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en:projects:crazy_mouse [2010/03/14 16:46] – mikk.leinien:projects:crazy_mouse [2020/07/20 12:00] (current) – external edit 127.0.0.1
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 +====== Crazy USB mouse ======
 +
 +//Requirements: [HW] [[en:hardware:avr-can:controller]]//
 +
 +[{{  :images:projects:crazy_mouse:crazy_mouse_windows_cursor.png|Mouse cursor moving round}}]
 +
 +ARM-CAN USB mouse demo project. Software is based on TI StellarisWare USB library. When attaching the ARM-CAN controller board to the PC, it acts as a standard USB HID mouse. Fixed-point sine calculation functions are used to move cursor around. Push-button on the controller board acts as a left button.
 +
 +~~CL~~
 +
 +===== crazy_mouse.c =====
 +
 +<code c>
 +//*****************************************************************************
 +//
 +// Crazy USB mouse.
 +//
 +// Copyright (c) 2009 TUT Department of Mechatronics
 +//
 +//*****************************************************************************
 +
 +#include <inc/hw_ints.h>
 +#include <inc/hw_types.h>
 +#include <driverlib/sysctl.h>
 +#include <driverlib/interrupt.h>
 +#include <driverlib/usb.h>
 +#include <usblib/usblib.h>
 +#include <usblib/usbhid.h>
 +#include <usblib/usb-ids.h>
 +#include <usblib/device/usbdevice.h>
 +#include <usblib/device/usbdhid.h>
 +#include <usblib/device/usbdhidmouse.h>
 +#include <drivers/general.h>
 +#include <utils/sine.h>
 +#include "usb_mouse_structs.h"
 +
 +//*****************************************************************************
 +//
 +// Global variables.
 +//
 +//*****************************************************************************
 +volatile tBoolean g_bConnected;
 +volatile tBoolean g_bCanSend;
 +
 +//*****************************************************************************
 +//
 +// Mouse handler.
 +//
 +//*****************************************************************************
 +unsigned long MouseHandler(void *pvCBData, unsigned long ulEvent,
 +                           unsigned long ulMsgData, void *pvMsgData)
 +{
 +    switch (ulEvent)
 +    {
 +        //
 +        // The USB host has connected to and configured the device.
 +        //
 +        case USB_EVENT_CONNECTED:
 +        {            
 +            g_bConnected = true;
 + g_bCanSend = true;
 +            break;
 +        }
 +
 +        //
 +        // The USB host has disconnected from the device.
 +        //
 +        case USB_EVENT_DISCONNECTED:
 +        {         
 +            g_bConnected = false;         
 + g_bCanSend = false;
 +            break;
 +        }
 +
 +        //
 +        // A report was sent to the host.
 +        //
 +        case USB_EVENT_TX_COMPLETE:
 +        {            
 + g_bCanSend = true;
 +            break;
 +        }
 +
 +    }
 +    return(0);
 +}
 +
 +//*****************************************************************************
 +//
 +// Main function.
 +//
 +//*****************************************************************************
 +int main(void)
 +{
 + unsigned long ulAngle = 0;
 + char cDeltaX = 0, cDeltaY = 0;
 +
 + //
 + // Set the clocking to run from the PLL at 50MHz
 + //
 + SysCtlClockSet(SYSCTL_SYSDIV_4 | SYSCTL_USE_PLL | SYSCTL_OSC_MAIN |
 + SYSCTL_XTAL_8MHZ);
 +
 + //
 + // Drivers configuring.
 + //
 + DeviceConfigure();
 +
 + //
 + // Pass the USB library our device information, initialize the USB
 + // controller and connect the device to the bus.
 + //
 + USBDHIDMouseInit(0, (tUSBDHIDMouseDevice *)&g_sMouseDevice);
 +
 + //
 + // Enable processor interrupts.
 + //
 + IntMasterEnable();
 +
 + //
 + // Loop forever.
 + //
 + while (true)
 + {
 + //
 + // Device connected and ready ?
 + //
 + if (g_bConnected && g_bCanSend)
 + {
 + //
 + // Rotate by 1 / 256 of full circle.
 + //
 + ulAngle += 0x1000000;
 +
 + //
 + // Calculate X and Y movement.
 + // Use sine function with fixed point numbers.
 + //
 + cDeltaX = sine(ulAngle) >> 14;
 + cDeltaY = sine(ulAngle - 0x40000000) >> 14;
 +
 + //
 + // Keep a small break.
 + //
 + DelayMS(5);
 +
 + //
 + // Update mouse state.
 + //
 + USBDHIDMouseStateChange((void *)&g_sMouseDevice,
 + cDeltaX, cDeltaY,
 + (ButtonIsPressed() ? MOUSE_REPORT_BUTTON_1 : 0));
 + }
 + }
 +}
 +</code>
 +
 +===== usb_mouse_struct.h =====
 +
 +<code c>
 +//*****************************************************************************
 +//
 +// usb_mouse_structs.h - Data structures defining the mouse USB device.
 +//
 +//*****************************************************************************
 +
 +#ifndef _USB_MOUSE_STRUCTS_H_
 +#define _USB_MOUSE_STRUCTS_H_
 +//*****************************************************************************
 +//
 +// Application event handlers.
 +//
 +//*****************************************************************************
 +extern unsigned long MouseHandler(void *pvCBData,
 +                                  unsigned long ulEvent,
 +                                  unsigned long ulMsgData,
 +                                  void *pvMsgData);
 +
 +extern const tUSBDHIDMouseDevice g_sMouseDevice;
 +
 +#endif
 +</code>
 +
 +===== usb_mouse_struct.c =====
 +
 +<code c>
 +//*****************************************************************************
 +//
 +// usb_mouse_structs.c - Data structures defining the USB mouse device.
 +//
 +//*****************************************************************************
 +
 +#include "inc/hw_types.h"
 +#include "driverlib/usb.h"
 +#include "usblib/usblib.h"
 +#include "usblib/usbhid.h"
 +#include "usblib/usb-ids.h"
 +#include "usblib/device/usbdevice.h"
 +#include "usblib/device/usbdhid.h"
 +#include "usblib/device/usbdhidmouse.h"
 +#include "usb_mouse_structs.h"
 +
 +//*****************************************************************************
 +//
 +// The languages supported by this device.
 +//
 +//*****************************************************************************
 +const unsigned char g_pLangDescriptor[] =
 +{
 +    4,
 +    USB_DTYPE_STRING,
 +    USBShort(USB_LANG_EN_US)
 +};
 +
 +//*****************************************************************************
 +//
 +// The manufacturer string.
 +//
 +//*****************************************************************************
 +const unsigned char g_pManufacturerString[] =
 +{
 +    (30 + 1) * 2,
 +    USB_DTYPE_STRING,
 +    'T', 0, 'U', 0, 'T', 0, ' ', 0, 'D', 0, 'e', 0, 'p', 0, 'a', 0,
 + 'r', 0, 't', 0, 'm', 0, 'e', 0, 'n', 0, 't', 0, ' ', 0, 'o', 0,
 + 'f', 0, ' ', 0, 'm', 0, 'e', 0, 'c', 0, 'h', 0, 'a', 0, 't', 0,
 + 'r', 0, 'o', 0, 'n', 0, 'i', 0, 'c', 0, 's', 0
 +};
 +
 +//*****************************************************************************
 +//
 +// The product string.
 +//
 +//*****************************************************************************
 +const unsigned char g_pProductString[] =
 +{
 +    (11 + 1) * 2,
 +    USB_DTYPE_STRING,
 +    'C', 0, 'r', 0, 'a', 0, 'z', 0, 'y', 0, ' ', 0, 'M', 0, 'o', 0, 'u', 0,
 +    's', 0, 'e', 0
 +};
 +
 +//*****************************************************************************
 +//
 +// The serial number string.
 +//
 +//*****************************************************************************
 +const unsigned char g_pSerialNumberString[] =
 +{
 +    (8 + 1) * 2,
 +    USB_DTYPE_STRING,
 +    'F', 0, 'F', 0, 'F', 0, 'F', 0, 'F', 0, 'F', 0, 'F', 0, 'F', 0
 +};
 +
 +//*****************************************************************************
 +//
 +// The interface description string.
 +//
 +//*****************************************************************************
 +const unsigned char g_pHIDInterfaceString[] =
 +{
 +    (19 + 1) * 2,
 +    USB_DTYPE_STRING,
 +    'H', 0, 'I', 0, 'D', 0, ' ', 0, 'M', 0, 'o', 0, 'u', 0, 's', 0,
 +    'e', 0, ' ', 0, 'I', 0, 'n', 0, 't', 0, 'e', 0, 'r', 0, 'f', 0,
 +    'a', 0, 'c', 0, 'e', 0
 +};
 +
 +//*****************************************************************************
 +//
 +// The configuration description string.
 +//
 +//*****************************************************************************
 +const unsigned char g_pConfigString[] =
 +{
 +    (23 + 1) * 2,
 +    USB_DTYPE_STRING,
 +    'H', 0, 'I', 0, 'D', 0, ' ', 0, 'M', 0, 'o', 0, 'u', 0, 's', 0,
 +    'e', 0, ' ', 0, 'C', 0, 'o', 0, 'n', 0, 'f', 0, 'i', 0, 'g', 0,
 +    'u', 0, 'r', 0, 'a', 0, 't', 0, 'i', 0, 'o', 0, 'n', 0
 +};
 +
 +//*****************************************************************************
 +//
 +// The descriptor string table.
 +//
 +//*****************************************************************************
 +const unsigned char * const g_pStringDescriptors[] =
 +{
 +    g_pLangDescriptor,
 +    g_pManufacturerString,
 +    g_pProductString,
 +    g_pSerialNumberString,
 +    g_pHIDInterfaceString,
 +    g_pConfigString
 +};
 +
 +#define NUM_STRING_DESCRIPTORS (sizeof(g_pStringDescriptors) /                \
 +                                sizeof(unsigned char *))
 +
 +//*****************************************************************************
 +//
 +// The HID mouse device initialization and customization structures.
 +//
 +//*****************************************************************************
 +tHIDMouseInstance g_sMouseInstance;
 +
 +const tUSBDHIDMouseDevice g_sMouseDevice =
 +{
 +    USB_VID_LUMINARY,
 +    USB_PID_MOUSE,
 +    500,
 +    USB_CONF_ATTR_SELF_PWR,
 +    MouseHandler,
 +    (void *)&g_sMouseDevice,
 +    g_pStringDescriptors,
 +    NUM_STRING_DESCRIPTORS,
 +    &g_sMouseInstance
 +};
 +</code>
  
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