From 669cf46ae0a72145b9f816f6de3f1ec6d462e9ac Mon Sep 17 00:00:00 2001
From: Willy-JL <49810075+Willy-JL@users.noreply.github.com>
Date: Mon, 5 Aug 2024 20:23:16 +0200
Subject: [PATCH] BadKB: Lower BLE conn interval like base HID profile

---
 applications/main/bad_kb/helpers/ble_hid.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/applications/main/bad_kb/helpers/ble_hid.c b/applications/main/bad_kb/helpers/ble_hid.c
index 2240bca35..2f6dd8c2a 100644
--- a/applications/main/bad_kb/helpers/ble_hid.c
+++ b/applications/main/bad_kb/helpers/ble_hid.c
@@ -373,6 +373,12 @@ bool ble_profile_hid_mouse_scroll(FuriHalBleProfileBase* profile, int8_t delta)
     return state;
 }
 
+// AN5289: 4.7, in order to use flash controller interval must be at least 25ms + advertisement, which is 30 ms
+// Since we don't use flash controller anymore interval can be lowered to 7.5ms
+#define CONNECTION_INTERVAL_MIN (0x0006)
+// Up to 45 ms
+#define CONNECTION_INTERVAL_MAX (0x24)
+
 static GapConfig template_config = {
     .adv_service_uuid = HUMAN_INTERFACE_DEVICE_SERVICE_UUID,
     .appearance_char = GAP_APPEARANCE_KEYBOARD,
@@ -380,8 +386,8 @@ static GapConfig template_config = {
     .pairing_method = GapPairingPinCodeVerifyYesNo,
     .conn_param =
         {
-            .conn_int_min = 0x18, // 30 ms
-            .conn_int_max = 0x24, // 45 ms
+            .conn_int_min = CONNECTION_INTERVAL_MIN,
+            .conn_int_max = CONNECTION_INTERVAL_MAX,
             .slave_latency = 0,
             .supervisor_timeout = 0,
         },