QDP faker

QDP-faker.py

import time
import socket
import requests
import xml.etree.ElementTree as ET

# Tested with Qsys Core Nano version 9.9.0
# Packets captured from TSC-80-G2 using tcpdump
# This looping code allows the Core to discover a touchpanel on a network without multicast

CORE_IP = 'xxx.xxx.xxx.xxx'
periph_name = 'tsc-paradox'
periph_ip = 'yyy.yyy.yyy.yyy'

# read the design code name
response = requests.get(f'http://{CORE_IP}/status.xml')
xmldata = response.text
root = ET.fromstring(xmldata)
code_name = root.find('./design/code_name').text

payload = f"""<QDP>
<device>
    <type>ioframe</type>
    <name>{periph_name}</name>
    <part_number>TSC-80-G2</part_number>
    <platform>tsc_g2</platform>
    <lan_a_ip>{periph_ip}</lan_a_ip>
    <ref>device.ioframe.{periph_name}</ref>
    <periph_cfg_url>/#network</periph_cfg_url>
</device>
<control>
    <role>{periph_name}</role>
    <design_code>{code_name}</design_code>
    <primary>1</primary>
    <redundant>0</redundant>
    <device_ref>device.ioframe.{periph_name}</device_ref>
    <ref>control.{code_name}.{periph_name}.primary</ref>
</control>
</QDP>"""

print(payload)

while True:
    with socket.socket(socket.AF_INET, socket.SOCK_DGRAM, socket.IPPROTO_UDP) as sock:
        # After two network hops the packet will not be re-sent/broadcast
        # see https://www.tldp.org/HOWTO/Multicast-HOWTO-6.html
        # sock.setsockopt(socket.IPPROTO_IP, socket.IP_MULTICAST_TTL, 2)
        sock.sendto(payload.encode(), ('224.0.23.175', 2467))
    
    time.sleep(2)