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| 1 | #pypp 0 |
| 2 | // Iris: micro-kernel for a capability-based operating system. |
| 3 | // boot-programs/metronome.ccp: Userspace program. |
| 4 | // Copyright 2009 Bas Wijnen <wijnen@debian.org> |
| 5 | // |
| 6 | // This program is free software: you can redistribute it and/or modify |
| 7 | // it under the terms of the GNU General Public License as published by |
| 8 | // the Free Software Foundation, either version 3 of the License, or |
| 9 | // (at your option) any later version. |
| 10 | // |
| 11 | // This program is distributed in the hope that it will be useful, |
| 12 | // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | // GNU General Public License for more details. |
| 15 | // |
| 16 | // You should have received a copy of the GNU General Public License |
| 17 | // along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 18 | |
| 19 | #include "devices.hh" |
| 20 | #include "keys.hh" |
| 21 | |
| 22 | Iris::Num start (): |
| 23 | Iris::my_parent.init_done () |
| 24 | Iris::Buzzer buzzer = Iris::my_parent.get_capability <Iris::Buzzer> () |
| 25 | Iris::Keyboard kbd = Iris::my_parent.get_capability <Iris::Keyboard> () |
| 26 | Iris::Cap key = Iris::my_receiver.create_capability (0) |
| 27 | kbd.set_cb (key) |
| 28 | // Frequency of the pulse train in millihertz. |
| 29 | unsigned mHz = 1000 |
| 30 | // Frequency of single pulses in hertz. |
| 31 | unsigned freq = 1000 |
| 32 | bool running (false) |
| 33 | while true: |
| 34 | Iris::wait () |
| 35 | switch Iris::recv.protected_data.l: |
| 36 | case ~0: |
| 37 | if running: |
| 38 | buzzer.beep (freq, 10, ~0) |
| 39 | Iris::my_receiver.set_alarm (HZ * 1000 / mHz) |
| 40 | break |
| 41 | case 0: |
| 42 | if Iris::recv.data[0].l & Iris::Keyboard::RELEASE: |
| 43 | break |
| 44 | switch Iris::recv.data[0].l: |
| 45 | case Key::VOLUME_UP: |
| 46 | freq = freq * 11 / 10 |
| 47 | break |
| 48 | case Key::VOLUME_DOWN: |
| 49 | freq = freq * 9 / 10 |
| 50 | break |
| 51 | case Key::LEFT: |
| 52 | mHz = mHz * 99 / 100 |
| 53 | break |
| 54 | case Key::RIGHT: |
| 55 | mHz = mHz * 101 / 100 |
| 56 | break |
| 57 | case Key::UP: |
| 58 | mHz = mHz * 11 / 10 |
| 59 | break |
| 60 | case Key::DOWN: |
| 61 | mHz = mHz * 9 / 10 |
| 62 | break |
| 63 | case Key::P: |
| 64 | running = !running |
| 65 | if running: |
| 66 | Iris::my_receiver.set_alarm (0) |
| 67 | break |
| 68 | break |
| 69 | default: |
| 70 | kdebug ("metronome: huh?\n") |
| 71 | break |
| 72 |
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