Wim Huiskamp
/
USBJoystick_HelloWorld
USB HID Device that emulates a Gamecontroller
The notebook page for this application is here
Revision 0:5037d4be5b6d, committed 2012-01-07
- Comitter:
- wim
- Date:
- Sat Jan 07 21:03:54 2012 +0000
- Commit message:
- First version
Changed in this revision
diff -r 000000000000 -r 5037d4be5b6d USBDevice.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/USBDevice.lib Sat Jan 07 21:03:54 2012 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/samux/code/USBDevice/#5e24508aa46e
diff -r 000000000000 -r 5037d4be5b6d USBJoystick.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/USBJoystick.cpp Sat Jan 07 21:03:54 2012 +0000 @@ -0,0 +1,168 @@ +/* Copyright (c) 2010-2011 mbed.org, MIT License +* Modified Mouse code for Joystick - WH 2012 +* +* Permission is hereby granted, free of charge, to any person obtaining a copy of this software +* and associated documentation files (the "Software"), to deal in the Software without +* restriction, including without limitation the rights to use, copy, modify, merge, publish, +* distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the +* Software is furnished to do so, subject to the following conditions: +* +* The above copyright notice and this permission notice shall be included in all copies or +* substantial portions of the Software. +* +* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING +* BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND +* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, +* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#include "stdint.h" +#include "USBJoystick.h" + +bool USBJoystick::update(int16_t t, int16_t r, int16_t x, int16_t y, uint8_t button, uint8_t hat) { + HID_REPORT report; + _t = t; + _r = r; + _x = x; + _y = y; + _button = button; + _hat = hat; + + // Fill the report according to the Joystick Descriptor + report.data[0] = _t & 0xff; + report.data[1] = _r & 0xff; + report.data[2] = _x & 0xff; + report.data[3] = _y & 0xff; + report.data[4] = ((_button & 0x0f) << 4) | (_hat & 0x0f) ; + report.length = 5; + + return send(&report); +} + +bool USBJoystick::update() { + HID_REPORT report; + + // Fill the report according to the Joystick Descriptor + report.data[0] = _t & 0xff; + report.data[1] = _r & 0xff; + report.data[2] = _x & 0xff; + report.data[3] = _y & 0xff; + report.data[4] = ((_button & 0x0f) << 4) | (_hat & 0x0f) ; + report.length = 5; + + return send(&report); +} + +bool USBJoystick::throttle(int16_t t) { + _t = t; + return update(); +} + +bool USBJoystick::rudder(int16_t r) { + _r = r; + return update(); +} + +bool USBJoystick::move(int16_t x, int16_t y) { + _x = x; + _y = y; + return update(); +} + +bool USBJoystick::button(uint8_t button) { + _button = button; + return update(); +} + +bool USBJoystick::hat(uint8_t hat) { + _hat = hat; + return update(); +} + + +void USBJoystick::_init() { + + _t = -127; + _r = -127; + _x = 0; + _y = 0; + _button = 0x00; + _hat = 0x00; +} + + +uint8_t * USBJoystick::reportDesc() { + static uint8_t reportDescriptor[] = { + + USAGE_PAGE(1), 0x01, // Generic Desktop + LOGICAL_MINIMUM(1), 0x00, // Logical_Minimum (0) + USAGE(1), 0x04, // Usage (Joystick) + COLLECTION(1), 0x01, // Application + USAGE_PAGE(1), 0x02, // Simulation Controls + USAGE(1), 0xBB, // Throttle + USAGE(1), 0xBA, // Rudder + LOGICAL_MINIMUM(1), 0x81, // -127 + LOGICAL_MAXIMUM(1), 0x7f, // 127 + REPORT_SIZE(1), 0x08, + REPORT_COUNT(1), 0x02, + INPUT(1), 0x02, // Data, Variable, Absolute + USAGE_PAGE(1), 0x01, // Generic Desktop + USAGE(1), 0x01, // Usage (Pointer) + COLLECTION(1), 0x00, // Physical + USAGE(1), 0x30, // X + USAGE(1), 0x31, // Y +// 8 bit values + LOGICAL_MINIMUM(1), 0x81, // -127 + LOGICAL_MAXIMUM(1), 0x7f, // 127 + REPORT_SIZE(1), 0x08, + REPORT_COUNT(1), 0x02, + INPUT(1), 0x02, // Data, Variable, Absolute +// 16 bit values +// LOGICAL_MINIMUM(1), 0x00, // 0 +// LOGICAL_MAXIMUM(2), 0xff, 0x7f, // 32767 +// REPORT_SIZE(1), 0x10, +// REPORT_COUNT(1), 0x02, +// INPUT(1), 0x02, // Data, Variable, Absolute + + END_COLLECTION(0), +// 4 Position Hat Switch +// USAGE(1), 0x39, // Usage (Hat switch) +// LOGICAL_MINIMUM(1), 0x00, // 0 +// LOGICAL_MAXIMUM(1), 0x03, // 3 +// PHYSICAL_MINIMUM(1), 0x00, // Physical_Minimum (0) +// PHYSICAL_MAXIMUM(2), 0x0E, 0x01, // Physical_Maximum (270) +// UNIT(1), 0x14, // Unit (Eng Rot:Angular Pos) +// REPORT_SIZE(1), 0x04, +// REPORT_COUNT(1), 0x01, +// INPUT(1), 0x02, // Data, Variable, Absolute +// 8 Position Hat Switch + USAGE(1), 0x39, // Usage (Hat switch) + LOGICAL_MINIMUM(1), 0x00, // 0 + LOGICAL_MAXIMUM(1), 0x07, // 7 + PHYSICAL_MINIMUM(1), 0x00, // Physical_Minimum (0) + PHYSICAL_MAXIMUM(2), 0x3B, 0x01, // Physical_Maximum (315) + UNIT(1), 0x14, // Unit (Eng Rot:Angular Pos) + REPORT_SIZE(1), 0x04, + REPORT_COUNT(1), 0x01, + INPUT(1), 0x02, // Data, Variable, Absolute +// + USAGE_PAGE(1), 0x09, // Buttons + USAGE_MINIMUM(1), 0x01, // 1 + USAGE_MAXIMUM(1), 0x04, // 4 + LOGICAL_MINIMUM(1), 0x00, // 0 + LOGICAL_MAXIMUM(1), 0x01, // 1 + REPORT_SIZE(1), 0x01, + REPORT_COUNT(1), 0x04, + UNIT_EXPONENT(1), 0x00, // Unit_Exponent (0) + UNIT(1), 0x00, // Unit (None) + INPUT(1), 0x02, // Data, Variable, Absolute + END_COLLECTION(0) + + }; + + reportLength = sizeof(reportDescriptor); + return reportDescriptor; +} + +
diff -r 000000000000 -r 5037d4be5b6d USBJoystick.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/USBJoystick.h Sat Jan 07 21:03:54 2012 +0000 @@ -0,0 +1,210 @@ +/* USBJoystick.h */ +/* USB device example: Joystick*/ +/* Copyright (c) 2011 ARM Limited. All rights reserved. */ +/* Modified Mouse code for Joystick - WH 2012 */ + +#ifndef USBJOYSTICK_H +#define USBJOYSTICK_H + +#include "USBHID.h" + +#define REPORT_ID_JOYSTICK 4 + +/* Common usage */ +enum JOY_BUTTON { + JOY_B0 = 1, + JOY_B1 = 2, + JOY_B2 = 4, + JOY_B3 = 8, +}; + +#if(0) +enum JOY_HAT { + JOY_HAT_UP = 0, + JOY_HAT_RIGHT = 1, + JOY_HAT_DOWN = 2, + JOY_HAT_LEFT = 3, + JOY_HAT_NEUTRAL = 4, +}; +#else +enum JOY_HAT { + JOY_HAT_UP = 0, + JOY_HAT_UP_RIGHT = 1, + JOY_HAT_RIGHT = 2, + JOY_HAT_RIGHT_DOWN = 3, + JOY_HAT_DOWN = 4, + JOY_HAT_DOWN_LEFT = 5, + JOY_HAT_LEFT = 6, + JOY_HAT_LEFT_UP = 7, + JOY_HAT_NEUTRAL = 8, +}; +#endif + +/* X, Y and T limits */ +/* These values do not directly map to screen pixels */ +/* Zero may be interpreted as meaning 'no movement' */ +#define JX_MIN_ABS (-127) /*!< The maximum value that we can move to the left on the x-axis */ +#define JY_MIN_ABS (-127) /*!< The maximum value that we can move up on the y-axis */ +#define JT_MIN_ABS (-127) /*!< The minimum value for the throttle */ +#define JX_MAX_ABS (127) /*!< The maximum value that we can move to the right on the x-axis */ +#define JY_MAX_ABS (127) /*!< The maximum value that we can move down on the y-axis */ +#define JT_MAX_ABS (127) /*!< The maximum value for the throttle */ + +/** + * + * USBJoystick example + * @code + * #include "mbed.h" + * #include "USBJoystick.h" + * + * USBJoystick joystick; + * + * int main(void) + * { + * while (1) + * { + * joystick.move(20, 0); + * wait(0.5); + * } + * } + * + * @endcode + * + * + * @code + * #include "mbed.h" + * #include "USBJoystick.h" + * #include <math.h> + * + * USBJoystick joystick; + * + * int main(void) + * { + * int16_t i = 0; + * int16_t throttle = 0; + * int16_t rudder = 0; + * int16_t x = 0; + * int16_t y = 0; + * int32_t radius = 120; + * int32_t angle = 0; + * int8_t button = 0; + * int8_t hat = 0; + * + * while (1) { + * // Basic Joystick + * throttle = (i >> 8) & 0xFF; // value -127 .. 128 + * rudder = (i >> 8) & 0xFF; // value -127 .. 128 + * button = (i >> 8) & 0x0F; // value 0 .. 15, one bit per button + * hat = (i >> 8) & 0x07; // value 0..7 or 8 for neutral + * i++; + * + * x = cos((double)angle*3.14/180.0)*radius; // value -127 .. 128 + * y = sin((double)angle*3.14/180.0)*radius; // value -127 .. 128 + * angle += 3; + * + * joystick.update(throttle, rudder, x, y, button, hat); + * + * wait(0.001); + * } + * } + * @endcode + */ + + +class USBJoystick: public USBHID { + public: + + /** + * Constructor + * + * @param vendor_id Your vendor_id (default: 0x1234) + * @param product_id Your product_id (default: 0x0002) + * @param product_release Your product_release (default: 0x0001) + */ + USBJoystick(uint16_t vendor_id = 0x1234, uint16_t product_id = 0x0100, uint16_t product_release = 0x0001): + USBHID(0, 0, vendor_id, product_id, product_release, false) + { + _init(); + connect(); + }; + + /** + * Write a state of the mouse + * + * @param t throttle position + * @param r rudder position + * @param x x-axis position + * @param y y-axis position + * @param buttons buttons state + * @param hat hat state 0 (up), 1 (right, 2 (down), 3 (left) or 4 (neutral) + * @returns true if there is no error, false otherwise + */ + bool update(int16_t t, int16_t r, int16_t x, int16_t y, uint8_t buttons, uint8_t hat); + + /** + * Write a state of the mouse + * + * @returns true if there is no error, false otherwise + */ + bool update(); + + /** + * Move the throttle position + * + * @param t throttle position + * @returns true if there is no error, false otherwise + */ + bool throttle(int16_t t); + + /** + * Move the rudder position + * + * @param r rudder position + * @returns true if there is no error, false otherwise + */ + bool rudder(int16_t r); + + /** + * Move the cursor to (x, y) + * + * @param x-axis position + * @param y-axis position + * @returns true if there is no error, false otherwise + */ + bool move(int16_t x, int16_t y); + + /** + * Press one or several buttons + * + * @param button button state + * @returns true if there is no error, false otherwise + */ + bool button(uint8_t button); + + /** + * Press hat + * + * @param hat hat state + * @returns true if there is no error, false otherwise + */ + bool hat(uint8_t hat); + + /* + * To define the report descriptor. Warning: this method has to store the length of the report descriptor in reportLength. + * + * @returns pointer to the report descriptor + */ + virtual uint8_t * reportDesc(); + + private: + int8_t _t; + int8_t _r; + int8_t _x; + int8_t _y; + uint8_t _button; + uint8_t _hat; + + void _init(); +}; + +#endif \ No newline at end of file
diff -r 000000000000 -r 5037d4be5b6d main.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main.cpp Sat Jan 07 21:03:54 2012 +0000 @@ -0,0 +1,65 @@ +#include "mbed.h" +#include "USBMouse.h" +#include "USBJoystick.h" + +//USBMouse mouse; +USBJoystick joystick; + +// Variables for Heartbeat and Status monitoring +DigitalOut myled1(LED1); +DigitalOut myled2(LED2); +DigitalOut myled3(LED3); +DigitalOut heartbeatLED(LED4); + +Ticker heartbeat; +Serial pc(USBTX, USBRX); // tx, rx + +// Heartbeat monitor +void pulse() { + heartbeatLED = !heartbeatLED; +} + +void heartbeat_start() { + heartbeat.attach(&pulse, 0.5); +} + +void heartbeat_stop() { + heartbeat.detach(); +} + + +int main() { + int16_t i = 0; + int16_t throttle = 0; + int16_t rudder = 0; + int16_t x = 0; + int16_t y = 0; + int32_t radius = 120; + int32_t angle = 0; + int8_t button = 0; + int8_t hat = 0; + + pc.printf("Hello World!\n\r"); + + heartbeat_start(); + + while (1) { + // Basic Joystick + throttle = (i >> 8) & 0xFF; // value -127 .. 128 + rudder = (i >> 8) & 0xFF; // value -127 .. 128 + button = (i >> 8) & 0x0F; // value 0 .. 15, one bit per button +// hat = (i >> 8) & 0x03; // value 0, 1, 2, 3 or 4 for neutral + hat = (i >> 8) & 0x07; // value 0..7 or 8 for neutral + i++; + + x = cos((double)angle*3.14/180.0)*radius; // value -127 .. 128 + y = sin((double)angle*3.14/180.0)*radius; // value -127 .. 128 + angle += 3; + + joystick.update(throttle, rudder, x, y, button, hat); + + wait(0.001); + } + + pc.printf("Bye World!\n\r"); +} \ No newline at end of file
diff -r 000000000000 -r 5037d4be5b6d mbed.bld --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Sat Jan 07 21:03:54 2012 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/7110ebee3484