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  Explaining Breakouts..
Posted by: john.tilghman@protonmail.com - 02-03-2020, 07:59 PM - Forum: General Questions - Replies (6)

Could someone please explain to me the difference between what seems like much all the same thing..

I see in the reference sheet for the breakout board these:

Single Ended IO - I understand how this is different than -> Differential IO

Differential IO    - I understand how this is different than -> Single Ended IO

Analog Input - How is this different than other 2 ^

Analog Supply - What does this do ?


  Alchitry Lab & Mojo
Posted by: PTAa - 02-02-2020, 12:58 PM - Forum: General Questions - Replies (1)

Hello group,

I just tried to use Alchitry Labs Version 1.1.6 together with my Mojo V3.

I loaded the Mojo Blinker Demo project.
Build went flawless. However programming or erasing did not work.
Error: Could not detect a Mojo.
The Settings menu does not have an entry for setting the COMport.
So, apparently, the IDE does not realize it is about a Mojo.
Even if a Mojo project clearly is selected.

Maybe the Mojo is not supported any more?


  Could not create project folder
Posted by: PTAa - 02-02-2020, 11:04 AM - Forum: General Questions - Replies (1)

Hello group,

I am trying to use Alchitry Labs Version 1.1.6 with my Mojo V3.
Loaded the Mojo Base Project, but get the error message: "Could not create project folder!"
Can't figure out what is wrong.


Running Alchitry Labs as Aministrator, fixed the problem


  Reading analog inputs with the Alchitry Au
Posted by: john.tilghman@protonmail.com - 01-28-2020, 09:38 PM - Forum: General Questions - Replies (5)

Are there any examples of how to use the Alchitry Au with analog inputs ?

  Alchitry Labs can flash boards but Alchitry Loader cannot
Posted by: GENERATE_BITSTREAM - 01-25-2020, 01:19 AM - Forum: General Questions - Replies (1)

I can use Alchitry Labs to edit files, create the bitstream and flash the boards. However, when I use Vivado to edit files and then generate the bitstream then use the Alchitry Loader to load the bit file, I cannot.

When I use the command line tool with argument "-l" I get the following output:

    0: Unkown
    1: Unkown

I get this output when I put the board in any USB port and if I use the Au or Cu boards.

"lsusb" command shows the UART chip on the board is being detected by the computer with the correct name (FT2232C/D/H, which indicates the FT2232HQ chip which is labeled as U5 on the 4th page in the Cu schematic found here: https://cdn.shopify.com/s/files/1/2702/8...cu_sch.pdf and on page 5 in the Au schematic found here: https://cdn.shopify.com/s/files/1/2702/8...au_sch.pdf).

I have already copy and pasted the 99-alchitry.rules file into /etc/udev/rules.d as detailed in the instructions found here: https://alchitry.com/pages/alchitry-loader

I use Debian 10, a Linux distribution.

Any help and/or guidance would be greatly appreciated.

  USB host capability of Au or Cu?
Posted by: MichaelTuckwell - 01-24-2020, 08:08 PM - Forum: General Questions - Replies (1)

Does the Au or Cu have the capability to 
be used as a USB host to control multiple
USB peripheral devices?

In the Vivado IP Catalogue there's the
AXI Universal Serial Bus (USB) 2.0 Device v5.0,
Can this be used to provide USB 2.0 host capability? 
If so, how?

If not, can we interface with a USB host IC or
Arduino USB host shield? Has anyone here
Tried something similar?

I’ve played around with the UART and have 
Had success with sending and receiving text 
to a computer at 115200 baud, however this 
is not the real capability of a USB host.

Are there any plans for Alchitry to make
USB Host shields?

  Mojo-ide issue
Posted by: fmentiplay - 01-17-2020, 11:33 PM - Forum: General Questions - Replies (1)

I have a Mojo v3 board. I have set up the Xilinx ISE and installed Mojo-ide on Ubuntu 19.10 running in a VM on a Toshiba Laptop.

The Xilinx software runs fine. I have been doing exercises from Simon Monk's book "Programming FPGAs"
The Mojo-ide seems to work Ok I created a Project using the LEDtoButton Lucid file. I click on the mojo_top.luc and the file is displayed. I have setup the ISE location.

But when I attempt to build the project by selecting the hammer icon, after a few lines I get the following error message on the console in mojo-ide
"application: specific initialization failed: couldn't load file "librdi_commontasks.so": libncurses.so.5: cannot open shared object file: No such file or directory"

After using $sudo find command, these files exist on the ubuntu VM.
I have tried to google a solution without success 
I think it is a path problem but I can't figure it out.
Any help would be much appreciated.

  Burning MoJo board from Xilinx ISE
Posted by: gaba - 01-14-2020, 06:42 PM - Forum: General Questions - Replies (1)

I have a mojo v3 board and I was wondering if it is possible to program the FPGA directly from Xilinx ISE, i.e, avoiding the need for mojo IDE.
Even more, maybe someday the mojo IDE could be unsupported...and in that case, it would be great to be able to use the XIlinx ISE for programming.

  Alchitry Au - IP and such..
Posted by: john.tilghman@protonmail.com - 01-06-2020, 07:49 PM - Forum: General Questions - Replies (4)

Is it possible to create/use a soft core processor on the Au ?

And would this need Lucid or Vivado ?

Also are there PWM and such available ?

I am trying to create a motor controller for a robot.


  Connecting output device to Alchitry Br
Posted by: ubluntu - 01-05-2020, 01:54 PM - Forum: General Questions - Replies (2)

Complete beginner here
I've followed some Lucid tutorials for the Alchitry Cu and managed to get the code running. Now I want to connect an output device (a speaker) but I can't seem to find a component for the pins on the Alchitry Br. How can I access the pins in the Br?