[RESOLVED] LPC1833 : detect only one wire in CAN low speed

[lpcware]

Content originally posted in LPCWare by ArnaudE on Tue May 12 07:01:43 MST 2015
Hello,

I just read the CAN 2.0 Low Speed is also called "CAN Low Speed Fault tolerant". It can work with only one wire !

I wanted to know if I can detect with the LPC1833 when I'm receiving/transmitting on CAN bus with only one wire? In CAN register, there is no flag status to indicate this king of error.

I just want someone to confirm what i'm saying. That I can't detect the one wire transmission.

Regards

[lpcware]

Content originally posted in LPCWare by ArnaudE on Wed May 13 04:19:16 MST 2015
Okay.

Thanks for your time.

Regards,

Arnaud

[lpcware]

Content originally posted in LPCWare by R2D2 on Wed May 13 03:24:17 MST 2015

---

Quote: ArnaudE
I'm using CAN at 62.5kHz. When I disconnect one wire, i'm still receiving good frames...

---

That's pure coincidence  :)

[lpcware]

Content originally posted in LPCWare by ArnaudE on Wed May 13 02:35:48 MST 2015
Thanks for you answer.

I'm using this transceiver TI SN65HVD231 and it is only compatible with ISO 11898-2.

I'm using CAN at 62.5kHz. When I disconnect one wire, i'm still receiving good frames, and the LPC1833 see no error. But may it will didn't work with another component of the same reference.

[lpcware]

Content originally posted in LPCWare by R2D2 on Tue May 12 08:00:26 MST 2015

---

Quote: ArnaudE
I just read the CAN 2.0 Low Speed is also called "CAN Low Speed Fault tolerant". It can work with only one wire !

---

Yes, it can  :D

---

Quote: ArnaudE
I wanted to know if I can detect with the LPC1833 when I'm receiving/transmitting on CAN bus with only one wire?

---

Are you aware that you need a FT-CAN transceiver to use ISO 11898-3  :O

http://www.nxp.com/documents/application_note/AH0801.pdf