boards/waveshare-esp32s3-touch-lcd-128: add board support

boards/waveshare-esp32s3-touch-lcd-128/Kconfig

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+# SPDX-FileCopyrightText: 2026 Technische Universität Hamburg
+# SPDX-License-Identifier: LGPL-2.1-only
+
+config BOARD
+    default "waveshare-esp32s3-touch-lcd-128" if BOARD_WAVESHARE_ROUND_ESP32S3
+
+config BOARD_WAVESHARE_ROUND_ESP32S3
+    bool
+    default y
+    select BOARD_COMMON_ESP32S3
+    select CPU_MODEL_ESP32S3_R2
+
+source "$(RIOTBOARD)/common/esp32s3/Kconfig"

boards/waveshare-esp32s3-touch-lcd-128/Makefile

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+MODULE = board
+
+include $(RIOTBASE)/Makefile.base

boards/waveshare-esp32s3-touch-lcd-128/Makefile.dep

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+ifneq (,$(filter saul_default,$(USEMODULE)))
+  USEMODULE += saul_gpio
+endif
+
+ifneq (,$(filter disp_dev,$(USEMODULE)))
+  USEMODULE += gc9a01
+endif
+
+ifneq (,$(filter touch_dev,$(USEMODULE)))
+  USEMODULE += cst816s
+endif
+
+include $(RIOTBOARD)/common/esp32s3/stdio_esp32s3_default.dep.mk
+include $(RIOTBOARD)/common/esp32s3/Makefile.dep
+
+USEMODULE += boards_common_esp32s3

boards/waveshare-esp32s3-touch-lcd-128/Makefile.features

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+# the board uses an ESP32-S3R2 with 2 MB embedded SPI RAM.
+CPU_MODEL = esp32s3_r2
+
+# common board and CPU features
+include $(RIOTBOARD)/common/esp32s3/Makefile.features
+
+# peripherals provided by the board
+FEATURES_PROVIDED += periph_adc
+FEATURES_PROVIDED += periph_i2c
+FEATURES_PROVIDED += periph_spi
+FEATURES_PROVIDED += periph_usbdev
+
+# other features provided by the board
+FEATURES_PROVIDED += esp_spi_ram

boards/waveshare-esp32s3-touch-lcd-128/Makefile.include

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+PORT_LINUX ?= /dev/ttyACM0
+
+OPENOCD_CONFIG ?= board/esp32s3-builtin.cfg

boards/waveshare-esp32s3-touch-lcd-128/board.c

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+/*
+ * SPDX-FileCopyrightText: 2023 Gunar Schorcht
+ * SPDX-License-Identifier: LGPL-2.1-only
+ */
+
+/**
+ * @ingroup     boards_waveshare-esp32s3-touch-lcd-128
+ * @{
+ *
+ * @file
+ * @brief       Board specific initializations for the Waveshare ESP32S3 round display board (Touch version)
+ *
+ * @author      Gunar Schorcht <gunar@schorcht.net>
+ */
+
+#include "board.h"
+
+void board_init(void)
+{
+#if MODULE_GC9A01
+    gpio_init(LCD_BACKLIGHT, GPIO_OUT);
+#endif
+}

boards/waveshare-esp32s3-touch-lcd-128/doc.md

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+<!--
+SPDX-FileCopyrightText: 2023 Gunar Schorcht
+SPDX-FileCopyrightText: 2026 Technische Universität Hamburg
+SPDX-License-Identifier: LGPL-2.1-only
+-->
+
+@defgroup   boards_waveshare-esp32s3-touch-lcd-128 Waveshare ESP32-S3-Touch-LCD-1.28
+@ingroup    boards_esp32s3
+@brief      Support for the Waveshare ESP32-S3-Touch-LCD-1.28 board
+@author     Gunar Schorcht <gunar@schorcht.net>
+@author     Yahia Abdella <yahia.abdella@tuhh.de>
+
+\section waveshare_round_esp32s3 Waveshare ESP32-S3-Touch-LCD-1.28
+
+## Table of Contents {#waveshare_round_esp32s3_toc}
+
+-# [Overview](#waveshare_round_esp32s3_overview)
+-# [Hardware](#waveshare_round_esp32s3_hardware)
+    -# [MCU](#waveshare_round_esp32s3_mcu)
+    -# [Board Configuration](#waveshare_round_esp32s3_board_configuration)
+    -# [Board Pinout](#waveshare_round_esp32s3_pinout)
+-# [Flashing the Device](#waveshare_round_esp32s3_flashing)
+
+## Overview {#waveshare_round_esp32s3_overview}
+
+The Waveshare ESP32-S3-Touch-LCD-1.28 is a compact development board built around the
+ESP32-S3 microcontroller with an integrated 1.28-inch round TFT LCD display and
+capacitive touch panel.
+
+\image html https://www.waveshare.net/photo/development-board/ESP32-S3-Touch-LCD-1.28/ESP32-S3-Touch-LCD-1.28-1.jpg "Waveshare ESP32-S3-Touch-LCD-1.28" width=400px
+
+The main features of the board are:
+
+- ESP32-S3-N8R2 SoC with 2.4 GHz WiFi (802.11 b/g/n) and Bluetooth 5, BLE
+- 16 MB Flash
+- 2 MB PSRAM
+- 1.28-inch 240x240 round IPS LCD (GC9A01 driver)
+- Capacitive touch panel (CST816S controller)
+- 6-axis IMU (QMI8658 accelerometer + gyroscope)
+- USB Type-C connector
+- Battery charging circuit with battery voltage monitoring
+- BOOT button (active low, directly usable as user button)
+
+[Back to table of contents](#waveshare_round_esp32s3_toc)
+
+## Hardware {#waveshare_round_esp32s3_hardware}
+
+This section describes
+
+- the [MCU](#waveshare_round_esp32s3_mcu),
+- the default [board configuration](#waveshare_round_esp32s3_board_configuration),
+- the [board pinout](#waveshare_round_esp32s3_pinout).
+
+[Back to table of contents](#waveshare_round_esp32s3_toc)
+
+### MCU {#waveshare_round_esp32s3_mcu}
+
+Most features of the board are provided by the ESP32-S3 SoC. For detailed
+information about the ESP32-S3 SoC variant (family) and ESP32x SoCs,
+see section \ref esp32_mcu_esp32 "ESP32 SoC Series".
+
+[Back to table of contents](#waveshare_round_esp32s3_toc)
+
+### Board Configuration {#waveshare_round_esp32s3_board_configuration}
+
+The board integrates a 1.28-inch round IPS LCD driven by a GC9A01 display controller
+via SPI, a CST816S capacitive touch controller connected via I2C, and a QMI8658
+6-axis IMU also connected via I2C. A BOOT button on GPIO0 is directly usable
+as a user button.
+
+The default board configuration provides:
+
+- 1 x ADC channel (battery voltage monitoring)
+- 1 x SPI (display)
+- 1 x I2C (touch controller and IMU)
+- 1 x UART (console)
+
+The following table shows the default board configuration sorted by
+peripheral function. This configuration can be overridden by
+\ref esp32_application_specific_configurations
+"application-specific configurations".
+
+<center>
+Function        | GPIOs  | Remarks | Configuration
+:---------------|:-------|:--------|:----------------------------------
+BTN0            | GPIO0  | | |
+ADC_LINE(0)     | GPIO1  | Battery voltage | \ref esp32_adc_channels "ADC Channels"
+SPI_DEV(0) CLK  | GPIO10 | LCD SCLK, GC9A01 | \ref esp32_spi_interfaces "SPI Interfaces"
+SPI_DEV(0) MOSI | GPIO11 | LCD SDA, GC9A01 | \ref esp32_spi_interfaces "SPI Interfaces"
+SPI_DEV(0) MISO | GPIO12 | LCD SDO, GC9A01 | \ref esp32_spi_interfaces "SPI Interfaces"
+SPI_DEV(0) CS0  | GPIO9  | LCD CS, GC9A01 | \ref esp32_spi_interfaces "SPI Interfaces"
+LCD DC          | GPIO8  | GC9A01 data/command | |
+LCD RST         | GPIO14 | GC9A01 reset | |
+LCD BL          | GPIO2  | Backlight control | |
+I2C_DEV(0) SCL  | GPIO7  | Touch + IMU | \ref esp32_i2c_interfaces "I2C Interfaces"
+I2C_DEV(0) SDA  | GPIO6  | Touch + IMU | \ref esp32_i2c_interfaces "I2C Interfaces"
+Touch IRQ       | GPIO5  | CST816S interrupt | |
+Touch RST       | GPIO13 | CST816S reset | |
+UART_DEV(0) TxD | GPIO43 | Console (fixed) | \ref esp32_uart_interfaces "UART interfaces"
+UART_DEV(0) RxD | GPIO44 | Console (fixed) | \ref esp32_uart_interfaces "UART interfaces"
+</center>
+\n
+
+For detailed information about the peripheral configurations of ESP32-S3
+boards, see section \ref esp32_peripherals "Common Peripherals".
+
+[Back to table of contents](#waveshare_round_esp32s3_toc)
+
+### Board Pinout {#waveshare_round_esp32s3_pinout}
+
+The following figures show the board hardware layout.
+
+@image html https://docs.waveshare.com/assets/images/Esp32-s3-touch-lcd-1.28-003-c7bcf4bd1440b55a43abb060ad67d705.webp "Waveshare ESP32-S3-Touch-LCD-1.28 Hardware Layout" width=600px
+
+@image html https://docs.waveshare.com/assets/images/ESP32-S3-Touch-LCD-1.28-pin-e2103bcf84f511752bbc41ceb86bbf56.webp "Waveshare ESP32-S3-Touch-LCD-1.28 Hardware Layout" width=600px
+
+The board schematic and additional documentation can be found on the
+[Waveshare Wiki](https://www.waveshare.com/wiki/ESP32-S3-Touch-LCD-1.28).
+
+[Back to table of contents](#waveshare_round_esp32s3_toc)
+
+## Flashing the Device {#waveshare_round_esp32s3_flashing}
+
+Flashing RIOT is quite easy. The board has a USB-C connector with
+reset/boot/flash logic. Just connect the board to your host computer
+and run:
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+BOARD=waveshare_round_esp32s3 make flash ...
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+For detailed information about ESP32-S3 as well as configuring and compiling
+RIOT for ESP32-S3 boards, see \ref esp32_riot.
+
+[Back to table of contents](#esp32s3_devkit_toc)

boards/waveshare-esp32s3-touch-lcd-128/include/board.h

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+/*
+ * SPDX-FileCopyrightText: 2023 Gunar Schorcht
+ * SPDX-FileCopyrightText: 2026 Technische Universität Hamburg
+ * SPDX-License-Identifier: LGPL-2.1-only
+ */
+
+#pragma once
+
+/**
+ * @ingroup     boards_waveshare-esp32s3-touch-lcd-128
+ * @{
+ *
+ * @file
+ * @brief       Board specific definitions for the Waveshare ESP32-S3 1.28-inch round display board (Touch version)
+ *
+ * @author      Gunar Schorcht <gunar@schorcht.net>
+ * @author      Yahia Abdella <yahia.abdella@tuhh.de>
+ */
+
+/**
+ * @name    Button pin definitions
+ * @{
+ */
+
+/**
+ * @brief   Default button GPIO pin definition
+ *
+ * The board has a BOOT button connected to GPIO0, which can be
+ * used as button during normal operation. Since the GPIO0 pin is pulled up,
+ * the button signal is inverted, i.e., pressing the button will give a
+ * low signal.
+ */
+#define BTN0_PIN        GPIO0
+
+/**
+ * @brief   Default button GPIO mode definition
+ */
+#define BTN0_MODE       GPIO_IN_PU
+
+/**
+ * @brief   Default interrupt flank definition for the button GPIO
+ */
+#ifndef BTN0_INT_FLANK
+#  define BTN0_INT_FLANK  GPIO_FALLING
+#endif
+
+/**
+ * @brief   Definition for compatibility with previous versions
+ */
+#define BUTTON0_PIN     BTN0_PIN
+
+/** @} */
+
+/**
+ * @name    LCD configuration
+ *
+ * The board features a 240x240 TFT display being driven by a GC9A01 LCD driver
+ * The display driver is connected via SPI
+ *
+ * @{
+ */
+#if MODULE_GC9A01
+#  define LCD_DC              GPIO8     /**< LCD DC signal */
+#  define LCD_CS              GPIO9     /**< LCD EN signal */
+#  define LCD_RST             GPIO14    /**< LCD RST signal */
+#  define LCD_BACKLIGHT       GPIO2     /**< LCD BL signal */
+
+#  define GC9A01_PARAM_CS               LCD_CS
+#  define GC9A01_PARAM_DCX              LCD_DC
+#  define GC9A01_PARAM_RST              LCD_RST
+#  define GC9A01_PARAM_NUM_LINES        240
+#  define GC9A01_PARAM_RGB_CHANNELS     240
+#  define GC9A01_PARAM_INVERTED         1
+#  define GC9A01_PARAM_RGB              0
+#  ifndef GC9A01_PARAM_ROTATION
+#    define GC9A01_PARAM_ROTATION       GC9A01_ROTATION_VERT
+#  endif
+#  ifndef GC9A01_PARAM_SPI_CLK
+#    define GC9A01_PARAM_SPI_CLK        SPI_CLK_10MHZ
+#  endif
+
+#  define BACKLIGHT_ON                gpio_set(LCD_BACKLIGHT)
+#  define BACKLIGHT_OFF               gpio_clear(LCD_BACKLIGHT)
+#endif
+/** @} */
+
+/**
+ * @name    Touch panel configuration
+ *
+ * The board features a CST816S touch display driver
+ * The touch chip is connected via I2C
+ *
+ * @{
+ */
+#if MODULE_CST816S
+#  define CST816S_PARAM_I2C_DEV       I2C_DEV(0)
+#  define CST816S_PARAM_IRQ           GPIO5
+#  define CST816S_PARAM_RESET         GPIO13
+#endif
+/** @} */
+
+/**
+ * @name    IMU configuration
+ *
+ * The board features a QMI8658 interial measurement unit
+ * The IMU is connected via I2C
+ *
+ * @{
+ */
+#if MODULE_QMI8658
+#  define QMI8658_PARAM_I2C       I2C_DEV(0)
+#endif
+/** @} */
+
+/* include common board definitions as last step */
+#include "board_common.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+/** @} */

boards/waveshare-esp32s3-touch-lcd-128/include/gpio_params.h

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+/*
+ * SPDX-FileCopyrightText: 2023 Gunar Schorcht
+ * SPDX-License-Identifier: LGPL-2.1-only
+ */
+
+#pragma once
+
+/**
+ * @ingroup     boards_waveshare-esp32s3-touch-lcd-128
+ * @brief       Board specific configuration of direct mapped GPIOs
+ * @file
+ * @author      Gunar Schorcht <gunar@schorcht.net>
+ * @{
+ */
+
+#include "board.h"
+#include "saul/periph.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief   Boot button configuration
+ */
+static const  saul_gpio_params_t saul_gpio_params[] =
+{
+    {
+        .name = "BOOT",
+        .pin = BTN0_PIN,
+        .mode = BTN0_MODE,
+        .flags = SAUL_GPIO_INVERTED
+    },
+};
+
+#ifdef __cplusplus
+}
+#endif
+
+/** @} */