Rules and Permissions for USB Blaster Setup in Linux Virtual Machine



SOURCE: https://stackoverflow.com/questions/18704913/unable-to-lock-chain-insufficient-port-permissions

If when jtagconfig is ran

1) USB-Blaster varient [2-1]
	unable to lock chain(Insufficient port permissions)

is returned and Quartus cant program your FPGA. The following steps should fix this problem. An amazing resource on setting up Quartus and other Altera related design software is Altera Design Software

Before a USB Blaster can be used its jtag rules and permissions must be configured.

First kill jtagd.

sudo killall -9 jtagd

If jtagconfig is ran whilst jtagd is already running then jtagconfig will have no effect. jtagd and jtagconfig can be found in

/altera/3.1/quartus/bin

And can be executed using

./jtagd 
./jtagconfig

As root create file /etc/udev/rules.d/51-altera-usb-blaster.rules

Inside the file, include

SUBSYSTEM=="usb", ATTR{idVendor}=="09fb", ATTR{idProduct}=="6001", MODE="0666"
SUBSYSTEM=="usb", ATTR{idVendor}=="09fb", ATTR{idProduct}=="6002", MODE="0666"
SUBSYSTEM=="usb", ATTR{idVendor}=="09fb", ATTR{idProduct}=="6003", MODE="0666"
SUBSYSTEM=="usb", ATTR{idVendor}=="09fb", ATTR{idProduct}=="6010", MODE="0666"
SUBSYSTEM=="usb", ATTR{idVendor}=="09fb", ATTR{idProduct}=="6810", MODE="0666"

The five idProducts are all the known USB-Blaster Download Cable USB product IDs (for the Altera vendor ID, 0x09fb).

Then run

sudo udevadm control --reload

Now run jtagd.

./jtagd

Before jtagconfig returned

  1. USB-Blaster varient [2-1] unable to lock chain(Insufficient port permissions)

Now, it returns

  1. USB-Blaster [2-1] 020F70DD EP3C120/EP4CE115

Go to Quartus II and open tools -> programming

In hardware setup the USB Blaster should be found as USB-Blaster and not USB-Blaster varient.

Other useful resources
https://blog.atomminer.com/fighting-altera-usb-blaster-on-ubuntu/ https://rileywood.me/2017/02/19/fpga_setup/

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