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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 275 | johboh | 1 | /********************************************************************* |
| 2 | * |
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| 3 | * Functions for controlling blinds |
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| 4 | * |
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| 5 | ********************************************************************* |
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| 6 | * FileName: $HeadURL: https://svn.auml.se/svn/HomeAutomation/trunk/EmbeddedSoftware/PIC/canTemp/Source/blinds.c $ |
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| 7 | * Last changed: $LastChangedDate: 2007-03-03 19:07:14 +0100 (Sat, 03 Mar 2007) $ |
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| 8 | * By: $LastChangedBy: johboh $ |
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| 9 | * Revision: $Revision: 353 $ |
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| 10 | ********************************************************************/ |
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| 11 | #include <blinds.h> |
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| 12 | |||
| 13 | #ifdef USE_BLINDS |
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| 14 | |||
| 347 | johboh | 15 | static WORD timerVal = 50536; |
| 16 | static WORD turnOffIO = 0; |
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| 353 | johboh | 17 | static BYTE currentPrecent = 0; |
| 347 | johboh | 18 | static BYTE dutyOffCounter = 0; |
| 275 | johboh | 19 | |
| 20 | /* |
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| 21 | * Function: blindsInit |
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| 22 | * |
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| 23 | * Input: none. |
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| 24 | * Output: none. |
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| 25 | * Pre-conditions: none |
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| 26 | * Affects: none. |
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| 27 | * Depends: none. |
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| 28 | */ |
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| 29 | void blindsInit() |
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| 30 | { |
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| 31 | // setup timer one on 0.5ms. |
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| 32 | // 16 bit write, system clock, prescale 2 bit, oscillator off, |
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| 33 | T1CON = 0b11000001; |
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| 353 | johboh | 34 | TMR1H=(BYTE)((timerVal&0xFF00)>>8); |
| 277 | johboh | 35 | TMR1L=(timerVal&0xFF); |
| 275 | johboh | 36 | PIR1bits.TMR1IF = 0; |
| 37 | PIE1bits.TMR1IE = 1; |
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| 353 | johboh | 38 | IPR1bits.TMR1IP = 1; // high prior |
| 275 | johboh | 39 | } |
| 40 | |||
| 41 | /* |
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| 339 | johboh | 42 | * Function: blindsGetAngle |
| 43 | * |
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| 44 | * Input: none. |
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| 45 | * Output: angle. |
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| 46 | * Pre-conditions: none |
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| 47 | * Affects: none. |
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| 48 | * Depends: none. |
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| 49 | */ |
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| 50 | BYTE blindsGetPrecent() |
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| 51 | { |
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| 52 | return currentPrecent; |
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| 53 | } |
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| 54 | |||
| 55 | |||
| 56 | /* |
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| 276 | johboh | 57 | * Function: blindsTurn |
| 275 | johboh | 58 | * |
| 277 | johboh | 59 | * Input: Angle to turn to. |
| 275 | johboh | 60 | * Output: none. |
| 61 | * Pre-conditions: none |
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| 62 | * Affects: none. |
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| 63 | * Depends: none. |
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| 64 | */ |
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| 339 | johboh | 65 | void blindsTurn(BYTE precent) |
| 275 | johboh | 66 | { |
| 353 | johboh | 67 | |
| 277 | johboh | 68 | // 65536-TIME/0,0000001 |
| 69 | // -90 0.5 ms = 60536 (5000) |
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| 70 | // 0 1.5 ms = 50536 (15000) |
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| 71 | // 90 2.5 ms = 40536 (25000) |
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| 275 | johboh | 72 | |
| 339 | johboh | 73 | BLINDS0P_IO=1; |
| 74 | turnOffIO = IO_TIMEOUT; |
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| 75 | |||
| 347 | johboh | 76 | currentPrecent = precent; |
| 77 | if (precent>100) { currentPrecent = 100; } |
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| 78 | if (precent<0) { currentPrecent = 0; } |
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| 79 | dutyOffCounter = 0; |
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| 339 | johboh | 80 | |
| 353 | johboh | 81 | timerVal=60536-(unsigned int)((90+(-1.05*(unsigned int)currentPrecent+60))*111.111); |
| 82 | |||
| 275 | johboh | 83 | } |
| 84 | |||
| 276 | johboh | 85 | |
| 275 | johboh | 86 | /* |
| 276 | johboh | 87 | * Function: blindsISR |
| 275 | johboh | 88 | * |
| 276 | johboh | 89 | * Input: none. |
| 275 | johboh | 90 | * Output: none. |
| 91 | * Pre-conditions: none |
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| 92 | * Affects: none. |
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| 93 | * Depends: none. |
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| 94 | */ |
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| 95 | void blindsISR(void) |
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| 96 | { |
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| 97 | if (PIR1bits.TMR1IF == 1 && PIE1bits.TMR1IE == 1) |
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| 98 | { |
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| 353 | johboh | 99 | |
| 347 | johboh | 100 | WORD timerValBuffer = timerVal; |
| 353 | johboh | 101 | |
| 347 | johboh | 102 | dutyOffCounter++; |
| 275 | johboh | 103 | |
| 347 | johboh | 104 | if (BLINDS0_IO==0 && dutyOffCounter>4) |
| 105 | { |
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| 106 | BLINDS0_IO=1; |
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| 107 | dutyOffCounter=0; |
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| 108 | } |
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| 109 | else if (BLINDS0_IO==0 && dutyOffCounter<=4) |
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| 110 | { |
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| 111 | timerValBuffer = DUTY_OFF_DELAY; |
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| 112 | } |
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| 113 | else if (BLINDS0_IO==1) |
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| 114 | { |
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| 115 | BLINDS0_IO=0; |
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| 116 | } |
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| 353 | johboh | 117 | |
| 118 | TMR1H=(BYTE)((timerValBuffer&0xFF00)>>8); |
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| 347 | johboh | 119 | TMR1L=(timerValBuffer&0xFF); |
| 120 | |||
| 353 | johboh | 121 | |
| 339 | johboh | 122 | if (turnOffIO--<1) |
| 123 | { |
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| 124 | BLINDS0P_IO=0; |
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| 125 | } |
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| 353 | johboh | 126 | |
| 339 | johboh | 127 | |
| 275 | johboh | 128 | PIR1bits.TMR1IF = 0; |
| 129 | } |
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| 130 | } |
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| 131 | |||
| 132 | #endif |