Add explicit guards to all device mode tasks to ensure the device is connected and...

[pub/USBasp.git] / Demos / Device / LowLevel / GenericHID / GenericHID.c

diff --git a/Demos/Device/LowLevel/GenericHID/GenericHID.c b/Demos/Device/LowLevel/GenericHID/GenericHID.c
index f467494..5c6d1ee 100644 (file)
--- a/Demos/Device/LowLevel/GenericHID/GenericHID.c
+++ b/Demos/Device/LowLevel/GenericHID/GenericHID.c
@@ -202,47 +202,47 @@ void CreateGenericHIDReport(uint8_t* DataArray)
 \r
 void HID_Task(void)\r
 {\r
-       /* Check if the USB system is connected to a host */\r
-       if (USB_IsConnected)\r
+       /* Device must be connected and configured for the task to run */\r
+       if (!(USB_IsConnected) || !(USB_ConfigurationNumber))\r
+         return;\r
+\r
+       Endpoint_SelectEndpoint(GENERIC_OUT_EPNUM);\r
+       \r
+       /* Check to see if a packet has been sent from the host */\r
+       if (Endpoint_IsOUTReceived())\r
        {\r
-               Endpoint_SelectEndpoint(GENERIC_OUT_EPNUM);\r
-               \r
-               /* Check to see if a packet has been sent from the host */\r
-               if (Endpoint_IsOUTReceived())\r
+               /* Check to see if the packet contains data */\r
+               if (Endpoint_IsReadWriteAllowed())\r
                {\r
-                       /* Check to see if the packet contains data */\r
-                       if (Endpoint_IsReadWriteAllowed())\r
-                       {\r
-                               /* Create a temporary buffer to hold the read in report from the host */\r
-                               uint8_t GenericData[GENERIC_REPORT_SIZE];\r
-                               \r
-                               /* Read Generic Report Data */\r
-                               Endpoint_Read_Stream_LE(&GenericData, sizeof(GenericData));\r
-                               \r
-                               /* Process Generic Report Data */\r
-                               ProcessGenericHIDReport(GenericData);\r
-                       }\r
+                       /* Create a temporary buffer to hold the read in report from the host */\r
+                       uint8_t GenericData[GENERIC_REPORT_SIZE];\r
+                       \r
+                       /* Read Generic Report Data */\r
+                       Endpoint_Read_Stream_LE(&GenericData, sizeof(GenericData));\r
+                       \r
+                       /* Process Generic Report Data */\r
+                       ProcessGenericHIDReport(GenericData);\r
+               }\r
 \r
-                       /* Finalize the stream transfer to send the last packet */\r
-                       Endpoint_ClearOUT();\r
-               }       \r
+               /* Finalize the stream transfer to send the last packet */\r
+               Endpoint_ClearOUT();\r
+       }       \r
 \r
-               Endpoint_SelectEndpoint(GENERIC_IN_EPNUM);\r
+       Endpoint_SelectEndpoint(GENERIC_IN_EPNUM);\r
+       \r
+       /* Check to see if the host is ready to accept another packet */\r
+       if (Endpoint_IsINReady())\r
+       {\r
+               /* Create a temporary buffer to hold the report to send to the host */\r
+               uint8_t GenericData[GENERIC_REPORT_SIZE];\r
                \r
-               /* Check to see if the host is ready to accept another packet */\r
-               if (Endpoint_IsINReady())\r
-               {\r
-                       /* Create a temporary buffer to hold the report to send to the host */\r
-                       uint8_t GenericData[GENERIC_REPORT_SIZE];\r
-                       \r
-                       /* Create Generic Report Data */\r
-                       CreateGenericHIDReport(GenericData);\r
+               /* Create Generic Report Data */\r
+               CreateGenericHIDReport(GenericData);\r
 \r
-                       /* Write Generic Report Data */\r
-                       Endpoint_Write_Stream_LE(&GenericData, sizeof(GenericData));\r
+               /* Write Generic Report Data */\r
+               Endpoint_Write_Stream_LE(&GenericData, sizeof(GenericData));\r
 \r
-                       /* Finalize the stream transfer to send the last packet */\r
-                       Endpoint_ClearIN();\r
-               }\r
+               /* Finalize the stream transfer to send the last packet */\r
+               Endpoint_ClearIN();\r
        }\r
 }\r