93 lines
3.2 KiB
C
93 lines
3.2 KiB
C
/*
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* This file is part of the Micro Python 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 "py/nlr.h"
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#include "common-hal/usb_hid/__init__.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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static void report_sent(udd_ep_status_t status, iram_size_t nb_sent,
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udd_ep_id_t ep) {
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UNUSED(status);
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UNUSED(nb_sent);
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for (uint8_t i = 0; i < 2; i++) {
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if (ep == usb_hid_devices[i].endpoint) {
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usb_hid_devices[i].transaction_ongoing = false;
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return;
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}
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}
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}
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bool usb_hid_send_report(usb_hid_device_obj_t *self, uint8_t* report, uint8_t len) {
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if (!self->enabled) {
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return true;
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}
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// Wait for the previous transaction to finish. Shouldn't happen.
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uint32_t timeout = 0xffff;
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while (self->transaction_ongoing && timeout > 0) {
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timeout--;
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}
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if (self->transaction_ongoing) {
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return false;
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}
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memcpy(self->report_buffer, report, len);
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// Disable interrupts to make sure we save the ongoing state before the
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// report_sent interrupt.
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common_hal_mcu_disable_interrupts();
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bool ok = udd_ep_run(self->endpoint, false,
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self->report_buffer, self->report_length, report_sent);
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self->transaction_ongoing = ok;
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common_hal_mcu_enable_interrupts();
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return ok;
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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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nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_ValueError,
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"Buffer incorrect size. Should be %d bytes.", self->report_length));
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}
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if (!self->enabled) {
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nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError, "USB Inactive"));
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}
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if (!usb_hid_send_report(self, report, len)) {
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nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError, "USB Busy"));
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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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