Added new Printer Host mode Class driver.

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

diff --git a/Demos/Host/LowLevel/StillImageHost/Lib/StillImageCommands.c b/Demos/Host/LowLevel/StillImageHost/Lib/StillImageCommands.c
index bf85750..4735781 100644 (file)
--- a/Demos/Host/LowLevel/StillImageHost/Lib/StillImageCommands.c
+++ b/Demos/Host/LowLevel/StillImageHost/Lib/StillImageCommands.c
@@ -37,7 +37,6 @@
 \r
 #include "StillImageCommands.h"\r
 \r
-/* Globals: */\r
 /** PIMA block container for the block to send to the device */\r
 PIMA_Container_t PIMA_SendBlock;\r
 \r
@@ -80,24 +79,28 @@ void SImage_SendBlockHeader(void)
 }\r
 \r
 /** Function to receive a PIMA event container from the attached still image device. */\r
-void SImage_RecieveEventHeader(void)\r
+uint8_t SImage_ReceiveEventHeader(void)\r
 {\r
+       uint8_t ErrorCode;\r
+\r
        /* Unfreeze the events pipe */\r
        Pipe_SelectPipe(SIMAGE_EVENTS_PIPE);\r
        Pipe_Unfreeze();\r
        \r
        /* Read in the event data into the global structure */\r
-       Pipe_Read_Stream_LE(&PIMA_EventBlock, sizeof(PIMA_EventBlock));\r
+       ErrorCode = Pipe_Read_Stream_LE(&PIMA_EventBlock, sizeof(PIMA_EventBlock));\r
        \r
        /* Clear the pipe after read complete to prepare for next event */\r
        Pipe_ClearIN();\r
        \r
        /* Freeze the event pipe again after use */\r
        Pipe_Freeze();\r
+       \r
+       return ErrorCode;\r
 }\r
 \r
 /** Function to receive a PIMA response container from the attached still image device. */\r
-uint8_t SImage_RecieveBlockHeader(void)\r
+uint8_t SImage_ReceiveBlockHeader(void)\r
 {\r
        uint16_t TimeoutMSRem = COMMAND_DATA_TIMEOUT_MS;\r
 \r
@@ -123,45 +126,39 @@ uint8_t SImage_RecieveBlockHeader(void)
                        }\r
                }\r
                \r
+               Pipe_Freeze();\r
                Pipe_SelectPipe(SIMAGE_DATA_OUT_PIPE);\r
+               Pipe_Unfreeze();\r
 \r
                /* Check if pipe stalled (command failed by device) */\r
                if (Pipe_IsStalled())\r
                {\r
                        /* Clear the stall condition on the OUT pipe */\r
-                       SImage_ClearPipeStall(SIMAGE_DATA_OUT_PIPE);\r
+                       USB_Host_ClearPipeStall(SIMAGE_DATA_OUT_PIPE);\r
 \r
                        /* Return error code and break out of the loop */\r
                        return PIPE_RWSTREAM_PipeStalled;\r
                }\r
 \r
+               Pipe_Freeze();\r
                Pipe_SelectPipe(SIMAGE_DATA_IN_PIPE);\r
+               Pipe_Unfreeze();\r
 \r
                /* Check if pipe stalled (command failed by device) */\r
                if (Pipe_IsStalled())\r
                {\r
                        /* Clear the stall condition on the IN pipe */\r
-                       SImage_ClearPipeStall(SIMAGE_DATA_IN_PIPE);\r
+                       USB_Host_ClearPipeStall(SIMAGE_DATA_IN_PIPE);\r
 \r
                        /* Return error code */\r
                        return PIPE_RWSTREAM_PipeStalled;\r
                }\r
                  \r
                /* Check to see if the device was disconnected, if so exit function */\r
-               if (!(USB_IsConnected))\r
-               {\r
-                       /* Return error code */\r
-                       return PIPE_RWSTREAM_DeviceDisconnected;\r
-               }\r
-       };\r
-       \r
-       /* Freeze OUT pipe after use */\r
-       Pipe_SelectPipe(SIMAGE_DATA_OUT_PIPE);\r
-       Pipe_Freeze();\r
-\r
-       /* Select the IN data pipe for data reception */\r
-       Pipe_SelectPipe(SIMAGE_DATA_IN_PIPE);\r
-       \r
+               if (USB_HostState == HOST_STATE_Unattached)\r
+                 return PIPE_RWSTREAM_DeviceDisconnected;\r
+       }\r
+               \r
        /* Load in the response from the attached device */\r
        Pipe_Read_Stream_LE(&PIMA_ReceivedBlock, PIMA_COMMAND_SIZE(0));\r
        \r
@@ -193,20 +190,24 @@ uint8_t SImage_RecieveBlockHeader(void)
  *  \param[in] Buffer  Source data buffer to send to the device\r
  *  \param[in] Bytes   Number of bytes to send\r
  */\r
-void SImage_SendData(void* Buffer, uint16_t Bytes)\r
+uint8_t SImage_SendData(void* Buffer, uint16_t Bytes)\r
 {\r
+       uint8_t ErrorCode;\r
+\r
        /* Unfreeze the data OUT pipe */\r
        Pipe_SelectPipe(SIMAGE_DATA_OUT_PIPE);\r
        Pipe_Unfreeze();\r
        \r
        /* Write the data contents to the pipe */\r
-       Pipe_Write_Stream_LE(Buffer, Bytes);\r
+       ErrorCode = Pipe_Write_Stream_LE(Buffer, Bytes);\r
 \r
        /* Send the last packet to the attached device */\r
        Pipe_ClearOUT();\r
 \r
        /* Freeze the pipe again after use */\r
        Pipe_Freeze();\r
+       \r
+       return ErrorCode;\r
 }\r
 \r
 /** Function to receive the given data to the device, after a response block has been received.\r
@@ -254,26 +255,3 @@ bool SImage_IsEventReceived(void)
        \r
        return IsEventReceived;\r
 }\r
-\r
-/** Clears the stall condition in the attached device on the nominated endpoint number.\r
- *\r
- *  \param[in] EndpointNum  Endpoint number in the attached device whose stall condition is to be cleared\r
- *\r
- *  \return A value from the USB_Host_SendControlErrorCodes_t enum\r
- */\r
-uint8_t SImage_ClearPipeStall(const uint8_t EndpointNum)\r
-{\r
-       USB_ControlRequest = (USB_Request_Header_t)\r
-               {\r
-                       .bmRequestType = (REQDIR_HOSTTODEVICE | REQTYPE_STANDARD | REQREC_ENDPOINT),\r
-                       .bRequest      = REQ_ClearFeature,\r
-                       .wValue        = FEATURE_ENDPOINT_HALT,\r
-                       .wIndex        = EndpointNum,\r
-                       .wLength       = 0,\r
-               };\r
-       \r
-       /* Select the control pipe for the request transfer */\r
-       Pipe_SelectPipe(PIPE_CONTROLPIPE);\r
-\r
-       return USB_Host_SendControlRequest(NULL);\r
-}\r