Add pw_display_driver_mipi for the mimxrt595 target

Major changes in this CL:
* Add a MIPI DSI display driver: pw_display_driver_mipi.
* Add pw_mipi_dsi which is a generic mipi_dsi module somewhat
  similar to pw_spi.
* Add pw_mipi_dsi_mcuxpresso which is a MCUxpresso implementtion
  of pw_mipi_dsi.
* Switched pw_display_driver from Update to GetFramebuffer/
  ReleaseFramebuffer. This is needed because the MCUxpresso
  MIPI DSI API manages the framebuffer and not the application.

Change-Id: Icf386dc1b1b70463a53f89858fb2603398e5f547
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/124830
Reviewed-by: Anthony DiGirolamo <tonymd@google.com>
Commit-Queue: Chris Mumford <cmumford@google.com>
43 files changed
tree: 433ee85dd6058ccb65d026ef81748c9d8d0f4c19
  1. applications/
  2. build_overrides/
  3. infra/
  4. pw_board_led/
  5. pw_board_led_arduino/
  6. pw_board_led_host/
  7. pw_board_led_mimxrt595_evk/
  8. pw_board_led_pico/
  9. pw_board_led_stm32cube/
  10. pw_board_led_stm32f429i_disc1/
  11. pw_digital_io_arduino/
  12. pw_digital_io_null/
  13. pw_digital_io_pico/
  14. pw_digital_io_stm32cube/
  15. pw_display_driver/
  16. pw_display_driver_ili9341/
  17. pw_display_driver_imgui/
  18. pw_display_driver_mipi/
  19. pw_display_driver_null/
  20. pw_display_driver_st7735/
  21. pw_display_driver_st7789/
  22. pw_graphics/
  23. pw_mipi_dsi/
  24. pw_mipi_dsi_mcuxpresso/
  25. pw_spi_arduino/
  26. pw_spi_pico/
  27. pw_spi_stm32cube/
  28. pw_spin_delay/
  29. pw_spin_delay_arduino/
  30. pw_spin_delay_host/
  31. pw_spin_delay_mcuxpresso/
  32. pw_spin_delay_pico/
  33. pw_spin_delay_stm32cube/
  34. pw_spin_delay_stm32f429i_disc1/
  35. targets/
  36. third_party/
  37. tools/
  38. .gitattributes
  39. .gitignore
  40. .gitmodules
  41. .gn
  42. activate.bat
  43. banner.txt
  44. bootstrap.bat
  45. bootstrap.sh
  46. BUILD.gn
  47. BUILDCONFIG.gn
  48. env_setup.json
  49. navbar.md
  50. OWNERS
  51. PW_PLUGINS
  52. README.md
README.md

Pigweed Experimental

This repository contains experimental pigweed modules.

Repository setup

Clone this repo with --recursive to get all required submodules.

git clone --recursive https://pigweed.googlesource.com/pigweed/experimental

This will pull the Pigweed source repository into third_party/pigweed. If you already cloned but forgot to --recursive run git submodule update --init to pull all submodules.

pw_graphics

The //pw_graphics folder contains some libraries for drawing to an RGB565 framebuffer and displaying it on various platforms.

The demo applications that make use of these libraries are:

Build instructions

First time setup:

git clone --recursive https://pigweed.googlesource.com/pigweed/experimental
cd experimental
. ./bootstrap.sh
pw package install imgui
pw package install glfw
pw package install stm32cube_f4
pw package install pico_sdk

STM32F429-DISC1

Compile:

gn gen out --export-compile-commands --args="
  dir_pw_third_party_stm32cube_f4=\"$PW_PROJECT_ROOT/environment/packages/stm32cube_f4\"
"
ninja -C out

Flash:

openocd -f third_party/pigweed/targets/stm32f429i_disc1/py/stm32f429i_disc1_utils/openocd_stm32f4xx.cfg -c "program out/stm32f429i_disc1_stm32cube_debug/obj/applications/terminal_display/bin/terminal_demo.elf verify reset exit"

Linux, Windows or Mac

Compile:

gn gen out --export-compile-commands --args="
  dir_pw_third_party_imgui=\"$PW_PROJECT_ROOT/environment/packages/imgui\"
  dir_pw_third_party_glfw=\"$PW_PROJECT_ROOT/environment/packages/glfw\"
"
ninja -C out

Run:

out/host_debug/obj/applications/terminal_display/bin/terminal_demo

Raspberry Pi Pico Connected to an external SPI display

Working displays:

Compile:

gn gen out --export-compile-commands --args="
  PICO_SRC_DIR=\"$PW_PROJECT_ROOT/environment/packages/pico_sdk\"
"
ninja -C out

Flash:

  • Using a uf2 file:

    ./out/host_debug/obj/targets/rp2040/bin/elf2uf2 ./out/rp2040/obj/applications/terminal_display/bin/terminal_demo.elf ./out/rp2040/obj/applications/terminal_display/bin/terminal_demo.uf2
    

    Copy ./out/rp2040/obj/applications/terminal_display/bin/terminal_demo.uf2 to your Pi Pico.

  • Using a Pico Probe and openocd:

    This requires installing the Raspberry Pi foundation's OpenOCD fork for the Pico probe. More details including how to connect the two Pico boards is available at Raspberry Pi Pico and RP2040 - C/C++ Part 2: Debugging with VS Code

    Install RaspberryPi's OpenOCD Fork:

    git clone https://github.com/raspberrypi/openocd.git \
      --branch picoprobe \
      --depth=1 \
      --no-single-branch \
      openocd-picoprobe
    
    cd openocd-picoprobe
    
    ./bootstrap
    ./configure --enable-picoprobe --prefix=$HOME/apps/openocd --disable-werror
    make -j2
    make install
    

    Setup udev rules (Linux only):

    cat <<EOF > 49-picoprobe.rules
    SUBSYSTEMS=="usb", ATTRS{idVendor}=="2e8a", ATTRS{idProduct}=="0004", MODE:="0666"
    KERNEL=="ttyACM*", ATTRS{idVendor}=="2e8a", ATTRS{idProduct}=="0004", MODE:="0666"
    EOF
    sudo cp 49-picoprobe.rules /usr/lib/udev/rules.d/49-picoprobe.rules
    sudo udevadm control --reload-rules
    

    Flash the Pico:

    ~/apps/openocd/bin/openocd -f ~/apps/openocd/share/openocd/scripts/interface/picoprobe.cfg -f ~/apps/openocd/share/openocd/scripts/target/rp2040.cfg -c 'program out/rp2040/obj/applications/terminal_display/bin/terminal_demo.elf verify reset exit'
    

MIMXRT595-EVK Connected to an external MIPI display

Setup NXP SDK:

  1. Build a NXP SDK
  2. Download SDK
  3. Extract SDK's zip file to //environment/SDK_2_12_1_EVK-MIMXRT595

Compile:

gn gen out --export-compile-commands --args="
  pw_MIMXRT595_EVK_SDK=\"//environment/SDK_2_12_1_EVK-MIMXRT595\"
  pw_target_mimxrt595_evk_MANIFEST=\"//environment/SDK_2_12_1_EVK-MIMXRT595/EVK-MIMXRT595_manifest_v3_10.xml\"
  pw_third_party_mcuxpresso_SDK=\"//targets/mimxrt595_evk:mimxrt595_sdk\"
"

ninja -C out

Flash the MIMXRT595-EVK:

Follow the instructions to flash the MIMXRT595-EVK with the SEGGER J-Link firmware and using arm-none-eabi-gdb at https://pigweed.dev/targets/mimxrt595_evk/target_docs.html#running-and-debugging.

Teensy 4.1

https://www.pjrc.com/teensy/loader_cli.html

brew install teensy_loader_cli
OBJCOPY=/Applications/Arduino.app/Contents/Java/hardware/tools/avr/bin/avr-objcopy
INFILE=out/arduino_debug/obj/applications/terminal_display/bin/terminal_demo.elf
OUTFILE=foo.hex
$OBJCOPY -O ihex -R .eeprom -R .fuse -R .lock -R .signature $INFILE $OUTFILE
teensy_loader_cli --mcu=TEENSY41 -w -v $OUTFILE