# Wait for "+QIND: PB DONE" response
expect {
    "+QIND: PB DONE" {
        # Send AT command (automatically adds \r)
        send "AT"
    }
    timeout {
        print "Error: Timed out waiting for PB DONE"
        exit 1
    }
}

# Wait for OK response after sending AT
expect {
    "OK" {
        print "COMMAND EXECUTED"
    }
    timeout {
        print "Error: Timed out waiting for OK"
        exit 1
    }
}

# Exit successfully
exit 0
                                
                            

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