Paul Russell / Mbed 2 deprecated bleIOv04_pr

Experimental BLE project showing how IO can be made with an App over BLE. Pointer to matching App will be added when ready, initially this works with: - Android App [nRF-Master Control Panel], supports Write,Read,Notify - Android Project [BluetoothLeGatt]

Dependencies:   BLE_API mbed nRF51822

This is an experimental project for BLE (Bluetooth LE == Bluetooth Low Energy == Bluetooth Smart).

  • It supports general IO over BLE with Read/Notify/Write support.
  • It is compatible with FOTA using Android App "nRF Master Control Panel" (20150126)
  • IO supported by:
    • Custom Android App is in the WIKI under: Android-App, developed from Android Sample "BluetoothLeGatt"
    • Android App: nRF-MCP (Master Control Panel)
    • iOS App LightBlue.
    • General HRM, HTM, Battery and similar apps should be able to access the matching services.
  • It includes combinations of code from other projects, alternative code included can be tried by moving comments (, //)
  • 20150126 bleIO r25: It compiles for both "Nordic nRF51822" and "Nordic nRF51822 FOTA" platforms
  • 20150126 The matching bleIO App (in wiki) doesn't support FOTA yet, use Android App "nRF Master Control Panel"

Feedback and ideas greatly appreciated!!!

main.cpp@0:0217a862b047, 2014-12-10 (annotated)

Committer:
prussell
Date:
Wed Dec 10 16:54:58 2014 +0000
Revision:
0:0217a862b047
Child:
1:4a25d917fb6a
Initial, Imported from PR's bleHRMv02

Who changed what in which revision?

UserRevisionLine numberNew contents of line
prussell 0:0217a862b047 1 //=========Header (PR)
prussell 0:0217a862b047 2 // blePRv04, Initial: 20141210 Paul Russell (mbed user: prussell = PR)
prussell 0:0217a862b047 3 // This sample includes code from several projects found on http://developer.mbed.org, including but not limited to:
prussell 0:0217a862b047 4 // - http://developer.mbed.org/teams/Bluetooth-Low-Energy/code/BLE_HeartRate/
prussell 0:0217a862b047 5 // - https://developer.mbed.org/teams/Bluetooth-Low-Energy/code/BLE_LoopbackUART/
prussell 0:0217a862b047 6 // - miscellaneous adopted from more samples...
prussell 0:0217a862b047 7 // Reference:
prussell 0:0217a862b047 8 // - http://developer.mbed.org/teams/Bluetooth-Low-Energy/code/BLE_API/
prussell 0:0217a862b047 9 // - Reference: http://developer.mbed.org/teams/Bluetooth-Low-Energy/code/BLE_API/docs/tip/
prussell 0:0217a862b047 10 // - Reference: http://developer.mbed.org/teams/Bluetooth-Low-Energy/
prussell 0:0217a862b047 11 // Warnings:
prussell 0:0217a862b047 12 // - As of 20141210 it is necessary to use Android App [nRF-Master Control Panel] to ensure any previous connected
prussell 0:0217a862b047 13 // code on mkit is properly Disconnected before trying to connect other Android nRF Apps (nRFToolbox, nRF UART 2.0, etc.).
prussell 0:0217a862b047 14 // As UART device doesn't offer disconnect you may need to load a 3rf sample, then connect, then discoonect, to clear the link.
prussell 0:0217a862b047 15 // Notes:
prussell 0:0217a862b047 16 // - onDataSent() maybe only occuring when confirmed receive by phone, as onDataSent() didn't happen when phone moved out of range.
prussell 0:0217a862b047 17 // - onDisconnect(Reason:8) occured after ~20Tx with no onDataSent() after phone moved out of range, OnTimeout didn't occur at all.
prussell 0:0217a862b047 18 // ToDo: and ToCheck:
prussell 0:0217a862b047 19 // - Re-check where voltatile needed
prussell 0:0217a862b047 20 //==========End of PR's Header
prussell 0:0217a862b047 21
prussell 0:0217a862b047 22 //==========Historic Licencing from original imported sample from mbed website [BLE_HeartRate] ==========
prussell 0:0217a862b047 23 //From: http://developer.mbed.org/teams/Bluetooth-Low-Energy/code/BLE_HeartRate/
prussell 0:0217a862b047 24 /* mbed Microcontroller Library
prussell 0:0217a862b047 25 * Copyright (c) 2006-2013 ARM Limited
prussell 0:0217a862b047 26 *
prussell 0:0217a862b047 27 * Licensed under the Apache License, Version 2.0 (the "License");
prussell 0:0217a862b047 28 * you may not use this file except in compliance with the License.
prussell 0:0217a862b047 29 * You may obtain a copy of the License at
prussell 0:0217a862b047 30 * http://www.apache.org/licenses/LICENSE-2.0
prussell 0:0217a862b047 31 * Unless required by applicable law or agreed to in writing, software
prussell 0:0217a862b047 32 * distributed under the License is distributed on an "AS IS" BASIS,
prussell 0:0217a862b047 33 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
prussell 0:0217a862b047 34 * See the License for the specific language governing permissions and
prussell 0:0217a862b047 35 * limitations under the License. */
prussell 0:0217a862b047 36 //==========end of Historic Licencing ==========
prussell 0:0217a862b047 37
prussell 0:0217a862b047 38
prussell 0:0217a862b047 39 //==========Compile Options==========
prussell 0:0217a862b047 40 #define ENABLE_SerialUSB_DEBUG_CONSOLE 1 //PR: Enable Debug on mbed's USB Serial Debug, Setup: Serial 9600,8,N,1,NoFlowControl (TeraTerm: http://en.sourceforge.jp/projects/ttssh2/releases/)
prussell 0:0217a862b047 41 #define UPDATE_PARAMS_FOR_LONGER_CONNECTION_INTERVAL 0 //PR: Option to slow the connection intervsal possibly saving power (After Connected)
prussell 0:0217a862b047 42
prussell 0:0217a862b047 43 //==========Includes==========
prussell 0:0217a862b047 44 #include "mbed.h"
prussell 0:0217a862b047 45 #include "BLEDevice.h"
prussell 0:0217a862b047 46
prussell 0:0217a862b047 47 //Services
prussell 0:0217a862b047 48 #include "BatteryService.h"
prussell 0:0217a862b047 49 #include "DeviceInformationService.h"
prussell 0:0217a862b047 50 //#include "DFUService" //TODO: DFU and FOTA Support
prussell 0:0217a862b047 51 //#include "HealthThermometerService.h" //TODO: Temperature, #include "ble_hts.h"
prussell 0:0217a862b047 52 #include "HeartRateService.h"
prussell 0:0217a862b047 53 //#include "UARTService.h" //TODO: Add a UART Channel for streaming data like logs?
prussell 0:0217a862b047 54
prussell 0:0217a862b047 55 //==========Debug Console==========
prussell 0:0217a862b047 56 #if ENABLE_SerialUSB_DEBUG_CONSOLE
prussell 0:0217a862b047 57 Serial debug_serial(USBTX, USBRX); //PR: DebugSerialOverMbedUSB 9600-8N1N
prussell 0:0217a862b047 58 #define DEBUG(...) { debug_serial.printf(__VA_ARGS__); }
prussell 0:0217a862b047 59 #else
prussell 0:0217a862b047 60 #define DEBUG(...) //Do Nothing
prussell 0:0217a862b047 61 #endif
prussell 0:0217a862b047 62
prussell 0:0217a862b047 63 //==========LEDs==========
prussell 0:0217a862b047 64 //LEDs:
prussell 0:0217a862b047 65 //DigitalOut out_led1(LED1); //PR: Firmware heartbeat
prussell 0:0217a862b047 66 //DigitalOut out_led2(LED2); //PR: Firmware heartbeat
prussell 0:0217a862b047 67 PwmOut pwm_led1(LED1); //PR: Firmware Life Indicator
prussell 0:0217a862b047 68 PwmOut pwm_led2(LED2); //TODO: Controlled by App
prussell 0:0217a862b047 69 float f_led1level = 0.0; //Initial Brightness (Typically 0.0~0.5)
prussell 0:0217a862b047 70 float f_led2level = 0.0; //Initial Brightness (Typically 0.0~0.5)
prussell 0:0217a862b047 71
prussell 0:0217a862b047 72 //==========BLE==========
prussell 0:0217a862b047 73 BLEDevice ble;
prussell 0:0217a862b047 74 const static char pcDeviceName[] = "blePRv04"; //PR: Why can App nRF-MCP modify this even though flagged as Const, maybe only temporary mod till App restarts?
prussell 0:0217a862b047 75 static const uint16_t uuid16_list[] = { //Service List (Pre-defined standard 16bit services)
prussell 0:0217a862b047 76 //BLE_UUID_GAP UUID_GENERIC_ACCESS //0x1800 //Included by Default, DeviceName, Appearance, PreferredConnectionParam
prussell 0:0217a862b047 77 //BLE_UUID_GATT UUID_GENERIC ATTRIBUTE //0x1801 //Included by Default, ServiceChanged,
prussell 0:0217a862b047 78 GattService::UUID_HEART_RATE_SERVICE, //0x180D //HRM, BosyLocation,ControlPoint
prussell 0:0217a862b047 79 GattService::UUID_BATTERY_SERVICE, //0x180F //BatteryLevel
prussell 0:0217a862b047 80 GattService::UUID_DEVICE_INFORMATION_SERVICE}; //0x180A //sManufacturer, sModelNumber, sSerialNumber, sHWver, sFWver, sSWver
prussell 0:0217a862b047 81
prussell 0:0217a862b047 82 //==========Functions:Timer==========
prussell 0:0217a862b047 83 static volatile bool b_Ticker1 = false;//Volatile, don't optimize, changes under interrupt control
prussell 0:0217a862b047 84 void CallbackTicker1(void)
prussell 0:0217a862b047 85 {
prussell 0:0217a862b047 86 static uint32_t u32_Counter; // Counter for Debug Output
prussell 0:0217a862b047 87
prussell 0:0217a862b047 88 //pwm_led1 = !pwm_led1; /* Do blinky on LED1 while we're waiting for BLE events */
prussell 0:0217a862b047 89 f_led1level+=0.1; if (f_led1level>0.5){f_led1level = 0.1;}; pwm_led1=f_led1level;//PR: Ramp Blink
prussell 0:0217a862b047 90 DEBUG("\nBLEi: Ticker1(%u) ", ++u32_Counter);
prussell 0:0217a862b047 91 b_Ticker1 = true; //PR: Flag to handle Ticker1 Event in Main loop so interupts not blocked.
prussell 0:0217a862b047 92 }
prussell 0:0217a862b047 93
prussell 0:0217a862b047 94 //==========Functions:BLE==========
prussell 0:0217a862b047 95 void Callback_BLE_onTimeout(void)
prussell 0:0217a862b047 96 {
prussell 0:0217a862b047 97 DEBUG("\nBLEi: Callback_BLE_onTimeout()\n" );
prussell 0:0217a862b047 98 //PR: Haven't seen this, even when phone moved out of range and OnDisconnect(Reason0x08) occurs
prussell 0:0217a862b047 99
prussell 0:0217a862b047 100 //DEBUG("\nBLE:Callback_BLE_onTimeout(), Restarting Advertising\n" );
prussell 0:0217a862b047 101 //ble.startAdvertising();
prussell 0:0217a862b047 102 }
prussell 0:0217a862b047 103
prussell 0:0217a862b047 104 //void onDisconnection (Gap::DisconnectionEventCallback_t disconnectionCallback)
prussell 0:0217a862b047 105 void Callback_BLE_onDisconnect(Gap::Handle_t tHandle, Gap::DisconnectionReason_t eReason)
prussell 0:0217a862b047 106 {
prussell 0:0217a862b047 107 //PR: onDisconnect(Reason:8) occured after ~20Tx with no onDataSent() after phone moved out of range
prussell 0:0217a862b047 108
prussell 0:0217a862b047 109 // REMOTE_USER_TERMINATED_CONNECTION = 0x13 = 19,
prussell 0:0217a862b047 110 // LOCAL_HOST_TERMINATED_CONNECTION = 0x16 = 22,
prussell 0:0217a862b047 111 // CONN_INTERVAL_UNACCEPTABLE = 0x3B = 59,
prussell 0:0217a862b047 112 DEBUG("\nBLEi: Callback_BLE_Disconnect(Handle:%d, eReason:0x%02x), Restarting Advertising\n",tHandle,eReason );//PR: Occurs properly when click disconnect in App nRFToolbox:HRM
prussell 0:0217a862b047 113
prussell 0:0217a862b047 114 //DEBUG("Wait10sec...\n");wait(10.0); //PR: Optional to test effect on advertising
prussell 0:0217a862b047 115 ble.startAdvertising(); // restart advertising
prussell 0:0217a862b047 116 }
prussell 0:0217a862b047 117
prussell 0:0217a862b047 118 //inline void BLEDevice::onConnection(Gap::ConnectionEventCallback_t connectionCallback){ transport->getGap().setOnConnection(connectionCallback);}
prussell 0:0217a862b047 119 void Callback_BLE_onConnect(Gap::Handle_t tHandle, Gap::addr_type_t ePeerAddrType, const Gap::address_t c6PeerAddr, const Gap::ConnectionParams_t *params)
prussell 0:0217a862b047 120 {
prussell 0:0217a862b047 121 DEBUG("\nBLEi: Callback_BLE_Connect(Handle:%d, eType:%d, Add:%u ...)\n", tHandle, ePeerAddrType, c6PeerAddr);
prussell 0:0217a862b047 122
prussell 0:0217a862b047 123 #if UPDATE_PARAMS_FOR_LONGER_CONNECTION_INTERVAL
prussell 0:0217a862b047 124 /* Updating connection parameters can be attempted only after a connection has been
prussell 0:0217a862b047 125 * established. Please note that the ble-Central is still the final arbiter for
prussell 0:0217a862b047 126 * the effective parameters; the peripheral can only hope that the request is
prussell 0:0217a862b047 127 * honored. Please also be mindful of the constraints that might be enforced by
prussell 0:0217a862b047 128 * the BLE stack on the underlying controller.*/
prussell 0:0217a862b047 129 #define MIN_CONN_INTERVAL 250 /**< Minimum connection interval (250 ms) */
prussell 0:0217a862b047 130 #define MAX_CONN_INTERVAL 350 /**< Maximum connection interval (350 ms). */
prussell 0:0217a862b047 131 #define CONN_SUP_TIMEOUT 6000 /**< Connection supervisory timeout (6 seconds). */
prussell 0:0217a862b047 132 #define SLAVE_LATENCY 4
prussell 0:0217a862b047 133
prussell 0:0217a862b047 134 Gap::ConnectionParams_t tGap_conn_params;
prussell 0:0217a862b047 135 tGap_conn_params.minConnectionInterval = Gap::MSEC_TO_GAP_DURATION_UNITS(MIN_CONN_INTERVAL);
prussell 0:0217a862b047 136 tGap_conn_params.maxConnectionInterval = Gap::MSEC_TO_GAP_DURATION_UNITS(MAX_CONN_INTERVAL);
prussell 0:0217a862b047 137 tGap_conn_params.connectionSupervisionTimeout = Gap::MSEC_TO_GAP_DURATION_UNITS(CONN_SUP_TIMEOUT);
prussell 0:0217a862b047 138 tGap_conn_params.slaveLatency = SLAVE_LATENCY;
prussell 0:0217a862b047 139 ble.updateConnectionParams(tHandle, &tGap_conn_params);
prussell 0:0217a862b047 140 #endif /* #if UPDATE_PARAMS_FOR_LONGER_CONNECTION_INTERVAL */
prussell 0:0217a862b047 141 }
prussell 0:0217a862b047 142
prussell 0:0217a862b047 143 static volatile bool bSent = false; //Volatile, don't optimize, changes under interrupt control
prussell 0:0217a862b047 144 static volatile unsigned uSentBLE;
prussell 0:0217a862b047 145 void Callback_BLE_onDataSent(unsigned uSent){
prussell 0:0217a862b047 146 uSentBLE=uSent;
prussell 0:0217a862b047 147 DEBUG("BLEi: SentI %ubytes", uSent); //TODO: PR: Why uSent always "1", expected it to match sent bytes length
prussell 0:0217a862b047 148 bSent = true;
prussell 0:0217a862b047 149 //PR: onDataSent() maybe only occuring when confirmed receive by phone, as onDataSent() didn't happen when phone moved out of range.
prussell 0:0217a862b047 150 }
prussell 0:0217a862b047 151
prussell 0:0217a862b047 152 void Callback_BLE_onDataWritten(const GattCharacteristicWriteCBParams *pParams)
prussell 0:0217a862b047 153 {
prussell 0:0217a862b047 154 // Callback_BLE_onDataWritten == This does occur when use nRF-MCP to save New Heart Rate Control Point (Ignored if incorrect length)
prussell 0:0217a862b047 155
prussell 0:0217a862b047 156 //Warning: *data may not be NULL terminated
prussell 0:0217a862b047 157 DEBUG("\nBLEi: Callback_BLE_onDataWritten(Handle:%d, eOp:%d, uOffset:%u uLen:%u Data0[0x%02x]=Data[%*s]\n", pParams->charHandle, pParams->op, pParams->offset, pParams->len, (char)(pParams->data[0]), pParams->len, pParams->data);
prussell 0:0217a862b047 158 }
prussell 0:0217a862b047 159
prussell 0:0217a862b047 160 void Callback_BLE_onUpdatesEnabled(Gap::Handle_t tHandle)
prussell 0:0217a862b047 161 {
prussell 0:0217a862b047 162 DEBUG("\nBLEi: Callback_BLE_onUpdates(Handle:%d)\r\n", tHandle);
prussell 0:0217a862b047 163 }
prussell 0:0217a862b047 164
prussell 0:0217a862b047 165 //==========main==========
prussell 0:0217a862b047 166 int main(void)
prussell 0:0217a862b047 167 {
prussell 0:0217a862b047 168 f_led1level = 1; pwm_led1 = f_led1level;//Start LED1=OnMax
prussell 0:0217a862b047 169 f_led2level = 1; pwm_led2 = f_led2level;//Start LED2=OnMax
prussell 0:0217a862b047 170 DEBUG("\nBLE:___%s___\nConnect App for Data: nRF-MCP, nRF-Toolbox:HRM, etc.\n", pcDeviceName); //Restart TeraTerm just before Pressing Reset on mbed
prussell 0:0217a862b047 171
prussell 0:0217a862b047 172 Ticker ticker1; //PR: Timer Object(Structure)
prussell 0:0217a862b047 173 //ticker1.attach(CallbackTicker1, 1.0); //PR: Timer Handler, Float=PeriodSeconds
prussell 0:0217a862b047 174 ticker1.attach(CallbackTicker1, 2.0); //PR: Timer Handler, Float=PeriodSeconds
prussell 0:0217a862b047 175 //ticker1.attach(CallbackTicker1, 5.0); //PR: Timer Handler, Float=PeriodSeconds
prussell 0:0217a862b047 176
prussell 0:0217a862b047 177 //Initialize BLE Service (and event actions)
prussell 0:0217a862b047 178 ble.init();
prussell 0:0217a862b047 179 ble.onDisconnection(Callback_BLE_onDisconnect);
prussell 0:0217a862b047 180 ble.onConnection(Callback_BLE_onConnect); //PR: Not required if no actions enabled, enabled now just for debug printf()
prussell 0:0217a862b047 181 ble.onDataSent(Callback_BLE_onDataSent);
prussell 0:0217a862b047 182 ble.onDataWritten(Callback_BLE_onDataWritten);
prussell 0:0217a862b047 183 ble.onTimeout(Callback_BLE_onTimeout);
prussell 0:0217a862b047 184 ble.onUpdatesEnabled(Callback_BLE_onUpdatesEnabled);
prussell 0:0217a862b047 185
prussell 0:0217a862b047 186 //ble_error_t readCharacteristicValue ( uint16_t handle, uint8_t *const buffer, uint16_t *const lengthP )
prussell 0:0217a862b047 187 //ble_error_t updateCharacteristicValue (uint16_t handle, const uint8_t *value, uint16_t size, bool localOnly=false)
prussell 0:0217a862b047 188
prussell 0:0217a862b047 189 /* Setup primary service. */
prussell 0:0217a862b047 190 uint8_t u8LoopCounter = 100;
prussell 0:0217a862b047 191 HeartRateService hrService(ble, u8LoopCounter, HeartRateService::LOCATION_FINGER); //Start the service for BLE:HRM
prussell 0:0217a862b047 192
prussell 0:0217a862b047 193 /* Setup auxiliary services. */
prussell 0:0217a862b047 194 BatteryService battery(ble); //Start the service for BLE:Battery
prussell 0:0217a862b047 195 DeviceInformationService deviceInfo(ble, "Maker", pcDeviceName, "sn1234", "hw00", "fw00", "sw00");//Start the service for BLE:DeviceInfo
prussell 0:0217a862b047 196 // (BLEDevice), pcManufacturer, pcModelNumber, pcSerialNumber, pcHWver, pcFWver, pcSWver
prussell 0:0217a862b047 197
prussell 0:0217a862b047 198 /* Setup advertising. */
prussell 0:0217a862b047 199 ble.setAdvertisingInterval(Gap::MSEC_TO_ADVERTISEMENT_DURATION_UNITS(1000)); //PR: Advertise 1sec (1Hz)
prussell 0:0217a862b047 200 ble.setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED); //PR: TODO
prussell 0:0217a862b047 201 ble.accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE); //PR: BLE Only, Options(LE_GENERAL_DISCOVERABLE/LE_LIMITED_DISCOVERABLE)
prussell 0:0217a862b047 202 ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *)uuid16_list, sizeof(uuid16_list)); //PR: Might need to change for Custom Services/Characteristics
prussell 0:0217a862b047 203 ble.accumulateAdvertisingPayload(GapAdvertisingData::GENERIC_HEART_RATE_SENSOR);//PR: TODO: Change to: UNKNOWN or custom
prussell 0:0217a862b047 204 ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)pcDeviceName, sizeof(pcDeviceName));//PR: Product?
prussell 0:0217a862b047 205 ble.startAdvertising();
prussell 0:0217a862b047 206
prussell 0:0217a862b047 207 DEBUG("BLE: Main Loop\n");
prussell 0:0217a862b047 208
prussell 0:0217a862b047 209 uint32_t u32_wakeevents=0, u32_wakelast=0; // Counter&Register for tracking Wake Events (to see monitor their Frequency)
prussell 0:0217a862b047 210 while (true) {
prussell 0:0217a862b047 211 if (b_Ticker1 && ble.getGapState().connected) { //If Ticker1 and Connected Update Data
prussell 0:0217a862b047 212 b_Ticker1 = false; // Clear flag for next Ticker1, see CallbackTicker1()
prussell 0:0217a862b047 213
prussell 0:0217a862b047 214 /* Handle sensor polling == Simulate Data */
prussell 0:0217a862b047 215 u8LoopCounter++;
prussell 0:0217a862b047 216 if (u8LoopCounter >= 175) {
prussell 0:0217a862b047 217 u8LoopCounter = 100;
prussell 0:0217a862b047 218 DEBUG("BLE: HRM Rollover175->100 ", u8LoopCounter);
prussell 0:0217a862b047 219 }
prussell 0:0217a862b047 220 DEBUG("BLE: HRM:%u, Wakes:%u Delta:%d ", u8LoopCounter, u32_wakeevents, u32_wakeevents-u32_wakelast); u32_wakelast=u32_wakeevents;
prussell 0:0217a862b047 221 hrService.updateHeartRate(u8LoopCounter);
prussell 0:0217a862b047 222 } else if (b_Ticker1) {
prussell 0:0217a862b047 223 b_Ticker1 = false; // Clear flag for next Ticker1, see CallbackTicker1()
prussell 0:0217a862b047 224 DEBUG("BLE: Tick while unconnected ", u8LoopCounter);
prussell 0:0217a862b047 225 } else if (bSent){
prussell 0:0217a862b047 226 bSent=false; //clear flag
prussell 0:0217a862b047 227 //DEBUG("BLE:Sent %ubytes ", uSentBLE);
prussell 0:0217a862b047 228 } else {
prussell 0:0217a862b047 229 //DEBUG("BLE:Wait for Event\n\r"); //x Debug output here causes unnecessary wakes resulting in endless awakes.
prussell 0:0217a862b047 230 ble.waitForEvent(); //PR: Wait for event - Yield control to BLE Stack and other events (Process ALL pending events before waiting again)
prussell 0:0217a862b047 231 f_led2level+=0.25; if (f_led2level>0.5){f_led2level = 0.0;}; pwm_led2=f_led2level;//PR: Ramp Blink
prussell 0:0217a862b047 232 u32_wakeevents++; //PR: Count events for frequency monitoring (20141207PR: nRF51822 mbed HRM = 50Hz)
prussell 0:0217a862b047 233 }
prussell 0:0217a862b047 234 }
prussell 0:0217a862b047 235 }