Toying around with a 4.2 in. e-Paper module from Waveshare and the Raspberry Pi Pico. Maybe it'll become a library some day.
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# == DO NEVER EDIT THE NEXT LINES for Raspberry Pi Pico VS Code Extension to work ==
if(WIN32)
set(USERHOME $ENV{USERPROFILE})
else()
set(USERHOME $ENV{HOME})
endif()
set(PICO_SDK_PATH ${USERHOME}/.pico-sdk/sdk/2.0.0)
set(PICO_TOOLCHAIN_PATH ${USERHOME}/.pico-sdk/toolchain/13_2_Rel1)
set(pioasm_HINT ${USERHOME}/.pico-sdk/tools/2.0.0/pioasm)
if(EXISTS ${pioasm_HINT})
set(pioasm_DIR ${pioasm_HINT})
endif()
set(picotool_HINT ${USERHOME}/.pico-sdk/picotool/2.0.0/picotool)
if(EXISTS ${picotool_HINT})
set(picotool_DIR ${picotool_HINT})
endif()
if(PICO_TOOLCHAIN_PATH MATCHES "RISCV")
set(PICO_PLATFORM rp2350-riscv CACHE STRING "Pico Platform")
if(PICO_TOOLCHAIN_PATH MATCHES "COREV")
set(PICO_COMPILER pico_riscv_gcc_zcb_zcmp)
endif()
endif()
# ====================================================================================
# Generated Cmake Pico project file
cmake_minimum_required(VERSION 3.13)
set(CMAKE_C_STANDARD 11)
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_BUILD_TYPE Debug)
set(PICO_DEOPTIMIZED_DEBUG 1)
# Initialise pico_sdk from installed location
# (note this can come from environment, CMake cache etc)
include($ENV{PICO_SDK_PATH}/external/pico_sdk_import.cmake)
# Pull in Raspberry Pi Pico SDK (must be before project)
include(pico_sdk_import.cmake)
project(epaper C CXX ASM)
# Initialise the Raspberry Pi Pico SDK
pico_sdk_init()
add_subdirectory(./epd)
# Add executable. Default name is the project name, version 0.1
add_executable(${PROJECT_NAME} epaper.c epd0.c)
pico_set_program_name(${PROJECT_NAME} "epaper")
pico_set_program_version(${PROJECT_NAME} "0.1")
pico_enable_stdio_uart(${PROJECT_NAME} 1)
pico_enable_stdio_usb(${PROJECT_NAME} 0)
# Add the standard library to the build
target_link_libraries(${PROJECT_NAME} pico_stdlib)
# Add any user requested libraries
target_link_libraries(${PROJECT_NAME}
hardware_spi
hardware_dma
hardware_pio
pico_rand
epd
)
pico_add_extra_outputs(${PROJECT_NAME})