Re: About the CAN controller.
Posted: Sat Dec 15, 2018 8:21 am
Another update to my issues with sending frames (Tx) from my ESP32.
I came along exchanging the Transceiver SN65HVD230 (CJMCU-230 - Devboard Ali-ordered) with a some SN65HVD232 chips.
This solved the issue for me~! I have stable CAN Rx/Tx now on my very same test setup (it really slept there for the few month). It might be the whole batch(?) of my CJMCU-230 / SN65HVD230 were not matching my network setup (don't know if there are setups they work with, maybe among each. My test were done with a 2nd CAN node, arudino based MCP2515 (5V) Transceiver.)
If I make it to owning my first oscilloscope, then I can also cross-check the transceiver voltage level on bus side again (which in the first CJMCU-230 batch order seemed too low to be recognized by other nodes correctly).
I came along exchanging the Transceiver SN65HVD230 (CJMCU-230 - Devboard Ali-ordered) with a some SN65HVD232 chips.
This solved the issue for me~! I have stable CAN Rx/Tx now on my very same test setup (it really slept there for the few month). It might be the whole batch(?) of my CJMCU-230 / SN65HVD230 were not matching my network setup (don't know if there are setups they work with, maybe among each. My test were done with a 2nd CAN node, arudino based MCP2515 (5V) Transceiver.)
If I make it to owning my first oscilloscope, then I can also cross-check the transceiver voltage level on bus side again (which in the first CJMCU-230 batch order seemed too low to be recognized by other nodes correctly).