Fix PDITarget_ReceiveByte() not discarding the start bit properly, and reading in...

[pub/USBasp.git] / Demos / Host / LowLevel / StillImageHost / ConfigDescriptor.c

diff --git a/Demos/Host/LowLevel/StillImageHost/ConfigDescriptor.c b/Demos/Host/LowLevel/StillImageHost/ConfigDescriptor.c
index 86a96b3..8a6dc28 100644 (file)
--- a/Demos/Host/LowLevel/StillImageHost/ConfigDescriptor.c
+++ b/Demos/Host/LowLevel/StillImageHost/ConfigDescriptor.c
@@ -43,34 +43,30 @@
  *\r
  *  This routine searches for a SI interface descriptor containing bulk IN and OUT data endpoints.\r
  *\r
- *  \return An error code from the StillImageHost_GetConfigDescriptorDataCodes_t enum.\r
+ *  \return An error code from the \ref StillImageHost_GetConfigDescriptorDataCodes_t enum.\r
  */\r
 uint8_t ProcessConfigurationDescriptor(void)\r
 {\r
-       uint8_t* ConfigDescriptorData;\r
-       uint16_t ConfigDescriptorSize;\r
+       uint8_t  ConfigDescriptorData[512];\r
+       void*    CurrConfigLocation = ConfigDescriptorData;\r
+       uint16_t CurrConfigBytesRem;\r
        uint8_t  FoundEndpoints = 0;\r
-       \r
-       /* Get Configuration Descriptor size from the device */\r
-       if (USB_GetDeviceConfigDescriptor(1, &ConfigDescriptorSize, NULL) != HOST_SENDCONTROL_Successful)\r
-         return ControlError;\r
-       \r
-       /* Ensure that the Configuration Descriptor isn't too large */\r
-       if (ConfigDescriptorSize > MAX_CONFIG_DESCRIPTOR_SIZE)\r
-         return DescriptorTooLarge;\r
-         \r
-       /* Allocate enough memory for the entire config descriptor */\r
-       ConfigDescriptorData = alloca(ConfigDescriptorSize);\r
 \r
        /* Retrieve the entire configuration descriptor into the allocated buffer */\r
-       USB_GetDeviceConfigDescriptor(1, &ConfigDescriptorSize, ConfigDescriptorData);\r
-       \r
-       /* Validate returned data - ensure first entry is a configuration header descriptor */\r
-       if (DESCRIPTOR_TYPE(ConfigDescriptorData) != DTYPE_Configuration)\r
-         return InvalidConfigDataReturned;\r
+       switch (USB_Host_GetDeviceConfigDescriptor(1, &CurrConfigBytesRem, ConfigDescriptorData, sizeof(ConfigDescriptorData)))\r
+       {\r
+               case HOST_GETCONFIG_Successful:\r
+                       break;\r
+               case HOST_GETCONFIG_InvalidData:\r
+                       return InvalidConfigDataReturned;\r
+               case HOST_GETCONFIG_BuffOverflow:\r
+                       return DescriptorTooLarge;\r
+               default:\r
+                       return ControlError;\r
+       }\r
        \r
        /* Get the Still Image interface from the configuration descriptor */\r
-       if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,\r
+       if (USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,\r
                                      DComp_NextStillImageInterface) != DESCRIPTOR_SEARCH_COMP_Found)\r
        {\r
                /* Descriptor not found, error out */\r
@@ -81,14 +77,14 @@ uint8_t ProcessConfigurationDescriptor(void)
        while (FoundEndpoints != ((1 << SIMAGE_EVENTS_PIPE) | (1 << SIMAGE_DATA_IN_PIPE) | (1 << SIMAGE_DATA_OUT_PIPE)))\r
        {\r
                /* Fetch the next endpoint from the current Still Image interface */\r
-               if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,\r
-                                             DComp_NextSImageInterfaceDataEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)\r
+               if (USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,\r
+                                             DComp_NextStillImageInterfaceDataEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)\r
                {\r
                        /* Descriptor not found, error out */\r
                        return NoEndpointFound;\r
                }\r
                \r
-               USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Endpoint_t);\r
+               USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(CurrConfigLocation, USB_Descriptor_Endpoint_t);\r
 \r
                /* Check if the found endpoint is a interrupt or bulk type descriptor */\r
                if ((EndpointData->Attributes & EP_TYPE_MASK) == EP_TYPE_INTERRUPT)\r
@@ -101,7 +97,6 @@ uint8_t ProcessConfigurationDescriptor(void)
                                                                   EndpointData->EndpointAddress, EndpointData->EndpointSize,\r
                                                                   PIPE_BANK_DOUBLE);                   \r
 \r
-                               Pipe_SetInfiniteINRequests();\r
                                Pipe_SetInterruptPeriod(EndpointData->PollingIntervalMS);\r
                                \r
                                /* Set the flag indicating that the events pipe has been found */\r
@@ -118,8 +113,6 @@ uint8_t ProcessConfigurationDescriptor(void)
                                                                   EndpointData->EndpointAddress, EndpointData->EndpointSize,\r
                                                                   PIPE_BANK_DOUBLE);\r
 \r
-                               Pipe_SetInfiniteINRequests();\r
-\r
                                /* Set the flag indicating that the data IN pipe has been found */\r
                                FoundEndpoints |= (1 << SIMAGE_DATA_IN_PIPE);\r
                        }\r
@@ -173,7 +166,7 @@ uint8_t DComp_NextStillImageInterface(void* CurrentDescriptor)
  *\r
  *  \return A value from the DSEARCH_Return_ErrorCodes_t enum\r
  */\r
-uint8_t DComp_NextSImageInterfaceDataEndpoint(void* CurrentDescriptor)\r
+uint8_t DComp_NextStillImageInterfaceDataEndpoint(void* CurrentDescriptor)\r
 {\r
        if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Endpoint)\r
        {\r