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https://github.com/gdsports/USBHost_t36
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8aa67ff939
Needed HID Parser to support Bidirectional Transfers The HidParser code was setup such that the claim for a report, the caller could say I want to claim the whole thinig and allowed callback functions for processing of in buffer and out buffer. Allow RawHID to contribute Transfer_t Since RawHID may need more resources than most, maybe it should contribute the additional structures The constructor for a RAWHID object allows you to specify the top usage that it wishes to connect to. I used this for example to be able to connect to a Teensy with the RAWHID associated with emulating the Serial object. If a HID Input class says that it wants to claim the whole interface, I reuse the buffer associated with holding the HID descriptor and use it for output buffers.
121 lines
3.9 KiB
C++
121 lines
3.9 KiB
C++
/* USB EHCI Host for Teensy 3.6
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* Copyright 2017 Paul Stoffregen (paul@pjrc.com)
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include <Arduino.h>
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#include "USBHost_t36.h" // Read this header first for key info
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void RawHIDController::init()
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{
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USBHost::contribute_Transfers(mytransfers, sizeof(mytransfers)/sizeof(Transfer_t));
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USBHIDParser::driver_ready_for_hid_collection(this);
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}
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hidclaim_t RawHIDController::claim_collection(USBHIDParser *driver, Device_t *dev, uint32_t topusage)
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{
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// only claim RAWHID devices currently: 16c0:0486
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#ifdef USBHOST_PRINT_DEBUG
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Serial.printf("Rawhid Claim: %x:%x usage: %x\n", dev->idVendor, dev->idProduct, topusage);
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#endif
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if ((dev->idVendor != 0x16c0 || (dev->idProduct) != 0x486)) return CLAIM_NO;
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if (mydevice != NULL && dev != mydevice) return CLAIM_NO;
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if (usage_) return CLAIM_NO; // Only claim one
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if (fixed_usage_ && (fixed_usage_ != topusage)) return CLAIM_NO; // See if we want specific one and if so is it this one
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mydevice = dev;
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collections_claimed++;
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usage_ = topusage;
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driver_ = driver; // remember the driver.
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return CLAIM_INTERFACE; // We wa
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}
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void RawHIDController::disconnect_collection(Device_t *dev)
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{
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if (--collections_claimed == 0) {
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mydevice = NULL;
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usage_ = 0;
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}
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}
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bool RawHIDController::hid_process_in_data(const Transfer_t *transfer)
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{
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#ifdef USBHOST_PRINT_DEBUG
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Serial.printf("RawHIDController::hid_process_in_data: %x\n", usage_);
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#endif
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if (receiveCB) {
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return (*receiveCB)(usage_, (const uint8_t *)transfer->buffer, transfer->length);
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}
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return true;
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}
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bool RawHIDController::hid_process_out_data(const Transfer_t *transfer)
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{
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#ifdef USBHOST_PRINT_DEBUG
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Serial.printf("RawHIDController::hid_process_out_data: %x\n", usage_);
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#endif
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return true;
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}
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bool RawHIDController::sendPacket(const uint8_t *buffer)
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{
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if (!driver_) return false;
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return driver_->sendPacket(buffer);
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}
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void RawHIDController::hid_input_begin(uint32_t topusage, uint32_t type, int lgmin, int lgmax)
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{
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// These should not be called as we are claiming the whole interface and not
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// allowing the parse to happen
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#ifdef USBHOST_PRINT_DEBUG
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Serial.printf("RawHID::hid_input_begin %x %x %x %x\n", topusage, type, lgmin, lgmax);
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#endif
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//hid_input_begin_ = true;
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}
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void RawHIDController::hid_input_data(uint32_t usage, int32_t value)
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{
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// These should not be called as we are claiming the whole interface and not
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// allowing the parse to happen
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#ifdef USBHOST_PRINT_DEBUG
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Serial.printf("RawHID: usage=%X, value=%d", usage, value);
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if ((value >= ' ') && (value <='~')) Serial.printf("(%c)", value);
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Serial.println();
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#endif
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}
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void RawHIDController::hid_input_end()
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{
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// These should not be called as we are claiming the whole interface and not
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// allowing the parse to happen
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#ifdef USBHOST_PRINT_DEBUG
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Serial.println("RawHID::hid_input_end");
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#endif
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// if (hid_input_begin_) {
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// hid_input_begin_ = false;
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// }
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}
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