BEEP用タイマ設定メソッドを追加
bitnos5/trunk/kernel/pit.cpp (diff)
bitnos5/trunk/include/bitnos/pit.h (diff)| @@ -35,3 +35,26 @@ | ||
| 35 | 35 | { |
| 36 | 36 | timman->IntHandler(); |
| 37 | 37 | } |
| 38 | + | |
| 39 | +void PIT::BeetSetCounter(int cnt) | |
| 40 | +{ | |
| 41 | + io_out8(PIT::Port::CR, PIT::CH::CH2 | PIT::CountAccessMode::LH | PIT::CountMode::M3Bin); | |
| 42 | + io_out8(PIT::Port::Cnt2, cnt & 0x00ff); | |
| 43 | + io_out8(PIT::Port::Cnt2, (cnt >> 8) & 0x00ff); | |
| 44 | +} | |
| 45 | + | |
| 46 | +void PIT::BeepOn() | |
| 47 | +{ | |
| 48 | + uint8_t reg = io_in8(PIT::Port::System); | |
| 49 | + reg |= 0x03; | |
| 50 | + reg &= 0x0f; | |
| 51 | + io_out8(PIT::Port::System, reg); | |
| 52 | +} | |
| 53 | + | |
| 54 | +void PIT::BeepOff() | |
| 55 | +{ | |
| 56 | + uint8_t reg = io_in8(PIT::Port::System); | |
| 57 | + reg &= 0x0d; | |
| 58 | + io_out8(PIT::Port::System, reg); | |
| 59 | +} | |
| 60 | + |
| @@ -59,6 +59,12 @@ | ||
| 59 | 59 | static void Init(); |
| 60 | 60 | |
| 61 | 61 | static void IntHandler(); |
| 62 | + | |
| 63 | + static void BeetSetCounter(int cnt); | |
| 64 | + | |
| 65 | + static void BeepOn(); | |
| 66 | + | |
| 67 | + static void BeepOff(); | |
| 62 | 68 | }; |
| 63 | 69 | |
| 64 | 70 | #endif /* PIT_H_ */ |
