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2.3 KiB

/*
* 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 "atmel_start_pins.h"
#include "hpl/pm/hpl_pm_base.h"
#include "hpl/gclk/hpl_gclk_base.h"
#include "hal_gpio.h"
void init_usb_hardware(void) {
#ifdef SAMD21
_pm_enable_bus_clock(PM_BUS_APBB, USB);
_pm_enable_bus_clock(PM_BUS_AHB, USB);
_gclk_enable_channel(USB_GCLK_ID, GCLK_CLKCTRL_GEN_GCLK0_Val);
#endif
#ifdef SAMD51
hri_gclk_write_PCHCTRL_reg(GCLK, USB_GCLK_ID, GCLK_PCHCTRL_GEN_GCLK1_Val | GCLK_PCHCTRL_CHEN);
hri_mclk_set_AHBMASK_USB_bit(MCLK);
hri_mclk_set_APBBMASK_USB_bit(MCLK);
#endif
gpio_set_pin_direction(PIN_PA24, GPIO_DIRECTION_OUT);
gpio_set_pin_level(PIN_PA24, false);
gpio_set_pin_pull_mode(PIN_PA24, GPIO_PULL_OFF);
gpio_set_pin_direction(PIN_PA25, GPIO_DIRECTION_OUT);
gpio_set_pin_level(PIN_PA25, false);
gpio_set_pin_pull_mode(PIN_PA25, GPIO_PULL_OFF);
#ifdef SAMD21
gpio_set_pin_function(PIN_PA24, PINMUX_PA24G_USB_DM);
gpio_set_pin_function(PIN_PA25, PINMUX_PA25G_USB_DP);
#endif
#ifdef SAMD51
gpio_set_pin_function(PIN_PA24, PINMUX_PA24H_USB_DM);
gpio_set_pin_function(PIN_PA25, PINMUX_PA25H_USB_DP);
#endif
}