Delta
Demo Glucose Service
Dependencies: BLE_API mbed nRF51822
Fork of
BLE_HeartRate
by 
Bluetooth Low Energy
BLE_Glucose_demo implements the Glucose Service which enables a collector device to connect and interact with.
There is a brief sample code edited with Android Studio for demo this BLE_Glucose_demo example, and it is public on github, everyone can clone it by this URL: https://github.com/Marcomissyou/BluetoothLeGlucose.git. It is convenient for you to development your BLE idea.
There is also provided apk file so you can download and install it directly then demo this code, but make sure your Android phone supports Bluetooth 4.0. /media/uploads/Marcomissyou/bleglucoseservice.apk
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
--- 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