Timer » Historie » Version 1
Maximilian Seesslen, 22.07.2022 18:57
| 1 | 1 | Maximilian Seesslen | h1. Timer |
|---|---|---|---|
| 2 | |||
| 3 | |||
| 4 | |||
| 5 | HCLK / Prescaler / period |
||
| 6 | |||
| 7 | Period = TPeriod * ( HCLK / Prescaler ) |
||
| 8 | |||
| 9 | |||
| 10 | Period * Prescaler = TPeriod * HCLK |
||
| 11 | |||
| 12 | 1Khz: |
||
| 13 | TPeriod = 0.001 * |
||
| 14 | |||
| 15 | Period * Prescaler = HCLK / freq |
||
| 16 | |||
| 17 | freq = HCLK/(Period*Prescaler) |
||
| 18 | |||
| 19 | Period = HCLK / freq / Prescaler |
||
| 20 | |||
| 21 | 80000000/1000=80000 |
||
| 22 | Period * Prescaler = 80000 |
||
| 23 | |||
| 24 | Sqrt: 282 |
||
| 25 | |||
| 26 | 80000000/(282*282) = 1005,9856 |
||
| 27 | |||
| 28 | 80000000/1000/282 |
||
| 29 | |||
| 30 | Period = HCLK / freq / Prescaler = 80000000/1000/1000 = 80 |
||
| 31 | |||
| 32 | freq = 80000000/(80*1000) |