60 lines
2.3 KiB
C
60 lines
2.3 KiB
C
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/*
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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, 2018 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 "atmel_start_pins.h"
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#include "hpl/pm/hpl_pm_base.h"
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#include "hpl/gclk/hpl_gclk_base.h"
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#include "hal_gpio.h"
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void init_usb_hardware(void) {
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#ifdef SAMD21
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_pm_enable_bus_clock(PM_BUS_APBB, USB);
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_pm_enable_bus_clock(PM_BUS_AHB, USB);
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_gclk_enable_channel(USB_GCLK_ID, GCLK_CLKCTRL_GEN_GCLK0_Val);
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#endif
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#ifdef SAMD51
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hri_gclk_write_PCHCTRL_reg(GCLK, USB_GCLK_ID, GCLK_PCHCTRL_GEN_GCLK1_Val | GCLK_PCHCTRL_CHEN);
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hri_mclk_set_AHBMASK_USB_bit(MCLK);
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hri_mclk_set_APBBMASK_USB_bit(MCLK);
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#endif
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gpio_set_pin_direction(PIN_PA24, GPIO_DIRECTION_OUT);
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gpio_set_pin_level(PIN_PA24, false);
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gpio_set_pin_pull_mode(PIN_PA24, GPIO_PULL_OFF);
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gpio_set_pin_direction(PIN_PA25, GPIO_DIRECTION_OUT);
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gpio_set_pin_level(PIN_PA25, false);
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gpio_set_pin_pull_mode(PIN_PA25, GPIO_PULL_OFF);
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#ifdef SAMD21
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gpio_set_pin_function(PIN_PA24, PINMUX_PA24G_USB_DM);
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gpio_set_pin_function(PIN_PA25, PINMUX_PA25G_USB_DP);
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#endif
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#ifdef SAMD51
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gpio_set_pin_function(PIN_PA24, PINMUX_PA24H_USB_DM);
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gpio_set_pin_function(PIN_PA25, PINMUX_PA25H_USB_DP);
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#endif
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}
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