I do have a RVT70HSBNWC00-B up and running on my desk right now and it is doing just fine, strange.
My setup is for 51MHz PCLK to get about 60Hz, if that would not be working I would get flickering as well since
my display-refresh is at 50Hz.
I just added measuring the frequency and frames per second to this project and it works as expected.
delay_s1++;
if(delay_s1 > 199)
{
delay_s1 = 0;
eve_frames_new = EVE_memRead32(REG_FRAMES);
eve_frames = eve_frames_new - eve_frames_old;
eve_frames_old = eve_frames_new;
eve_frequency_new = EVE_memRead32(REG_CLOCK);
eve_frequency = eve_frequency_new - eve_frequency_old;
eve_frequency_old = eve_frequency_new;
}
This is executed every 5ms so the the values are measured once a second.
And then I just display it:
EVE_cmd_text_var_burst(500, 100, 28, EVE_OPT_FORMAT, "Frequency: %d",1,eve_frequency);
EVE_cmd_text_var_burst(500, 130, 28, EVE_OPT_FORMAT, "Frames/s : %d",1,eve_frames);
The result right now is:
Frequency: 72003998 to 72004409
Frames/s: 59 or 60
What controller are you using?
And can you rule out electrical issues?
My board is using two step down regulators, one for the 3.3V logic and one for the 5V backlight.
At only 0x30 for the backlight and with 7V from my PSU the display plus controller-board is drawing 310mA right now.
Setting the backlight to 0x00 and confirming with a flashlight that the display is still up and running, the current drops to 154mA.
So the 3.3V path needs around 300mA and the 5V path needs around 200mA.