Environmental Sensor for NRF board

Dependencies:   DHT11

Files at this revision

API Documentation at this revision

Comitter:
krissl
Date:
Wed Jan 16 09:50:35 2019 +0000
Commit message:
Test;

Changed in this revision

.mbed Show annotated file Show diff for this revision Revisions of this file
img/connection.png Show annotated file Show diff for this revision Revisions of this file
img/discovery.png Show annotated file Show diff for this revision Revisions of this file
img/notifications.png Show annotated file Show diff for this revision Revisions of this file
img/register_to_notifications.png Show annotated file Show diff for this revision Revisions of this file
img/scan_result.png Show annotated file Show diff for this revision Revisions of this file
img/start_scan.png Show annotated file Show diff for this revision Revisions of this file
mbed-os.lib Show annotated file Show diff for this revision Revisions of this file
mbed_app.json Show annotated file Show diff for this revision Revisions of this file
module.json Show annotated file Show diff for this revision Revisions of this file
readme.md Show annotated file Show diff for this revision Revisions of this file
shields/TARGET_CORDIO_BLUENRG.lib Show annotated file Show diff for this revision Revisions of this file
source/DHT11.lib Show annotated file Show diff for this revision Revisions of this file
source/main.cpp Show annotated file Show diff for this revision Revisions of this file
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/.mbed	Wed Jan 16 09:50:35 2019 +0000
@@ -0,0 +1,1 @@
+ROOT=.
Binary file img/connection.png has changed
Binary file img/discovery.png has changed
Binary file img/notifications.png has changed
Binary file img/register_to_notifications.png has changed
Binary file img/scan_result.png has changed
Binary file img/start_scan.png has changed
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed-os.lib	Wed Jan 16 09:50:35 2019 +0000
@@ -0,0 +1,1 @@
+https://github.com/ARMmbed/mbed-os/#c966348d3f9ca80843be7cdc9b748f06ea73ced0
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed_app.json	Wed Jan 16 09:50:35 2019 +0000
@@ -0,0 +1,21 @@
+{
+    "target_overrides": {
+        "*":{
+            "target.NRF_SDH_BLE_CENTRAL_LINK_COUNT": 2, 
+            "target.NRF_SDH_BLE_PERIPHERAL_LINK_COUNT": 0,
+            "target.NRF_SDH_BLE_TOTAL_LINK_COUNT" : 2
+        },
+        "K64F": {
+            "target.features_add": ["BLE"],
+            "target.extra_labels_add": ["CORDIO", "CORDIO_BLUENRG"]
+        },
+        "NUCLEO_F401RE": {
+            "target.features_add": ["BLE"],
+            "target.extra_labels_add": ["CORDIO", "CORDIO_BLUENRG"]
+        },
+        "DISCO_L475VG_IOT01A": {
+            "target.features_add": ["BLE"],
+            "target.extra_labels_add": ["CORDIO", "CORDIO_BLUENRG"]
+        }
+    }
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/module.json	Wed Jan 16 09:50:35 2019 +0000
@@ -0,0 +1,16 @@
+{
+  "name": "ble-batterylevel",
+  "version": "0.0.1",
+  "description": "An example of creating and updating a simple GATT Service using the BLE_API",
+  "licenses": [
+    {
+      "url": "https://spdx.org/licenses/Apache-2.0",
+      "type": "Apache-2.0"
+    }
+  ],
+  "dependencies": {
+    "ble": "^2.0.0"
+  },
+  "targetDependencies": {},
+  "bin": "./source"
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/readme.md	Wed Jan 16 09:50:35 2019 +0000
@@ -0,0 +1,68 @@
+This example creates and updates a standard Battery Level service containing a single
+GATT characteristic.
+
+The [battery service transmits](https://developer.bluetooth.org/gatt/services/Pages/ServiceViewer.aspx?u=org.bluetooth.service.battery_service.xml) a device's battery level in percentage, with 100% being a fully charged battery and 0% being a fully drained battery.
+
+Although the sample application runs on a BLE device, it doesn't show the device's real battery level (because that changes very slowly and will make for a dull example). Instead, it transmits a fake battery level that starts at 50% (half charged). Every half second, it increments the battery level, going in single increments until reaching 100% (as if the battery is charging). It then drops down to 20% to start incrementing again.
+
+# Running the application
+
+## Requirements
+
+The sample application can be seen on any BLE scanner on a smartphone. If you don't have a scanner on your phone, please install :
+
+- [nRF Master Control Panel](https://play.google.com/store/apps/details?id=no.nordicsemi.android.mcp) for Android.
+
+- [LightBlue](https://itunes.apple.com/gb/app/lightblue-bluetooth-low-energy/id557428110?mt=8) for iPhone.
+
+Hardware requirements are in the [main readme](https://github.com/ARMmbed/mbed-os-example-ble/blob/master/README.md).
+
+## Building instructions
+
+Building instructions for all samples are in the [main readme](https://github.com/ARMmbed/mbed-os-example-ble/blob/master/README.md).
+
+## Checking for success
+
+**Note:** Screens captures depicted below show what is expected from this example if the scanner used is *nRF Master Control Panel* version 4.0.5. If you encounter any difficulties consider trying another scanner or another version of nRF Master Control Panel. Alternative scanners may require reference to their manuals.
+
+1. Build the application and install it on your board as explained in the building instructions.
+1. Open the BLE scanner on your phone.
+1. Start a scan.
+
+    ![](img/start_scan.png)
+
+    **figure 1** How to start scan using nRF Master Control Panel 4.0.5
+
+1. Find your device; it should be named `BATTERY`.
+
+    ![](img/scan_result.png)
+
+    **figure 2** Scan results using nRF Master Control Panel 4.0.5
+
+1. Establish a connection with your device.
+
+    ![](img/connection.png)
+
+    **figure 3**  How to establish a connection using Master Control Panel 4.0.5
+
+1. Discover the services and the characteristics on the device. The *Battery service* has the UUID 0x180F and includes the *Battery level* characteristic which has the UUID 0x2A19.
+
+    ![](img/discovery.png)
+
+    **figure 4** Representation of the Battery service using Master Control Panel 4.0.5
+
+1. Register for the notifications sent by the *Battery level* characteristic.
+
+    ![](img/register_to_notifications.png)
+
+    **figure 5** How to register to notifications using Master Control Panel 4.0.5
+
+
+1. You should see the battery level value change every half second. It begins at 50, goes up to 100 (in steps of 1), resets to 20 and so on.
+
+    ![](img/notifications.png)
+
+    **figure 6** Notifications view using Master Control Panel 4.0.5
+
+If you can see the characteristic, and if its value is incrementing correctly, the application is working properly.
+
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/shields/TARGET_CORDIO_BLUENRG.lib	Wed Jan 16 09:50:35 2019 +0000
@@ -0,0 +1,1 @@
+https://github.com/ARMmbed/cordio-ble-x-nucleo-idb0xa1/#51f60dfea514e35e5aa13c8e24005ecadc24a9f5
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/source/DHT11.lib	Wed Jan 16 09:50:35 2019 +0000
@@ -0,0 +1,1 @@
+https://os.mbed.com/users/fossum_13/code/DHT11/#5da6f6de3e42
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/source/main.cpp	Wed Jan 16 09:50:35 2019 +0000
@@ -0,0 +1,147 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2006-2014 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 <events/mbed_events.h>
+#include <mbed.h>
+#include "ble/BLE.h"
+#include "ble/Gap.h"
+#include "ble/services/EnvironmentalService.h"
+#include "GattCallbackParamTypes.h"
+ #include "mbed.h"
+ #include "Dht11.h"
+
+Serial pc(USBTX, USBRX);
+Dht11 sensor(A0);
+//DigitalOut sensorPower(PTD24, 1);
+ 
+//Serial pc(USBTX, USBRX); // tx, rx
+
+DigitalOut led1(LED1, 1);
+
+const static char     DEVICE_NAME[] = "MARCO&KRIS-slow";
+static const uint16_t uuid16_list[] = {GattService::UUID_ENVIRONMENTAL_SERVICE};
+
+static uint8_t batteryLevel = 50;
+static EnvironmentalService* batteryServicePtr;
+
+static EventQueue eventQueue(/* event count */ 16 * EVENTS_EVENT_SIZE);
+
+void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *params)
+{
+    BLE::Instance().gap().startAdvertising();
+}
+void connectionCallback(const Gap::ConnectionCallbackParams_t *params) 
+{
+    pc.printf("\r\n *******Got connection****** \r\n");
+    /* Setup advertising */
+    BLE::Instance().gap().startAdvertising();
+    pc.printf("****** Restarted advertising? ******\r\n");
+}
+void updateSensorValue() {
+//    pc.printf("Temp sensing");
+    sensor.read();
+    pc.printf("T: %d, H: %d\r\n", sensor.getCelsius(), sensor.getHumidity());
+    batteryServicePtr->updateHumidity(sensor.getHumidity());
+    batteryServicePtr->updateTemperature(sensor.getCelsius());
+}
+
+void blinkCallback(void)
+{
+    led1 = !led1; /* Do blinky on LED1 while we're waiting for BLE events */
+    
+    BLE &ble = BLE::Instance();
+    if (ble.gap().getState().connected) {
+        eventQueue.call(updateSensorValue);
+    }
+}
+
+/**
+ * This function is called when the ble initialization process has failled
+ */
+void onBleInitError(BLE &ble, ble_error_t error)
+{
+    /* Initialization error handling should go here */
+}
+
+void printMacAddress()
+{
+    /* Print out device MAC address to the console*/
+    Gap::AddressType_t addr_type;
+    Gap::Address_t address;
+    BLE::Instance().gap().getAddress(&addr_type, address);
+    pc.printf("DEVICE MAC ADDRESS: ");
+    for (int i = 5; i >= 1; i--){
+        pc.printf("%02x:", address[i]);
+    }
+    pc.printf("%02x\r\n", address[0]);
+}
+
+/**
+ * Callback triggered when the ble initialization process has finished
+ */
+void bleInitComplete(BLE::InitializationCompleteCallbackContext *params)
+{
+    BLE&        ble   = params->ble;
+    ble_error_t error = params->error;
+
+    if (error != BLE_ERROR_NONE) {
+        /* In case of error, forward the error handling to onBleInitError */
+        onBleInitError(ble, error);
+        return;
+    }
+
+    /* Ensure that it is the default instance of BLE */
+    if(ble.getInstanceID() != BLE::DEFAULT_INSTANCE) {
+        return;
+    }
+
+    ble.gap().onDisconnection(disconnectionCallback);
+    ble.gap().onConnection(connectionCallback);
+    /* Setup primary service */
+    batteryServicePtr = new EnvironmentalService(ble);
+
+    /* Setup advertising */
+    ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE);
+    ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *) uuid16_list, sizeof(uuid16_list));
+    ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *) DEVICE_NAME, sizeof(DEVICE_NAME));
+//    ble.gattServer().onDataRead(blinkCallback);
+    ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
+    ble.gap().setAdvertisingInterval(1000); /* 1000ms */
+    pc.printf("Advertising slowly");
+    ble.gap().startAdvertising();
+
+    printMacAddress();
+}
+
+void scheduleBleEventsProcessing(BLE::OnEventsToProcessCallbackContext* context) {
+    BLE &ble = BLE::Instance();
+    eventQueue.call(Callback<void()>(&ble, &BLE::processEvents));
+}
+
+int main()
+{
+        pc.baud (115200);
+
+    eventQueue.call_every(500, blinkCallback);
+
+    BLE &ble = BLE::Instance();
+    ble.onEventsToProcess(scheduleBleEventsProcessing);
+    ble.init(bleInitComplete);
+
+    eventQueue.dispatch_forever();
+
+    return 0;
+}