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Add OHARARP ESP32-B board definition
ESP32-S3-WROOM-1-N16R8 based Feather-compatible board with: - 16MB QIO flash, 8MB OPI PSRAM - Native USB-C - DS3231MZ+ RTC with coin cell backup - AT24CS32 I2C EEPROM - Micro SD card (SPI) - NeoPixel (SK6805), status LED, 2 user buttons - STEMMA/Qwiic I2C breakout (JST-SH) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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‎ports/espressif/boards/ohararp_esp32b/board.c‎

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// This file is part of the CircuitPython project: https://circuitpython.org
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// SPDX-FileCopyrightText: Copyright (c) 2025 OHARARP LLC
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// SPDX-License-Identifier: MIT
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#include "supervisor/board.h"
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#include "mpconfigboard.h"
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#include "shared-bindings/microcontroller/Pin.h"
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void board_init(void) {
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}

‎ports/espressif/boards/ohararp_esp32b/mpconfigboard.h‎

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// This file is part of the CircuitPython project: https://circuitpython.org
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// SPDX-FileCopyrightText: Copyright (c) 2025 OHARARP LLC
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// SPDX-License-Identifier: MIT
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#pragma once
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#define MICROPY_HW_BOARD_NAME "OHARARP ESP32-B"
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#define MICROPY_HW_MCU_NAME "ESP32-S3"
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// USB configuration
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#define MICROPY_HW_USB_VID 0x303A
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#define MICROPY_HW_USB_PID 0x8249
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// NeoPixel
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#define MICROPY_HW_NEOPIXEL (&pin_GPIO48)
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// Status LED
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#define MICROPY_HW_LED (&pin_GPIO21)
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#define MICROPY_HW_LED_STATUS (&pin_GPIO21)
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// Default bus pins
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#define DEFAULT_I2C_BUS_SCL (&pin_GPIO9)
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#define DEFAULT_I2C_BUS_SDA (&pin_GPIO8)
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#define DEFAULT_SPI_BUS_SCK (&pin_GPIO12)
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#define DEFAULT_SPI_BUS_MOSI (&pin_GPIO11)
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#define DEFAULT_SPI_BUS_MISO (&pin_GPIO13)
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#define DEFAULT_UART_BUS_TX (&pin_GPIO43)
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#define DEFAULT_UART_BUS_RX (&pin_GPIO44)

‎ports/espressif/boards/ohararp_esp32b/mpconfigboard.mk‎

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USB_VID = 0x303A
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USB_PID = 0x8249
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USB_PRODUCT = "ESP32-B"
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USB_MANUFACTURER = "OHARARP LLC"
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IDF_TARGET = esp32s3
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CIRCUITPY_ESP_FLASH_SIZE = 16MB
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CIRCUITPY_ESP_FLASH_MODE = qio
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CIRCUITPY_ESP_FLASH_FREQ = 80m
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CIRCUITPY_ESP_PSRAM_SIZE = 8MB
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CIRCUITPY_ESP_PSRAM_MODE = opi
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CIRCUITPY_ESP_PSRAM_FREQ = 80m
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CIRCUITPY_NEOPIXEL_WRITE = 1

‎ports/espressif/boards/ohararp_esp32b/pins.c‎

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// This file is part of the CircuitPython project: https://circuitpython.org
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// SPDX-FileCopyrightText: Copyright (c) 2025 OHARARP LLC
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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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// Analog pins (accent Feather pinout)
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{ MP_ROM_QSTR(MP_QSTR_A0), MP_ROM_PTR(&pin_GPIO1) },
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{ MP_ROM_QSTR(MP_QSTR_A1), MP_ROM_PTR(&pin_GPIO2) },
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{ MP_ROM_QSTR(MP_QSTR_A2), MP_ROM_PTR(&pin_GPIO4) },
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{ MP_ROM_QSTR(MP_QSTR_A3), MP_ROM_PTR(&pin_GPIO5) },
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{ MP_ROM_QSTR(MP_QSTR_A4), MP_ROM_PTR(&pin_GPIO6) },
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{ MP_ROM_QSTR(MP_QSTR_A5), MP_ROM_PTR(&pin_GPIO7) },
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// Digital pins (Feather pinout)
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{ MP_ROM_QSTR(MP_QSTR_D5), MP_ROM_PTR(&pin_GPIO39) },
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{ MP_ROM_QSTR(MP_QSTR_D6), MP_ROM_PTR(&pin_GPIO47) },
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{ MP_ROM_QSTR(MP_QSTR_D9), MP_ROM_PTR(&pin_GPIO18) },
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{ MP_ROM_QSTR(MP_QSTR_D10), MP_ROM_PTR(&pin_GPIO16) },
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{ MP_ROM_QSTR(MP_QSTR_D11), MP_ROM_PTR(&pin_GPIO15) },
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{ MP_ROM_QSTR(MP_QSTR_D12), MP_ROM_PTR(&pin_GPIO14) },
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// UART
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{ MP_ROM_QSTR(MP_QSTR_TX), MP_ROM_PTR(&pin_GPIO43) },
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{ MP_ROM_QSTR(MP_QSTR_RX), MP_ROM_PTR(&pin_GPIO44) },
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// I2C
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{ MP_ROM_QSTR(MP_QSTR_SCL), MP_ROM_PTR(&pin_GPIO9) },
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{ MP_ROM_QSTR(MP_QSTR_SDA), MP_ROM_PTR(&pin_GPIO8) },
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// SPI
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{ MP_ROM_QSTR(MP_QSTR_SCK), MP_ROM_PTR(&pin_GPIO12) },
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{ MP_ROM_QSTR(MP_QSTR_MOSI), MP_ROM_PTR(&pin_GPIO11) },
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{ MP_ROM_QSTR(MP_QSTR_MISO), MP_ROM_PTR(&pin_GPIO13) },
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// SD card
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{ MP_ROM_QSTR(MP_QSTR_SD_CS), MP_ROM_PTR(&pin_GPIO10) },
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{ MP_ROM_QSTR(MP_QSTR_SD_CD), MP_ROM_PTR(&pin_GPIO38) },
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// RTC interrupt
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{ MP_ROM_QSTR(MP_QSTR_RTC_INT), MP_ROM_PTR(&pin_GPIO17) },
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// NeoPixel
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{ MP_ROM_QSTR(MP_QSTR_NEOPIXEL), MP_ROM_PTR(&pin_GPIO48) },
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// Status LED
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{ MP_ROM_QSTR(MP_QSTR_LED), MP_ROM_PTR(&pin_GPIO21) },
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{ MP_ROM_QSTR(MP_QSTR_STATUS_LED), MP_ROM_PTR(&pin_GPIO21) },
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// User buttons
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{ MP_ROM_QSTR(MP_QSTR_BUTTON_A), MP_ROM_PTR(&pin_GPIO41) },
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{ MP_ROM_QSTR(MP_QSTR_BUTTON_B), MP_ROM_PTR(&pin_GPIO42) },
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{ MP_ROM_QSTR(MP_QSTR_BOOT), MP_ROM_PTR(&pin_GPIO0) },
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// I2C, SPI, UART bus objects
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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_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_module_globals_table);

‎ports/espressif/boards/ohararp_esp32b/sdkconfig‎

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CONFIG_ESP32S3_SPIRAM_SUPPORT=y
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CONFIG_SPIRAM_MODE_OCT=y
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CONFIG_SPIRAM_TYPE_AUTO=y
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CONFIG_DEFAULT_PSRAM_CLK_IO=30
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CONFIG_DEFAULT_PSRAM_CS_IO=26
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CONFIG_SPIRAM_SPEED_80M=y
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CONFIG_ESP_DEFAULT_CPU_FREQ_MHZ_240=y
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CONFIG_ESP_DEFAULT_CPU_FREQ_MHZ=240
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CONFIG_ESP32S3_DATA_CACHE_64KB=y
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CONFIG_ESP32S3_DATA_CACHE_LINE_64B=y
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# USB CDC on native USB pins (IO19/IO20)
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CONFIG_ESP_CONSOLE_USB_SERIAL_JTAG=n
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CONFIG_ESP_CONSOLE_USB_CDC=y

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