Add USB HID Gamepad hosting support to mbed board (depends on USBHost library)
Dependents: mbed_gamepad_example
USBHostGamepad.cpp
- Committer:
- abougouffa
- Date:
- 2017-12-20
- Revision:
- 1:b12dbbe77a8a
- Parent:
- 0:5311825d0590
File content as of revision 1:b12dbbe77a8a:
/* 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 "USBHostGamepad.h" #if USBHOST_GAMEPAD USBHostGamepad::USBHostGamepad() { host = USBHost::getHostInst(); init(); } void USBHostGamepad::init() { dev = NULL; int_in = NULL; onUpdate = NULL; report_id = 0; dev_connected = false; gamepad_device_found = false; gamepad_intf = -1; } bool USBHostGamepad::connected() { return dev_connected; } bool USBHostGamepad::connect() { int len_listen; if (dev_connected) { return true; } for (uint8_t i = 0; i < MAX_DEVICE_CONNECTED; i++) { if (dev = host->getDevice(i)) { if(host->enumerate(dev, this)) { break; } if (gamepad_device_found) { { /* As this is done in a specific thread * this lock is taken to avoid to process the device * disconnect in usb process during the device registering */ USBHost::Lock Lock(host); int_in = dev->getEndpoint(gamepad_intf, INTERRUPT_ENDPOINT, IN); if (!int_in) { break; } USB_INFO("New Gamepad device: VID:%04x PID:%04x [dev: %p - intf: %d]", dev->getVid(), dev->getPid(), dev, gamepad_intf); dev->setName("Gamepad", gamepad_intf); host->registerDriver(dev, gamepad_intf, this, &USBHostGamepad::init); int_in->attach(this, &USBHostGamepad::rxHandler); len_listen = int_in->getSize(); if (len_listen > sizeof(report)) { len_listen = sizeof(report); } } int ret=host->interruptRead(dev, int_in, report, len_listen, false); MBED_ASSERT((ret==USB_TYPE_OK) || (ret ==USB_TYPE_PROCESSING) || (ret == USB_TYPE_FREE)); if ((ret==USB_TYPE_OK) || (ret ==USB_TYPE_PROCESSING)) { dev_connected = true; } if (ret == USB_TYPE_FREE) { dev_connected = false; } return true; } } } init(); return false; } void USBHostGamepad::rxHandler() { int len_listen = int_in->getLengthTransferred(); if (len_listen !=0) { uint16_t buttons = 0x0; if (onUpdate) { buttons |= ((report[5] & 0xF0) >> 4) | (report[6] << 4); (*onUpdate)(report[0], report[1], report[3], report[4], buttons); } } /* set again the maximum value */ len_listen = int_in->getSize(); if (len_listen > sizeof(report)) { len_listen = sizeof(report); } if (dev) { host->interruptRead(dev, int_in, report, len_listen, false); } } /*virtual*/ void USBHostGamepad::setVidPid(uint16_t vid, uint16_t pid) { // we don't check VID/PID for Gamepad driver USB_INFO("VID: %X, PID: %X\n\r", vid, pid); } /*virtual*/ bool USBHostGamepad::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 ((gamepad_intf == -1) && (intf_class == HID_CLASS) && (intf_subclass == 0x00) && (intf_protocol == 0x00)) { gamepad_intf = intf_nb; return true; } return false; } /*virtual*/ bool USBHostGamepad::useEndpoint(uint8_t intf_nb, ENDPOINT_TYPE type, ENDPOINT_DIRECTION dir) //Must return true if the endpoint will be used { if (intf_nb == gamepad_intf) { if (type == INTERRUPT_ENDPOINT && dir == IN) { gamepad_device_found = true; return true; } } return false; } #endif