PX4-Autopilot: MRO Control Zero F7 Support - Missing Functionality Items

The MRO Control Zero F7 has a few things not working under 1.11.3 Release and Master (as of writing). After talking with @dagar, testing each port for functionality was deemed the best course to bring this board up to full support.

See the below - will do necessary flight tests as well moving forward on this.

This is in order from not work to working ports:

Port

• RSSI

  • Analog
    • Not Working
    • Working Now via https://github.com/PX4/PX4-Autopilot/pull/16593 Tested with Dragonlink and X8R Receiver
  • Digital
    • Not Working - Tested with Dragonlink

• Usart CH6 (Listed in notes as Flex Port and /dev/ttyS3)

  • Telemetry - Not Working (tested with Holybro SIK Radio)
  • Hardware flow control - Not Working (Tested Holybro SIK Radio)
    • Tried to Enable from QGC as every option
    • Also tried mavlink start -d /dev/ttyS3 from QGC

• Power Monitor

  • Not Working as standard. Working after changes to code below Working Now and Merged to Master via https://github.com/PX4/PX4-Autopilot/pull/16590
    • This Commit AND a change to below needs to be made. Needs to be: #define BOARD_ADC_BRICK_VALID (px4_arch_gpioread(GPIO_nVDD_BRICK1_VALID)) here: https://github.com/PX4/PX4-Autopilot/blob/cee401666598b54e268d65a79a51fa7841ceba49/boards/mro/ctrl-zero-f7/src/board_config.h#L178

• CAN

  • Maybe Working? - Tested with Zubax Myxa - Shell Snapshot attached at bottom.

• Uart CH8 (Listed in notes as Frsky Serial Portt and /dev/ttyS5)

  • Could not find - Probably pins 11 & 13 on front connector Pinout

• Frsky Serial

  • Not tested (but will test if pointed to some instructions and expected output)

• Safety Switch

  • Working - Tested with Lighted external Safety switch - No light due to no safety switch led routing pin (maybe possible to route one from front pin 9 (Skepktrum VDD 3v3?)

• RC IN

  • PPM
    • Working - Tested with Dragonlink Receiver
  • SBUS
    • Working - Tested with X8R Receiver

• Uart Ch4 (Listed in notes as GPS and /dev/ttyS2)

  • GPS
    • Working - Tested with M9N and M8N.

• I2C(1)

  • Working - Tested with SF11/c, MS4525, HMC5883

• Usart CH3 (Listed in notes as Telem 2 and /dev/ttyS1)

  • Telemetry - Working (tested with Holybro SIK Radio)
  • Hardware flow control - Working (Tested Holybro SIK Radio)
    • Enabled from QGC as Telem 2

• Usart CH2 (Listed in notes as Telem 2 and /dev/ttyS0)

  • Telemetry - Working (tested with Holybro SIK Radio)
  • Hardware flow control - Working (Tested Holybro SIK Radio)
    • Enabled from QGC as Telem 1

• USB (OTG)

  • Working

• FMU Outputs Note:Tested with stick input and in Stabilized mode to ensure expected counter movement occurred

  • 1 - Working - Servo Attached
  • 2 - Working - Servo Attached
  • 3 - Working - Servo Attached
  • 4 - Working - Servo Attached
  • 5 - Working - Used a servo as the output and tested Motor slider in QGC (Throttle Channel)
  • 6 - Working - Servo Attached
  • 7 - Working - Servo Attached
  • 8 - Working - Servo Attached

• Uart Ch7 (Listed in notes as Console and /dev/ttyS4)

  • Console
    • Working - Tested with FTDI cable and connected via Terminal/Scree on MacOS.

• The listing in QGC for which mavlink instance to start which port is not clear or doesn’t match.

Note: The board gets quite hot (implications for sensors?)

• Possible to use a GPIO on here somewhere for camera triggering?