v07 pid and negative voltage limit change

now the voltage limits are from -5 to +12V for the output and the pid loop is now implemented, but not tested yet

Core/Src/main.c

@@ -691,6 +691,8 @@ void vDefaultTask(void *argument)
 void Error_Handler(void)
 {
   /* USER CODE BEGIN Error_Handler_Debug */
+
+
   /* User can add his own implementation to report the HAL error return state */
   __disable_irq();
   while (1)