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This is a demo for controlling your ShieldBot using your mobile phone
Dependencies: BLE_API ShieldBot_v12 mbed nRF51822
Fork of BLE_LoopbackUART by
Diff: main.cpp
- Revision:
- 0:e910d9bb040f
- Child:
- 2:e060367b9024
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main.cpp Mon May 26 06:58:45 2014 +0000 @@ -0,0 +1,157 @@ +/* mbed Microcontroller Library + * Copyright (c) 2006-2013 ARM Limited + * + * 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 "mbed.h" +#include "nRF51822n.h" + +#define BLE_UUID_NUS_SERVICE 0x0001 /**< The UUID of the Nordic UART Service. */ +#define BLE_UUID_NUS_TX_CHARACTERISTIC 0x0002 /**< The UUID of the TX Characteristic. */ +#define BLE_UUID_NUS_RX_CHARACTERISTIC 0x0003 /**< The UUID of the RX Characteristic. */ + +#ifdef DEBUG +#define LOG(args...) pc.printf(args) + +Serial pc(USBTX, USBRX); +#else +#define LOG(args...) +#endif + +nRF51822n nrf; /* BLE radio driver */ + +DigitalOut led1(p1); +DigitalOut advertisingStateLed(p30); + +// The Nordic UART Service +uint8_t uart_base_uuid[] = {0x6e, 0x40, 0x01, 0x00, 0xb5, 0xa3, 0xf3, 0x93, 0xe0, 0xa9, 0xe5,0x0e, 0x24, 0xdc, 0xca, 0x9e}; +uint8_t txPayload[8] = {0,}; +uint8_t rxPayload[8] = {0,}; +GattService uartService (uart_base_uuid); +GattCharacteristic txCharacteristic (BLE_UUID_NUS_TX_CHARACTERISTIC, 1, 8, + GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_WRITE | GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_WRITE_WITHOUT_RESPONSE); +GattCharacteristic rxCharacteristic (BLE_UUID_NUS_RX_CHARACTERISTIC, 1, 8, + GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY); + +/* Advertising data and parameters */ +GapAdvertisingData advData; +GapAdvertisingData scanResponse; +GapAdvertisingParams advParams ( GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED ); + +uint16_t uuid16_list[] = {BLE_UUID_NUS_SERVICE}; + +/**************************************************************************/ +/*! + @brief This custom class can be used to override any GapEvents + that you are interested in handling on an application level. +*/ +/**************************************************************************/ +class GapEventHandler : public GapEvents +{ + //virtual void onTimeout(void) {} + + virtual void onConnected(void) { + advertisingStateLed = 0; + LOG("Connected!\n\r"); + } + + /* When a client device disconnects we need to start advertising again. */ + virtual void onDisconnected(void) { + nrf.getGap().startAdvertising(advParams); + advertisingStateLed = 1; + LOG("Disconnected!\n\r"); + LOG("Restarting the advertising process\n\r"); + } +}; + +/**************************************************************************/ +/*! + @brief This custom class can be used to override any GattServerEvents + that you are interested in handling on an application level. +*/ +/**************************************************************************/ +class GattServerEventHandler : public GattServerEvents +{ + virtual void onDataSent(uint16_t charHandle) { + if (charHandle == txCharacteristic.handle) { + LOG("onDataSend()\n\r"); + + } + } + + virtual void onDataWritten(uint16_t charHandle) { + if (charHandle == txCharacteristic.handle) { + LOG("onDataWritten()\n\r"); + nrf.getGattServer().readValue(txCharacteristic.handle, txPayload, 8); // Current APIs don't provide the length of the payload + LOG("ECHO: %s\n\r", (char *)txPayload); + nrf.getGattServer().updateValue(rxCharacteristic.handle, txPayload, 8); + } + } + + virtual void onUpdatesEnabled(uint16_t charHandle) { + LOG("onUpdateEnabled\n\r"); + } + + virtual void onUpdatesDisabled(uint16_t charHandle) { + LOG("onUpdatesDisabled\n\r"); + } + + //virtual void onConfirmationReceived(uint16_t charHandle) {} +}; + +/**************************************************************************/ +/*! + @brief Program entry point +*/ +/**************************************************************************/ +int main(void) +{ + + /* Setup an event handler for GAP events i.e. Client/Server connection events. */ + nrf.getGap().setEventHandler(new GapEventHandler()); + nrf.getGattServer().setEventHandler(new GattServerEventHandler()); + + /* Initialise the nRF51822 */ + nrf.init(); + + /* Make sure we get a clean start */ + nrf.reset(); + + /* Add BLE-Only flag and complete service list to the advertising data */ + advData.addFlags(GapAdvertisingData::BREDR_NOT_SUPPORTED); + advData.addData(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, + (uint8_t*)uuid16_list, sizeof(uuid16_list)); + + advData.addData(GapAdvertisingData::SHORTENED_LOCAL_NAME, + (uint8_t*)"BLE UART", sizeof("BLE UART") - 1); + + advData.addAppearance(GapAdvertisingData::UNKNOWN); + nrf.getGap().setAdvertisingData(advData, scanResponse); + + /* UART Service */ + uartService.addCharacteristic(rxCharacteristic); + uartService.addCharacteristic(txCharacteristic); + nrf.getGattServer().addService(uartService); + + /* Start advertising (make sure you've added all your data first) */ + nrf.getGap().startAdvertising(advParams); + + advertisingStateLed = 1; + + /* Do blinky on LED1 while we're waiting for BLE events */ + for (;;) { + led1 = !led1; + wait(1); + } +}