Joan Teixidor / Mbed 2 deprecated BLE_LED_Controller

Joan BLE Dimmer

Dependencies:   BLE_API mbed nRF51822

Fork of BLE_LED_Controller by UCL IoT

main.cpp@15:016434184568, 2014-12-18 (annotated)

Committer:
bthomsen
Date:
Thu Dec 18 21:14:19 2014 +0000
Revision:
15:016434184568
Parent:
14:8ff3bfb6b19d 
Initial Commit - Working Version

Who changed what in which revision?

UserRevisionLine numberNew contents of line
yihui 0:e910d9bb040f 1 /* mbed Microcontroller Library
yihui 0:e910d9bb040f 2 * Copyright (c) 2006-2013 ARM Limited
yihui 0:e910d9bb040f 3 *
yihui 0:e910d9bb040f 4 * Licensed under the Apache License, Version 2.0 (the "License");
yihui 0:e910d9bb040f 5 * you may not use this file except in compliance with the License.
yihui 0:e910d9bb040f 6 * You may obtain a copy of the License at
yihui 0:e910d9bb040f 7 *
yihui 0:e910d9bb040f 8 * http://www.apache.org/licenses/LICENSE-2.0
yihui 0:e910d9bb040f 9 *
yihui 0:e910d9bb040f 10 * Unless required by applicable law or agreed to in writing, software
yihui 0:e910d9bb040f 11 * distributed under the License is distributed on an "AS IS" BASIS,
yihui 0:e910d9bb040f 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
yihui 0:e910d9bb040f 13 * See the License for the specific language governing permissions and
yihui 0:e910d9bb040f 14 * limitations under the License.
yihui 0:e910d9bb040f 15 */
yihui 0:e910d9bb040f 16
yihui 0:e910d9bb040f 17 #include "mbed.h"
Rohit Grover 2:e060367b9024 18 #include "BLEDevice.h"
yihui 0:e910d9bb040f 19
rgrover1 6:e0fc9072e853 20 #include "UARTService.h"
yihui 0:e910d9bb040f 21
bthomsen 14:8ff3bfb6b19d 22 #define NEED_CONSOLE_OUTPUT 0 /* Set this if you need debug messages on the console;
Rohit Grover 2:e060367b9024 23 * it will have an impact on code-size and power consumption. */
yihui 0:e910d9bb040f 24
Rohit Grover 2:e060367b9024 25 #if NEED_CONSOLE_OUTPUT
rgrover1 6:e0fc9072e853 26 #define DEBUG(...) { printf(__VA_ARGS__); }
yihui 0:e910d9bb040f 27 #else
Rohit Grover 2:e060367b9024 28 #define DEBUG(...) /* nothing */
Rohit Grover 2:e060367b9024 29 #endif /* #if NEED_CONSOLE_OUTPUT */
yihui 0:e910d9bb040f 30
bthomsen 15:016434184568 31 #define LED2CMD "led2"
bthomsen 15:016434184568 32 #define CMD_LENGTH 4
bthomsen 13:291a8f177400 33
bthomsen 13:291a8f177400 34
bthomsen 13:291a8f177400 35 //char rxPayload[CMD_SIZE];
bthomsen 13:291a8f177400 36
bthomsen 13:291a8f177400 37 BLEDevice ble; // Create Bluetooth object
bthomsen 13:291a8f177400 38 DigitalOut led1(LED1); // Set the pin attached to LED1 as an output
bthomsen 15:016434184568 39 PwmOut led2(LED2); // Set the pin attached to LED2 as an output
yihui 0:e910d9bb040f 40
rgrover1 6:e0fc9072e853 41 UARTService *uartServicePtr;
yihui 0:e910d9bb040f 42
bthomsen 13:291a8f177400 43 /* BLE disconnected callback */
rgrover1 5:4bc41267a03a 44 void disconnectionCallback(Gap::Handle_t handle, Gap::DisconnectionReason_t reason)
yihui 0:e910d9bb040f 45 {
Rohit Grover 2:e060367b9024 46 DEBUG("Disconnected!\n\r");
Rohit Grover 2:e060367b9024 47 DEBUG("Restarting the advertising process\n\r");
Rohit Grover 2:e060367b9024 48 ble.startAdvertising();
Rohit Grover 2:e060367b9024 49 }
bthomsen 13:291a8f177400 50 /* BLE UART data received callback */
rgrover1 6:e0fc9072e853 51 void onDataWritten(const GattCharacteristicWriteCBParams *params)
yihui 0:e910d9bb040f 52 {
bthomsen 13:291a8f177400 53 if ((uartServicePtr != NULL) && (params->charHandle == uartServicePtr->getTXCharacteristicHandle())) { //If characters received over BLE
rgrover1 5:4bc41267a03a 54 uint16_t bytesRead = params->len;
rgrover1 5:4bc41267a03a 55 DEBUG("received %u bytes\n\r", bytesRead);
bthomsen 13:291a8f177400 56 DEBUG("Received string: '");
bthomsen 13:291a8f177400 57 DEBUG((const char *)params->data); //Note the size of data expands to the largest string received. Need to use bytesRead to resize.
bthomsen 13:291a8f177400 58 DEBUG("'\n\r");
bthomsen 15:016434184568 59 if (!strncmp(LED2CMD,(const char *)params->data,CMD_LENGTH-1)){
bthomsen 15:016434184568 60 float value;
bthomsen 15:016434184568 61 char cmd[CMD_LENGTH];
bthomsen 15:016434184568 62 sscanf((const char *)params->data, "%s %f", cmd, &value );
bthomsen 15:016434184568 63 led2 = value;
bthomsen 15:016434184568 64 DEBUG("Cmd: %s LED Level = %f\n\r", cmd, value);
bthomsen 15:016434184568 65 }
bthomsen 15:016434184568 66 ble.updateCharacteristicValue(uartServicePtr->getRXCharacteristicHandle(), params->data,bytesRead); // Echo received characters back over BLE
yihui 0:e910d9bb040f 67 }
Rohit Grover 2:e060367b9024 68 }
yihui 0:e910d9bb040f 69
bthomsen 12:36a9f01cfa0a 70 /* Periodic Ticker callback */
Rohit Grover 2:e060367b9024 71 void periodicCallback(void)
Rohit Grover 2:e060367b9024 72 {
bthomsen 12:36a9f01cfa0a 73 led1 = !led1; // Toggle LED 1
Rohit Grover 2:e060367b9024 74 }
yihui 0:e910d9bb040f 75
yihui 0:e910d9bb040f 76 int main(void)
yihui 0:e910d9bb040f 77 {
Rohit Grover 2:e060367b9024 78 led1 = 1;
bthomsen 15:016434184568 79 led2 = 0.5;
bthomsen 12:36a9f01cfa0a 80 Ticker ticker; // Create period timer
bthomsen 12:36a9f01cfa0a 81 ticker.attach(periodicCallback, 1); // Attach ticker callback function with a period of 1 second
yihui 0:e910d9bb040f 82
Rohit Grover 2:e060367b9024 83 DEBUG("Initialising the nRF51822\n\r");
Rohit Grover 2:e060367b9024 84 ble.init();
bthomsen 13:291a8f177400 85 ble.onDisconnection(disconnectionCallback); // Define callback function for BLE disconnection event
bthomsen 13:291a8f177400 86 ble.onDataWritten(onDataWritten); // Define callback function for BLE Data received event
yihui 0:e910d9bb040f 87
Rohit Grover 2:e060367b9024 88 /* setup advertising */
bthomsen 13:291a8f177400 89 ble.accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED); // Indicate that Legacy Bluetooth in not supported
Rohit Grover 2:e060367b9024 90 ble.setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
Rohit Grover 2:e060367b9024 91 ble.accumulateAdvertisingPayload(GapAdvertisingData::SHORTENED_LOCAL_NAME,
rgrover1 6:e0fc9072e853 92 (const uint8_t *)"BLE UART", sizeof("BLE UART") - 1);
Rohit Grover 2:e060367b9024 93 ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_128BIT_SERVICE_IDS,
rgrover1 6:e0fc9072e853 94 (const uint8_t *)UARTServiceUUID_reversed, sizeof(UARTServiceUUID_reversed));
yihui 0:e910d9bb040f 95
bthomsen 13:291a8f177400 96 ble.setAdvertisingInterval(Gap::MSEC_TO_ADVERTISEMENT_DURATION_UNITS(1000)); // Set advertising interval to 1 second
bthomsen 13:291a8f177400 97 ble.startAdvertising(); // Start advertising
yihui 0:e910d9bb040f 98
bthomsen 13:291a8f177400 99 UARTService uartService(ble); // Create BLE UART service
bthomsen 13:291a8f177400 100 uartServicePtr = &uartService; // Initalise pointer to point to UART Service
yihui 0:e910d9bb040f 101
Rohit Grover 2:e060367b9024 102 while (true) {
bthomsen 13:291a8f177400 103 ble.waitForEvent(); // Wait for BLE events
yihui 0:e910d9bb040f 104 }
yihui 0:e910d9bb040f 105 }