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circuitpython/shared-module/usb_hid/Device.c

94 lines
3.6 KiB

/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2018 hathach for Adafruit Industries
*
* 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 <string.h>
#include "tick.h"
#include "py/runtime.h"
#include "shared-bindings/usb_hid/Device.h"
#include "shared-module/usb_hid/Device.h"
#include "supervisor/shared/translate.h"
#include "tusb.h"
uint8_t common_hal_usb_hid_device_get_usage_page(usb_hid_device_obj_t *self) {
return self->usage_page;
}
uint8_t common_hal_usb_hid_device_get_usage(usb_hid_device_obj_t *self) {
return self->usage;
}
void common_hal_usb_hid_device_send_report(usb_hid_device_obj_t *self, uint8_t* report, uint8_t len) {
if (len != self->report_length) {
mp_raise_ValueError_varg(translate("Buffer incorrect size. Should be %d bytes."), self->report_length);
}
// Wait until interface is ready, timeout = 2 seconds
uint64_t end_ticks = ticks_ms + 2000;
while ( (ticks_ms < end_ticks) && !tud_hid_ready() ) { }
if ( !tud_hid_ready() ) {
mp_raise_msg(&mp_type_OSError, translate("USB Busy"));
}
memcpy(self->report_buffer, report, len);
if ( !tud_hid_report(self->report_id, self->report_buffer, len) ) {
mp_raise_msg(&mp_type_OSError, translate("USB Error"));
}
}
static usb_hid_device_obj_t* get_hid_device(uint8_t report_id) {
for (uint8_t i = 0; i < USB_HID_NUM_DEVICES; i++) {
if (usb_hid_devices[i].report_id == report_id) {
return &usb_hid_devices[i];
}
}
return NULL;
}
// Callbacks invoked when receive Get_Report request through control endpoint
uint16_t tud_hid_get_report_cb(uint8_t report_id, hid_report_type_t report_type, uint8_t* buffer, uint16_t reqlen) {
// only support Input Report
if ( report_type != HID_REPORT_TYPE_INPUT ) return 0;
// fill buffer with current report
memcpy(buffer, get_hid_device(report_id)->report_buffer, reqlen);
return reqlen;
}
// Callbacks invoked when receive Set_Report request through control endpoint
void tud_hid_set_report_cb(uint8_t report_id, hid_report_type_t report_type, uint8_t const* buffer, uint16_t bufsize) {
usb_hid_device_obj_t* hid_device = get_hid_device(report_id);
if ( report_type == HID_REPORT_TYPE_OUTPUT ) {
// Check if it is Keyboard device
if (hid_device->usage_page == HID_USAGE_PAGE_DESKTOP &&
hid_device->usage == HID_USAGE_DESKTOP_KEYBOARD) {
// This is LED indicator (CapsLock, NumLock)
// TODO Light up some LED here
}
}
}