[SOLVED] CTE TFT with font ic, what size are the fonts please?

Using Arduino Displays
#1

Hi all,

I wonder if anyone with a CTE 5" or 7" would mind or could possibly give me the dimensions(pixels) of these fonts please?
If I had one of these, I would not need to ask, in the meantime, someone surely could help me out please?

BVS_13
BVS_15
BVS_19
BVS_22
BVS_28
BVS_34
BVS_43
BVS_52
BVS_74
BVS_112

Thanks and regards,

Graham

#2

Hi Graham,

I have a 7" TFT with a Winbond 25Q64BVSIG SPI flash memory installed.

from the demo code of 'CTE_70inch_800x480.ino', the following fragment can be found;

//Font selection
//BVS= Bitstream vera sans, suffix = font size in pixel (height)
#define BVS_13 10
#define BVS_15 12
#define BVS_19 14
#define BVS_22 18
#define BVS_28 22
#define BVS_34 28
#define BVS_43 38
#define BVS_52 53
#define BVS_74 78
#define BVS_112 122

As for the width, I do not know if it is the same as the height without flashing if the display.
Hope this helps for now.

Kind Regards,
Gary

#3

Graham,

Further to my post below, I have just found and flashed up my unit.

//BVS= Bitstream vera sans, suffix = font size in pixel (height)
#define BVS_34 28

The BVS is a proportional font.
For the above example, the visible part of a capital T is 21 pixels high and 18 pixels wide. A Capital W would be wider.

So the pixel width varies.

I hope this helps some more.

#4

Hi Graham,

The last W would not be vertically aligned.
I have attached to photographs for you.
Of course, you can use fonts drawn by the Arduino, but there may a speed penalty by not using the on-board font IC.

I use TFT displays, Only one of my displays has a font IC on it. It is quicker to write text using the font IC.
It would depend on your requirement.

See attached pics.

DSCN2716-email.jpg
DSCN2716-email.jpg4513×2583 367 KB

DSCN2717-email.jpg
DSCN2717-email.jpg4549×2586 575 KB

#5

please give content (backup) spi flash, which is on display. I accidentally erased it

#6

Dear Graham,

A suggestion is to look at the UTFT.cpp & UTFT.h library files ("modified by coldtears electronics to suite CTE TFT Modules") as the code reveals the method of reading and applying each character width when writing to the LCD. Although I have not decoded the font ic data, my understanding is that for each font size or height, the individual character has some header bytes describing the width of that character.

I hope this helps.

#7