Prompt for user if the device linked to a too low speed USB port

DSView/pv/deviceagent.cpp

@@ -40,6 +40,7 @@ void DeviceAgent::update()
     _path = "";
     _di = NULL;
     _dev_type = 0;
+    _is_new_device = false;
 
     struct ds_device_full_info info;
 
@@ -48,19 +49,14 @@ void DeviceAgent::update()
         _dev_handle = info.handle;
         _dev_type = info.dev_type;
         _di = info.di;
+        _is_new_device = info.actived_times == 1;
+
         _dev_name = QString::fromLocal8Bit(info.name);
         _driver_name = QString::fromLocal8Bit(info.driver_name);
 
         if (info.path[0] != '\0'){
             _path = QString::fromLocal8Bit(info.path);
-        }
-
-        if (is_in_history(_dev_handle) == false){
-            _is_new_device = true;
-        }
-        else{
-            _is_new_device = false; 
-        }
+        } 
     }
 }
 
@@ -288,17 +284,6 @@ GSList *DeviceAgent::get_channels()
     return ds_get_actived_device_channels();
 }
 
- bool DeviceAgent::is_in_history(ds_device_handle dev_handle)
- {
-    for(ds_device_handle h : _history_handles){
-        if (h == dev_handle){
-            return true;
-        }        
-    }
-    _history_handles.push_back(dev_handle);
-    return false;
- }
-
  int DeviceAgent::get_hardware_operation_mode()
  {
     assert(_dev_handle);

DSView/pv/deviceagent.h

@@ -175,8 +175,9 @@ public:
 
     bool check_firmware_version();
 
-    QString get_demo_operation_mode();
+    QString get_demo_operation_mode(); 
 
+public:
     GVariant* get_config_list(const sr_channel_group *group, int key);
 
     GVariant* get_config(int key, const sr_channel *ch = NULL, const sr_channel_group *cg = NULL);
@@ -211,8 +212,7 @@ public:
     bool set_config_double(int key, double value, const sr_channel *ch = NULL, const sr_channel_group *cg = NULL);
 
 private:
-    void config_changed();
-    bool is_in_history(ds_device_handle dev_handle);    
+    void config_changed(); 
 
     //---------------device config-----------/
 public:
@@ -233,8 +233,7 @@ private:
     QString     _driver_name;
     QString     _path;
     bool        _is_new_device;
-    struct sr_dev_inst  *_di;
-    std::vector<ds_device_handle> _history_handles;
+    struct sr_dev_inst  *_di; 
     IDeviceAgentCallback *_callback;
 };
 

libsigrok4DSL/dsdevice.c

@@ -207,6 +207,7 @@ SR_PRIV struct sr_dev_inst *sr_dev_inst_new(int mode, int status,
 	sdi->status = status;
     sdi->handle = (ds_device_handle)sdi;
 	sdi->dev_type = DEV_TYPE_UNKOWN;
+	sdi->actived_times = 0;
 
 	if (vendor != NULL){
 		sdi->vendor = g_strdup(vendor);

libsigrok4DSL/lib_main.c

@@ -400,6 +400,7 @@ SR_API int ds_active_device(ds_device_handle handle)
 			if (ret == SR_OK)
 			{
 				lib_ctx.actived_device_instance = dev;
+				dev->actived_times++;
 			}
 			else
 			{  
@@ -646,6 +647,7 @@ SR_API int ds_get_actived_device_info(struct ds_device_full_info *fill_info)
 	p->driver_name[0] = '\0';
 	p->dev_type = DEV_TYPE_UNKOWN;
 	p->di = NULL;
+	p->actived_times = 0;
 
 	pthread_mutex_lock(&lib_ctx.mutext);
 
@@ -655,6 +657,7 @@ SR_API int ds_get_actived_device_info(struct ds_device_full_info *fill_info)
 		p->handle = dev->handle;
 		p->dev_type = dev->dev_type;
 		p->di = dev;
+		p->actived_times = dev->actived_times;
 		strncpy(p->name, dev->name, sizeof(p->name) - 1);
 
 		if (dev->driver && dev->driver->name)

libsigrok4DSL/libsigrok-internal.h

@@ -175,6 +175,8 @@ struct sr_dev_inst {
 
     /** Device instance private data (used?) */
     void *priv;
+
+	int actived_times;
 };
 
 struct sr_session 

libsigrok4DSL/libsigrok.h

@@ -1334,6 +1334,7 @@ struct ds_device_full_info
 	char 	path[256]; //file path
 	char 	driver_name[20];
 	int 	dev_type; // enum sr_device_type
+	int 	actived_times;
 	struct sr_dev_inst *di;
 };