From 989919a73c5ebd46368991b6c3ff6959e32490b6 Mon Sep 17 00:00:00 2001
From: tao_z <tzj0429@163.com>
Date: Tue, 23 Aug 2022 22:06:32 +0800
Subject: [PATCH] 完善did读取显示
---
USBCAN.py | 28 ++++++++++++++++++----------
1 files changed, 18 insertions(+), 10 deletions(-)
diff --git a/USBCAN.py b/USBCAN.py
index 59fd8c6..e197752 100644
--- a/USBCAN.py
+++ b/USBCAN.py
@@ -304,6 +304,8 @@
self.device = device_type
self.device_index = device_index
self.channel = can_index
+ self.timestamp_start = None
+ self.laststamp = None
Timing0, Timing1 = TIMING_DICT[bitrate]
@@ -418,7 +420,7 @@
USBCAN_DLL.VCI_Transmit(self.device, self.device_index, self.channel,
byref(raw_message), 1)
- def Receive(self, len=10, timeout=None):
+ def Receive(self, len=1, timeout=None):
raw_message = (VCI_CAN_OBJ * len)()
timeout = -1 if timeout is None else c_int(timeout * 1000)
@@ -429,17 +431,23 @@
if rtn == 0xFFFFFFFF or rtn == 0:
return None, False
else:
+ if self.timestamp_start == None:
+ self.laststamp = raw_message[0].TimeStamp
+ self.timestamp_start = self.laststamp
for i in range(rtn):
msg.append(
- Message(
- timestamp=raw_message[i].TimeStamp
- if raw_message[i].TimeFlag else 0.0,
- arbitration_id=raw_message[i].ID,
- is_remote_frame=raw_message[i].RemoteFlag,
- channel=0,
- extended_id=raw_message[i].ExternFlag,
- data=raw_message[i].Data,
- ))
+ Message(timestamp=(
+ (raw_message[i].TimeStamp - self.timestamp_start) /
+ 1000000) if raw_message[i].TimeFlag else 0.0,
+ arbitration_id=raw_message[i].ID,
+ is_remote_frame=raw_message[i].RemoteFlag,
+ channel=0,
+ extended_id=raw_message[i].ExternFlag,
+ data=raw_message[i].Data,
+ is_error_frame=False))
+ # timestamp = raw_message[i].TimeStamp if raw_message[
+ # i].TimeFlag else 0.0,
+ # print(timestamp)
return (msg, rtn)
def ListeningMsg(self, connectRet, needClose, msgQueue: Queue,
--
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