diff options
| -rw-r--r-- | sensors_example/hal-example-app.cpp | 49 |
1 files changed, 28 insertions, 21 deletions
diff --git a/sensors_example/hal-example-app.cpp b/sensors_example/hal-example-app.cpp index 428636e..2a7cf83 100644 --- a/sensors_example/hal-example-app.cpp +++ b/sensors_example/hal-example-app.cpp @@ -39,42 +39,49 @@ int main(int argc, char* argv[]) { sensor_t const* sensor_list = nullptr; - int sensor_count = sensor_module->get_sensors_list(sensor_module, - &sensor_list); - printf("Found %d sensors\n", sensor_count); - - int accelerometer_index = -1; + int sensor_count = sensor_module->get_sensors_list(sensor_module, &sensor_list); + printf("Found %d supported sensors\n", sensor_count); for (int i = 0; i < sensor_count; i++) { - printf("Found %s\n", sensor_list[i].name); - if (sensor_list[i].type == SENSOR_TYPE_ACCELEROMETER) { - accelerometer_index = i; - } + printf("HAL supports sensor %s\n", sensor_list[i].name); } - if (accelerometer_index == -1) { - fprintf(stderr, "No accelerometer found\n"); - return 1; - } - - // sensors_poll_device_1_t is used in HAL versions >= 1.0. - sensors_poll_device_1_t* sensor_device = nullptr; // sensors_open_1 is used in HAL versions >= 1.0. + sensors_poll_device_1_t* sensor_device = nullptr; ret = sensors_open_1(&sensor_module->common, &sensor_device); if (ret || !sensor_device) { - fprintf(stderr, "Failed to open the accelerometer device\n"); + fprintf(stderr, "Failed to open the sensor HAL\n"); return 1; } - ret = sensor_device->activate( + // Find the first accellerometer that can be opened + int accelerometer_index = -1; + for (int i = 0; i < sensor_count; i++) { + if (sensor_list[i].type != SENSOR_TYPE_ACCELEROMETER) + continue; + ret = sensor_device->activate( reinterpret_cast<sensors_poll_device_t*>(sensor_device), - sensor_list[accelerometer_index].handle, 1 /* enabled */); + sensor_list[i].handle, 1 /* enabled */); + if (ret) { + fprintf(stderr, "Unable to activate %s\n", sensor_list[i].name); + continue; + } + + // found an equipped accelerometer. + accelerometer_index = i; + break; + } + if (ret) { - fprintf(stderr, "Failed to enable the accelerometer\n"); - sensors_close_1(sensor_device); + fprintf(stderr, "No accelerometer found\n"); + ret = sensors_close_1(sensor_device); + if (ret) + fprintf(stderr, "Failed to close the accelerometer device\n"); return 1; } + printf("\nSensor %s activated\n", sensor_list[accelerometer_index].name); + const int kNumSamples = 10; const int kNumEvents = 1; const int kWaitTimeSecs = 1; |