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Promote your products and...
Forum: General Questions
Last Post: abhi8533
07-16-2019, 09:07 AM
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Forum: General Questions
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07-16-2019, 09:06 AM
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Issue with mojo/edid_rom/...
Forum: General Questions
Last Post: ocr
07-12-2019, 04:20 PM
» Replies: 0
» Views: 16
Io element to shield conn...
Forum: General Questions
Last Post: Torkle
07-04-2019, 12:12 PM
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New to FPGA - HDMI projec...
Forum: General Questions
Last Post: crazy-logic
07-01-2019, 04:43 PM
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Alchitry CU Constraints
Forum: General Questions
Last Post: delop
06-27-2019, 12:57 AM
» Replies: 3
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Powering the Mojo V3 and ...
Forum: General Questions
Last Post: Snoogerbot
06-19-2019, 04:18 PM
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Best Travel Doctor Sydney
Forum: Announcements
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06-11-2019, 05:13 AM
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Lucid for other boards
Forum: General Questions
Last Post: alchitry
06-03-2019, 04:29 PM
» Replies: 1
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Expansion shield for mojo
Forum: General Questions
Last Post: alchitry
06-03-2019, 04:28 PM
» Replies: 2
» Views: 274

  Promote your products and services by SMO services in India
Posted by: abhi8533 - 07-16-2019, 09:07 AM - Forum: General Questions - No Replies

SMO services have grown for business so this is the increasing reach of social media optimization by social networking sites. SMO services in India are designed to help companies create an online identity of products and services and increase the customer or brand value and create customer services through online social networks. SMO and SEO services both are mainly used to increase online visibility on the website so if you need a genuine customer for your products your help by digital media marketing services. social media optimization services target search engines and their results because users getting services in a short time. for more information click on the website link and contact our digital marketing team.

  Make your finest website by a web development company
Posted by: abhi8533 - 07-16-2019, 09:06 AM - Forum: General Questions - No Replies

In this competitive market, many companies are in the race in enhancing online visibility and a more profitable technique in little investment. this time social media, internet, and website are a trend now for most organic customers, users and many others to profitable business by the website. web development informs every businessman which have small products but services available are in the local city so this time needs your web development company who make your products website and your business more profitable and more popular in the world by a small investment. digital marketing services are powerful on online media which convert to small to big business. for more information just click on our website and contact us to make the best and finest website for your small business.


  Issue with mojo/edid_rom/i2c_slave.
Posted by: ocr - 07-12-2019, 04:20 PM - Forum: General Questions - No Replies


It seems there is a bug in i2c_slave implementation for Mojo/HDMI Shield. I have used rk3328 box as HDMI source in HDMI pass through scenario. On HDMI source I can see error: "failed to get edid".

Inside i2c_slave.luc there is state transition from READ_ACK_WAIT to WRITE_BYTE. It is good idea to check master's ACK/NACK before going to WRITE_BYTE again. Go to IDLE state if master responds NACK. Currently it goes into WRITE_BYTE anyway and continues to write into bidirectional sda line. Such behavior considered incorrect. For more details see please patch in attachment.


Attached Files
.txt   fix_i2c_slave.txt (Size: 354 bytes / Downloads: 4)

Shocked Io element to shield connector
Posted by: Torkle - 07-04-2019, 12:12 PM - Forum: General Questions - No Replies

How do I easily convert an io element into an io shield to stack onto the mojo dev board? Many thanks

  New to FPGA - HDMI project
Posted by: crazy-logic - 07-01-2019, 04:43 PM - Forum: General Questions - No Replies

Hi all, 

I'm new to FPGA's but have a background in PIC/Arduino projects. I would like to grab a mojo board and the HDMI shield and then be able to make modifications to the image "live". 

I imagine I can store the image in a frame buffer and then output that frame rather than processing pixel by pixel in a live fashion. (separating the input and output clocks). Going forward I would like to be able to do things like fade to and from black (or other colour), load in stills into a separate buffer and fade to and from them, And possible scale 1/4 of the screen input to be full output. I realise this is all quite ambitious, but the mojo and HDMI shield look like they would fit the bill for learning how to do these things? 

Anyone got any tips, advice or suggestions or support they would like to share with me? 


  Powering the Mojo V3 and AU through the RAW voltage pins
Posted by: Snoogerbot - 06-19-2019, 04:18 PM - Forum: General Questions - No Replies

So I have a question that applies to both the Mojo V3 and the Au boards.

I know that both can be powered through the RAW voltage pins mixed in with the I/O pins. My question is, is it safe to plug in USB for programming while the board is being powered this way? Can these boards be programmed "in circuit" without damaging the board or the computer? Do I need to remove them from the project before programming?

  Best Travel Doctor Sydney
Posted by: DymocksBuilding - 06-11-2019, 05:13 AM - Forum: Announcements - No Replies

 Discover bestTravel Doctor SydneyTravel Doctor  office is at Level 7, Suite B in Dymocks Building. All of our doctors and nurses are trained in travel medicine and travel doctor offer completely up-to-date international advice.Dymocks Sydney is the house of 120 specialised stores including: Health &Beauty,Gym Classes,Wedding Stores,Barre Sydney,Pilates Yoga and many more other to fulfill your shopping and professional needs. Browse us to know more

  CuBr pins
Posted by: samuelcomeau - 05-19-2019, 09:52 PM - Forum: Tips and Tricks - No Replies

Hello all, 
I noticed the was not a convenient list of what physical pins of the Cu board connects to what header on the Br board. So I figured it out and am going to post the .pcf file here. I also have a template for icestorm builds using that pcf. I was wondering if I should submit a pull request and to which projects if any. Would anybody be interested? Also, did I duplicate work by accident?

Attached Files
.txt   pins.txt (Size: 1.68 KB / Downloads: 19)

  Lucid for other boards
Posted by: only1sale - 05-17-2019, 08:39 PM - Forum: General Questions - Replies (1)

Hi, I am just learning about FPGA and programming it and don't know much about it.
I was wondering if Alchitry Labs and the Lucid IDE can be used to program other boards that have a different usecase but posses the Xilinx chip, like the ettus USRP?

  5 ways to debug - what do you use?
Posted by: kpelckmans - 05-13-2019, 07:32 AM - Forum: General Questions - No Replies

Hi all,

In my FPGA adventures, I quickly stumbled onto the "FPGA Hell", so now I am looking how to debug the signals going through the Alchitry boards.

Which tool do you prefer and why?

  1. Alchitry wave capture
    [Image: wavecap.gif?v=1516210021]

  2. Wishbone controlled scope to capture vcd and show in gtkwave, setup described in this article
    [Image: memscope.png]

  3. Vivado debugging Integrated Logic Analyzer ILA
    [Image: 1492471766607.png]

  4. Litescope, wich can also export to sigrok
    [Image: Sigrok_intro_5-ds1307-decode.png]
  5. Your own debug statements sent over uart
I am curious to hear which one you use and why!