| /* |
| * Copyright (C) 2015 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include <err.h> |
| #include <stdio.h> |
| #include <unistd.h> |
| |
| #include <hardware/hardware.h> |
| #include <hardware/lights.h> |
| |
| int main() { |
| const hw_module_t* module = nullptr; |
| struct light_device_t* light_device = nullptr; |
| |
| int ret = hw_get_module(LIGHTS_HARDWARE_MODULE_ID, &module); |
| if (ret || !module) { |
| err(1, "Failed to load %s module", LIGHTS_HARDWARE_MODULE_ID); |
| } |
| |
| ret = module->methods->open( |
| module, LIGHT_ID_NOTIFICATIONS, |
| reinterpret_cast<struct hw_device_t**>(&light_device)); |
| if (ret || !light_device) { |
| err(1, "Failed to open light device for %s", LIGHT_ID_NOTIFICATIONS); |
| } |
| |
| struct light_state_t state = { |
| .color = 0, |
| .flashMode = LIGHT_FLASH_NONE, |
| .flashOnMS = 0, |
| .flashOffMS = 0, |
| .brightnessMode = 0, |
| }; |
| |
| // Turn light on for three seconds. |
| state.color = 1; |
| light_device->set_light(light_device, &state); |
| sleep(3); |
| |
| // Flash for three seconds. |
| state.flashMode = LIGHT_FLASH_TIMED; |
| state.flashOnMS = 50; |
| state.flashOffMS = 50; |
| light_device->set_light(light_device, &state); |
| sleep(3); |
| |
| // Turn light off. |
| state.color = 0; |
| state.flashMode = LIGHT_FLASH_NONE; |
| light_device->set_light(light_device, &state); |
| |
| light_device->common.close( |
| reinterpret_cast<struct hw_device_t*>(light_device)); |
| |
| return 0; |
| } |