From 72228e35cf00f7f4d8160353b747d5bcad03afb3 Mon Sep 17 00:00:00 2001
From: Ondrej Mikle <ondrej.mikle@gmail.com>
Date: Thu, 25 Aug 2022 13:13:00 +0200
Subject: [PATCH] feat(core): show red error header when USB data not connected

---
 core/.changelog.d/2366.added           | 2 +-
 core/embed/unix/profile.c              | 6 ++++++
 core/embed/unix/profile.h              | 1 +
 core/embed/unix/usb.c                  | 3 ++-
 core/src/apps/homescreen/homescreen.py | 2 +-
 5 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/core/.changelog.d/2366.added b/core/.changelog.d/2366.added
index 4a57faa8b4..382f4c367a 100644
--- a/core/.changelog.d/2366.added
+++ b/core/.changelog.d/2366.added
@@ -1 +1 @@
-Show blue dot when USB data pins are not connected
+Show red error header when USB data pins are not connected
diff --git a/core/embed/unix/profile.c b/core/embed/unix/profile.c
index 79144650c0..6e2e0ac4c6 100644
--- a/core/embed/unix/profile.c
+++ b/core/embed/unix/profile.c
@@ -66,3 +66,9 @@ const char *profile_sdcard_path(void) {
   FILE_PATH(_sdcard_path, "/trezor.sdcard");
   return _sdcard_path;
 }
+
+const char *profile_usb_disconnect_path(void) {
+  SVAR(_disconnect_path);
+  FILE_PATH(_disconnect_path, "/trezor.usb_data_disconnected");
+  return _disconnect_path;
+}
diff --git a/core/embed/unix/profile.h b/core/embed/unix/profile.h
index b75466fa79..7df834cc80 100644
--- a/core/embed/unix/profile.h
+++ b/core/embed/unix/profile.h
@@ -33,5 +33,6 @@ const char *profile_name(void);
 const char *profile_dir(void);
 const char *profile_flash_path(void);
 const char *profile_sdcard_path(void);
+const char *profile_usb_disconnect_path(void);
 
 #endif  // __TREZOR_PROFILE_H__
diff --git a/core/embed/unix/usb.c b/core/embed/unix/usb.c
index fb3c6f7cd4..d7831219f2 100644
--- a/core/embed/unix/usb.c
+++ b/core/embed/unix/usb.c
@@ -27,6 +27,7 @@
 #include <time.h>
 #include <unistd.h>
 
+#include "profile.h"
 #include "touch.h"
 #include "usb.h"
 
@@ -252,7 +253,7 @@ void pendsv_kbd_intr(void) {}
 void mp_hal_set_vcp_iface(int iface_num) {}
 
 secbool usb_configured(void) {
-  if (access("/var/tmp/trezor.usb_data_disconnected", F_OK) == 0) {
+  if (access(profile_usb_disconnect_path(), F_OK) == 0) {
     return secfalse;
   }
 
diff --git a/core/src/apps/homescreen/homescreen.py b/core/src/apps/homescreen/homescreen.py
index c2a00a6b6d..9db89d9ffa 100644
--- a/core/src/apps/homescreen/homescreen.py
+++ b/core/src/apps/homescreen/homescreen.py
@@ -68,7 +68,7 @@ class Homescreen(HomescreenBase):
         # Differs for each model
 
         if not utils.usb_data_connected():
-            ui.display.bar(0, 0, 8, 8, ui.BLUE)
+            ui.header_error("NO USB CONNECTION")
 
         # TODO: support homescreen avatar change for R and 1
         if utils.MODEL in ("T",):