ESP32 + MCP2515 use CANHacker on CAN Bus system 

Welcome

Good information!! I will try it!

What are you talking about , how can you not use a tranceiver ?

Can you elaborate?

@@natan66 Search for TWAI in the datasheet and you will understand.

@@natan66 check TWAI peripheral in the datasheet of ESP32.

if you want use 16MHz MCP2515 maybe you can try change below code canHacker->setClock(MCP_8MHZ); to canHacker->setClock(MCP_16MHZ);

I don't have this module so you need to try by yourself!

@@winson-DIY Yes, I got this working with an Arduino and posted a video you can watch if your interested. It was the second video in my DIY EV series made a couple of years ago.

goods for you

I tried both codes from youtube and from the blog, both have errors, which code did you use?

@@mateicornel9232 you can visit my blog :www-winson.blogspot.com/2023/05/esp32-mcp2515-use-canhacker-on-can-bus.html that has detail description!

@@mateicornel9232 I update the full code on my blog. you can try it!!

@@winson-DIY I managed to load the program on the esp32-s3 without errors. I made these connections: CS10,SCK12,MISO13,MISO12, INT_PIN18 and RX:18, TX17. It doesn't read any can-bus :(, and can hacker doesn't connect on the selected port :(. LEDTask at core: 0 Guru Meditation Error: Core 0 panic'ed (Unhandled debug exception). Debug exception reason: Stack canary watchpoint triggered (LEDTask) Core 0 register dump: PC : 0x4037d85b PS : 0x00060e36 A0 : 0x8037ffb8 A1 : 0x3fced460 A2 : 0x3fc97528 A3 : 0xb33fffff A4 : 0x0000abab A5 : 0x00060e23 A6 : 0x00060e23 A7 : 0x0000cdcd A8 : 0x0000cdcd A9 : 0xffffffff A10 : 0x00000054 A11 : 0xfffc1fff A12 : 0x00060620 A13 : 0x00000000 A14 : 0x02c97528 A15 : 0x00ffffff SAR : 0x00000010 EXCCAUSE: 0x00000001 EXCVADDR: 0x00000000 LBEG : 0x400556d5 LEND : 0x400556e5 LCOUNT : 0xffffffff Backtrace: 0x4037d858:0x3fced460 0x4037ffb5:0x3fced4a0 0x4037ffe2:0x3fced4c0 0x40380118:0x3fced4e0 0x40377e77:0x3fced500 0x40377e89:0x3fced530 0x40377eb2:0x3fced550 0x403804b9:0x3fced570 0x4037b481:0x3fced590 0x4037b724:0x3fced5b0 0x420046c7:0x3fced5d0 0x4200456b:0x3fced630 0x4200432a:0x3fced6c0 0x4200198d:0x3fced6e0 Thx for the response. Good day man! And for esp32 devkit v4 , I used your connections, with this result :( rst:0x1 (POWERON_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT) configsip: 0, SPIWP:0xee clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00 mode:DIO, clock div:1 load:0x3fff0030,len:1344 load:0x40078000,len:13964 load:0x40080400,len:3600 entry 0x400805f0 LEDTask at core: 0 CANTask at core: 1

Nice

lingshunlab.com/book/arduino/arduino-use-mcp2515-canbus reference this link

One way is to do two ESP32+MCP2515 transfer data to each other, the other way is ESP32+MCP2515 and Mega2560+MCP2515(it's what I'm using now)

To make sure the FW is work fine at the same CAN bus baud rate

Please reference www-winson.blogspot.com/2023/05/esp32-mcp2515-use-canhacker-on-can-bus.html and www-winson.blogspot.com/2023/07/esp32-mcp2515-use-canhacker-on-can-bus.html that is work fine !! good luck !!

you can down load the canHacker software test your hardware

Hi, I choice MCP2515 module is want to use CANHacker software.

do you have an example how ESP32 works with CAN? because there is nothing on inet

Hi, you can refer to this link www-winson.blogspot.com/2023/05/esp32-mcp2515-use-canhacker-on-can-bus.html

@@winson-DIY Thanks for sharing I have now used the same code from your blog after uploading the program to ESP32 and I tried to connect with canhacker UI V2.00.01 now it throwing one error "CAN interface not responding!" any solution for this error? tryied Windows 7 and 10 same error

@@heugor-india hi! can you try this link www-winson.blogspot.com/2023/07/esp32-mcp2515-use-canhacker-on-can-bus.html for debug

Hi, You can download this github.com/junhuanchen/Esp32-SoftwareSerial/tree/master library.

It is recommended that you use ESP32 dual core for better results.

Hi, I've never seen this APP for Android.

Hi, ESP-WROOM is fine. Have you read this article? ESP32 + MCP2515 use CanHacker on CAN Bus system --- Verify and Debug(www-winson.blogspot.com/2023/07/esp32-mcp2515-use-canhacker-on-can-bus.html) Try it !!

@@winson-DIY You Believe that i didnt read the article and the Video 50 times?

@@winson-DIY i just want a ESP32+MCP2515 with no other device involved no jumper on MCP2515 either

@@gc9n That's right, that's what I did.

@@winson-DIY ok it's working, just mention that the pin5 is not D5 , it's GPIO05

Can you do it again by referring to two related articles on my blog?

​@@winson-DIY I used same wiring diagram as u ( I mean same Pins's) ,also used code from ur blog there was lite difrent in line #defnie lenght_ofSomething.. the code are used MCP2515 8mhz same like my , i cant find bit rate so i set 500

@@TheBestSib You can use the blog code that is work.

im using it from start @@winson-DIY

I found the solution but... it connects only in STAMP TIME ONLY(when iam using stamp time it gives frame and i need to connect it againt to program ) , why i cent get real time data ? HS doesnt work and listen mode doesnt give any frames , am i doing sth wrong @@winson-DIY

This project can be applied to my work for cam bus application.

Read and send CAN messages I guess, likely on a car's network, what you do with it afterward is up to you, the sky is the limit. Personally I'll use it as a starting point to build something for a speeduino project (I want to control the original analog dashboard without having to double the sensors), I am fairly new to coding and the library I first tried to use had the pinout locked for "standard" arduino hats and I couldn't (wouldn't take the time to) figure out how to adapt them for my use case.

@@Homme_Pur Generally, CAN bus is used in cars to read the specific PID data you want to capture. It is recommended that you buy a PACN on the market first to get familiar with the CAN BUS architecture.

@@winson-DIY you didn't show how to receive CAN messages on ESP32. like ESP32 CAn Hacker. This is way too important and intereting

Hi, @alannobakht8503 I don't know what special library you are talking about, but there are a few key points: 1. #include 2.Check your SPI wiring is correct Arduino UNO Rev3 10 SS 13 SCK 11 MOSI 12 MISO First verify that your hardware can operate then to try your code !!!!

Can you find any sample code for your serial MCP2515 module that maybe can help!!

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