feat: add wave_7b board support

Author: pythcoiner

.github/workflows/test-all-builds.yml

@@ -13,7 +13,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        board: [wave_4b, wave_35, wave_5, wave_43, crowpanel]
+        board: [wave_4b, wave_35, wave_5, wave_43, crowpanel, wave_7b]
     name: build (${{ matrix.board }})
     steps:
     - name: Checkout repo
@@ -88,6 +88,11 @@ jobs:
       with:
         name: firmware-crowpanel
         path: site/flash/firmware/crowpanel
+    - name: Download wave_7b firmware
+      uses: actions/download-artifact@v4.1.3
+      with:
+        name: firmware-wave_7b
+        path: site/flash/firmware/wave_7b
     - name: Stage branding assets
       run: cp -r branding site/branding
     - name: Upload Pages artifact

.gitignore

@@ -5,6 +5,7 @@ build_wave_4b/
 build_wave_43/
 build_wave_5/
 build_crowpanel/
+build_wave_7b/
 sdkconfig
 sdkconfig.old
 managed_components/

.justfile

@@ -1,12 +1,12 @@
 export IDF_PATH := env_var("HOME") + "/esp/esp-idf"
 export IDF_PATH_FORCE := "1"
 
-# Board parameter: "wave_4b" (default), "wave_35", "wave_5", "wave_43", or "crowpanel"
-# Usage: just build wave_35, just flash wave_4b, just build wave_5, just build wave_43
+# Board parameter: "wave_4b" (default), "wave_35", "wave_5", "wave_43", "crowpanel", or "wave_7b"
+# Usage: just build wave_35, just flash wave_4b, just build wave_5, just build wave_7b
 # Each board builds into its own build_<board>/ directory, so switching
 # boards is instant (no clean required) and per-board builds stay incremental.
 
-boards := "wave_4b wave_35 wave_5 wave_43 crowpanel"
+boards := "wave_4b wave_35 wave_5 wave_43 crowpanel wave_7b"
 
 _check_board board:
     #!/usr/bin/env sh
@@ -35,7 +35,7 @@ test:
     ./scripts/test.sh
 
 clean:
-    rm -fRd build build_wave_4b build_wave_35 build_wave_5 build_wave_43 build_crowpanel
+    rm -fRd build build_wave_4b build_wave_35 build_wave_5 build_wave_43 build_crowpanel build_wave_7b
     rm -f sdkconfig
     rm -fRd compile_commands.json
     rm -fRd .cache/
@@ -70,14 +70,14 @@ site port="8000":
     python3 -m http.server {{port}} -d site
 
 # Simulator board resolution mapping
-# wave_4b: 720x720, wave_35: 320x480, wave_5: 720x1280, wave_43: 480x800, crowpanel: 1024x600
+# wave_4b: 720x720, wave_35: 320x480, wave_5: 720x1280, wave_43: 480x800, crowpanel: 1024x600, wave_7b: 1024x600
 _sim_h_res board:
     #!/usr/bin/env sh
-    case "{{board}}" in wave_35) echo 320;; wave_5) echo 720;; wave_43) echo 480;; crowpanel) echo 1024;; *) echo 720;; esac
+    case "{{board}}" in wave_35) echo 320;; wave_5) echo 720;; wave_43) echo 480;; crowpanel) echo 1024;; wave_7b) echo 1024;; *) echo 720;; esac
 
 _sim_v_res board:
     #!/usr/bin/env sh
-    case "{{board}}" in wave_35) echo 480;; wave_5) echo 1280;; wave_43) echo 800;; crowpanel) echo 600;; *) echo 720;; esac
+    case "{{board}}" in wave_35) echo 480;; wave_5) echo 1280;; wave_43) echo 800;; crowpanel) echo 600;; wave_7b) echo 600;; *) echo 720;; esac
 
 # Build the desktop simulator
 sim-build board="wave_4b": (_check_board board)

CHANGELOG.md

@@ -1,5 +1,10 @@
 # Changelog
 
+## [Unreleased]
+
+### Added
+- Support for Waveshare ESP32-P4-WiFi6-Touch-LCD-7B (wave_7b, 1024x600 MIPI DSI, EK79007)
+
 ## [0.0.16] - 2026-08-11
 
 ### Added

CONTRIBUTING.md

@@ -38,7 +38,7 @@ Do not introduce UI dependencies into core modules. If a core function needs use
 
 The project uses two static analysis tools to catch bugs early. Both are available after sourcing ESP-IDF (`source ~/esp/esp-idf/export.sh`), except `cppcheck` which is installed separately.
 
-Both tools cover `main/` and first-party components (`bbqr`, `cUR`, `k_quirc`, `sd_card`, `video`, `wave_4b`, `wave_35`, `wave_43`, `crowpanel`). `libwally-core` and `wave_5` are excluded (third-party upstream code: libwally-core is the original; wave_5 ships a vendored ST-style HX8394 driver).
+Both tools cover `main/` and first-party components (`bbqr`, `cUR`, `k_quirc`, `sd_card`, `video`, `wave_4b`, `wave_35`, `wave_43`, `crowpanel`, `wave_7b`). `libwally-core` and `wave_5` are excluded (third-party upstream code: libwally-core is the original; wave_5 ships a vendored ST-style HX8394 driver).
 
 **clang-tidy** (recommended, catches real bugs):
 ```bash
@@ -52,6 +52,7 @@ clang-tidy -p build/compile_commands.json main/core/wallet.c
 find main components/bbqr components/cUR components/k_quirc \
      components/sd_card components/video \
      components/wave_4b components/wave_35 components/wave_43 components/crowpanel \
+     components/wave_7b \
      -name '*.c' -not -path '*/build/*' 2>/dev/null | \
   xargs -P$(nproc) -I{} clang-tidy -p build/compile_commands.json {}
 ```
@@ -66,6 +67,7 @@ The project `.clang-tidy` config enables bug-finding and security checks tuned f
 cppcheck main/ components/bbqr components/cUR components/k_quirc \
   components/sd_card components/video \
   components/wave_4b components/wave_35 components/wave_43 components/crowpanel \
+  components/wave_7b \
   --enable=warning,style,performance \
   --suppress=missingIncludeSystem \
   --suppress=missingInclude \

README.md

@@ -19,7 +19,7 @@ It signs PSBTs for single-sig, multisig and miniscript policies on both native s
 
 ## Hardware
 
-Kern supports four Waveshare ESP32-P4 boards and one Elecrow CrowPanel board:
+Kern supports five Waveshare ESP32-P4 boards and one Elecrow CrowPanel board:
 
 | Board | Display | Touch | Camera |
 |-------|---------|-------|--------|
@@ -28,6 +28,7 @@ Kern supports four Waveshare ESP32-P4 boards and one Elecrow CrowPanel board:
 | [ESP32-P4-WiFi6-Touch-LCD-5](https://www.waveshare.com/esp32-p4-wifi6-touch-lcd-5.htm) (`wave_5`) | 720x1280 MIPI DSI | GT911 | OV5647, included |
 | [ESP32-P4-WiFi6-Touch-LCD-4.3](https://www.waveshare.com/esp32-p4-wifi6-touch-lcd-4.3.htm) (`wave_43`) | 480x800 MIPI DSI | GT911 | OV5647, included |
 | [CrowPanel Advanced 10.1" ESP32-P4](https://github.com/Elecrow-RD/CrowPanel-Advanced-10.1inch-ESP32-P4-HMI-AI-Display-1024x600-IPS-Touch-Screen) and 7" siblings (`crowpanel`) | 1024x600 MIPI DSI | GT911 | SC2336, included |
+| [ESP32-P4-WiFi6-Touch-LCD-7B](https://www.waveshare.com/esp32-p4-wifi6-touch-lcd-7b.htm) (`wave_7b`) | 1024x600 MIPI DSI | GT911 | OV5647, sold separately |
 
 ESP32-P4 does not contain radio (WiFi, BLE), but these boards have a radio in a secondary chip (ESP32-C6 mini). Exploring radio-less, simpler and cheaper ESP32-P4-only boards is part of the project's hardware research.
 
@@ -71,14 +72,15 @@ git submodule update --init --recursive
 
 ### Building the Project
 
-Build with [just](https://github.com/casey/just) (recommended) or `idf.py` directly. All `just` commands accept a board parameter, one of `wave_4b` (default), `wave_35`, `wave_5`, `wave_43`, or `crowpanel`:
+Build with [just](https://github.com/casey/just) (recommended) or `idf.py` directly. All `just` commands accept a board parameter, one of `wave_4b` (default), `wave_35`, `wave_5`, `wave_43`, `crowpanel`, or `wave_7b`:
 
 ```bash
 just build              # Build for wave_4b (default)
 just build wave_35      # Build for wave_35
 just build wave_5       # Build for wave_5
 just build wave_43      # Build for wave_43
 just build crowpanel    # Build for CrowPanel 7" / 10.1"
+just build wave_7b      # Build for wave_7b
 just flash wave_5       # Flash for wave_5
 just monitor            # Serial monitor
 just clean              # Wipe all build_<board> dirs + sdkconfig
@@ -101,6 +103,9 @@ idf.py -D 'SDKCONFIG_DEFAULTS=sdkconfig.defaults;sdkconfig.defaults.wave_43' bui
 
 # crowpanel (7" / 10.1")
 idf.py -D 'SDKCONFIG_DEFAULTS=sdkconfig.defaults;sdkconfig.defaults.crowpanel' build
+
+# wave_7b
+idf.py -D 'SDKCONFIG_DEFAULTS=sdkconfig.defaults;sdkconfig.defaults.wave_7b' build
 ```
 
 > **Note:** `just` builds each board into its own `build_<board>/` directory, so switching boards needs no clean. The raw `idf.py` commands above share the default `build/` directory and `sdkconfig`: run `idf.py fullclean && rm sdkconfig` when switching boards that way.
@@ -117,6 +122,7 @@ just sim wave_35        # Run simulator as wave_35 (320x480)
 just sim wave_5         # Run simulator as wave_5 (720x1280)
 just sim wave_43        # Run simulator as wave_43 (480x800)
 just sim crowpanel      # Run simulator as crowpanel (1024x600)
+just sim wave_7b        # Run simulator as wave_7b (1024x600)
 just sim-build wave_35  # Build only
 just sim-clean          # Remove simulator build artifacts
 just sim-reset          # Wipe simulator data (factory reset)
@@ -218,6 +224,7 @@ Pre-release firmware is provided **for research and testing purposes only**. Any
 | `wave_5` | Waveshare ESP32-P4-WiFi6-Touch-LCD-5 | 720x1280 MIPI DSI |
 | `wave_43` | Waveshare ESP32-P4-WiFi6-Touch-LCD-4.3 | 480x800 MIPI DSI |
 | `crowpanel` | CrowPanel Advanced 7" / 10.1" ESP32-P4 | 1024x600 MIPI DSI |
+| `wave_7b` | Waveshare ESP32-P4-WiFi6-Touch-LCD-7B | 1024x600 MIPI DSI |
 
 ### Requirements
 

components/video/CMakeLists.txt

@@ -1,5 +1,5 @@
 idf_component_register(
     SRCS "video.c"
     INCLUDE_DIRS "."
-    REQUIRES esp_cam_sensor esp_video esp_sccb_intf wave_4b wave_35 wave_5 wave_43 crowpanel
+    REQUIRES esp_cam_sensor esp_video esp_sccb_intf wave_4b wave_35 wave_5 wave_43 crowpanel wave_7b
 )

components/wave_7b/CMakeLists.txt

@@ -0,0 +1,12 @@
+if(CONFIG_KERN_BOARD_WAVE_7B)
+    idf_component_register(
+        SRCS "wave_7b.c"
+        INCLUDE_DIRS "include"
+        REQUIRES driver esp_lcd esp_driver_ledc bsp_common
+        PRIV_REQUIRES esp_lcd_touch_gt911
+    )
+else()
+    idf_component_register(
+        REQUIRES driver esp_lcd esp_driver_ledc bsp_common
+    )
+endif()

components/wave_7b/idf_component.yml

@@ -0,0 +1,15 @@
+dependencies:
+  idf:
+    version: '>=5.4'
+  esp_lcd_touch_gt911: ^1
+  espressif/esp_lvgl_adapter:
+    version: '>=0.5.1'
+    public: true
+  lvgl/lvgl: '>=8,<10'
+  espressif/esp_lcd_ek79007:
+    version: '>=1.0.2'
+
+description: Minimal BSP for Waveshare ESP32-P4-WiFi6-Touch-LCD-7B (1024x600 MIPI DSI, EK79007, GT911)
+targets:
+- esp32p4
+version: 1.0.0

components/wave_7b/include/bsp/display.h

@@ -0,0 +1,50 @@
+#pragma once
+#include "esp_lcd_mipi_dsi.h"
+#include "esp_lcd_types.h"
+#include "sdkconfig.h"
+
+/* LCD color formats */
+#define ESP_LCD_COLOR_FORMAT_RGB565 (1)
+#define ESP_LCD_COLOR_FORMAT_RGB888 (2)
+
+/* LCD display color format */
+#if CONFIG_BSP_LCD_COLOR_FORMAT_RGB888
+#define BSP_LCD_COLOR_FORMAT (ESP_LCD_COLOR_FORMAT_RGB888)
+#else
+#define BSP_LCD_COLOR_FORMAT (ESP_LCD_COLOR_FORMAT_RGB565)
+#endif
+/* LCD display color bytes endianness */
+#define BSP_LCD_BIGENDIAN (0)
+/* LCD display color bits */
+#define BSP_LCD_BITS_PER_PIXEL (16)
+/* LCD display color space */
+#define BSP_LCD_COLOR_SPACE (LCD_RGB_ELEMENT_ORDER_RGB)
+
+#define BSP_LCD_H_RES (1024)
+#define BSP_LCD_V_RES (600)
+#define BSP_LCD_MIPI_DSI_LANE_BITRATE_MBPS (1000)
+
+#define BSP_LCD_MIPI_DSI_LANE_NUM (2)
+#define BSP_MIPI_DSI_PHY_PWR_LDO_CHAN (3)
+#define BSP_MIPI_DSI_PHY_PWR_LDO_VOLTAGE_MV (2500)
+
+typedef struct {
+  int dummy;
+} bsp_display_config_t;
+
+typedef struct {
+  esp_lcd_dsi_bus_handle_t mipi_dsi_bus;
+  esp_lcd_panel_io_handle_t io;
+  esp_lcd_panel_handle_t panel;
+  esp_lcd_panel_handle_t control;
+} bsp_lcd_handles_t;
+
+esp_err_t bsp_display_new(const bsp_display_config_t *config,
+                          esp_lcd_panel_handle_t *ret_panel,
+                          esp_lcd_panel_io_handle_t *ret_io);
+esp_err_t bsp_display_new_with_handles(const bsp_display_config_t *config,
+                                       bsp_lcd_handles_t *ret_handles);
+esp_err_t bsp_display_brightness_init(void);
+esp_err_t bsp_display_brightness_set(int brightness_percent);
+esp_err_t bsp_display_backlight_on(void);
+esp_err_t bsp_display_backlight_off(void);