PAL_Script.py

How to Read Data

The example below checks whether data has been received from MONOSTICK and, if so, passes it to the Main() function.

from apppal import AppPAL

...

def mainloop(PAL):
	# Check if the user-defined Main function can be imported.
	try:
		from Main_user import Main
	except:
		mainflag = False
	else:
		mainflag = True

	# Check whether data is available
	if PAL.ReadSensorData():
		if mainflag:
			# If Main was imported, pass the PAL object to Main()
			Main(PAL)
		else:
			# If Main was not imported, display the data on the console.
			PAL.ShowSensorData()

...

if __name__ == '__main__':
...

	try:
		PAL = AppPAL(port=options.target, baud=options.baud, tout=0.05, sformat=options.format, autolog=bEnableLog, err=bEnableErrMsg, stdinput=options.stdinp, Logfilename=options.file)
	except:
		print("Cannot open \"AppPAL\" class...")
		exit(1)

	while True:
		try:
			mainloop(PAL)
		except KeyboardInterrupt:
			break

	del PAL

First, create an AppPAL object. Since serial port settings are configured at instantiation, pass them as arguments.

PPAL = AppPAL(port=options.target, baud=options.baud, tout=0.05, sformat=options.format, autolog=bEnableLog, err=bEnableErrMsg, stdinput=options.stdinp, Logfilename=options.file)

Next, in the mainloop(), call ReadSensorData() to check whether serial data has arrived. If it returns True, pass the interpreted result to Main().

def mainloop(PAL):
	# Check if the user-defined Main function can be imported.
	try:
		from Main_user import Main
	except:
		mainflag = False
	else:
		mainflag = True

	# Check whether data is available
	if PAL.ReadSensorData():
		if mainflag:
			# If Main was imported, pass the PAL object to Main()
			Main(PAL)
		else:
			# If Main was not imported, display the data on the console.
			PAL.ShowSensorData()

For details on the dictionary structure received, refer to this section.