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Add Mouse driver from wwatson (part 2)

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PaulStoffregen 2017-08-24 13:50:03 -07:00
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commit 99ec892dd7
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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 MouseController::init()
{
contribute_Pipes(mypipes, sizeof(mypipes)/sizeof(Pipe_t));
contribute_Transfers(mytransfers, sizeof(mytransfers)/sizeof(Transfer_t));
driver_ready_for_device(this);
}
bool MouseController::claim(Device_t *dev, int type, const uint8_t *descriptors, uint32_t len)
{
println("MouseController claim this=", (uint32_t)this, HEX);
// only claim at interface level
if (type != 1) return false;
if (len < 9+9+7) return false;
uint32_t numendpoint = descriptors[4];
if (numendpoint < 1) return false;
if (descriptors[5] != 3) return false; // bInterfaceClass, 3 = HID
if (descriptors[6] != 1) return false; // bInterfaceSubClass, 1 = Boot Device
if (descriptors[7] != 2) return false; // bInterfaceProtocol, 2 = Mouse
if (descriptors[9] != 9) return false;
if (descriptors[10] != 33) return false; // HID descriptor (ignored, Boot Protocol)
if (descriptors[18] != 7) return false;
if (descriptors[19] != 5) return false; // endpoint descriptor
uint32_t endpoint = descriptors[20];
println("ep(mouse) = ", endpoint, HEX);
if ((endpoint & 0xF0) != 0x80) return false; // must be IN direction
endpoint &= 0x0F;
if (endpoint == 0) return false;
if (descriptors[21] != 3) return false; // must be interrupt type
uint32_t size = descriptors[22] | (descriptors[23] << 8);
println("descriptors[22] = ",descriptors[22]);
println("descriptors[23] = ",descriptors[23]);
println("packet size(mouse) = ", size);
// packey size seems to be 20 for (wireless type 2) or 6 bytes for wired
packetSize = size;
if ((size != 20) && (size != 6)) return false;
if(packetSize == 6) packetSize = 8; // Minimum packet size needed is 8
uint32_t interval = descriptors[24];
println("polling interval = ", interval);
datapipe = new_Pipe(dev, 3, endpoint, 1, packetSize, interval);
datapipe->callback_function = callback;
queue_Data_Transfer(datapipe, report, packetSize, this);
mk_setup(setup, 0x21, 10, 0, 0, 0); // 10=SET_IDLE
queue_Control_Transfer(dev, &setup, NULL, this);
return true;
}
void MouseController::control(const Transfer_t *transfer)
{
}
void MouseController::callback(const Transfer_t *transfer)
{
//println("MouseController Callback (static)");
if (transfer->driver) {
((MouseController *)(transfer->driver))->new_data(transfer);
}
}
void MouseController::disconnect()
{
// TODO: free resources
}
// Arduino defined this static weak symbol callback, and their
// examples use it as the only way to detect new key presses,
// so unfortunate as static weak callbacks are, it probably
// needs to be supported for compatibility
extern "C" {
void __MouseControllerEmptyCallback() { }
}
//void mouseEvent() __attribute__ ((weak, alias("__mouseEventEmptyCallback")));
void MouseController::new_data(const Transfer_t *transfer)
{
println("MouseController Callback (member)");
print(" Mouse Data: ");
print_hexbytes(transfer->buffer, 8);
// The mouse button report byte is 1 for left button, 2 for right button, 4 for wheel
// button (three button mouse).
//
// The mouse x and y report consists of two 12 bit signed values packed into three
// bytes and are relative values. Shown below are the three x/y bytes of a wireless
// mouse report packet.
//
// byte 3 is the lower 8 bits of the x coordinate.
// byte 5 is the upper 8 bits of the y coordinate.
// byte 4 lower 4 bits are the upper 4 bits of the x coordinate.
// byte 4 upper 4 bits are the lower 4 bits of the y coordinate.
//
// Example of one increment in all four directions:
// x x
// ff 0f 00 = left -1 00 01 00 = right 1
// y y
// 00 f0 ff = up -1 00 10 00 = down 1
//
// The wheel report is a signed byte that is 1 for forward and -1 for backward movement.
// It is cleared to zero with any x and/or y movement.
//
// Wireless Logitech mouse reports have byte 0 set to 0x02 indicating a type 2 report.
// Not sure what this really means yet but all bytes of the report packet are shifted
// ahead by one byte and there is a single byte that is always zero after the button
// report byte.
if(packetSize == 20) {
buttons = report[1];
mouseX = ((report[4] & 0x0f) << 8 | (report[3] & 0xff));
mouseY = ((report[5] & 0xff) << 4 | (report[4] >> 4) & 0x0f);
wheel = report[6];
} else {
buttons = report[0];
mouseX = ((report[2] & 0x0f) << 8 | (report[1] & 0xff));
mouseY = ((report[3] & 0xff) << 4 | (report[2] >> 4) & 0x0f);
wheel = report[4];
}
mouseEvent = true;
memcpy(prev_report, report, 20);
queue_Data_Transfer(datapipe, report, 20, this);
}
void MouseController::mouseDataClear() {
mouseEvent = false;
buttons = 0;
mouseX = 0;
mouseY = 0;
wheel = 0;
}