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I'm working on KIT9Z1J638EVM Evaluation Board. It is mentionned in the kit user guide that LIN bus can be used as SCI (UART). I need to connect the evalboard to PC via serial cable and establish half duplex communication. Is it possible? if yes, any help of how to do that? I tried to connect the LIN bus configured as SCI to the RXD pin of RS232 cable but I can't have a correct communication.
Hello Souha,
The connection is done through the SCI module of the MM9Z1_638 and the OSBDM port that will add a virtual COM port on the PC when connected. The LIN is not involved there.
This is explained in the KIT9Z1J638EVM User‘s Guide within the following note:
GPIO pins might also be connected to OSBDM to set Serial to the USB port. This is done by connecting:
TxD from SCI to one pin out of PTB[3…1], then the selected PTB to JP4-2.
RxD from SCI to one pin out of PTB[4…1], then the selected PTB to JP4-1.
Insure that the two selected PTB pins have no other setting (voltage sensing external divider, external temperature sensing setup), which might conflict with the 5.0 V digital IO setup.
So there you have to connect wires from selected PTBs to the right position on JP4.
Please refer to the KIT9Z1J638EVM User‘s Guide.
I hope it helps.
Regards,
Tomas