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rawhid.cpp
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rawhid.cpp
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/* USB EHCI Host for Teensy 3.6
* Copyright 2017 Paul Stoffregen (paul@pjrc.com)
*
* 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 <Arduino.h>
#include "USBHost_t36.h" // Read this header first for key info
void RawHIDController::init()
{
USBHost::contribute_Transfers(mytransfers, sizeof(mytransfers)/sizeof(Transfer_t));
USBHIDParser::driver_ready_for_hid_collection(this);
}
hidclaim_t RawHIDController::claim_collection(USBHIDParser *driver, Device_t *dev, uint32_t topusage)
{
// only claim RAWHID devices currently: 16c0:0486
#ifdef USBHOST_PRINT_DEBUG
USBHDBGSerial.printf("Rawhid Claim: %x:%x usage: %x\n", dev->idVendor, dev->idProduct, topusage);
#endif
if (dev->idVendor != 0x16c0) return CLAIM_NO; // NOT PJRC
if (mydevice != NULL && dev != mydevice) return CLAIM_NO;
if (usage_) return CLAIM_NO; // Only claim one
if (fixed_usage_ ) {
if (fixed_usage_ != topusage) return CLAIM_NO; // See if we want specific one and if so is it this one
} else if (dev->idProduct != 0x486) return CLAIM_NO; // otherwise mainly used for RAWHID Serial type.
rx_pipe_size_ = driver->inSize();
tx_pipe_size_ = driver->outSize();
if (rx_pipe_size_ > 64 && (rx_tx_buffers_ == nullptr)) return CLAIM_NO; // not big enough
if (rx_tx_buffers_) {
uint8_t count_buffers = min(4, rx_tx_buffer_size_ / (rx_pipe_size_ + tx_pipe_size_));
if (count_buffers == 0) return CLAIM_NO; // Not enough for one... so bail
uint8_t *tx_buffer[4] = {nullptr, nullptr, nullptr, nullptr};
uint8_t *rx_buffer[4] = {nullptr, nullptr, nullptr, nullptr};
uint8_t *rx_start = rx_tx_buffers_ + (tx_pipe_size_ * count_buffers);
for (uint8_t i = 0; i < count_buffers; i++) {
tx_buffer[i] = rx_tx_buffers_ + (tx_pipe_size_ * i);
rx_buffer[i] = rx_start + (rx_pipe_size_ * i);
}
driver->setTXBuffers(tx_buffer[0], tx_buffer[1], tx_pipe_size_, tx_buffer[2], tx_buffer[3]);
driver->setRXBuffers(rx_buffer[0], rx_buffer[1], rx_pipe_size_, rx_buffer[2], rx_buffer[3]);
//#ifdef USBHOST_PRINT_DEBUG
USBHDBGSerial.printf(" >> setTXBuffers: %x %x %x %x\n", (uint32_t)tx_buffer[0], (uint32_t)tx_buffer[1], (uint32_t)tx_buffer[2], (uint32_t)tx_buffer[3]);
USBHDBGSerial.printf(" >> setRXBuffers: %x %x %x %x\n", (uint32_t)rx_buffer[0], (uint32_t)rx_buffer[1], (uint32_t)rx_buffer[2], (uint32_t)rx_buffer[3]);
//#endif
}
mydevice = dev;
collections_claimed++;
usage_ = topusage;
driver_ = driver; // remember the driver.
return CLAIM_INTERFACE; // We wa
}
void RawHIDController::disconnect_collection(Device_t *dev)
{
if (--collections_claimed == 0) {
mydevice = NULL;
usage_ = 0;
}
}
bool RawHIDController::hid_process_in_data(const Transfer_t *transfer)
{
#ifdef USBHOST_PRINT_DEBUG
USBHDBGSerial.printf("RawHIDController::hid_process_in_data: %x\n", usage_);
#endif
if (receiveCB) {
return (*receiveCB)(usage_, (const uint8_t *)transfer->buffer, transfer->length);
}
return true;
}
bool RawHIDController::hid_process_out_data(const Transfer_t *transfer)
{
#ifdef USBHOST_PRINT_DEBUG
USBHDBGSerial.printf("RawHIDController::hid_process_out_data: %x\n", usage_);
#endif
return true;
}
bool RawHIDController::sendPacket(const uint8_t *buffer, int cb)
{
if (!driver_) return false;
return driver_->sendPacket(buffer, cb);
}
void RawHIDController::hid_input_begin(uint32_t topusage, uint32_t type, int lgmin, int lgmax)
{
// These should not be called as we are claiming the whole interface and not
// allowing the parse to happen
#ifdef USBHOST_PRINT_DEBUG
USBHDBGSerial.printf("RawHID::hid_input_begin %x %x %x %x\n", topusage, type, lgmin, lgmax);
#endif
//hid_input_begin_ = true;
}
void RawHIDController::hid_input_data(uint32_t usage, int32_t value)
{
// These should not be called as we are claiming the whole interface and not
// allowing the parse to happen
#ifdef USBHOST_PRINT_DEBUG
USBHDBGSerial.printf("RawHID: usage=%X, value=%d", usage, value);
if ((value >= ' ') && (value <='~')) USBHDBGSerial.printf("(%c)", value);
USBHDBGSerial.println();
#endif
}
void RawHIDController::hid_input_end()
{
// These should not be called as we are claiming the whole interface and not
// allowing the parse to happen
#ifdef USBHOST_PRINT_DEBUG
USBHDBGSerial.println("RawHID::hid_input_end");
#endif
// if (hid_input_begin_) {
// hid_input_begin_ = false;
// }
}