add some return values to some shit so it shuts down elegantly on crash

include/LCDDisplay.hpp

@@ -11,11 +11,12 @@
 class LCDDisplay {
    private:
     int _lcd = -1;
+    uint32_t _baud = 0;
     std::string _dev;
     std::array<char, LCD_LINES * LCD_COLS + 8> writebuf{};         // 4x40 chars + 2x4 setcursor commands
     static constexpr bool dualDisp = (LCD_LINES * LCD_COLS > 80);  // is it dual display device or not, evauluated from the size at compile time
 
-    void open(bool reopen = false);
+    int open(bool reopen = false);
     void write(const uint8_t* cmdbuf, uint8_t len);
     void close();
 
@@ -27,6 +28,7 @@ class LCDDisplay {
     explicit LCDDisplay(const std::string& dev, uint32_t baud = 0010002);  // from termios-baud.h, B115200
     ~LCDDisplay();
 
+    int Init();
     void clear();
     void setContrast(uint8_t contrast);
     void setBacklight(bool enabled);

include/app.hpp

@@ -34,7 +34,7 @@ class Application {
 
     explicit Application(Config config);
     ~Application();
-    void Run();
+    int Run();
 
    private:
     struct Sensors {
@@ -55,6 +55,8 @@ class Application {
         sigset_t sigset;
     };
 
+    pid_t m_mainPid{};
+    int m_ret = 0;
     Config m_config{};  // m_ is prefix for member variable
     Control m_control{};
     Sensors m_sensors{};
@@ -62,6 +64,8 @@ class Application {
     void hassThread(const std::stop_token& st);
     void sensorsThread(const std::stop_token& st);
     void displayThread(const std::stop_token& st);
+
+    void Crash(int ret);
 };
 
 #endif

include/cpu.hpp

@@ -25,7 +25,7 @@ struct cpuSensors {
     std::string hwmon;
 };
 
-void detectHwmon(cpuSensors* target, const std::string& pci);
+int detect(cpuSensors* target, const std::string& pci);
 void update(cpuSensors* c);
 
 }  // namespace cpu

include/gpu.hpp

@@ -40,7 +40,7 @@ struct gpuSensors {
     std::string hwmon;
 };
 
-void detectHwmon(gpuSensors* target, const std::string& pci);
+int detect(gpuSensors* target, const std::string& pci);
 void update(gpuSensors* g);
 
 }  // namespace gpu

include/sys.hpp

@@ -41,7 +41,7 @@ void getTimeDate(TimeDate* td);
 void getDisk(Disk* disk);
 void getRam(Memory* mem);
 void getNetwork(Network* net, const std::string& device);
-void detectHwmon(sysSensors* s, const std::string& platform);
+int detect(sysSensors* s, const std::string& platform);
 void updateSensors(sysSensors* s);
 
 }  // namespace sys