poeparse.py

import sys

DUMP_FILE="poe-init.moser"

packet_def = {
	0x00 : {
		"name" : "set port enable",
		"fields" : [
			("port", 1),
			("enable", 1),
		]
	},
	0x02 : {
		"name" : "set port map enable",
		"fields" : [
			("enable", 1),
		]
	},
	0x06 : {
		"name" : "set global port enable",
		"fields" : [
			("enable", 1),
		]
	},
	0x09 : { "name" : "system reset", "fields" : [] },
	0x0b : {
		"name" : "set device power management",
		"fields" : [
			("pre-alloc", 1),
			("powerup_mode", 1),
			("disconnect_order", 1),
			("gb_hysteresis", 1),
		]
	},
	0x11 : {
		"name" : "set classification enable",
		"fields" : [
			("port", 1),
			("classification", 1),
		]
	},
	0x13 : {
		"name" : "set disconnect type",
		"fields" : [
			("port", 1),
			("disconnect", 1),
		]
	},
	0x15 : {
		"name" : "set power limit type",
		"fields" : [
			("port", 1),
			("limit_type", 1),
		]
	},
	0x16 : {
		"name" : "set power power budget",
		"fields" : [
			("port", 1),
			("power_limit", 1),
		]
	},
	0x17 : {
		"name" : "set power management mode",
		"fields" : [
			("mode", 1),
		]
	},
	0x18 : {
		"name" : "set global power budget",
		"fields" : [
			("pse_ctrl", 1),
			("total_power", 2),
			("guard_band", 2),
		]
	},
	0x1a : {
		"name" : "set port priority",
		"fields" : [
			("port", 1),
			("priority", 1),
		]
	},
	0x1c : {
		"name" : "set port power-up mode",
		"fields" : [
			("port", 1),
			("mode", 1),
		]
	},
	0x1d : {
		"name" : "set port mapping",
		"fields" : [
			("port", 1),
			("mode", 1),
		]
	},
	0x20 : {
		"name" : "set global power budget",
		"fields" : [
			("mode", 1),
			("max_ports", 1),
			("port_map", 1),
			("id", 2),
			("version", 1),
			("mcu_type", 1),
			("system_status", 1),
			("version_ext", 1),
		]
	},
	0x20 : {
		"name" : "get system info",
		"fields" : [
			("mode", 1),
			("max_ports", 1),
			("port_map", 1),
			("id", 2),
			("version", 1),
			("mcu_type", 1),
			("system_status", 1),
			("version_ext", 1),
		]
	},
	0x23 : {
		"name" : "get power statistics",
		"fields" : [
			("consumed", 2),
			("budget", 2),
			("b3", 1),
			("high_power", 1),
			("gb_hysteresis", 1),
		]
	},
	0x2548 : {
		"name" : "get all port status",
		"fields" : [
			("port", 1),
			("status", 2),
		]
	}
}

def decode_packet(pkt):
	pkt_type = pkt[0]

	csum = sum(pkt[0:11]) & 0Xff
	if csum != pkt[11]:
		print(f'{pkt.hex(sep=" ")} Checksum error={hex(csum)} != {hex(pkt[11])}')
		return

	pdef = packet_def.get(pkt[0])
	if not pdef:
		print(f'**** Unexplained {pkt.hex(sep=" ")} ****')
		return

	offset = 2
	descr = ""
	for name, size in pdef["fields"]:
		value = 0
		for orf in range(offset, offset + size):
			value = value << 8 | pkt[orf]

		descr += f' {name}={hex(value)}'
		offset += size

	#print(f'  explained {pkt.hex(sep=" ")}')
	print (f'[{hex(pkt[0])}]{pdef["name"]}:{descr}')


def main():
	if len(sys.argv) > 1:
		DUMP_FILE = sys.argv[1]

	with open(DUMP_FILE, 'rb') as f:
		while (packet := f.read(12)):
			decode_packet(packet)

if __name__ == "__main__":
	main()