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problems recieving Data with tja1022

Question asked by Heiko Brons on Dec 11, 2017

Hi,

I'm currently trying to use the TJA1022 which is build in the DEVKIT-COMM to communicate with slaves via LIN Bus. The Tja1022 is configured as a master.

Transmitting works fine but recieving currently doesn't work for me. To recieve an answer from one of the slaves I send the Break-, Sync-, and IDbyte. After the ID I stop the Bus commnunication to let the slave fill in the missing Bytes.

Up to this point everything works as expected however no data is put on the RX Pin. Are there any preconditions that I need to fullfill in order to get data send from the tja1022 to the MCU?

thanks in advance

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