File content as of revision 0:e9fd5575b10e:

/* mbed USBHost Library
 * Copyright (c) 2006-2013 ARM Limited
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include "USBHostMouse.h"

#if USBHOST_MOUSE

USBHostMouse::USBHostMouse() {
    host = USBHost::getHostInst();
#if defined(TARGET_RZ_A2XX)
    report  = (uint8_t *)AllocNonCacheMem(8);
#endif
    init();
}

#if defined(TARGET_RZ_A2XX)
USBHostMouse::~USBHostMouse() {
  FreeNonCacheMem(report);
}
#endif

void USBHostMouse::init() {
    dev = NULL;
    int_in = NULL;
    onUpdate = NULL;
    onButtonUpdate = NULL;
    onXUpdate = NULL;
    onYUpdate = NULL;
    onZUpdate = NULL;
    report_id = 0;
    dev_connected = false;
    mouse_device_found = false;
    mouse_intf = -1;

    buttons = 0;
    x = 0;
    y = 0;
    z = 0;
}

bool USBHostMouse::connected() {
    return dev_connected;
}

bool USBHostMouse::connect() {
    int len_listen;

    if (dev_connected) {
        return true;
    }

    for (uint8_t i = 0; i < MAX_DEVICE_CONNECTED; i++) {
        if ((dev = host->getDevice(i)) != NULL) {

            if(host->enumerate(dev, this))
                break;

            if (mouse_device_found) {

                int_in = dev->getEndpoint(mouse_intf, INTERRUPT_ENDPOINT, IN);
                if (!int_in)
                    break;

                USB_INFO("New Mouse device: VID:%04x PID:%04x [dev: %p - intf: %d]", dev->getVid(), dev->getPid(), dev, mouse_intf);
                dev->setName("Mouse", mouse_intf);
                host->registerDriver(dev, mouse_intf, this, &USBHostMouse::init);

                int_in->attach(this, &USBHostMouse::rxHandler);
                len_listen = int_in->getSize();
#if defined(TARGET_RZ_A2XX)
                if ((uint32_t)len_listen > 8) {
                    len_listen = 8;
                }
#else
                if ((uint32_t)len_listen > sizeof(report)) {
                    len_listen = sizeof(report);
                }
#endif
                host->interruptRead(dev, int_in, report, len_listen, false);

                dev_connected = true;
                return true;
            }
        }
    }
    init();
    return false;
}

void USBHostMouse::rxHandler() {
    int len_listen = int_in->getSize();

    if ((dev->getVid() == 0x046d) && (dev->getPid() == 0xc52b)) {
        int wk_x;
        int wk_y;

        wk_x = ((report[4] & 0x0F) << 8) | report[3];
        if (wk_x <= 0x7ff) {
            if (wk_x > 0x7f) {
                wk_x = 0x7f;
            }
        } else {
            wk_x = -(0xfff - wk_x);
            if (wk_x < -128) {
                wk_x = -128;
            }
        }

        wk_y = (report[5] << 4) | ((report[4] & 0xF0) >> 4);
        if (wk_y <= 0x7ff) {
            if (wk_y > 0x7f) {
                wk_y = 0x7f;
            }
        } else {
            wk_y = -(0xfff - wk_y);
            if (wk_y < -128) {
                wk_y = -128;
            }
        }

        if (onUpdate) {
            (*onUpdate)(report[1] & 0x07, (int8_t)wk_x, (int8_t)wk_y, report[6]);
        }

        if (onButtonUpdate && (buttons != (report[1] & 0x07))) {
            (*onButtonUpdate)(report[1] & 0x07);
        }

        if (onXUpdate && (x != (int8_t)wk_x)) {
            (*onXUpdate)((int8_t)wk_x);
        }

        if (onYUpdate && (y != (int8_t)wk_y)) {
            (*onYUpdate)((int8_t)wk_y);
        }

        if (onZUpdate && (z != report[6])) {
            (*onZUpdate)(report[6]);
        }

        // update mouse state
        buttons = report[1] & 0x07;

        x = (int8_t)wk_x;
        y = (int8_t)wk_y;
        z = report[6];
    } else {
        if (onUpdate) {
            (*onUpdate)(report[0] & 0x07, report[1], report[2], report[3]);
        }

        if (onButtonUpdate && (buttons != (report[0] & 0x07))) {
            (*onButtonUpdate)(report[0] & 0x07);
        }

        if (onXUpdate && (x != report[1])) {
            (*onXUpdate)(report[1]);
        }

        if (onYUpdate && (y != report[2])) {
            (*onYUpdate)(report[2]);
        }

        if (onZUpdate && (z != report[3])) {
            (*onZUpdate)(report[3]);
        }

        // update mouse state
        buttons = report[0] & 0x07;
        x = report[1];
        y = report[2];
        z = report[3];
    }

#if defined(TARGET_RZ_A2XX)
    if ((uint32_t)len_listen > 8) {
        len_listen = 8;
    }
#else
    if ((uint32_t)len_listen > sizeof(report)) {
        len_listen = sizeof(report);
    }
#endif

    if (dev)
        host->interruptRead(dev, int_in, report, len_listen, false);
}

/*virtual*/ void USBHostMouse::setVidPid(uint16_t vid, uint16_t pid)
{
    // we don't check VID/PID for mouse driver
}

/*virtual*/ bool USBHostMouse::parseInterface(uint8_t intf_nb, uint8_t intf_class, uint8_t intf_subclass, uint8_t intf_protocol) //Must return true if the interface should be parsed
{
    if ((mouse_intf == -1) &&
        (intf_class == HID_CLASS) &&
        (intf_subclass == 0x01) &&
        (intf_protocol == 0x02)) {
        mouse_intf = intf_nb;
        return true;
    }
    return false;
}

/*virtual*/ bool USBHostMouse::useEndpoint(uint8_t intf_nb, ENDPOINT_TYPE type, ENDPOINT_DIRECTION dir) //Must return true if the endpoint will be used
{
    if (intf_nb == mouse_intf) {
        if (type == INTERRUPT_ENDPOINT && dir == IN) {
            mouse_device_found = true;
            return true;
        }
    }
    return false;
}

#endif