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Diffstat (limited to 'Demos/Host/Incomplete/AndroidAccessoryHost/AndroidAccessoryHost.c')
-rw-r--r-- | Demos/Host/Incomplete/AndroidAccessoryHost/AndroidAccessoryHost.c | 267 |
1 files changed, 267 insertions, 0 deletions
diff --git a/Demos/Host/Incomplete/AndroidAccessoryHost/AndroidAccessoryHost.c b/Demos/Host/Incomplete/AndroidAccessoryHost/AndroidAccessoryHost.c new file mode 100644 index 000000000..0c15b8acf --- /dev/null +++ b/Demos/Host/Incomplete/AndroidAccessoryHost/AndroidAccessoryHost.c @@ -0,0 +1,267 @@ +/*
+ LUFA Library
+ Copyright (C) Dean Camera, 2011.
+
+ dean [at] fourwalledcubicle [dot] com
+ www.lufa-lib.org
+*/
+
+/*
+ Copyright 2011 Dean Camera (dean [at] fourwalledcubicle [dot] com)
+
+ Permission to use, copy, modify, distribute, and sell this
+ software and its documentation for any purpose is hereby granted
+ without fee, provided that the above copyright notice appear in
+ all copies and that both that the copyright notice and this
+ permission notice and warranty disclaimer appear in supporting
+ documentation, and that the name of the author not be used in
+ advertising or publicity pertaining to distribution of the
+ software without specific, written prior permission.
+
+ The author disclaim all warranties with regard to this
+ software, including all implied warranties of merchantability
+ and fitness. In no event shall the author be liable for any
+ special, indirect or consequential damages or any damages
+ whatsoever resulting from loss of use, data or profits, whether
+ in an action of contract, negligence or other tortious action,
+ arising out of or in connection with the use or performance of
+ this software.
+*/
+
+/** \file
+ *
+ * Main source file for the AndroidAccessoryHost demo. This file contains the main tasks
+ * of the demo and is responsible for the initial application hardware configuration.
+ */
+
+#include "AndroidAccessoryHost.h"
+
+/** Main program entry point. This routine configures the hardware required by the application, then
+ * enters a loop to run the application tasks in sequence.
+ */
+int main(void)
+{
+ SetupHardware();
+
+ puts_P(PSTR(ESC_FG_CYAN "Android Accessory Host Demo running.\r\n" ESC_FG_WHITE));
+
+ LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+ sei();
+
+ for (;;)
+ {
+ Android_Host_Task();
+ USB_USBTask();
+ }
+}
+
+/** Configures the board hardware and chip peripherals for the demo's functionality. */
+void SetupHardware(void)
+{
+ /* Disable watchdog if enabled by bootloader/fuses */
+ MCUSR &= ~(1 << WDRF);
+ wdt_disable();
+
+ /* Disable clock division */
+ clock_prescale_set(clock_div_1);
+
+ /* Hardware Initialization */
+ Serial_Init(9600, false);
+ LEDs_Init();
+ USB_Init();
+
+ /* Create a stdio stream for the serial port for stdin and stdout */
+ Serial_CreateStream(NULL);
+}
+
+/** Event handler for the USB_DeviceAttached event. This indicates that a device has been attached to the host, and
+ * starts the library USB task to begin the enumeration and USB management process.
+ */
+void EVENT_USB_Host_DeviceAttached(void)
+{
+ puts_P(PSTR(ESC_FG_GREEN "Device Attached.\r\n" ESC_FG_WHITE));
+ LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
+}
+
+/** Event handler for the USB_DeviceUnattached event. This indicates that a device has been removed from the host, and
+ * stops the library USB task management process.
+ */
+void EVENT_USB_Host_DeviceUnattached(void)
+{
+ puts_P(PSTR(ESC_FG_GREEN "\r\nDevice Unattached.\r\n" ESC_FG_WHITE));
+ LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+}
+
+/** Event handler for the USB_DeviceEnumerationComplete event. This indicates that a device has been successfully
+ * enumerated by the host and is now ready to be used by the application.
+ */
+void EVENT_USB_Host_DeviceEnumerationComplete(void)
+{
+ LEDs_SetAllLEDs(LEDMASK_USB_READY);
+}
+
+/** Event handler for the USB_HostError event. This indicates that a hardware error occurred while in host mode. */
+void EVENT_USB_Host_HostError(const uint8_t ErrorCode)
+{
+ USB_Disable();
+
+ printf_P(PSTR(ESC_FG_RED "Host Mode Error\r\n"
+ " -- Error Code %d\r\n" ESC_FG_WHITE), ErrorCode);
+
+ LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
+ for(;;);
+}
+
+/** Event handler for the USB_DeviceEnumerationFailed event. This indicates that a problem occurred while
+ * enumerating an attached USB device.
+ */
+void EVENT_USB_Host_DeviceEnumerationFailed(const uint8_t ErrorCode,
+ const uint8_t SubErrorCode)
+{
+ printf_P(PSTR(ESC_FG_RED "Dev Enum Error\r\n"
+ " -- Error Code %d\r\n"
+ " -- Sub Error Code %d\r\n"
+ " -- In State %d\r\n" ESC_FG_WHITE), ErrorCode, SubErrorCode, USB_HostState);
+
+ LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
+}
+
+/** Task to set the configuration of the attached device after it has been enumerated. */
+void Android_Host_Task(void)
+{
+ uint8_t ErrorCode;
+
+ switch (USB_HostState)
+ {
+ case HOST_STATE_Addressed:
+ puts_P(PSTR("Getting Device Data.\r\n"));
+
+ /* Get and process the configuration descriptor data */
+ ErrorCode = ProcessDeviceDescriptor();
+
+ /* Save whether the Android device needs to be mode-switched later on */
+ bool RequiresModeSwitch = (ErrorCode == NonAccessoryModeAndroidDevice);
+
+ /* Error out if the device is not an Android device or an error ocurred */
+ if ((ErrorCode != AccessoryModeAndroidDevice) && !(RequiresModeSwitch))
+ {
+ if (ErrorCode == DevControlError)
+ puts_P(PSTR(ESC_FG_RED "Control Error (Get Device).\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(LEDS_LED1);
+
+ /* Wait until USB device disconnected */
+ USB_HostState = HOST_STATE_WaitForDeviceRemoval;
+ break;
+ }
+
+ printf_P(PSTR("Android Device Detected - %sAccessory mode.\r\n"), (RequiresModeSwitch ? "Non-" : ""));
+
+ /* 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(LEDS_LED1);
+
+ /* Wait until USB device disconnected */
+ USB_HostState = HOST_STATE_WaitForDeviceRemoval;
+ break;
+ }
+
+ /* Check if a valid Android device was attached, but it is not current in Accessory mode */
+ if (RequiresModeSwitch)
+ {
+ USB_ControlRequest = (USB_Request_Header_t)
+ {
+ .bmRequestType = (REQDIR_HOSTTODEVICE | REQTYPE_VENDOR | REQREC_DEVICE),
+ .bRequest = ANDROID_Req_StartAccessoryMode,
+ .wValue = 0,
+ .wIndex = 0,
+ .wLength = 0,
+ };
+
+ /* Send the control request for the Android device to switch to accessory mode */
+ Pipe_SelectPipe(PIPE_CONTROLPIPE);
+ USB_Host_SendControlRequest(NULL);
+
+ /* Wait until USB device disconnected */
+ USB_HostState = HOST_STATE_WaitForDeviceRemoval;
+ break;
+ }
+
+ 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(LEDS_LED1);
+
+ /* Wait until USB device disconnected */
+ USB_HostState = HOST_STATE_WaitForDeviceRemoval;
+ break;
+ }
+
+ puts_P(PSTR("Accessory Mode Android Enumerated.\r\n"));
+
+ USB_HostState = HOST_STATE_Configured;
+ break;
+ case HOST_STATE_Configured:
+ /* Select the data IN pipe */
+ Pipe_SelectPipe(ANDROID_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())
+ {
+ uint8_t NextReceivedByte = Pipe_BytesInPipe();
+ uint8_t LEDMask = LEDS_NO_LEDS;
+
+ if (NextReceivedByte & 0x01)
+ LEDMask |= LEDS_LED1;
+
+ if (NextReceivedByte & 0x02)
+ LEDMask |= LEDS_LED2;
+
+ if (NextReceivedByte & 0x04)
+ LEDMask |= LEDS_LED3;
+
+ if (NextReceivedByte & 0x08)
+ LEDMask |= LEDS_LED4;
+
+ LEDs_SetAllLEDs(LEDMask);
+ }
+ else
+ {
+ /* Clear the pipe after all data in the packet has been read, ready for the next packet */
+ Pipe_ClearIN();
+ }
+ }
+
+ /* Re-freeze IN pipe after use */
+ Pipe_Freeze();
+ break;
+ }
+}
+
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