The firmware library for the pico-ice, a board combining a Raspberry Pi RP2040 and an Lattice iCE40.
To use this SDK, you do not need to download it, but only to drop the
pico_ice_sdk_import.cmake into your project, and add this Makefile:
cmake_minimum_required(VERSION 3.13)
## CMake configuration of pico-sdk and pico-ice-sdk
include(pico_ice_sdk_import.cmake)
project(pico_ice_firmware)
pico_sdk_init()
# CMake configuration of the application
add_executable(firmware firmware.c)
target_link_libraries(firmware pico_ice_sdk hardware_spi)
pico_add_extra_outputs(firmware)
This pico-ice-sdk and the Raspberry Pi pico-sdk will both be fetched from git.
See the complete documentation at https://pico-ice.readthedocs.io/
See the project examples on the examples directory.
To upload a new firmware image on the PR2040 (the "pico" part of "pico-ice"):
Step 1: Press and hold the "BOOT" button.
Step 2: Press and release the "RESET" button.
Step 3: Release the "BOOT" button.
Step 4: Look for an USB drive and mount it, open it, and check that there are only 2 files in it: INFO.HTML and INFO_UF2.TXT.
If you also have an CURRENT.UF2, this means you found the FPGA flashing interface, and need to retry steps 1, 2, 3.
Step 5: Copy the firmware.uf2 file you just built onto the USB drive.
Step 6: Eject the memory drive.
At this step, the firmware should be uploaded.