Can two FRDM-K64F boards be connected back-to-back using CAN?
If so, what kind of wires do I need to plug to the FRDM board headers?
Do I need to have CAN transceivers on each board? If so, is there any CAN transceiver shiled/add-on board
that I can use for the FRDM boards?
Thanks,
German
Hi German,
No, you can't connect two FRDM-K64F CAN pin together directly, you must need to add the external CAN transceivers.
The FRDM-K64 board didn't add the external CAN transceivers.
But don't worry, you use these board's CAN transceivers.
1.TRK-KEA series.
Take an example, the TRK-KEA128
https://www.nxp.com/downloads/en/schematics/TRK-KEA128_SCH.pdf
2. FRDM-KE06
FRDM-KE06Z|Freedom Development Platform|Kinetis MCU|NXP
3. TWR-SER
Serial (USB, Ethernet, CAN, RS232/485) Tower System Module|NXP
Wish it helps you!
If you still have question about it, please kindly let me know!
Have a great day,
Kerry
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Hi Kerry,
Thanks for your answer. If I understand you correctly, I could use the FRDM-KE06 board as an add-on/shield board for the FRDM-K64F. Is that right? If so, I could plug the two boards together using their arduino headers?
If this works, the arrangement I'm thinking is to have two FRDM64F boards, each one with a FRDM-KE06 as a shield. Now the question is how do I connect the two CAN nodes (that is, what kind of cable do I need to use to connect the
two FRDM-KE06 boards back to back?)
Thanks again,
German
Hi German,
If you don't have other independent CAN transceivers,and you also have two FRDM-KE06, of course you can use it.
Each FRDM-K64 need to connect one CAN transceivers.
About the connections, you can check the FRDM-KE06 board schematic.
You can remove R72, R74,then use the wire solder in R72 CAN_TX side, and another wire solder in CAN_RX R74 side.
Connect it to your FRDM-K64 CAN TX and RX pin, then connect two FRDM-KE06 board's CAN_H and CAN_L together.
Please note, you need to power on the FRDM-KE06 board, because CAN transceivers need the power.
Wish it helps you!
Have a great day,
Kerry
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Note: If this post answers your question, please click the Correct Answer button. Thank you!
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