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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 310 | pangu | 1 | /***************************************************************************** |
| 2 | |||
| 3 | *****************************************************************************/ |
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| 4 | #include "main.h" |
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| 5 | |||
| 6 | volatile unsigned int CountMilliseconds = 0; |
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| 7 | volatile unsigned char Timer0Overflow; |
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| 8 | volatile unsigned int flag10ms; |
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| 9 | |||
| 10 | enum { |
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| 11 | STOP = 0, |
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| 12 | CK = 1, |
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| 13 | CK8 = 2, |
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| 14 | CK64 = 3, |
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| 15 | CK256 = 4, |
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| 16 | CK1024 = 5, |
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| 17 | T0_FALLING_EDGE = 6, |
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| 18 | T0_RISING_EDGE = 7 |
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| 19 | }; |
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| 20 | |||
| 21 | |||
| 22 | SIGNAL(SIG_OVERFLOW0) |
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| 23 | { |
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| 24 | static unsigned char cnt=0; |
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| 25 | |||
| 26 | Timer0Overflow++; |
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| 27 | if(!cnt--) |
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| 28 | { |
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| 29 | cnt = 3; |
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| 30 | CountMilliseconds += 1; |
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| 31 | if(!(CountMilliseconds % 10)) { |
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| 32 | flag10ms = 1; |
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| 33 | } |
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| 34 | } |
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| 35 | } |
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| 36 | |||
| 37 | |||
| 38 | void Timer_Init(void) |
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| 39 | { |
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| 40 | TCCR0 = CK8; |
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| 41 | TIM0_START; |
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| 42 | } |
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| 43 | |||
| 44 | |||
| 45 | unsigned int SetDelay(unsigned int t) |
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| 46 | { |
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| 47 | return(CountMilliseconds + t - 1); |
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| 48 | } |
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| 49 | |||
| 50 | char CheckDelay (unsigned int t) |
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| 51 | { |
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| 52 | return(((t - CountMilliseconds) & 0x8000) >> 8); |
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| 53 | } |
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| 54 | |||
| 55 | void Delay_ms(unsigned int w) |
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| 56 | { |
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| 57 | unsigned int akt; |
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| 58 | akt = SetDelay(w); |
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| 59 | while (!CheckDelay(akt)); |
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| 60 | } |