EasyMx PRO v7 for STM32F107 RiverdiClick 7"

Message

GermPl · #1 Post by **GermPl** » 08 Oct 2018 10:20

Hello,

I can't get my RiverdiClick board and Riverdi Display 7" UXB to work.
I uploaded multiple codes but without succes.

When I check the SPI communication I get the following scope image:

: SPI lines; SPI SCREEN.jpg (131.22 KiB) Viewed 1964 times

The MISO line is a bit strange.

And the screen does litterly nothing. It doens't even flicker when I power it.
The EasyMX Pro board is externally powered by an 12V power block.(yes I set the jumper to EXT)
Here are my connections to the screen:

: Connections; P_20181008_111217_vHDR_On small.jpg (114.01 KiB) Viewed 1964 times

I measured the voltage on the screen and it was 3.3V. So I assume it is al good.

Can annyone please help me?
Because I don't know what I am doing wrong.

Best Regards.

Ps my code is in the attachments

GermPl · #2 Post by **GermPl** » 09 Oct 2018 09:30

I've already found out what I did wrong.
FT812_Core_ClockSource(_FT812_CLK_SOURCE_INTERNAL);
I had it on EXTERNAL and didn't reset the board completly by turning it off.

#3 Post by **petar.suknjaja** » 09 Oct 2018 11:04

Hi,
I believe we have come to the solution on the Helpdesk.
Kind regards,
Petar

guidofor · #4 Post by **guidofor** » 28 Apr 2021 18:24

Hi,

unfortunately I have the same problem with Riverdi Click and the 7" RVT70AQFFWN00 (no touch panel, FT812 controller). In the beginning with external oscillator same runt pulses on the MOSI line, then I changed the FT812 clock source to internal as you did, since then the MOSI line has been driven correctly and the SPI interface seems working fine. Regrettably what I can get now on the display is plain garbage but at least it is not dead black, I could see the same problem experienced by another user in this forum. Regrettably VTFT is not doing a good job about displays with resolution from 800 x 480 up since when creating a new HW pattern in the project options, it sticks to parameters for lower resolutions. So I modified those parameters guessing them from the Riverdi datasheet and wrongly left the FTDI clock source to internal as set by VTFT, resulting in a black screen. Later I found new parameters for 7" Riverdi displays which according to the forum staff member who posted them, should work fine but as it can be seen by the attached photo, left the same garbage. I am wondering if my brand new display is faulty and I should ask for replacement under warranty or there is a way to make it work as I hope with correct parameters.

Kind regards