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interfaces:usb2can [2022/12/07 11:47]
darron [Termination] 		interfaces:usb2can [2022/12/19 00:32] (current)
darron [Upgrade]
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 <wrap right> <wrap right>
 {{:interfaces:usb2can.jpg?100}} {{:interfaces:usb2can.jpg?100}}
 +\\ \\
 +{{:interfaces:candev.jpg?100}}
 </wrap> </wrap>
  
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   CAN Device Drivers ->   CAN Device Drivers ->
    CAN USB interfaces ->    CAN USB interfaces ->
-     < > 8 devices USB2CAN interface+     <M> 8 devices USB2CAN interface
 </code> </code>
  
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 ===Termination=== ===Termination===
  
-There is no termination resistor in the USB2CAN and one can +There is no termination resistor in the USB2CAN and 120 ohms can 
-be placed within a plug housing.+be placed within the female plug housing between CANH and CANL.  
 + 
 +=== Test === 
 + 
 +<code> 
 +apt install can-utils 
 +</code> 
 + 
 +Host 1 
 + 
 +<code> 
 +candump can0 
 +</code> 
 + 
 +Host 2 
 + 
 +<code> 
 +cansend can0 123#DEADBEEF 
 +cangen can0 
 +</code> 
 + 
 +=== Pinout === 
 + 
 +DB9 male socket 
 + 
 +<code> 
 +1 2 3 4 5 
 + 6 7 8 9 
 + 
 +STANDARD 
 +2 CAN L 
 +3 GND 
 +6 GND 
 +7 CAN H 
 +</code> 
 + 
 +=== Upgrade === 
 + 
 +Install dfu-util from source. 
 + 
 +==dfu-util== 
 + 
 +<code> 
 +dfu-util -V 
 +dfu-util 0.11-dev 
 +</code> 
 + 
 +==Flash== 
 + 
 +Hold down button with a paper clip, or more easily prise 
 +open case and press the button with a thumb  and insert 
 +device in usb port. 
 + 
 +When upgrading omit the device ID because the firmware is 
 +for product id 0. 
 + 
 +<code> 
 +sudo dfu-util -D usb2can_1_7.dfu 
 +</code> 
 + 
 +==dmesg== 
 + 
 +<code> 
 +new full-speed USB device number 24 using dwc_otg 
 +New USB device found, idVendor=0483, idProduct=1234, bcdDevice= 1.00 
 +New USB device strings: Mfr=1, Product=2, SerialNumber=3 
 +Product: USB2CAN converter 
 +Manufacturer: edevices 
 +SerialNumber: ED000200 
 +usb_8dev can0: firmware: 1.7, hardware: 1.0 
 +</code>
  
 === Resources ==== === Resources ====
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 [[https://www.8devices.com/media/products/usb2can/downloads/usb2can_schematics.pdf|Schematic]] [[https://www.8devices.com/media/products/usb2can/downloads/usb2can_schematics.pdf|Schematic]]
 +
 +/*
 +[[https://web.archive.org/web/20160825184358/http://www.netduino.com/downloads/dfusedemo_3.0.3.zip|Windows DFU]]
 +*/
 +
 +[[https://www.8devices.com/media/products/usb2can/downloads/usb2can_1_7.zip|Last firmware]]