From 7e7425836397d2b74ee2b24a87e766743289ad89 Mon Sep 17 00:00:00 2001
From: LiquidFenrir <liquidfenrir@outlook.fr>
Date: Fri, 11 Aug 2017 04:29:38 +0200
Subject: [PATCH] check if nwm is running to fix
 https://github.com/AuroraWright/Luma3DS/issues/774

---
 sysmodules/rosalina/source/menus/sysconfig.c | 43 ++++++++++++++++++--
 1 file changed, 40 insertions(+), 3 deletions(-)

diff --git a/sysmodules/rosalina/source/menus/sysconfig.c b/sysmodules/rosalina/source/menus/sysconfig.c
index 56f8717..bd72724 100644
--- a/sysmodules/rosalina/source/menus/sysconfig.c
+++ b/sysmodules/rosalina/source/menus/sysconfig.c
@@ -85,21 +85,58 @@ void SysConfigMenu_ToggleWireless(void)
     Draw_FlushFramebuffer();
     Draw_Unlock();
 
+    bool nwmRunning = false;
+
+    u32 pidList[0x40];
+    s32 processAmount;
+
+    svcGetProcessList(&processAmount, pidList, 0x40);
+
+    for(s32 i = 0; i < processAmount; i++)
+    {
+        Handle processHandle;
+        Result res = svcOpenProcess(&processHandle, pidList[i]);
+        if(R_FAILED(res))
+            continue;
+
+        char processName[8] = {0};
+        svcGetProcessInfo((s64 *)&processName, processHandle, 0x10000);
+        svcCloseHandle(processHandle);
+
+        if(!strncmp(processName, "nwm", 4))
+        {
+            nwmRunning = true;
+            break;
+        }
+    }
+
     do
     {
         Draw_Lock();
         Draw_DrawString(10, 10, COLOR_TITLE, "System configuration menu");
         Draw_DrawString(10, 30, COLOR_WHITE, "Press A to toggle, press B to go back.");
-        Draw_DrawString(10, 50, COLOR_WHITE, "Current status:");
 
         u8 wireless = (*(vu8 *)((0x10140000 | (1u << 31)) + 0x180));
-        Draw_DrawString(100, 50, (wireless ? COLOR_GREEN : COLOR_RED), (wireless ? " ON " : " OFF"));
+
+        if(nwmRunning)
+        {
+            Draw_DrawString(10, 50, COLOR_WHITE, "Current status:");
+            Draw_DrawString(100, 50, (wireless ? COLOR_GREEN : COLOR_RED), (wireless ? " ON " : " OFF"));
+        }
+        else
+        {
+            Draw_DrawString(10, 50, COLOR_RED, "NWM isn't running.");
+            Draw_DrawString(10, 60, COLOR_RED, "If you're currently on Test Menu,");
+            Draw_DrawString(10, 70, COLOR_RED, "exit then press R+RIGHT to toggle the WiFi.");
+            Draw_DrawString(10, 80, COLOR_RED, "Otherwise, simply exit and wait a few seconds.");
+        }
+
         Draw_FlushFramebuffer();
         Draw_Unlock();
 
         u32 pressed = waitInputWithTimeout(1000);
 
-        if(pressed & BUTTON_A)
+        if(pressed & BUTTON_A && nwmRunning)
         {
             nwmExtInit();
             NWMEXT_ControlWirelessEnabled(!wireless);