Paulo Roman / Mbed 2 deprecated BLE_HeartRate

BLE FORK

Dependencies:   BLE_API mbed nRF51822

Fork of BLE_HeartRate by Bluetooth Low Energy

Files at this revision

API Documentation at this revision

Revision 52:6bbf62943106, committed 2014-11-21

Comitter:
rgrover1
Date:
Fri Nov 21 10:12:28 2014 +0000
Parent:
51:cba5deb3b404
Child:
53:06a74fd722b8
Commit message:
add some code to configure slower connection interval

Changed in this revision

BLE_API.lib Show annotated file Show diff for this revision Revisions of this file
main.cpp Show annotated file Show diff for this revision Revisions of this file
nRF51822.lib Show annotated file Show diff for this revision Revisions of this file 
--- a/BLE_API.lib	Thu Nov 20 14:47:12 2014 +0200
+++ b/BLE_API.lib	Fri Nov 21 10:12:28 2014 +0000
@@ -1,1 +1,1 @@
-http://mbed.org/teams/Bluetooth-Low-Energy/code/BLE_API/#fede41ce9407
+http://mbed.org/teams/Bluetooth-Low-Energy/code/BLE_API/#a7ded9ad83c8

--- a/main.cpp	Thu Nov 20 14:47:12 2014 +0200
+++ b/main.cpp	Fri Nov 21 10:12:28 2014 +0000
@@ -20,6 +20,12 @@
 #include "BatteryService.h"
 #include "DeviceInformationService.h"
 
+/* Enable the following if you need to throttle the connection interval. This has
+ * the effect of reducing energy consumption after a connection is made;
+ * particularly for applications where the central may want a fast connection
+ * interval.*/
+#define UPDATE_PARAMS_FOR_LONGER_CONNECTION_INTERVAL 0
+
 BLEDevice  ble;
 DigitalOut led1(LED1);
 
@@ -34,6 +40,28 @@
     ble.startAdvertising(); // restart advertising
 }
 
+void onConnectionCallback(Gap::Handle_t handle, Gap::addr_type_t peerAddrType, const Gap::address_t peerAddr, const Gap::ConnectionParams_t *params)
+{
+    #if UPDATE_PARAMS_FOR_LONGER_CONNECTION_INTERVAL
+    /* Updating connection parameters can be attempted only after a connection has been
+     * established. Please note that the ble-Central is still the final arbiter for
+     * the effective parameters; the peripheral can only hope that the request is
+     * honored. Please also be mindful of the constraints that might be enforced by
+     * the BLE stack on the underlying controller.*/
+    #define MIN_CONN_INTERVAL 250  /**< Minimum connection interval (250 ms) */
+    #define MAX_CONN_INTERVAL 350  /**< Maximum connection interval (350 ms). */
+    #define CONN_SUP_TIMEOUT  6000 /**< Connection supervisory timeout (6 seconds). */
+    #define SLAVE_LATENCY     4
+
+        Gap::ConnectionParams_t gap_conn_params;
+        gap_conn_params.minConnectionInterval        = Gap::MSEC_TO_GAP_DURATION_UNITS(MIN_CONN_INTERVAL);
+        gap_conn_params.maxConnectionInterval        = Gap::MSEC_TO_GAP_DURATION_UNITS(MAX_CONN_INTERVAL);
+        gap_conn_params.connectionSupervisionTimeout = Gap::MSEC_TO_GAP_DURATION_UNITS(CONN_SUP_TIMEOUT);
+        gap_conn_params.slaveLatency                 = SLAVE_LATENCY;
+        ble.updateConnectionParams(handle, &gap_conn_params);
+    #endif /* #if UPDATE_PARAMS_FOR_LONGER_CONNECTION_INTERVAL */
+}
+
 void periodicCallback(void)
 {
     led1 = !led1; /* Do blinky on LED1 while we're waiting for BLE events */
@@ -51,6 +79,9 @@
 
     ble.init();
     ble.onDisconnection(disconnectionCallback);
+#if UPDATE_PARAMS_FOR_LONGER_CONNECTION_INTERVAL
+    ble.onConnection(onConnectionCallback);
+#endif /* #if UPDATE_PARAMS_FOR_LONGER_CONNECTION_INTERVAL */
 
     /* Setup primary service. */
     uint8_t hrmCounter = 100;

--- a/nRF51822.lib	Thu Nov 20 14:47:12 2014 +0200
+++ b/nRF51822.lib	Fri Nov 21 10:12:28 2014 +0000
@@ -1,1 +1,1 @@
-http://mbed.org/teams/Nordic-Semiconductor/code/nRF51822/#61da91a52bd6
+http://mbed.org/teams/Nordic-Semiconductor/code/nRF51822/#9a5ba2c5d53c