![](/media/cache/profiles/909f269e0b3ffbd61d906f9b25eecaf6.jpg.50x50_q85.jpg)
a hack to use buttons to fake a cube puck
Dependencies: MPU6050 Puck mbed
Fork of cube-puck by
main.cpp
- Committer:
- sigveseb
- Date:
- 2014-08-08
- Revision:
- 8:4244572015c6
- Parent:
- 7:4f2aaa06ff44
- Child:
- 10:3d708495b7a0
File content as of revision 8:4244572015c6:
/** * Copyright 2014 Nordic Semiconductor * * 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 "MPU6050.h" #include <math.h> #include "Puck.h" Puck* puck = &Puck::getPuck(); const UUID CUBE_SERVICE_UUID = UUID(stringToUUID("bftj cube ")); const UUID DIRECTION_UUID = UUID(stringToUUID("bftj cube dirctn")); enum Direction { UP, DOWN, LEFT, RIGHT, FRONT, BACK, UNDEFINED }; const static int16_t ACCELERATION_EXITATION_THRESHOLD = 15000; MPU6050 mpu; int16_t ax, ay, az; int16_t gx, gy, gz; Direction direction = UNDEFINED; void log_direction(Direction direction) { switch(direction) { case UP: LOG_INFO("Direction UP\n"); break; case DOWN: LOG_INFO("Direction DOWN\n"); break; case LEFT: LOG_INFO("Direction LEFT\n"); break; case RIGHT: LOG_INFO("Direction RIGHT\n"); break; case BACK: LOG_INFO("Direction BACK\n"); break; case FRONT: LOG_INFO("Direction FRONT\n"); break; default: LOG_INFO("Direction UNSET\n"); break; } } int16_t direction_if_exited(int16_t acceleration) { if (acceleration > ACCELERATION_EXITATION_THRESHOLD) { return 1; } if (acceleration < -ACCELERATION_EXITATION_THRESHOLD) { return -1; } return 0; } void updateCubeDirection(void) { if(!mpu.testConnection()) { LOG_ERROR("MPU DIED! Resetting...\n"); mpu.reset(); mpu.initialize(); LOG_ERROR("Reset complete.\n"); return; } mpu.getMotion6(&ax, &ay, &az, &gx, &gy, &gz); int16_t x = direction_if_exited(ax); int16_t y = direction_if_exited(ay); int16_t z = direction_if_exited(az); int16_t sum = abs(x) + abs(y) + abs(z); if (sum != 1) { return; } Direction new_direction = UNDEFINED; if (z == 1) { new_direction = UP; } else if (z == -1) { new_direction = DOWN; } else if (y == 1) { new_direction = LEFT; } else if (y == -1) { new_direction = RIGHT; } else if (x == 1) { new_direction = BACK; } else if (x == -1) { new_direction = FRONT; } if (direction == new_direction) { return; } direction = new_direction; log_direction(direction); uint8_t directionAsInteger = direction; int length = 1; puck->updateCharacteristicValue(DIRECTION_UUID, &directionAsInteger, length); } int main() { LOG_VERBOSE("MPU6050 test startup:\n"); mpu.initialize(); LOG_VERBOSE("TestConnection\n"); if (mpu.testConnection()) { LOG_INFO("MPU initialized.\n"); } else { LOG_ERROR("MPU not properly initialized!\n"); } int characteristicValueLength = 1; puck->addCharacteristic( CUBE_SERVICE_UUID, DIRECTION_UUID, characteristicValueLength, GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ | GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY); puck->init(0xC1BE); Ticker ticker; ticker.attach(updateCubeDirection, 0.2); LOG_INFO("Started listening to orientation changes.\n"); while(puck->drive()); }