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This is a pull request to add support for uChip into the Circuitpython environment. We tested the uploaded code and it seems to work with Circuitpython. If there are any suggestions or changes needed, please let us know! What is uChip in brief? A complete USB dev board the size of a narrow 16-DIP package, featuring Atmel SAMD21 Cortex M0+ and onboard switching converters. (OTG compliant and power delivery up to 1A@5V or 3V3). For more details refer to the ongoing campaign on kickstarter. www.kickstarter.com/projects/1186620431/uchip-arduino-zero-compatible-in-a-narrow-dip-16-p
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‎ports/atmel-samd/boards/uChip/board.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 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 "boards/board.h"
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#include "mpconfigboard.h"
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#include "hal/include/hal_gpio.h"
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void board_init(void) {
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}
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bool board_requests_safe_mode(void) {
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return false;
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}
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void reset_board(void) {
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}

‎ports/atmel-samd/boards/uChip/mpconfigboard.h

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#define MICROPY_HW_BOARD_NAME "uChip"
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#define MICROPY_HW_MCU_NAME "samd21e18"
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#define MICROPY_HW_LED_STATUS (&pin_PA07)
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#define MICROPY_PORT_A (PORT_PA00 | PORT_PA01 | PORT_PA14 | PORT_PA15 | PORT_PA28 | PORT_PA27 | PORT_PA24 | PORT_PA25)
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#define MICROPY_PORT_B (0)
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#define MICROPY_PORT_C (0)
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#define CIRCUITPY_INTERNAL_NVM_SIZE 0
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#define BOARD_FLASH_SIZE (0x00040000 - 0x2000 - 0x010000)
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// USB is always used internally so skip the pin objects for it.
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#define IGNORE_PIN_PA24 1
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#define IGNORE_PIN_PA25 1
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#define IGNORE_PIN_PA27 1
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#define IGNORE_PIN_PA28 1
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#define IGNORE_PIN_PA30 1
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#define IGNORE_PIN_PA31 1
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#define IGNORE_PIN_PB01 1
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#define IGNORE_PIN_PB02 1
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#define IGNORE_PIN_PB03 1
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#define IGNORE_PIN_PB04 1
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#define IGNORE_PIN_PB05 1
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#define IGNORE_PIN_PB06 1
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#define IGNORE_PIN_PB07 1
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#define IGNORE_PIN_PB08 1
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#define IGNORE_PIN_PB09 1
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#define IGNORE_PIN_PB10 1
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#define IGNORE_PIN_PB11 1
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#define IGNORE_PIN_PB12 1
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#define IGNORE_PIN_PB13 1
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#define IGNORE_PIN_PB14 1
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#define IGNORE_PIN_PB15 1
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#define IGNORE_PIN_PB16 1
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#define IGNORE_PIN_PB17 1
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#define IGNORE_PIN_PB22 1
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#define IGNORE_PIN_PB23 1
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#define IGNORE_PIN_PB30 1
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#define IGNORE_PIN_PB31 1
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#define IGNORE_PIN_PB00 1
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#define DEFAULT_I2C_BUS_SCL (&pin_PA23)
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#define DEFAULT_I2C_BUS_SDA (&pin_PA22)
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#define DEFAULT_SPI_BUS_SCK (&pin_PA16)
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#define DEFAULT_SPI_BUS_MOSI (&pin_PA17)
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#define DEFAULT_SPI_BUS_MISO (&pin_PA19)
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#define DEFAULT_UART_BUS_RX (&pin_PA11)
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#define DEFAULT_UART_BUS_TX (&pin_PA10)

‎ports/atmel-samd/boards/uChip/mpconfigboard.mk

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LD_FILE = boards/samd21x18-bootloader.ld
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USB_VID = 0x04D8
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USB_PID = 0xED7D
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USB_PRODUCT = "uChip CircuitPython"
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USB_MANUFACTURER = "Itaca Innovation"
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INTERNAL_FLASH_FILESYSTEM = 1
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LONGINT_IMPL = NONE
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CIRCUITPY_SMALL_BUILD = 1
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CHIP_VARIANT = SAMD21E18A
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CHIP_FAMILY = samd21

‎ports/atmel-samd/boards/uChip/pins.c

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#include "shared-bindings/board/__init__.h"
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#include "supervisor/shared/board_busses.h"
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STATIC const mp_rom_map_elem_t board_global_dict_table[] = {
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{ MP_ROM_QSTR(MP_QSTR_A1), MP_ROM_PTR(&pin_PA06) },
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{ MP_ROM_QSTR(MP_QSTR_A2), MP_ROM_PTR(&pin_PA08) },
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{ MP_ROM_QSTR(MP_QSTR_A3), MP_ROM_PTR(&pin_PA10) },
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{ MP_ROM_QSTR(MP_QSTR_A4), MP_ROM_PTR(&pin_PA09) },
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{ MP_ROM_QSTR(MP_QSTR_A5), MP_ROM_PTR(&pin_PA11) },
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{ MP_ROM_QSTR(MP_QSTR_A6), MP_ROM_PTR(&pin_PA05) },
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{ MP_ROM_QSTR(MP_QSTR_A7), MP_ROM_PTR(&pin_PA02) },
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{ MP_ROM_QSTR(MP_QSTR_A8), MP_ROM_PTR(&pin_PA04) },
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{ MP_ROM_QSTR(MP_QSTR_D1), MP_ROM_PTR(&pin_PA06) },
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{ MP_ROM_QSTR(MP_QSTR_D2), MP_ROM_PTR(&pin_PA08) },
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{ MP_ROM_QSTR(MP_QSTR_D3), MP_ROM_PTR(&pin_PA10) },
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{ MP_ROM_QSTR(MP_QSTR_D4), MP_ROM_PTR(&pin_PA09) },
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{ MP_ROM_QSTR(MP_QSTR_D5), MP_ROM_PTR(&pin_PA11) },
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{ MP_ROM_QSTR(MP_QSTR_D6), MP_ROM_PTR(&pin_PA17) },
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{ MP_ROM_QSTR(MP_QSTR_D7), MP_ROM_PTR(&pin_PA18) },
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{ MP_ROM_QSTR(MP_QSTR_D9), MP_ROM_PTR(&pin_PA19) },
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{ MP_ROM_QSTR(MP_QSTR_D10), MP_ROM_PTR(&pin_PA22) },
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{ MP_ROM_QSTR(MP_QSTR_D11), MP_ROM_PTR(&pin_PA23) },
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{ MP_ROM_QSTR(MP_QSTR_D13), MP_ROM_PTR(&pin_PA05) },
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{ MP_ROM_QSTR(MP_QSTR_D14), MP_ROM_PTR(&pin_PA02) },
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{ MP_ROM_QSTR(MP_QSTR_D15), MP_ROM_PTR(&pin_PA04) },
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{ MP_ROM_QSTR(MP_QSTR_RX), MP_ROM_PTR(&pin_PA11) },
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{ MP_ROM_QSTR(MP_QSTR_TX), MP_ROM_PTR(&pin_PA10) },
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{ MP_ROM_QSTR(MP_QSTR_SDA), MP_ROM_PTR(&pin_PA22) },
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{ MP_ROM_QSTR(MP_QSTR_SCL), MP_ROM_PTR(&pin_PA23) },
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{ MP_ROM_QSTR(MP_QSTR_SCK), MP_ROM_PTR(&pin_PA16) },
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{ MP_ROM_QSTR(MP_QSTR_MOSI), MP_ROM_PTR(&pin_PA17) },
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{ MP_ROM_QSTR(MP_QSTR_MISO), MP_ROM_PTR(&pin_PA19) },
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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_SPI), MP_ROM_PTR(&board_spi_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_global_dict_table);

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