/** Task to manage an enumerated USB printer once connected, to display device * information and print a test PCL page. */ void PrinterHost_Task(void) { if (USB_HostState != HOST_STATE_Configured) return; uint8_t ErrorCode; /* Indicate device busy via the status LEDs */ LEDs_SetAllLEDs(LEDMASK_USB_BUSY); char TestPageData[] = "\033%-12345X\033E" "LUFA PCL Test Page" "\033E\033%-12345X"; uint16_t TestPageLength = strlen(TestPageData); printf_P(PSTR("Sending Test Page (%d bytes)...\r\n"), TestPageLength); /* Send the test page to the attached printer */ if ((ErrorCode = Printer_SendData(&TestPageData, TestPageLength)) != PIPE_RWSTREAM_NoError) { printf_P(PSTR(ESC_FG_RED "Error Sending Test Page.\r\n" " -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode); LEDs_SetAllLEDs(LEDMASK_USB_ERROR); USB_Host_SetDeviceConfiguration(0); return; } puts_P(PSTR("Test Page Sent.\r\n")); /* Indicate device no longer busy */ LEDs_SetAllLEDs(LEDMASK_USB_READY); USB_Host_SetDeviceConfiguration(0); }
/** Task to set the configuration of the attached device after it has been enumerated, and to send some test page * data to the attached printer. */ void USB_Printer_Host(void) { uint8_t ErrorCode; switch (USB_HostState) { case HOST_STATE_Addressed: puts_P(PSTR("Getting Config Data.\r\n")); /* Select the control pipe for the request transfer */ Pipe_SelectPipe(PIPE_CONTROLPIPE); /* 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"), 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; } /* Some printers use alternate settings to determine the communication protocol used - if so, send a SetInterface * request to switch to the interface alternate setting with the Bidirectional protocol */ if (PrinterAltSetting) { USB_ControlRequest = (USB_Request_Header_t) { .bmRequestType = (REQDIR_HOSTTODEVICE | REQTYPE_STANDARD | REQREC_INTERFACE), .bRequest = REQ_SetInterface, .wValue = PrinterAltSetting, .wIndex = PrinterInterfaceNumber, .wLength = 0, }; if ((ErrorCode = USB_Host_SendControlRequest(NULL)) != HOST_SENDCONTROL_Successful) { printf_P(PSTR(ESC_FG_RED "Control Error (Set Interface).\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("Retrieving Device ID...\r\n")); char DeviceIDString[300]; if ((ErrorCode = Printer_GetDeviceID(DeviceIDString, sizeof(DeviceIDString))) != HOST_SENDCONTROL_Successful) { printf_P(PSTR(ESC_FG_RED "Control Error (Get Device ID).\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; } printf_P(PSTR("Printer Device ID: %s\r\n"), DeviceIDString); puts_P(PSTR("Printer Enumerated.\r\n")); USB_HostState = HOST_STATE_Configured; break; case HOST_STATE_Configured: /* Indicate device busy via the status LEDs */ LEDs_SetAllLEDs(LEDMASK_USB_BUSY); char TestPageData[] = "\033%-12345X\033E" "LUFA PCL Test Page" "\033E\033%-12345X"; uint16_t TestPageLength = strlen(TestPageData); printf_P(PSTR("Sending Test Page (%d bytes)...\r\n"), TestPageLength); if ((ErrorCode = Printer_SendData(&TestPageData, TestPageLength)) != PIPE_RWSTREAM_NoError) { printf_P(PSTR(ESC_FG_RED "Error Sending Test Page.\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("Test Page Sent.\r\n")); /* Indicate device no longer busy */ LEDs_SetAllLEDs(LEDMASK_USB_READY); USB_HostState = HOST_STATE_WaitForDeviceRemoval; break; } }