​​​​Brand:

• AMX

Models:

• CE-COM2

Overview:

​​​​The below code is used to control a CE-COM2 device.  The code watches for the device to come online, configures the port, sends and receives strings, and reports faults detected on ports.

Download:

CE-COM2_Example.zip

Example Code:

from mojo import context

context.log.info('Sample Python program')

#Create objects for the controller (idevice) and touch panel (AMX-11241)
CE_COM2 = context.devices.get("tsCE_COM2")
dvTP = context.devices.get("AMX-11241")


#Create a variable to access just the serial port
serialPort1 = CE_COM2.serial[0]


#This creates a buffer for incoming serial strings, if a string is longer than 64 characters
#it will trigger multiple events, this allows building the string until a delimiter is reached
serialBuffer = ""


#As long as the idevice is online it will set the baud rate of the serial port
if(CE_COM2.isOnline()):
    context.log.info("tsCE_COM2 online, setting baud rate.")
    serialPort1.setCommParams("9600",8,1,"NONE","232")


#If the CE-COM2 comes online after the script is running, this function will set the baud rate of the
#serial port
def ceOnline(event):
    context.log.info("tsCE_COM2 online, setting baud rate.")
    serialPort1.setCommParams("9600",8,1,"NONE","232")

CE_COM2.online(ceOnline)


#This function processes incoming strings utilizing the serialBuffer variable declared above
#Once a carriage return is seen in the string it prints what has been received
def receiveString(event):
    global serialBuffer

    serialBuffer += event.arguments['data'].decode()
    
    if (serialBuffer.find("\r") >= 0):
        print(f"Full string: {serialBuffer}")
        serialBuffer = ""

serialPort1.receive.listen(receiveString)


#An example of sending an ASCII string from the serial port
def sendASCII(event):
    serialPort1.send("ASCII string\r".encode())
    
dvTP.port[1].button[1].watch(sendASCII)


#An example of sending a hexadecimal string from the serial port
def sendHEX(event):
    serialPort1.send("\x02 \x68 \x65 \x6c \x6c \x6f \x03 \x0d".encode())
    
dvTP.port[1].button[2].watch(sendHEX)


#An example of sending a mixed hex/ASCII string from the serial port
def sendMIX(event):
    serialPort1.send("\x02 Mixed string \x03 \r".encode())
    
dvTP.port[1].button[3].watch(sendMIX)


#This function is triggered by a fault detection in the serial port, it will print out the error 
def receiveFault(event):
    context.log.info(f"Serial port fault: {event.arguments['value']}")

serialPort1.fault.listen(receiveFault)

#Leave this as the last line in the Python script
#This keeps the script running with a no-op loop, 
#maintaining the Mojo environment and access to the globals() dictionary
#For additional information search for the following article: 
#    Using context.run in MUSE Python Code

context.run(globals())