From 0395394e26603423fdbcfbaca8a2a3b3989209c4 Mon Sep 17 00:00:00 2001
From: denta58 <vereslakosszabolcs@gmail.com>
Date: Sun, 4 Dec 2022 21:01:57 +0100
Subject: [PATCH] Bluetooth pressure data parse

---
 .../opentracks/sensors/BluetoothUtilsTest.java   | 14 ++++++++++++++
 .../opentracks/sensors/BluetoothUtils.java       | 16 ++++++++++++++++
 2 files changed, 30 insertions(+)

diff --git a/src/androidTest/java/de/dennisguse/opentracks/sensors/BluetoothUtilsTest.java b/src/androidTest/java/de/dennisguse/opentracks/sensors/BluetoothUtilsTest.java
index 6f37ea39a..8654a4658 100644
--- a/src/androidTest/java/de/dennisguse/opentracks/sensors/BluetoothUtilsTest.java
+++ b/src/androidTest/java/de/dennisguse/opentracks/sensors/BluetoothUtilsTest.java
@@ -43,6 +43,20 @@ public class BluetoothUtilsTest {
         assertEquals(HeartRate.of(257), heartRate);
     }
 
+    @Test
+    public void parsePressure_Pa() {
+        // given
+        BluetoothGattCharacteristic characteristic = new BluetoothGattCharacteristic(BluetoothUtils.PRESSURE.getServiceUUID(), 0, 0);
+        characteristic.setValue(new byte[]{(byte) 0xB2, (byte) 0x48, (byte) 0x0F, (byte) 0x00});
+
+
+        // when
+        int pressure = BluetoothUtils.parsePressure(characteristic);
+
+        // then
+        assertEquals(1001650, pressure);
+    }
+
     @Test
     public void parseCyclingSpeedCadence_crankOnly() {
         BluetoothGattCharacteristic characteristic = new BluetoothGattCharacteristic(BluetoothUtils.CYCLING_SPEED_CADENCE.getServiceUUID(), 0, 0);
diff --git a/src/main/java/de/dennisguse/opentracks/sensors/BluetoothUtils.java b/src/main/java/de/dennisguse/opentracks/sensors/BluetoothUtils.java
index a5c11b382..23e099d81 100644
--- a/src/main/java/de/dennisguse/opentracks/sensors/BluetoothUtils.java
+++ b/src/main/java/de/dennisguse/opentracks/sensors/BluetoothUtils.java
@@ -69,6 +69,11 @@ public class BluetoothUtils {
             ))
     );
 
+    public static final ServiceMeasurementUUID PRESSURE = new ServiceMeasurementUUID(
+            new UUID(0x181A00001000L, 0x800000805f9b34fbL),
+            new UUID(0x2A6D00001000L, 0x800000805f9b34fbL)
+    );
+
     public static final ServiceMeasurementUUID CYCLING_POWER = new ServiceMeasurementUUID(
             new UUID(0x181800001000L, 0x800000805f9b34fbL),
             new UUID(0x2A6300001000L, 0x800000805f9b34fbL)
@@ -137,6 +142,17 @@ public class BluetoothUtils {
         return null;
     }
 
+    public static Integer parsePressure(BluetoothGattCharacteristic characteristic) {
+        byte[] raw = characteristic.getValue();
+
+        if (raw.length < 4) {
+            return null;
+        }
+
+        Float fPressure = characteristic.getFloatValue(BluetoothGattCharacteristic.FORMAT_FLOAT, 0);
+        return Math.round(fPressure);
+    }
+
     public static SensorDataCyclingPower.Data parseCyclingPower(String address, String sensorName, BluetoothGattCharacteristic characteristic) {
         // DOCUMENTATION https://www.bluetooth.com/wp-content/uploads/Sitecore-Media-Library/Gatt/Xml/Characteristics/org.bluetooth.characteristic.cycling_power_measurement.xml
         int valueLength = characteristic.getValue().length;