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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1 | ingob | 1 | /***************************************************************************** |
| 2 | |||
| 3 | *****************************************************************************/ |
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| 4 | #include "main.h" |
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| 5 | volatile unsigned int CountMilliseconds = 0; |
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| 6 | volatile unsigned char Timer0Overflow; |
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| 7 | unsigned int I2C_Timeout = 0; |
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| 8 | unsigned int SIO_Timeout = 0; |
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| 9 | |||
| 10 | |||
| 11 | enum { |
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| 12 | STOP = 0, |
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| 13 | CK = 1, |
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| 14 | CK8 = 2, |
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| 15 | CK64 = 3, |
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| 16 | CK256 = 4, |
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| 17 | CK1024 = 5, |
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| 18 | T0_FALLING_EDGE = 6, |
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| 19 | T0_RISING_EDGE = 7 |
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| 20 | }; |
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| 21 | |||
| 22 | |||
| 23 | SIGNAL(SIG_OVERFLOW0) |
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| 24 | { |
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| 25 | static unsigned char cnt; |
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| 26 | static unsigned int cmps_cnt; |
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| 27 | TCNT0 -= 97; // reload |
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| 28 | Timer0Overflow++; |
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| 29 | |||
| 30 | if(++cmps_cnt == 380) |
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| 31 | { |
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| 32 | PORTB |= 0x04; |
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| 33 | cmps_cnt = 0; |
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| 34 | } |
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| 35 | else |
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| 36 | if(cmps_cnt == PwmHeading) |
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| 37 | { |
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| 38 | PORTB &= ~0x04; |
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| 39 | } |
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| 40 | |||
| 41 | if(!--cnt) |
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| 42 | { |
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| 43 | cnt = 10; |
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| 44 | CountMilliseconds += 1; |
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| 45 | if(I2C_Timeout) I2C_Timeout--; |
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| 46 | if(SIO_Timeout) SIO_Timeout--; |
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| 47 | } |
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| 48 | } |
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| 49 | |||
| 50 | |||
| 51 | void Timer0_Init(void) |
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| 52 | { |
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| 53 | TCCR0B = TIMER_TEILER; // Starten des Timers |
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| 54 | // TCNT0 = 100; // reload |
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| 55 | TIM0_START; |
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| 56 | TIMER2_INT_ENABLE; |
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| 57 | } |
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| 58 | |||
| 59 | |||
| 60 | unsigned int SetDelay(unsigned int t) |
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| 61 | { |
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| 62 | return(CountMilliseconds + t - 1); |
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| 63 | } |
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| 64 | |||
| 65 | char CheckDelay (unsigned int t) |
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| 66 | { |
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| 67 | return(((t - CountMilliseconds) & 0x8000) >> 8); |
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| 68 | } |
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| 69 | |||
| 70 | void Delay_ms(unsigned int w) |
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| 71 | { |
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| 72 | unsigned int akt; |
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| 73 | akt = SetDelay(w); |
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| 74 | while (!CheckDelay(akt)); |
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| 75 | } |