Guacamoleroger

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  1. Guacamoleroger

    PmodCLS with 20x4 LCD

    Hi JColvin, Thanks for your promptly reply and explanations. I would like to present here the suggestions to Digilent to offer a 20x4 display and a 8-bits serial to parallel SPI board. Although we have so many fancy high-resolution, touch-screens displays available nowadays, for a first step on a product development or simple applications, this kind of LCD module is still useful. Thank you again, Guacamoleroger
  2. Guacamoleroger

    PmodCLS with 20x4 LCD

    Hi, JColvin, Thanks for your return ! I am still working on this issue. Sorry if I was not clear. You know, digilent display has 16 characters on each of its 2 lines. I have a 20 characters on 4 lines display. It is not related with the pixel x pixel char formation. My main question is: If I disconnect the 16x2 LCD from the main PmodCLS board and connect the 20x4, does the software on PIC will display correctly? I noticed that the instruction set of PmodCLS could be set to (5B 5B)1h (set display mode, 0 = wrap line at 16 character, 1 = wrap line at 40 characters). The HD44780 supports 20 chars on two lines (total 40 chars). But it is not sequential. The 17th char appears on the 3rd line and the 41th char appears on 4th line. Does this 40 chars means (probably) two "lines" of 20 chars? Regards, Guacamoleroger
  3. Guacamoleroger

    PmodCLS with 20x4 LCD

    Hy, guys, I am using the PmodCLS, and although it is retired now (October 2018), my project is ongoing with 4 of them, using an adapted VHDL demo code from resource center. I am in need of using one 20x4 LCD module instead of the 16x2 I have there. As a first innocent try, I just connected in parallel the 20x4 pins with the 16x2 pins. The 16x2 continue to work, but the 20x4 shows only squares...(contrast and backlight connections are ok). In the demo lookup file it does not seems to have a configuration command for the LCD. Is PmodCLS automatically configured for 16x2? How could I use a 20x4 LCD on PmodCLS? Does anyone have the information about the instructions set of PmodCLS that could be used on a 20x4 LCD? Thanks for your help, Guacamoleroger
  4. Guacamoleroger

    Linux on Digilent boards

    Hi, Jpeyron, Thanks for the tips!
  5. Guacamoleroger

    Linux on Digilent boards

    Hi, guys, I am in need of a Digilent board to run Linux with a GUI to have access to IOpins and peripherals, and also to work together with the vhdl codes on the FPGA. I am not sure how to install Linux on SD card, start a boot from there, ANDhave at the same time a vhdl code running on FPGA that I could edit and compile using the vivado (2018.2). The idea is to have the vhdl code running the hardware and the GUI on linux to present values of input, output, make the configuration on-line of the vhdl variables, etc... I was thinking about the Zybo board. Can someone give me, please, some directions and/or suggestions? Regards,