Re: Non Powered Devices

I think we all agree that the ESP32 is a nice low-cost controller, but 
let us go back to the first question about the licensing of the CAN 
interface. We see that Chinese chip builders like Allwinner (A20) and 
Espressif (ESP32) integrate CAN in their chips, however don't promote 
it. It is not mentioned in their basic features. Companies like Olimex 
detect such hidden features and make "open source" hardware for it, so 
it can be used. The world knows about the hidden feature, but does not 
know if the CAN interface is really licensed by the chip manufacturer. 
What about the smart device I sell to the automotiv industry in 
quantities? I'm still expecting that the chip manufacturer paid the 
licensing costs to Bosch by rule, but what if they did not?

Kees


Op 6-8-2018 om 04:25 schreef Peter Lauer:
> Bye the way the ESP32 has a wired Ethernet interface too...
> We are using it for an in vehicle IO controller that gets the command via CAN but can interface to a smart phone for information.
>
> Peter
>
> -----Original Message-----
> From: [email protected] [mailto:[email protected]] On Behalf Of John Dammeyer
> Sent: Sunday, August 05, 2018 3:38 PM
> To: 'CANLIST'
> Subject: RE: [CANLIST] Non Powered Devices
>
> The idea of having a CAN driver on one of these little Wifi based units is really quite exciting although I must admit, I just switched my 3D printer Raspberry Pi over from WiFi to wired.  What happened over the space of 2 months is the location at one end of the house where the printer was located suddenly had 8 extra WiFi devices visible (using inSSIDer3).  Four of those devices had a higher signal strength than my own network and the Octoprint essentially became useless.
>
> Running Ethernet cable not only solved the problem but the video camera watching the 3D printing updated much faster.  As did downloading print files.
>
> I realize we can add repeaters etc. but the reality is a wired system like Ethernet or CAN is still way better than WiFi.  So that then begs the question is really does it matter if the ESP32 has CAN?  Still the modules are so cheap compared to a Raspberry Pi that doesn't have CAN.
>
> John Dammeyer
>
>
>> -----Original Message-----
>> From: [email protected] [mailto:[email protected]] On
>> Behalf Of Heinz-Jürgen Oertel
>> Sent: August-05-18 1:13 PM
>> To: CANLIST
>> Cc: John Dammeyer; Kees Zagers
>> Subject: Re: [CANLIST] Non Powered Devices
>>
>> Am Sonntag, 5. August 2018, 19:35:47 CEST schrieb Kees Zagers:
>>> Sure it has a CAN-controller and here is a product that uses it,
>>> complete with CAN transceiver and connector:
>>>
>>> https://www.olimex.com/Products/IoT/ESP32-EVB/open-source-
>> hardware
>> OK Kees,
>> the evaluation board has a CAN transceiver which is connected to GPIO5 and
>> GPIO35. But I can not get any information about the CAN module insight the
>> ESP32-WROOM32, Please help.
>>
>> Am Sonntag, 5. August 2018, 18:23:46 CEST schrieb John Dammeyer:
>>> Don't know if this helps.
>>>
>> https://github.com/eerimoq/simba/tree/46778af636a4fe58773753b5ed9da8
>> 3916cfaa
>>> 06
>>>
>>> It appears to have CAN module.
>> Checking the source code leads to two modules:
>> src/drivers/can.c
>> src/drivers/mcp2515.c
>>
>>
>>
>>
>>
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