[onerng talk] Attaching OneRNG to programmer

Paul Campbell paul at taniwha.com
Wed Jun 21 00:34:00 BST 2017


On Wednesday, 21 June 2017 11:20:57 AM NZST bsr wrote:
> With ccload running, programmer connected to usb, and my onerng connected to
> the programmer via a tag connect cable (but not plugged in computer usb) I
> get a message 'Can't open port: /dev/ttyACM0' in the ccload status area
> when I click the 'Connect' button in the serial group box.  I thought the
> onerng can't be connected to computer usb if powered by the
> programmer.  I'm a little confused by some of the documentation at

ccload is trying to open the serial port that the programmer 

(you should not have the onerng you are trying to program plugged into a USB 
port while it's being programmed)

> This is referring to the programmer board correct?

yes - you need to know which serial port it's connected to, if you have some 
other serial device plugged in (a onerng for example) it wont be "/dev/
ttyACM0"

> I built the programmer myself so maybe I have some other issues of my own
> doing.

make sure you've loaded the firmware into the programmer, when you plug it in 
you should see a new /dev/ttyACM* created - 'dmesg' will report what that is

	Paul


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