72 lines
2.5 KiB
C
72 lines
2.5 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) 2022 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 "shared-bindings/microcontroller/Pin.h"
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#include "shared-bindings/usb_host/Port.h"
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#include "py/runtime.h"
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#include "tusb.h"
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#include "imx_usb.h"
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usb_host_port_obj_t usb_host_instance;
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usb_host_port_obj_t *common_hal_usb_host_port_construct(const mcu_pin_obj_t *dp, const mcu_pin_obj_t *dm) {
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const mcu_pin_obj_t *supported_dp;
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const mcu_pin_obj_t *supported_dm;
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if (CIRCUITPY_USB_HOST_INSTANCE == 0) {
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supported_dp = &pin_USB_OTG1_DP;
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supported_dm = &pin_USB_OTG1_DN;
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} else if (CIRCUITPY_USB_HOST_INSTANCE == 1) {
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supported_dp = &pin_USB_OTG2_DP;
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supported_dm = &pin_USB_OTG2_DN;
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}
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// Return the singleton if given the same pins.
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usb_host_port_obj_t *self = &usb_host_instance;
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if (self->dp != NULL) {
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if (self->dp != dp || self->dm != dm) {
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mp_raise_msg_varg(&mp_type_RuntimeError, translate("%q in use"), MP_QSTR_usb_host);
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}
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return self;
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}
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if (dp != supported_dp || dm != supported_dm) {
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raise_ValueError_invalid_pins();
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}
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assert_pin_free(dp);
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assert_pin_free(dm);
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init_usb_instance(CIRCUITPY_USB_HOST_INSTANCE);
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tuh_init(TUH_OPT_RHPORT);
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self->base.type = &usb_host_port_type;
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self->dp = dp;
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self->dm = dm;
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return self;
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}
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