_VAL&0xFF);
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    TMR1L=(timerVal&0xFF);
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    PIR1bits.TMR1IF = 0;
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    PIR1bits.TMR1IF = 0;
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    PIE1bits.TMR1IE = 1;
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    PIE1bits.TMR1IE = 1;
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    IPR1bits.TMR1IP = 1; // high prior?
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    IPR1bits.TMR1IP = 1; // high prior?
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}
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}
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/*
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/*
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*   Function: blindsTurn
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*   Function: blindsTurn
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*
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*
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*   Input:  Direction and number of steps to perform.
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*   Input:  Angle to turn to.
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*   Output: none.
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*   Output: none.
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*   Pre-conditions: none
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*   Pre-conditions: none
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*   Affects: none.
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*   Affects: none.
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*   Depends: none.
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*   Depends: none.
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*/
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*/
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void blindsTurn(BLINDS_DIR dir, WORD steps)
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void blindsTurn(signed int angle)
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{
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{
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    mode = dir;
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    // 65536-TIME/0,0000001
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    minCounter = 0;
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    // -90 0.5 ms = 60536 (5000)
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    numSteps = steps;
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    // 0   1.5 ms = 50536 (15000)
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}
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/*
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*   Function: blindsStop
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    // 90  2.5 ms = 40536 (25000)
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*
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*   Input:  Stop blind at current position.
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    if (angle<-90) timerVal=60536;
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*   Output: none.
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*   Pre-conditions: none
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    else if (angle>90) timerVal=40536;
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*   Affects: none.
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*   Depends: none.
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    else
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*/
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    {
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void blindsStop()
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        timerVal=60536-((90+angle)*111.111);
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{
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    }
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    numSteps = 0;
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}
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}
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/*
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/*
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*   Function: blindsISR
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*   Function: blindsISR
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*/
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*/
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void blindsISR(void)
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void blindsISR(void)
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{
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{
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    if (PIR1bits.TMR1IF == 1 && PIE1bits.TMR1IE == 1)
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    if (PIR1bits.TMR1IF == 1 && PIE1bits.TMR1IE == 1)
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    {
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    {
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        TMR1H=((TMR1_VAL&0xFF00)>>8);
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        TMR1H=((timerVal&0xFF00)>>8);
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        TMR1L=(TMR1_VAL&0xFF);
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        TMR1L=(timerVal&0xFF);
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 - 
 
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        if (numSteps>1)
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        {
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            if ((--minCounter)<1)
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            {
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                numSteps--;
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                BLINDS0_IO=~BLINDS0_IO;
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        BLINDS0_IO=~BLINDS0_IO;
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                minCounter=mode;
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            }  
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        }
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        PIR1bits.TMR1IF = 0;
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        PIR1bits.TMR1IF = 0;
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    }
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    }
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}
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}
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