Add USB HID Gamepad hosting support to mbed board (depends on USBHost library)
Dependents: mbed_gamepad_example
USBHostGamepad.cpp@0:5311825d0590, 2017-12-20 (annotated)
- Committer:
- abougouffa
- Date:
- Wed Dec 20 11:14:43 2017 +0000
- Revision:
- 0:5311825d0590
USBHostGamepad Library
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
abougouffa | 0:5311825d0590 | 1 | /* mbed USBHost Library |
abougouffa | 0:5311825d0590 | 2 | * Copyright (c) 2006-2013 ARM Limited |
abougouffa | 0:5311825d0590 | 3 | * |
abougouffa | 0:5311825d0590 | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
abougouffa | 0:5311825d0590 | 5 | * you may not use this file except in compliance with the License. |
abougouffa | 0:5311825d0590 | 6 | * You may obtain a copy of the License at |
abougouffa | 0:5311825d0590 | 7 | * |
abougouffa | 0:5311825d0590 | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
abougouffa | 0:5311825d0590 | 9 | * |
abougouffa | 0:5311825d0590 | 10 | * Unless required by applicable law or agreed to in writing, software |
abougouffa | 0:5311825d0590 | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
abougouffa | 0:5311825d0590 | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
abougouffa | 0:5311825d0590 | 13 | * See the License for the specific language governing permissions and |
abougouffa | 0:5311825d0590 | 14 | * limitations under the License. |
abougouffa | 0:5311825d0590 | 15 | */ |
abougouffa | 0:5311825d0590 | 16 | |
abougouffa | 0:5311825d0590 | 17 | #include "USBHostGamepad.h" |
abougouffa | 0:5311825d0590 | 18 | |
abougouffa | 0:5311825d0590 | 19 | #if USBHOST_GAMEPAD |
abougouffa | 0:5311825d0590 | 20 | |
abougouffa | 0:5311825d0590 | 21 | USBHostGamepad::USBHostGamepad() |
abougouffa | 0:5311825d0590 | 22 | { |
abougouffa | 0:5311825d0590 | 23 | host = USBHost::getHostInst(); |
abougouffa | 0:5311825d0590 | 24 | init(); |
abougouffa | 0:5311825d0590 | 25 | } |
abougouffa | 0:5311825d0590 | 26 | |
abougouffa | 0:5311825d0590 | 27 | void USBHostGamepad::init() |
abougouffa | 0:5311825d0590 | 28 | { |
abougouffa | 0:5311825d0590 | 29 | dev = NULL; |
abougouffa | 0:5311825d0590 | 30 | int_in = NULL; |
abougouffa | 0:5311825d0590 | 31 | onUpdate = NULL; |
abougouffa | 0:5311825d0590 | 32 | report_id = 0; |
abougouffa | 0:5311825d0590 | 33 | dev_connected = false; |
abougouffa | 0:5311825d0590 | 34 | gamepad_device_found = false; |
abougouffa | 0:5311825d0590 | 35 | gamepad_intf = -1; |
abougouffa | 0:5311825d0590 | 36 | } |
abougouffa | 0:5311825d0590 | 37 | |
abougouffa | 0:5311825d0590 | 38 | bool USBHostGamepad::connected() { |
abougouffa | 0:5311825d0590 | 39 | return dev_connected; |
abougouffa | 0:5311825d0590 | 40 | } |
abougouffa | 0:5311825d0590 | 41 | |
abougouffa | 0:5311825d0590 | 42 | bool USBHostGamepad::connect() |
abougouffa | 0:5311825d0590 | 43 | { |
abougouffa | 0:5311825d0590 | 44 | int len_listen; |
abougouffa | 0:5311825d0590 | 45 | |
abougouffa | 0:5311825d0590 | 46 | if (dev_connected) { |
abougouffa | 0:5311825d0590 | 47 | return true; |
abougouffa | 0:5311825d0590 | 48 | } |
abougouffa | 0:5311825d0590 | 49 | |
abougouffa | 0:5311825d0590 | 50 | for (uint8_t i = 0; i < MAX_DEVICE_CONNECTED; i++) { |
abougouffa | 0:5311825d0590 | 51 | |
abougouffa | 0:5311825d0590 | 52 | if (dev = host->getDevice(i)) { |
abougouffa | 0:5311825d0590 | 53 | if(host->enumerate(dev, this)) { |
abougouffa | 0:5311825d0590 | 54 | break; |
abougouffa | 0:5311825d0590 | 55 | } |
abougouffa | 0:5311825d0590 | 56 | if (gamepad_device_found) { |
abougouffa | 0:5311825d0590 | 57 | { |
abougouffa | 0:5311825d0590 | 58 | /* As this is done in a specific thread |
abougouffa | 0:5311825d0590 | 59 | * this lock is taken to avoid to process the device |
abougouffa | 0:5311825d0590 | 60 | * disconnect in usb process during the device registering */ |
abougouffa | 0:5311825d0590 | 61 | USBHost::Lock Lock(host); |
abougouffa | 0:5311825d0590 | 62 | |
abougouffa | 0:5311825d0590 | 63 | int_in = dev->getEndpoint(gamepad_intf, INTERRUPT_ENDPOINT, IN); |
abougouffa | 0:5311825d0590 | 64 | if (!int_in) { |
abougouffa | 0:5311825d0590 | 65 | break; |
abougouffa | 0:5311825d0590 | 66 | } |
abougouffa | 0:5311825d0590 | 67 | |
abougouffa | 0:5311825d0590 | 68 | USB_INFO("New Gamepad device: VID:%04x PID:%04x [dev: %p - intf: %d]", dev->getVid(), dev->getPid(), dev, gamepad_intf); |
abougouffa | 0:5311825d0590 | 69 | dev->setName("Gamepad", gamepad_intf); |
abougouffa | 0:5311825d0590 | 70 | host->registerDriver(dev, gamepad_intf, this, &USBHostGamepad::init); |
abougouffa | 0:5311825d0590 | 71 | |
abougouffa | 0:5311825d0590 | 72 | int_in->attach(this, &USBHostGamepad::rxHandler); |
abougouffa | 0:5311825d0590 | 73 | len_listen = int_in->getSize(); |
abougouffa | 0:5311825d0590 | 74 | if (len_listen > sizeof(report)) { |
abougouffa | 0:5311825d0590 | 75 | len_listen = sizeof(report); |
abougouffa | 0:5311825d0590 | 76 | } |
abougouffa | 0:5311825d0590 | 77 | } |
abougouffa | 0:5311825d0590 | 78 | int ret=host->interruptRead(dev, int_in, report, len_listen, false); |
abougouffa | 0:5311825d0590 | 79 | MBED_ASSERT((ret==USB_TYPE_OK) || (ret ==USB_TYPE_PROCESSING) || (ret == USB_TYPE_FREE)); |
abougouffa | 0:5311825d0590 | 80 | if ((ret==USB_TYPE_OK) || (ret ==USB_TYPE_PROCESSING)) { |
abougouffa | 0:5311825d0590 | 81 | dev_connected = true; |
abougouffa | 0:5311825d0590 | 82 | } |
abougouffa | 0:5311825d0590 | 83 | if (ret == USB_TYPE_FREE) { |
abougouffa | 0:5311825d0590 | 84 | dev_connected = false; |
abougouffa | 0:5311825d0590 | 85 | } |
abougouffa | 0:5311825d0590 | 86 | return true; |
abougouffa | 0:5311825d0590 | 87 | } |
abougouffa | 0:5311825d0590 | 88 | } |
abougouffa | 0:5311825d0590 | 89 | } |
abougouffa | 0:5311825d0590 | 90 | init(); |
abougouffa | 0:5311825d0590 | 91 | return false; |
abougouffa | 0:5311825d0590 | 92 | } |
abougouffa | 0:5311825d0590 | 93 | |
abougouffa | 0:5311825d0590 | 94 | void USBHostGamepad::rxHandler() |
abougouffa | 0:5311825d0590 | 95 | { |
abougouffa | 0:5311825d0590 | 96 | int len_listen = int_in->getLengthTransferred(); |
abougouffa | 0:5311825d0590 | 97 | |
abougouffa | 0:5311825d0590 | 98 | if (len_listen !=0) { |
abougouffa | 0:5311825d0590 | 99 | uint16_t buttons = 0x0; |
abougouffa | 0:5311825d0590 | 100 | if (onUpdate) { |
abougouffa | 0:5311825d0590 | 101 | buttons |= ((report[5] & 0xF0) >> 4) | (report[6] << 4); |
abougouffa | 0:5311825d0590 | 102 | (*onUpdate)(report[0], report[1], report[3], report[4], buttons); |
abougouffa | 0:5311825d0590 | 103 | } |
abougouffa | 0:5311825d0590 | 104 | } |
abougouffa | 0:5311825d0590 | 105 | |
abougouffa | 0:5311825d0590 | 106 | /* set again the maximum value */ |
abougouffa | 0:5311825d0590 | 107 | len_listen = int_in->getSize(); |
abougouffa | 0:5311825d0590 | 108 | |
abougouffa | 0:5311825d0590 | 109 | if (len_listen > sizeof(report)) { |
abougouffa | 0:5311825d0590 | 110 | len_listen = sizeof(report); |
abougouffa | 0:5311825d0590 | 111 | } |
abougouffa | 0:5311825d0590 | 112 | |
abougouffa | 0:5311825d0590 | 113 | if (dev) { |
abougouffa | 0:5311825d0590 | 114 | host->interruptRead(dev, int_in, report, len_listen, false); |
abougouffa | 0:5311825d0590 | 115 | } |
abougouffa | 0:5311825d0590 | 116 | } |
abougouffa | 0:5311825d0590 | 117 | |
abougouffa | 0:5311825d0590 | 118 | /*virtual*/ void USBHostGamepad::setVidPid(uint16_t vid, uint16_t pid) |
abougouffa | 0:5311825d0590 | 119 | { |
abougouffa | 0:5311825d0590 | 120 | // we don't check VID/PID for Gamepad driver |
abougouffa | 0:5311825d0590 | 121 | USB_INFO("VID: %X, PID: %X\n\r", vid, pid); |
abougouffa | 0:5311825d0590 | 122 | } |
abougouffa | 0:5311825d0590 | 123 | |
abougouffa | 0:5311825d0590 | 124 | /*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 |
abougouffa | 0:5311825d0590 | 125 | { |
abougouffa | 0:5311825d0590 | 126 | if ((gamepad_intf == -1) && |
abougouffa | 0:5311825d0590 | 127 | (intf_class == HID_CLASS) && |
abougouffa | 0:5311825d0590 | 128 | (intf_subclass == 0x00) && |
abougouffa | 0:5311825d0590 | 129 | (intf_protocol == 0x00)) { |
abougouffa | 0:5311825d0590 | 130 | gamepad_intf = intf_nb; |
abougouffa | 0:5311825d0590 | 131 | return true; |
abougouffa | 0:5311825d0590 | 132 | } |
abougouffa | 0:5311825d0590 | 133 | return false; |
abougouffa | 0:5311825d0590 | 134 | } |
abougouffa | 0:5311825d0590 | 135 | |
abougouffa | 0:5311825d0590 | 136 | /*virtual*/ bool USBHostGamepad::useEndpoint(uint8_t intf_nb, ENDPOINT_TYPE type, ENDPOINT_DIRECTION dir) //Must return true if the endpoint will be used |
abougouffa | 0:5311825d0590 | 137 | { |
abougouffa | 0:5311825d0590 | 138 | if (intf_nb == gamepad_intf) { |
abougouffa | 0:5311825d0590 | 139 | if (type == INTERRUPT_ENDPOINT && dir == IN) { |
abougouffa | 0:5311825d0590 | 140 | gamepad_device_found = true; |
abougouffa | 0:5311825d0590 | 141 | return true; |
abougouffa | 0:5311825d0590 | 142 | } |
abougouffa | 0:5311825d0590 | 143 | } |
abougouffa | 0:5311825d0590 | 144 | return false; |
abougouffa | 0:5311825d0590 | 145 | } |
abougouffa | 0:5311825d0590 | 146 | |
abougouffa | 0:5311825d0590 | 147 | #endif |