for (;;)
{
- CDC_Host_Task();
+ CDCHost_Task();
+
USB_USBTask();
}
}
*/
void EVENT_USB_Host_DeviceEnumerationComplete(void)
{
+ puts_P(PSTR("Getting Config Data.\r\n"));
+
+ uint8_t ErrorCode;
+
+ /* Get and process the configuration descriptor data */
+ if ((ErrorCode = ProcessConfigurationDescriptor()) != SuccessfulConfigRead)
+ {
+ if (ErrorCode == ControlError)
+ puts_P(PSTR(ESC_FG_RED "Control Error (Get Configuration).\r\n"));
+ else
+ puts_P(PSTR(ESC_FG_RED "Invalid Device.\r\n"));
+
+ printf_P(PSTR(" -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);
+
+ LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
+ return;
+ }
+
+ /* Set the device configuration to the first configuration (rarely do devices use multiple configurations) */
+ if ((ErrorCode = USB_Host_SetDeviceConfiguration(1)) != HOST_SENDCONTROL_Successful)
+ {
+ printf_P(PSTR(ESC_FG_RED "Control Error (Set Configuration).\r\n"
+ " -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);
+
+ LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
+ return;
+ }
+
+ puts_P(PSTR("CDC Device Enumerated.\r\n"));
LEDs_SetAllLEDs(LEDMASK_USB_READY);
}
LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
}
-/** Task to set the configuration of the attached device after it has been enumerated, and to read in
- * data received from the attached CDC device and print it to the serial port.
+/** Task to read in data received from the attached CDC device and print it to the serial port.
*/
-void CDC_Host_Task(void)
+void CDCHost_Task(void)
{
- uint8_t ErrorCode;
+ if (USB_HostState != HOST_STATE_Configured)
+ return;
+
+ /* Select the data IN pipe */
+ Pipe_SelectPipe(CDC_DATA_IN_PIPE);
+ Pipe_Unfreeze();
+
+ /* Check to see if a packet has been received */
+ if (Pipe_IsINReceived())
+ {
+ /* Re-freeze IN pipe after the packet has been received */
+ Pipe_Freeze();
+
+ /* Check if data is in the pipe */
+ if (Pipe_IsReadWriteAllowed())
+ {
+ /* Get the length of the pipe data, and create a new buffer to hold it */
+ uint16_t BufferLength = Pipe_BytesInPipe();
+ uint8_t Buffer[BufferLength];
+
+ /* Read in the pipe data to the temporary buffer */
+ Pipe_Read_Stream_LE(Buffer, BufferLength, NULL);
+
+ /* Print out the buffer contents to the USART */
+ for (uint16_t BufferByte = 0; BufferByte < BufferLength; BufferByte++)
+ putchar(Buffer[BufferByte]);
+ }
+
+ /* Clear the pipe after it is read, ready for the next packet */
+ Pipe_ClearIN();
+ }
+
+ /* Re-freeze IN pipe after use */
+ Pipe_Freeze();
- switch (USB_HostState)
+ /* Select and unfreeze the notification pipe */
+ Pipe_SelectPipe(CDC_NOTIFICATION_PIPE);
+ Pipe_Unfreeze();
+
+ /* Check if a packet has been received */
+ if (Pipe_IsINReceived())
{
- case HOST_STATE_Addressed:
- puts_P(PSTR("Getting Config Data.\r\n"));
-
- /* Get and process the configuration descriptor data */
- if ((ErrorCode = ProcessConfigurationDescriptor()) != SuccessfulConfigRead)
- {
- if (ErrorCode == ControlError)
- puts_P(PSTR(ESC_FG_RED "Control Error (Get Configuration).\r\n"));
- else
- puts_P(PSTR(ESC_FG_RED "Invalid Device.\r\n"));
-
- printf_P(PSTR(" -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);
-
- /* Indicate error via status LEDs */
- LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
-
- /* Wait until USB device disconnected */
- USB_HostState = HOST_STATE_WaitForDeviceRemoval;
- break;
- }
-
- /* Set the device configuration to the first configuration (rarely do devices use multiple configurations) */
- if ((ErrorCode = USB_Host_SetDeviceConfiguration(1)) != HOST_SENDCONTROL_Successful)
- {
- printf_P(PSTR(ESC_FG_RED "Control Error (Set Configuration).\r\n"
- " -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);
-
- /* Indicate error via status LEDs */
- LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
-
- /* Wait until USB device disconnected */
- USB_HostState = HOST_STATE_WaitForDeviceRemoval;
- break;
- }
-
- puts_P(PSTR("CDC Device Enumerated.\r\n"));
-
- USB_HostState = HOST_STATE_Configured;
- break;
- case HOST_STATE_Configured:
- /* Select the data IN pipe */
- Pipe_SelectPipe(CDC_DATA_IN_PIPE);
- Pipe_Unfreeze();
-
- /* Check to see if a packet has been received */
- if (Pipe_IsINReceived())
- {
- /* Re-freeze IN pipe after the packet has been received */
- Pipe_Freeze();
-
- /* Check if data is in the pipe */
- if (Pipe_IsReadWriteAllowed())
- {
- /* Get the length of the pipe data, and create a new buffer to hold it */
- uint16_t BufferLength = Pipe_BytesInPipe();
- uint8_t Buffer[BufferLength];
-
- /* Read in the pipe data to the temporary buffer */
- Pipe_Read_Stream_LE(Buffer, BufferLength, NULL);
-
- /* Print out the buffer contents to the USART */
- for (uint16_t BufferByte = 0; BufferByte < BufferLength; BufferByte++)
- putchar(Buffer[BufferByte]);
- }
-
- /* Clear the pipe after it is read, ready for the next packet */
- Pipe_ClearIN();
- }
-
- /* Re-freeze IN pipe after use */
- Pipe_Freeze();
-
- /* Select and unfreeze the notification pipe */
- Pipe_SelectPipe(CDC_NOTIFICATION_PIPE);
- Pipe_Unfreeze();
-
- /* Check if a packet has been received */
- if (Pipe_IsINReceived())
- {
- /* Discard the unused event notification */
- Pipe_ClearIN();
- }
-
- /* Freeze notification IN pipe after use */
- Pipe_Freeze();
-
- break;
+ /* Discard the unused event notification */
+ Pipe_ClearIN();
}
+
+ /* Freeze notification IN pipe after use */
+ Pipe_Freeze();
}
projects / pub / USBasp.git / blobdiff