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Add 8086 USB Interposer
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‎ports/raspberrypi/boards/8086_usb_interposer/board.c

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// This file is part of the CircuitPython project: https://circuitpython.org
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//
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// SPDX-FileCopyrightText: Copyright (c) 2021 Scott Shawcroft for Adafruit Industries
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//
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// SPDX-License-Identifier: MIT
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#include "supervisor/board.h"
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#include "shared-bindings/digitalio/DigitalInOut.h"
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#include "shared-bindings/usb_host/Port.h"
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#include "hardware/gpio.h"
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// Use the MP_WEAK supervisor/shared/board.c versions of routines not defined here.
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digitalio_digitalinout_obj_t _host_power;
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bool board_reset_pin_number(uint8_t pin_number) {
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if (pin_number == 18) {
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// doing this (rather than gpio_init) in this specific order ensures no
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// glitch if pin was already configured as a high output. gpio_init() temporarily
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// configures the pin as an input, so the power enable value would potentially
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// glitch.
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gpio_put(pin_number, 1);
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gpio_set_dir(pin_number, GPIO_OUT);
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gpio_set_function(pin_number, GPIO_FUNC_SIO);
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return true;
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}
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return false;
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}
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void board_init(void) {
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common_hal_usb_host_port_construct(&pin_GPIO16, &pin_GPIO17);
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}

‎ports/raspberrypi/boards/8086_usb_interposer/mpconfigboard.h

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// This file is part of the CircuitPython project: https://circuitpython.org
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//
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// SPDX-FileCopyrightText: Copyright (c) 2021 Scott Shawcroft for Adafruit Industries
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//
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// SPDX-License-Identifier: MIT
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#pragma once
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#define MICROPY_HW_BOARD_NAME "8086 USB Interposer"
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#define MICROPY_HW_MCU_NAME "rp2040"
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#define MICROPY_HW_LED_STATUS (&pin_GPIO7)
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#define DEFAULT_I2C_BUS_SCL (&pin_GPIO15)
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#define DEFAULT_I2C_BUS_SDA (&pin_GPIO14)
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#define DEFAULT_UART_BUS_RX (&pin_GPIO1)
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#define DEFAULT_UART_BUS_TX (&pin_GPIO0)
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// #define CIRCUITPY_CONSOLE_UART_RX DEFAULT_UART_BUS_RX
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// #define CIRCUITPY_CONSOLE_UART_TX DEFAULT_UART_BUS_TX
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#define CIRCUITPY_USB_HOST_INSTANCE 1

‎ports/raspberrypi/boards/8086_usb_interposer/mpconfigboard.mk

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USB_VID = 0x3171
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USB_PID = 0x010C
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USB_PRODUCT = "USB Interposer"
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USB_MANUFACTURER = "8086 Consultancy"
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CHIP_VARIANT = RP2040
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CHIP_FAMILY = rp2
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EXTERNAL_FLASH_DEVICES = "W25Q128JVxQ"

‎ports/raspberrypi/boards/8086_usb_interposer/pico-sdk-configboard.h

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// This file is part of the CircuitPython project: https://circuitpython.org
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//
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// SPDX-FileCopyrightText: Copyright (c) 2021 Scott Shawcroft for Adafruit Industries
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//
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// SPDX-License-Identifier: MIT
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#pragma once
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// Put board-specific pico-sdk definitions here. This file must exist.
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// Allow extra time for xosc to start.
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#define PICO_XOSC_STARTUP_DELAY_MULTIPLIER 64

‎ports/raspberrypi/boards/8086_usb_interposer/pins.c

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// This file is part of the CircuitPython project: https://circuitpython.org
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//
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// SPDX-FileCopyrightText: Copyright (c) 2021 Scott Shawcroft for Adafruit Industries
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//
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// SPDX-License-Identifier: MIT
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#include "shared-bindings/board/__init__.h"
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static const mp_rom_map_elem_t board_module_globals_table[] = {
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CIRCUITPYTHON_BOARD_DICT_STANDARD_ITEMS
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{ MP_ROM_QSTR(MP_QSTR_ADC_VBUS_IN), MP_ROM_PTR(&pin_GPIO26) },
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{ MP_ROM_QSTR(MP_QSTR_A0), MP_ROM_PTR(&pin_GPIO26) },
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{ MP_ROM_QSTR(MP_QSTR_ADC_VBUS_OUT), MP_ROM_PTR(&pin_GPIO27) },
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{ MP_ROM_QSTR(MP_QSTR_A1), MP_ROM_PTR(&pin_GPIO27) },
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{ MP_ROM_QSTR(MP_QSTR_LED), MP_ROM_PTR(&pin_GPIO7) },
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{ MP_ROM_QSTR(MP_QSTR_LED_TOP_RED), MP_ROM_PTR(&pin_GPIO7) },
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{ MP_ROM_QSTR(MP_QSTR_GP7), MP_ROM_PTR(&pin_GPIO7) },
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{ MP_ROM_QSTR(MP_QSTR_LED_TOP_AMBER), MP_ROM_PTR(&pin_GPIO8) },
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{ MP_ROM_QSTR(MP_QSTR_GP8), MP_ROM_PTR(&pin_GPIO8) },
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{ MP_ROM_QSTR(MP_QSTR_LED_BOTTOM_RED), MP_ROM_PTR(&pin_GPIO22) },
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{ MP_ROM_QSTR(MP_QSTR_GP22), MP_ROM_PTR(&pin_GPIO22) },
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{ MP_ROM_QSTR(MP_QSTR_LED_BOTTOM_AMBER), MP_ROM_PTR(&pin_GPIO23) },
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{ MP_ROM_QSTR(MP_QSTR_GP23), MP_ROM_PTR(&pin_GPIO23) },
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{ MP_ROM_QSTR(MP_QSTR_RX), MP_ROM_PTR(&pin_GPIO1) },
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{ MP_ROM_QSTR(MP_QSTR_GP1), MP_ROM_PTR(&pin_GPIO1) },
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{ MP_ROM_QSTR(MP_QSTR_TX), MP_ROM_PTR(&pin_GPIO0) },
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{ MP_ROM_QSTR(MP_QSTR_GP0), MP_ROM_PTR(&pin_GPIO0) },
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{ MP_ROM_QSTR(MP_QSTR_SDA), MP_ROM_PTR(&pin_GPIO14) },
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{ MP_ROM_QSTR(MP_QSTR_GP14), MP_ROM_PTR(&pin_GPIO14) },
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{ MP_ROM_QSTR(MP_QSTR_SDA), MP_ROM_PTR(&pin_GPIO15) },
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{ MP_ROM_QSTR(MP_QSTR_GP15), MP_ROM_PTR(&pin_GPIO15) },
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{ MP_ROM_QSTR(MP_QSTR_BUTTON), MP_ROM_PTR(&pin_GPIO12) },
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{ MP_ROM_QSTR(MP_QSTR_BOOT), MP_ROM_PTR(&pin_GPIO12) },
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{ MP_ROM_QSTR(MP_QSTR_GP12), MP_ROM_PTR(&pin_GPIO12) },
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{ MP_ROM_QSTR(MP_QSTR_USB_HOST_DATA_PLUS), MP_ROM_PTR(&pin_GPIO16) },
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{ MP_ROM_QSTR(MP_QSTR_USB_HOST_DATA_MINUS), MP_ROM_PTR(&pin_GPIO17) },
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{ MP_ROM_QSTR(MP_QSTR_USB_HOST_5V_POWER), MP_ROM_PTR(&pin_GPIO18) },
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{ MP_ROM_QSTR(MP_QSTR_I2C), MP_ROM_PTR(&board_i2c_obj) },
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{ MP_ROM_QSTR(MP_QSTR_STEMMA_I2C), MP_ROM_PTR(&board_i2c_obj) },
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{ MP_ROM_QSTR(MP_QSTR_UART), MP_ROM_PTR(&board_uart_obj) },
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};
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MP_DEFINE_CONST_DICT(board_module_globals, board_module_globals_table);

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