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authorDean Camera <dean@fourwalledcubicle.com>2009-06-18 10:49:19 +0000
committerDean Camera <dean@fourwalledcubicle.com>2009-06-18 10:49:19 +0000
commitd475ea4394ba0e16f89300ebeb452cea7c2d9232 (patch)
treeea1384bcd02bcab9047fb4e9e0a27e24a04511c6 /Projects/MissileLauncher/MissileLauncher.c
parent59e87d4df08cfacf623b70b4ae95bc020cb9c662 (diff)
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Oops - restore deleted MissileLauncher project, fix all spelling errors for "missile". TODO: Learn how to actually spell.
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diff --git a/Projects/MissileLauncher/MissileLauncher.c b/Projects/MissileLauncher/MissileLauncher.c
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+/*
+ LUFA Library
+ Copyright (C) Dean Camera, 2009.
+
+ dean [at] fourwalledcubicle [dot] com
+ www.fourwalledcubicle.com
+*/
+
+/*
+ USB Missile Launcher Demo
+ Copyright (C) Dave Fletcher, 2009.
+ fletch at fletchtronics dot net
+
+ Based on research by Scott Weston at
+ http://code.google.com/p/pymissile
+ */
+
+/*
+ Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com)
+ Copyright 2009 Dave Fletcher (fletch [at] fletchtronics [dot] net)
+
+ Permission to use, copy, modify, and distribute this software
+ and its documentation for any purpose and without fee is hereby
+ granted, 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.
+*/
+
+/*
+ * Missile Launcher host. This is a host driver for the popular USB-controller table top toy missile launchers,
+ * which can typically aim and fire small foam "missiles" from a spring-loaded turret. This project controls the
+ * launcher via a joystick and button to aim and fire missiles at targets without a PC.
+ */
+
+/** \file
+ *
+ * Main source file for the MissileLauncher application. This file contains the main tasks of
+ * the application and is responsible for the initial application hardware configuration as well
+ * as the sending of commands to the attached launcher toy.
+ */
+
+#include "MissileLauncher.h"
+
+/** Launcher first init command report data sequence */
+static const uint8_t CMD_INITA[8] = { 85, 83, 66, 67, 0, 0, 4, 0 };
+
+/** Launcher second init command report data sequence */
+static const uint8_t CMD_INITB[8] = { 85, 83, 66, 67, 0, 64, 2, 0 };
+
+/** Launcher command report data sequence to stop all movement */
+static const uint8_t CMD_STOP[8] = { 0, 0, 0, 0, 0, 0, 8, 8 };
+
+/** Launcher command report data sequence to move left */
+static const uint8_t CMD_LEFT[8] = { 0, 1, 0, 0, 0, 0, 8, 8 };
+
+/** Launcher command report data sequence to move right */
+static const uint8_t CMD_RIGHT[8] = { 0, 0, 1, 0, 0, 0, 8, 8 };
+
+/** Launcher command report data sequence to move up */
+static const uint8_t CMD_UP[8] = { 0, 0, 0, 1, 0, 0, 8, 8 };
+
+/** Launcher command report data sequence to move down */
+static const uint8_t CMD_DOWN[8] = { 0, 0, 0, 0, 1, 0, 8, 8 };
+
+/** Launcher command report data sequence to move left and up */
+static const uint8_t CMD_LEFTUP[8] = { 0, 1, 0, 1, 0, 0, 8, 8 };
+
+/** Launcher command report data sequence to move right and up */
+static const uint8_t CMD_RIGHTUP[8] = { 0, 0, 1, 1, 0, 0, 8, 8 };
+
+/** Launcher command report data sequence to move left and down */
+static const uint8_t CMD_LEFTDOWN[8] = { 0, 1, 0, 0, 1, 0, 8, 8 };
+
+/** Launcher command report data sequence to move right and down */
+static const uint8_t CMD_RIGHTDOWN[8] = { 0, 0, 1, 0, 1, 0, 8, 8 };
+
+/** Launcher command report data sequence to fire a missile */
+static const uint8_t CMD_FIRE[8] = { 0, 0, 0, 0, 0, 1, 8, 8 };
+
+/** Last command sent to the launcher, to determine what new command (if any) must be sent */
+uint8_t* CmdState;
+
+/** Buffer to hold a command to send to the launcher */
+uint8_t CmdBuffer[LAUNCHER_CMD_BUFFER_SIZE];
+
+
+/** Main program entry point. This routine configures the hardware required by the application, then
+ * starts the scheduler to run the application tasks.
+ */
+int main(void)
+{
+ SetupHardware();
+
+ LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+
+ CmdState = CMD_STOP;
+
+ for (;;)
+ {
+ Read_Joystick_Status();
+
+ HID_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 */
+ LEDs_Init();
+ USB_Init();
+ Joystick_Init();
+ Buttons_Init();
+}
+
+/** Reads the joystick and button status, sending commands to the launcher as needed. */
+void Read_Joystick_Status(void)
+{
+ uint8_t JoyStatus_LCL = Joystick_GetStatus();
+
+ if (BUTTONS_BUTTON1 && Buttons_GetStatus())
+ Send_Command(CMD_FIRE);
+ else if (JoyStatus_LCL & JOY_UP)
+ Send_Command(CMD_UP);
+ else if (JoyStatus_LCL & JOY_DOWN)
+ Send_Command(CMD_DOWN);
+ else if (JoyStatus_LCL & JOY_LEFT)
+ Send_Command(CMD_LEFT);
+ else if (JoyStatus_LCL & JOY_RIGHT)
+ Send_Command(CMD_RIGHT);
+ else if (CmdState != CMD_STOP)
+ Send_Command(CMD_STOP);
+}
+
+/** Lower level send routine, copies report into a larger buffer and sends.
+ *
+ * \param Report Report data to send.
+ * \param ReportSize Report length in bytes.
+ */
+void Send_Command_Report(uint8_t *Report, uint16_t ReportSize)
+{
+ memcpy(CmdBuffer, Report, 8);
+ WriteNextReport(CmdBuffer, ReportSize);
+}
+
+/** Send one of the CMD_* command constants listed above.
+ *
+ * \param Command One of the command constants.
+ */
+void Send_Command(uint8_t* Command)
+{
+ if ((CmdState == CMD_STOP && Command != CMD_STOP) ||
+ (CmdState != CMD_STOP && Command == CMD_STOP))
+ {
+ LEDs_ChangeLEDs(LEDS_LED4, ~LEDs_GetLEDs() & LEDS_LED4);
+
+ Send_Command_Report(CMD_INITA, 8);
+ Send_Command_Report(CMD_INITB, 8);
+ Send_Command_Report(Command, LAUNCHER_CMD_BUFFER_SIZE);
+ }
+
+ CmdState = Command;
+}
+
+/** 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_DeviceAttached(void)
+{
+ 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_DeviceUnattached(void)
+{
+ 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_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_HostError(const uint8_t ErrorCode)
+{
+ USB_ShutDown();
+
+ 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_DeviceEnumerationFailed(const uint8_t ErrorCode, const uint8_t SubErrorCode)
+{
+ LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
+}
+
+/** Reads in and discards the next report from the attached device. */
+void DiscardNextReport(void)
+{
+ /* Select and unfreeze HID data IN pipe */
+ Pipe_SelectPipe(HID_DATA_IN_PIPE);
+ Pipe_Unfreeze();
+
+ /* Check to see if a packet has been received */
+ if (!(Pipe_IsINReceived()))
+ {
+ /* Refreeze HID data IN pipe */
+ Pipe_Freeze();
+
+ return;
+ }
+
+ /* Clear the IN endpoint, ready for next data packet */
+ Pipe_ClearIN();
+
+ /* Refreeze HID data IN pipe */
+ Pipe_Freeze();
+}
+
+/** Writes a report to the attached device.
+ *
+ * \param ReportOUTData Buffer containing the report to send to the device
+ * \param ReportLength Length of the report to send
+ */
+void WriteNextReport(uint8_t* ReportOUTData, uint16_t ReportLength)
+{
+ /* Select and unfreeze HID data OUT pipe */
+ Pipe_SelectPipe(HID_DATA_OUT_PIPE);
+
+ /* Not all HID devices have an OUT endpoint (some require OUT reports to be sent over the
+ * control endpoint instead) - check to see if the OUT endpoint has been initialized */
+ if (Pipe_IsConfigured())
+ {
+ Pipe_Unfreeze();
+
+ /* Ensure pipe is ready to be written to before continuing */
+ if (!(Pipe_IsOUTReady()))
+ {
+ /* Refreeze the data OUT pipe */
+ Pipe_Freeze();
+
+ return;
+ }
+
+ /* Write out HID report data */
+ Pipe_Write_Stream_LE(ReportOUTData, ReportLength);
+
+ /* Clear the OUT endpoint, send last data packet */
+ Pipe_ClearOUT();
+
+ /* Refreeze the data OUT pipe */
+ Pipe_Freeze();
+ }
+ else
+ {
+ /* Class specific request to send a HID report to the device */
+ USB_ControlRequest = (USB_Request_Header_t)
+ {
+ .bmRequestType = 0x21,
+ .bRequest = 0x09,
+ .wValue = 0x02,
+ .wIndex = 0x01,
+ .wLength = ReportLength,
+ };
+
+ /* Select the control pipe for the request transfer */
+ Pipe_SelectPipe(PIPE_CONTROLPIPE);
+
+ /* Send the request to the device */
+ USB_Host_SendControlRequest(ReportOUTData);
+ }
+}
+
+/** Task to set the configuration of the attached device after it has been enumerated, and to read and process
+ * HID reports from the device and to send reports if desired.
+ */
+void HID_Host_Task(void)
+{
+ uint8_t ErrorCode;
+
+ /* Switch to determine what user-application handled host state the host state machine is in */
+ switch (USB_HostState)
+ {
+ case HOST_STATE_Addressed:
+ /* Get and process the configuration descriptor data */
+ if ((ErrorCode = ProcessConfigurationDescriptor()) != SuccessfulConfigRead)
+ {
+ /* Indicate error status */
+ LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
+
+ /* Wait until USB device disconnected */
+ while (USB_IsConnected);
+ break;
+ }
+
+ /* Set the device configuration to the first configuration (rarely do devices use multiple configurations) */
+ if ((ErrorCode = USB_Host_SetDeviceConfiguration(1)) != HOST_SENDCONTROL_Successful)
+ {
+ /* Indicate error status */
+ LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
+
+ /* Wait until USB device disconnected */
+ while (USB_IsConnected);
+ break;
+ }
+
+ USB_HostState = HOST_STATE_Configured;
+ break;
+ case HOST_STATE_Configured:
+ USB_HostState = HOST_STATE_Ready;
+ break;
+ case HOST_STATE_Ready:
+ DiscardNextReport();
+
+ break;
+ }
+}