2003-06-20 02:53 AM
ST90T40 CAN communication problem at startup
2011-05-17 02:33 AM
We have a problem with the interface between the uC ST90T40 and the SJA1000 controller:
- when we switch-on the circuit the first time, the communication between the card and the other equipment through the CAN communications network is right. - When we switch-off and switch-on the circuit with a time difference below 2 seconds (aprox.), with some micro controllers the CAN communication is right and with other micro controllers the same function isn’t right. The SJA1000 is a CAN communication controller and the uC is the responsible for configuring the SJA1000. The SJA1000 is accessed as a memory from uC using P0DR as alternate function: Do you know if it's something already known? thanks a lot Fiorenz2011-05-17 02:33 AM
The problem description is not enougth detailled: did you analyze the Port0 bus signals and the SJA1000 signals during a failure compare with a good device ?
2011-05-17 02:33 AM
Sir,
Did you ever find a solution to this difficulty? Sounds like something we just encountered?