Time to wait after reset transmit and receive buffer
Posted: Mon 27. Jul 2020, 12:46
Hello,
considering the PCAN-Basic API, the reset function clear the transmit and receive buffer of the specified channel:
Are all messages up to the driver level deleted or is it possible that some messages are not deleted in the driver anymore?
Is there a minimum time to wait after calling the reset function to give the API enough time to clear the internal buffer completely?
I have noted the following behavior: 100 messages are sent at 1 Mbit (as fast as possible in a loop, i.e. the frames have to be buffered by the PCAN, because writing to the queue is faster than frames can be put on the bus). Afterwards the reset function is called and then send one frame and read directly. In this case, however, there are some old messages from the previous call.
Thanks
Martin
considering the PCAN-Basic API, the reset function clear the transmit and receive buffer of the specified channel:
Code: Select all
# Resets the receive and transmit queues of the PCAN Channel
#
def Reset(
self,
Channel):
"""
Resets the receive and transmit queues of the PCAN Channel
Remarks:
A reset of the CAN controller is not performed
Parameters:
Channel : A TPCANHandle representing a PCAN Channel
Returns:
A TPCANStatus error code
"""
try:
res = self.__m_dllBasic.CAN_Reset(Channel)
return TPCANStatus(res)
except:
print ("Exception on PCANBasic.Reset")
raiseIs there a minimum time to wait after calling the reset function to give the API enough time to clear the internal buffer completely?
I have noted the following behavior: 100 messages are sent at 1 Mbit (as fast as possible in a loop, i.e. the frames have to be buffered by the PCAN, because writing to the queue is faster than frames can be put on the bus). Afterwards the reset function is called and then send one frame and read directly. In this case, however, there are some old messages from the previous call.
Thanks
Martin