From 9f05d0ad714725a8a7ac5ce017f5a58a4b2ea102 Mon Sep 17 00:00:00 2001
From: Martin Teichmann <martin.teichmann@xfel.eu>
Date: Fri, 11 Dec 2020 12:22:29 +0000
Subject: [PATCH] make MAXSIZE a named constant
---
ethercat.py | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/ethercat.py b/ethercat.py
index a0b474f..12a7cd9 100644
--- a/ethercat.py
+++ b/ethercat.py
@@ -2,6 +2,8 @@ from asyncio import ensure_future, Event, Future, gather, get_event_loop, Protoc
from socket import socket, AF_PACKET, SOCK_DGRAM
from struct import pack, unpack, calcsize
+MAXSIZE = 1000 # maximum size we use for an EtherCAT packet
+
class AsyncBase:
async def __new__(cls, *args, **kwargs):
@@ -23,7 +25,7 @@ class EtherCat(Protocol, AsyncBase):
size = 2
while True:
*dgram, data, future = await self.send_queue.get()
- done = size > 1000 or self.send_queue.empty()
+ done = size > MAXSIZE or self.send_queue.empty()
ret.append(pack("<BBhHHH", *dgram,
len(data) | ((not done) << 15), 0))
ret.append(data)
--
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