LangLi497010479/vu12_fw.ch552

저가의 ch55x chip을 사용한 LVDS2HDMI LCD Monitor control(VU12, 1920x720)

vu12_fw

저가의 ch55x chip을 사용한 LVDS2HDMI LCD Monitor control(VU12, 1920x720)

ch55x 참조 사이트

• https://github.com/DeqingSun/ch55xduino
• https://cdn.jsdelivr.net/gh/DeqingSun/ch55xduino@playground
• https://github.com/topics/ch552
• vnproch55x https://github.com/LoveMHz/vnproch55x/tree/master

arduino-cli install 참조사이트(X86)

• https://m.blog.naver.com/roboholic84/221815428642

Video Timings Calculator

• https://tomverbeure.github.io/video_timings_calculator

EDID Read & Check

• https://wiki.odroid.com/accessory/display/vu_series/vu8/update_edid

Custom EDID Test

• https://wiki.odroid.com/common/hdmi_howto/custombuilt?s[]=custom&s[]=hdmi

Install Package

• arduino-cli install

  root@odroid:~# mkdir cli
  root@odroid:~/cli# cd cli
  root@odroid:~/cli# curl -fsSL https://raw.githubusercontent.com/arduino/arduino-cli/master/install.sh | sh
  root@odroid:~/cli# cp ./bin/arduino-cli /bin/

• config파일 생성 및 보드 설치

  root@odroid:~/cli# arduino-cli config init
  root@odroid:~/cli# vi ~/.arduino15/arduino-cli.yaml

• board package urls 추가

  additional_urls:
    - https://raw.githubusercontent.com/DeqingSun/ch55xduino/ch55xduino/package_ch55xduino_mcs51_index.json

• board package index file download (ARM Board에 설치시에만 필요함. add url을 참조하여 진행하지 못하는 현상이 발생)

  root@odroid:~/cli# cd ~/.arduino15
  root@odroid:~/.arduino15# wget https://raw.githubusercontent.com/DeqingSun/ch55xduino/ch55xduino/package_ch55xduino_mcs51_index.json

• board package & core install

  root@odroid:~/.arduino15# arduino-cli core install CH55xDuino:mcs51

Compile & Download

  # clone vu12_fw repo
  root@odroid:~# git clone https://github.com/charles-park/vu12_fw
  # compile only
  root@odroid:~# arduino-cli compile -b CH55xDuino:mcs51:ch552 vu12_fw
  # compile & download
  root@odroid:~# arduino-cli compile -b CH55xDuino:mcs51:ch552 vu12_fw -u -p /dev/ttyACM0
  # download only
  root@odroid:~# arduino-cli upload -b CH55xDuino:mcs51:ch552 -i vu12_fw.hex -p /dev/ttyACM0

ch55x 전용 tool을 사용한 download (script/download.sh 참조)

• bootloader rule 복사

  root@odroid:~/cli# wget https://cdn.jsdelivr.net/gh/DeqingSun/ch55xduino@playground/ch55xduino/tools/linux_arm/99-ch55xbl.rules
  root@odroid:~/cli# cp 99-ch55xbl.rules /etc/udev/rules.d/

• 전용 tool download

  root@odroid:~/cli# wget https://cdn.jsdelivr.net/gh/DeqingSun/ch55xduino@playground/ch55xduino/tools/linux_arm/vnproch55x
  root@odroid:~/cli# chmod 777 ./vnproch55x
  root@odroid:~/cli# cp vnproch55x /bin/

• Download (Nomal state : /dev/ttyACM0 node가 있고 1209:c550 device가 있는 경우)

  # UART(/dev/ttyACM0)의 baud를 변경하여 bootloader모드로 진입 후 다운로드 함.
  usbreset 1209:c550
  stty -F /dev/ttyACM0 1200
  vnproch55x -r 2 -t ch552 <fw_file.hex>
  stty -F /dev.ttyACM0 9600

• Donwload (Boot state : /dev/ttyACM0 node가 없고 4348:55e0 device가 있는 경우)

  usbreset 43489:55e0
  vnproch55x -r 2 -t ch552 <fw_file.hex>HOST -> UPS (4 Bytes)									

주의 : Firmware Download후 반드시 "stty -F /dev/ttyACM0 9600" 실행. 실행 없는 경우 UART접근시 reset되어짐.

Hex file 생성위치

  /tmp/arduino/sketches/***/vu12_fw.hex