From 11ac01f0e8524a30aa4e2e270122ecaeb21b14b5 Mon Sep 17 00:00:00 2001
From: cpfeiffer <cpfeiffer@users.noreply.github.com>
Date: Wed, 23 Mar 2016 22:50:42 +0100
Subject: [PATCH] Set low latency mode during initialization #249

This appears to fix the initialization getting stuck sometimes, e.g.
after turning on bluetooth and then connecting.

The band incidentally sends 0x8 when it's stuck (won't accept the UUID_PAIR
request).
---
 .../service/devices/miband/MiBandSupport.java        | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/miband/MiBandSupport.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/miband/MiBandSupport.java
index 8dab5a4cd..ff12bf681 100644
--- a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/miband/MiBandSupport.java
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/miband/MiBandSupport.java
@@ -97,6 +97,7 @@ public class MiBandSupport extends AbstractBTLEDeviceSupport {
     protected TransactionBuilder initializeDevice(TransactionBuilder builder) {
         builder.add(new SetDeviceStateAction(getDevice(), State.INITIALIZING, getContext()));
         enableNotifications(builder, true)
+                .setLowLatency(builder)
                 .pair(builder)
                 .requestDeviceInfo(builder)
                 .sendUserInfo(builder)
@@ -106,10 +107,21 @@ public class MiBandSupport extends AbstractBTLEDeviceSupport {
                 .enableFurtherNotifications(builder, true)
                 .setCurrentTime(builder)
                 .requestBatteryInfo(builder)
+                .setHighLatency(builder)
                 .setInitialized(builder);
         return builder;
     }
 
+    private MiBandSupport setLowLatency(TransactionBuilder builder) {
+        builder.write(getCharacteristic(MiBandService.UUID_CHARACTERISTIC_LE_PARAMS), getLowLatency());
+        return this;
+    }
+
+    private MiBandSupport setHighLatency(TransactionBuilder builder) {
+        builder.write(getCharacteristic(MiBandService.UUID_CHARACTERISTIC_LE_PARAMS), getHighLatency());
+        return this;
+    }
+
     private MiBandSupport checkAuthenticationNeeded(TransactionBuilder builder, GBDevice device) {
         builder.add(new CheckAuthenticationNeededAction(device));
         return this;