Remove DHT22 polling and display output from EngineDemo

Examples/EngineDemo/CMakeLists.txt

@@ -0,0 +1,68 @@
+cmake_minimum_required(VERSION 3.18.4)
+include($ENV{PICO_SDK_PATH}/external/pico_sdk_import.cmake)
+
+project(engine_demo_example C CXX ASM)
+set(CMAKE_C_STANDARD 11)
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_EXPORT_COMPILE_COMMANDS ON CACHE BOOL "Export compile_commands.json" FORCE)
+
+pico_sdk_init()
+
+add_library(display_engine STATIC
+    ../../src/Font/font_data.c
+    ../../src/core/display.c
+    ../../src/core/display_transport.c
+    ../../src/core/display_driver.c
+    ../../src/render/context.c
+    ../../src/render/line.c
+    ../../src/render/grid.c
+    ../../src/render/sine_wave.c
+    ../../src/render/bezier.c
+)
+
+target_include_directories(display_engine PUBLIC
+    ../../include
+    ../../include/display
+)
+
+target_link_libraries(display_engine PUBLIC
+    pico_stdlib
+    hardware_spi
+    hardware_dma
+    hardware_timer
+    pico_multicore
+)
+
+# Display pin mapping (single source of truth for this example).
+set(DISPLAY_SPI_PORT spi1)
+set(DISPLAY_PIN_MOSI 15)
+set(DISPLAY_PIN_SCK 14)
+set(DISPLAY_PIN_CS 13)
+set(DISPLAY_PIN_DC 12)
+set(DISPLAY_PIN_RST 11)
+set(DISPLAY_PIN_BL 10)
+# Available values: DISPLAY_TYPE_ST7789, DISPLAY_TYPE_ILI9341
+set(DISPLAY_TYPE "DISPLAY_TYPE_ILI9341" CACHE STRING "Display controller backend")
+set_property(CACHE DISPLAY_TYPE PROPERTY STRINGS DISPLAY_TYPE_ST7789 DISPLAY_TYPE_ILI9341)
+
+# Pass display mapping into display backend without editing engine sources.
+target_compile_definitions(display_engine PUBLIC
+    DISPLAY_TYPE=${DISPLAY_TYPE}
+    DISPLAY_SPI_PORT=${DISPLAY_SPI_PORT}
+    DISPLAY_PIN_MOSI=${DISPLAY_PIN_MOSI}
+    DISPLAY_PIN_SCK=${DISPLAY_PIN_SCK}
+    DISPLAY_PIN_CS=${DISPLAY_PIN_CS}
+    DISPLAY_PIN_DC=${DISPLAY_PIN_DC}
+    DISPLAY_PIN_RST=${DISPLAY_PIN_RST}
+    DISPLAY_PIN_BL=${DISPLAY_PIN_BL}
+)
+
+add_executable(${PROJECT_NAME}
+    src/main.c
+)
+
+target_link_libraries(${PROJECT_NAME}
+    display_engine
+)
+
+pico_add_extra_outputs(${PROJECT_NAME})