circuitpython/ports/broadcom/supervisor/usb.c

/*
 * This file is part of the MicroPython project, http://micropython.org/
 *
 * The MIT License (MIT)
 *
 * Copyright (c) 2017, 2018 Scott Shawcroft 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 "lib/tinyusb/src/device/usbd.h"
#include "py/runtime.h"
#include "supervisor/background_callback.h"
#include "supervisor/usb.h"

#include "peripherals/broadcom/interrupts.h"
#include "peripherals/broadcom/vcmailbox.h"

uint32_t SystemCoreClock = 700 * 1000 * 1000;

void USB_IRQHandler(void) {
    usb_irq_handler(0);
}

void init_usb_hardware(void) {
    vcmailbox_set_power_state(VCMAILBOX_DEVICE_USB_HCD, true);

    BP_SetPriority(USB_IRQn, 0x00);
    BP_ClearPendingIRQ(USB_IRQn);
    BP_EnableIRQ(USB_IRQn);
    BP_EnableIRQs();
}