107 lines
3.7 KiB
C
107 lines
3.7 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2017 Scott Shawcroft for Adafruit Industries
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* 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 OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <string.h>
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#include "common-hal/usb_hid/Device.h"
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#include "py/runtime.h"
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#include "shared-bindings/microcontroller/__init__.h"
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#include "shared-bindings/usb_hid/Device.h"
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#include "supervisor/shared/translate.h"
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#include "genhdr/autogen_usb_descriptor.h"
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#include "tick.h"
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#include "usb/class/hid/device/hiddf_generic.h"
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static uint32_t usb_hid_send_report(usb_hid_device_obj_t *self, uint8_t* report, uint8_t len) {
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int32_t status;
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// Don't get stuck if USB fails in some way; timeout after a while.
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uint64_t end_ticks = ticks_ms + 2000;
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while (ticks_ms < end_ticks) {
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status = usb_d_ep_get_status(self->endpoint, NULL);
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if (status == USB_BUSY) {
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continue;
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}
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if (status == USB_OK) {
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break;
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}
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// Some error. Give up.
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return status;
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}
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// Copy the data only when endpoint is ready to send. The previous
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// buffer load gets zero'd out when transaction completes, so if
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// you copy before it's ready, only zeros will get sent.
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// Prefix with a report id if one is supplied.
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if (self->report_id > 0) {
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self->report_buffer[0] = self->report_id;
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memcpy(&(self->report_buffer[1]), report, len);
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return hiddf_generic_write(self->report_buffer, len + 1);
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} else {
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memcpy(self->report_buffer, report, len);
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return hiddf_generic_write(self->report_buffer, len);
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}
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}
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void common_hal_usb_hid_device_send_report(usb_hid_device_obj_t *self, uint8_t* report, uint8_t len) {
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if (len != self->report_length) {
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mp_raise_ValueError_varg(translate("Buffer incorrect size. Should be %d bytes."), self->report_length);
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}
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int32_t status = usb_hid_send_report(self, report, len);
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if (status != ERR_NONE) {
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mp_raise_msg(&mp_type_OSError, status == USB_BUSY ? translate("USB Busy") : translate("USB Error"));
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}
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}
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uint8_t common_hal_usb_hid_device_get_usage_page(usb_hid_device_obj_t *self) {
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return self->usage_page;
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}
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uint8_t common_hal_usb_hid_device_get_usage(usb_hid_device_obj_t *self) {
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return self->usage;
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}
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void usb_hid_init() {
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}
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void usb_hid_reset() {
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// We don't actually reset. We just set a report that is empty to prevent
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// long keypresses and such.
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uint8_t report[USB_HID_MAX_REPORT_LENGTH] = {0};
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for (size_t i = 0; i < USB_HID_NUM_DEVICES; i++) {
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usb_hid_send_report(&usb_hid_devices[i], report, usb_hid_devices[i].report_length);
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}
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}
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