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Added new board: M5Stack DinMeter (esp32s3)
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‎ports/espressif/boards/m5stack_dinmeter/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) 2020 Scott Shawcroft for Adafruit Industries
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//
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// SPDX-License-Identifier: MIT
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#include "mpconfigboard.h"
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#include "supervisor/board.h"
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#include "supervisor/shared/serial.h"
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#include "shared-bindings/busio/SPI.h"
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#include "shared-bindings/fourwire/FourWire.h"
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#include "shared-bindings/microcontroller/Pin.h"
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#include "shared-module/displayio/__init__.h"
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#include "shared-module/displayio/mipi_constants.h"
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#include "shared-bindings/board/__init__.h"
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#include "py/runtime.h"
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#include "py/ringbuf.h"
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#include "shared/runtime/interrupt_char.h"
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uint8_t display_init_sequence[] = {
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0x01, 0x80, 0x96, // SWRESET and Delay 150ms
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0x11, 0x80, 0xff, // SLPOUT and Delay
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0xb1, 0x03, 0x01, 0x2C, 0x2D, // _FRMCTR1
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0xb2, 0x03, 0x01, 0x2C, 0x2D, // _FRMCTR2
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0xb3, 0x06, 0x01, 0x2C, 0x2D, 0x01, 0x2C, 0x2D, // _FRMCTR3
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0xb4, 0x01, 0x07, // _INVCTR line inversion
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0xc0, 0x03, 0xa2, 0x02, 0x84, // _PWCTR1 GVDD = 4.7V, 1.0uA
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0xc1, 0x01, 0xc5, // _PWCTR2 VGH=14.7V, VGL=-7.35V
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0xc2, 0x02, 0x0a, 0x00, // _PWCTR3 Opamp current small, Boost frequency
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0xc3, 0x02, 0x8a, 0x2a,
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0xc4, 0x02, 0x8a, 0xee,
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0xc5, 0x01, 0x0e, // _VMCTR1 VCOMH = 4V, VOML = -1.1V
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0x36, 0x01, 0xc8, // MADCTL Rotate display
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0x21, 0x00, // _INVON
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0x3a, 0x01, 0x05, // COLMOD - 16bit color
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0xe0, 0x10, 0x02, 0x1c, 0x07, 0x12, 0x37, 0x32, 0x29, 0x2d, 0x29, 0x25, 0x2B, 0x39, 0x00, 0x01, 0x03, 0x10, // _GMCTRP1 Gamma
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0xe1, 0x10, 0x03, 0x1d, 0x07, 0x06, 0x2E, 0x2C, 0x29, 0x2D, 0x2E, 0x2E, 0x37, 0x3F, 0x00, 0x00, 0x02, 0x10, // _GMCTRN1
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0x13, 0x80, 0x0a, // _NORON
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0x29, 0x80, 0x64 // _DISPON
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};
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// Overrides the weakly linked function from supervisor/shared/board.c
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void board_init(void) {
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busio_spi_obj_t *spi = common_hal_board_create_spi(0);
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fourwire_fourwire_obj_t *bus = &allocate_display_bus()->fourwire_bus;
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bus->base.type = &fourwire_fourwire_type;
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// see here for inspiration: https://github.com/m5stack/M5GFX/blob/33d7d3135e816a86a008fae8ab3757938cee95d2/src/M5GFX.cpp#L1350
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common_hal_fourwire_fourwire_construct(
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bus,
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spi,
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&pin_GPIO4, // DC
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&pin_GPIO7, // CS
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&pin_GPIO8, // RST
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40000000, // baudrate
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0, // polarity
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0 // phase
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);
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busdisplay_busdisplay_obj_t *display = &allocate_display()->display;
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display->base.type = &busdisplay_busdisplay_type;
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common_hal_busdisplay_busdisplay_construct(
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display,
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bus,
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240, // width (after rotation)
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135, // height (after rotation)
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40, // column start
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52, // row start
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0, // rotation
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16, // color depth
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false, // grayscale
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false, // pixels in a byte share a row. Only valid for depths < 8
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1, // bytes per cell. Only valid for depths < 8
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false, // reverse_pixels_in_byte. Only valid for depths < 8
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true, // reverse_pixels_in_word
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MIPI_COMMAND_SET_COLUMN_ADDRESS, // set column command
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MIPI_COMMAND_SET_PAGE_ADDRESS, // set row command
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MIPI_COMMAND_WRITE_MEMORY_START, // write memory command
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display_init_sequence,
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sizeof(display_init_sequence),
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&pin_GPIO9, // backlight pin
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NO_BRIGHTNESS_COMMAND,
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1.0f, // brightness
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false, // single_byte_bounds
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false, // data_as_commands
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true, // auto_refresh
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80, // native_frames_per_second
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true, // backlight_on_high
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false, // SH1107_addressing
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50000 // backlight pwm frequency
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);
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}
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bool espressif_board_reset_pin_number(gpio_num_t pin_number) {
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// Hold pin must be set high to avoid a power off when battery powered
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if (pin_number == 46) {
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// Turn on hold output
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config_pin_as_output_with_level(pin_number, true);
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return true;
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}
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return false;
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}
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// TODO: Should we turn off the display when asleep, in board_deinit() ?

‎ports/espressif/boards/m5stack_dinmeter/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) 2024 CDarius
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// SPDX-FileCopyrightText: Copyright (c) 2025 juergenpabel
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//
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// SPDX-License-Identifier: MIT
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#pragma once
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// Micropython setup
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#define MICROPY_HW_BOARD_NAME "M5Stack DinMeter"
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#define MICROPY_HW_MCU_NAME "ESP32S3"
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#define CIRCUITPY_BOARD_I2C (2)
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#define CIRCUITPY_BOARD_I2C_PIN {{.scl = &pin_GPIO12, .sda = &pin_GPIO11}, \
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{.scl = &pin_GPIO15, .sda = &pin_GPIO13}}
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#define CIRCUITPY_BOARD_SPI (1)
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#define CIRCUITPY_BOARD_SPI_PIN {{.clock = &pin_GPIO6, .mosi = &pin_GPIO5}}
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#define CIRCUITPY_I2C_ALLOW_INTERNAL_PULL_UP (1)

‎ports/espressif/boards/m5stack_dinmeter/mpconfigboard.mk‎

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USB_VID = 0x303A
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USB_PID = 0x81DD
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USB_PRODUCT = "M5stack - DinMeter"
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USB_MANUFACTURER = "M5Stack"
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IDF_TARGET = esp32s3
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CIRCUITPY_ESP_FLASH_MODE = qio
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CIRCUITPY_ESP_FLASH_FREQ = 80m
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CIRCUITPY_ESP_FLASH_SIZE = 8MB
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# Very few pins.
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CIRCUITPY_ESPCAMERA = 0
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CIRCUITPY_PARALLELDISPLAYBUS = 0

‎ports/espressif/boards/m5stack_dinmeter/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) 2020 Scott Shawcroft for Adafruit Industries
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// SPDX-FileCopyrightText: Copyright (c) 2025 Juergen Pabel
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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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#include "shared-module/displayio/__init__.h"
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CIRCUITPY_BOARD_BUS_SINGLETON(porta_i2c, i2c, 1)
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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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// Port A
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{ MP_ROM_QSTR(MP_QSTR_PORTA_SCL), MP_ROM_PTR(&pin_GPIO15) },
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{ MP_ROM_QSTR(MP_QSTR_D15), MP_ROM_PTR(&pin_GPIO15) },
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{ MP_ROM_QSTR(MP_QSTR_PORTA_SDA), MP_ROM_PTR(&pin_GPIO13) },
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{ MP_ROM_QSTR(MP_QSTR_D13), MP_ROM_PTR(&pin_GPIO13) },
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// Port B
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{ MP_ROM_QSTR(MP_QSTR_PORTB_IN), MP_ROM_PTR(&pin_GPIO1) },
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{ MP_ROM_QSTR(MP_QSTR_D1), MP_ROM_PTR(&pin_GPIO1) },
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{ MP_ROM_QSTR(MP_QSTR_A1), MP_ROM_PTR(&pin_GPIO1) },
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{ MP_ROM_QSTR(MP_QSTR_PORTB_OUT), MP_ROM_PTR(&pin_GPIO2) },
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{ MP_ROM_QSTR(MP_QSTR_D2), MP_ROM_PTR(&pin_GPIO2) },
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{ MP_ROM_QSTR(MP_QSTR_A2), MP_ROM_PTR(&pin_GPIO2) },
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// Encoder
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{ MP_ROM_QSTR(MP_QSTR_ENC_A), MP_ROM_PTR(&pin_GPIO41) },
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{ MP_ROM_QSTR(MP_QSTR_ENC_B), MP_ROM_PTR(&pin_GPIO40) },
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// Button
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{ MP_ROM_QSTR(MP_QSTR_BUTTON), MP_ROM_PTR(&pin_GPIO0) },
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{ MP_ROM_QSTR(MP_QSTR_BOOT0), MP_ROM_PTR(&pin_GPIO0) },
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{ MP_ROM_QSTR(MP_QSTR_D0), MP_ROM_PTR(&pin_GPIO0) },
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// Misc
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{ MP_ROM_QSTR(MP_QSTR_SDA), MP_ROM_PTR(&pin_GPIO11) },
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{ MP_ROM_QSTR(MP_QSTR_SCL), MP_ROM_PTR(&pin_GPIO12) },
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{ MP_ROM_QSTR(MP_QSTR_SPEAKER), MP_ROM_PTR(&pin_GPIO3) },
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{ MP_ROM_QSTR(MP_QSTR_KNOB_BUTTON), MP_ROM_PTR(&pin_GPIO42) },
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{ MP_ROM_QSTR(MP_QSTR_POWER_HOLD), MP_ROM_PTR(&pin_GPIO46) },
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// Display
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{ MP_ROM_QSTR(MP_QSTR_SCK), MP_ROM_PTR(&pin_GPIO6) },
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{ MP_ROM_QSTR(MP_QSTR_MOSI), MP_ROM_PTR(&pin_GPIO5) },
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{ MP_ROM_QSTR(MP_QSTR_TFT_CS), MP_ROM_PTR(&pin_GPIO7) },
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{ MP_ROM_QSTR(MP_QSTR_TFT_DC), MP_ROM_PTR(&pin_GPIO4) },
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{ MP_ROM_QSTR(MP_QSTR_TFT_RESET), MP_ROM_PTR(&pin_GPIO8) },
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{ MP_ROM_QSTR(MP_QSTR_TFT_BACKLIGHT), MP_ROM_PTR(&pin_GPIO9) },
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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_PORTA_I2C), MP_ROM_PTR(&board_porta_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_DISPLAY), MP_ROM_PTR(&displays[0].display)}
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};
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MP_DEFINE_CONST_DICT(board_module_globals, board_module_globals_table);

‎ports/espressif/boards/m5stack_dinmeter/sdkconfig‎

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#
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# Espressif IoT Development Framework Configuration
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#
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#
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# Component config
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#
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#
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# LWIP
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#
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# end of LWIP
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# end of Component config
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# end of Espressif IoT Development Framework Configuration

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