lonworks: MIP DPS lockup (MIP from echelon)
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Posted by lroy on April 11, 2005, 10:09 am
Please log in for more thread options I am looking for information on the MIP/DPS from echelon to fix the problem described below. In particular, a web page on the MIP: "MIP Link Layer Timing" by Darron Fick. We have built a driver for a power PC to interface to a MIP. After as little as 1h30, the neuron stops transmitting. The length of time it lasts is proportional to application/network buffers. The number of messages that does not get back completion events seems to be equivalent to the number of application/network buffers. Normally, one message every 50ms is sent to the MIP. However, for the test reproduce the problem faster, the messages are sent has fast as the driver/MIP can take it (8 to 10 ms). The MIP does not receive any messages. The neuron is only plugged with a lonworks protocol analyzer. There are two threads in the driver one that reads and one that writes, however reads and writes are mutually exclusive. After the MIP stops transmitting, the driver seems to be able to talk to the driver and nodeutil can access the chip (for this particular test). If you have had a similar problem, it would be appreciated if you could tell me what you have done to fix. If you have any suggestion on what should be looked into, it will also be appreciated. Thank you in advance lroy@oerlikon.ca Related subjects: MIP, DPS, MIP/DPS, echelon, lonworks, LON. | ||||||||||
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