Document that the sync mount option should be used

[JennyLynnFletcher]

Team ran code where power board ID instead of motor board ID. This caused what seems to be logging crash with a totally empty log file created.

The code which caused this is listed below where FRONT_WHEELS is the power board ID. Expect to raise key issue. Instead no logs created. Lack of logs persists even when known good code is run, USB reformat fixes this.

from sr.robot3 import *
import time
import math

R = Robot()

BACK_WHEELS = "SR0WAF"
FRONT_WHEELS = "sr0XT25"

def drive_wheel(power: float, fb: str, lr: str):
    board = None
    side = None

    if fb in ["front", "f"]:
        board = FRONT_WHEELS 
    elif fb in ["back", "b"]:
        board = BACK_WHEELS
    else:
        print("INVALID WHEEL SIDE '{}'".format(fb))
        return

    if lr in ["left", "l"]:
        side = 0
    elif lr in ["right", "r"]:
        side = 1
    else:
        print("INVALID WHEEL SIDE '{}'".format(lr))
        return

    try:
        R.motor_boards[board].motors[side].power = power
    except Exception as error:
        print("DRIVE WHEEL ERROR:", error)
 
def drive(power: float):
    drive_wheel(power, "front", "left")
    drive_wheel(power, "front", "right")
    drive_wheel(power, "back", "left")
    drive_wheel(power, "back", "right")

while True:
    drive(math.sin(time.time() / 2))
    time.sleep(0.1)

[trickeydan]

We have identified the cause of this bug as not having the sync mount option in the Udisks configuration.

Therefore this bug is not technically an issue with astoria. However, we should document this behaviour in the requirements.