ESP32 Forum

dpharris wrote:
To summarize:
* The ESP31 is a preliminary version (beta) for early adopters, and does not include CAN;
* The ESP32 will come out (2nd quarter 2016) and will contain a CAN controller +/- CAN-driver.

hi david,
please note

ESP32集WIFI&蓝牙于一体的芯片！将于8月份正式面世！

so we are all wait for the great official day

best wishes
cant wait too, hope this helps.
rudi

btw: this weekend i start CAN on esp31/esp32beta .
not sure how i go on, because official not support,
but have a try as a soft transceiver in first step for my test.

ESP_Greg wrote:Hey, guys, we are working on that.
Will release on next version SDK. Too many things on-going now.

hi ESP_Greg,

how you go on in next release get we an update in this or next month?
hope you guys are not in holiday
we have "shool" holidays next 2 weeks here. kids and teachers have freetime.
so i try to start this weekend a soft transceiver mode on GPIO and esp8266 with mcp2515.
I2C master and slave working well now too.
on monday we have holiday, perhabs i manage and can do it promised on this day the I2C Master/Slave video too.

hey, haste makes waste
best wishes
rudi

Fyi, no holiday here, the holiday system in China is slightly different from that in Europe. Most of the software/hardware team is working very hard to get the ESP32 design out of the door, so that may be why it seems there's not much going on.

To get back to the original discussion:I just poked our hardware guys. The details are like this: We do have one CAN interface in the ESP32 (but not in the ESP31). It does still needs an external PHY. Also, if I understand it correctly, the MAC layer has to be implemented at least partially in software, and at the moment we don't have that yet. My apologies for not answering this earlier.

Thanks for your help ... looking forward to the next board -- a real EXP32!

David

Is there any update on the CAN Interface and the API's for it?
The current documents dont have any information except to say that it supports CAN2.0, no information in the pinouts either.

Sorry, no. Also: The CAN bus is muxed over the GPIO matrix, so it's not in the pinout because it does not have a fixed set of pins.

ESP_Sprite wrote:Sorry, no. Also: The CAN bus is muxed over the GPIO matrix, so it's not in the pinout because it does not have a fixed set of pins.

Is the can controller mutually exclusive with one of the uarts or separate?

The documentation of that peripheral hasn't passed my desk yet, but I'm pretty sure the CAN-bus and the UARTs are entirely separate.