"GLCD Font Creator" code is correct ???

[vortexe90]

hi guys, I used this routine to display fonts with high resolution. All the variables are 16-bit. I encode the numbers and special characters in the table "font11" from 32 to 64 ascii order. But still nothing is displayed in the GLCD by glcd_text57 against the routine works well.

Please help me

here are the codes,

the data of characters :

[vortexe90]

please a help .

[Ttelmah]

[vortexe90]

thanks Mr Ttelmah i will do it but also nothing in GLCD i believe that the problem is in the variable of glcd_pixel it must be 16-bit I think so!!

[Ttelmah]

No, the variable does not have to be 16 bit, but the code has to be written to correctly handle the size used.

Screaming problem is one word.

'short'.....

In CCS, a short is a _single bit_.

Change this to 'unsigned int8'.

This is why you will find experienced programmers don't use names like 'long', or 'short' for variables, but instead use _explicit_ names like 'int8', Uint8, int16 etc..

'Short', 'long' etc., have different meanings between compilers. This was a problem back when Microsoft updated VB, to VB.net, where the default meaning of long, was changed, leading to all sorts of problems when accessing external stuff in DLL's etc...

[vortexe90]

thanks Ttelmah, yes i do it but nothing too in the GLCD

I change this in the data caracters :

[Ttelmah]

You have still not done anything about char_offset....

Use your brain, rather than just hopelessly fiddling.

Feed a character number into the code.

Work out what elements it will access in the array, and then what the values it reads are. Set bits on a piece of graph paper as you read 0's and 1's.

You will see hopefully in a few seconds, that it is not accessing the data correctly....

[Markdem]

Looks like you are using my code

The code will work fine if you supply the right data in the font array.

At the top of my post in the library it says;
"To make the font array, have a look at http://www.mikroe.com/glcd-font-creator/. It outputs the array in microchip’s graphics library format. You want to use the “Export for TFT and new GLCD” option. "

The font array you have looks nothing like the format you need.
Try to use the font array I have posted to make sure your hardware is working fine, then try to make your own font array using the font creator.


Have fun

[in_nursery]

@Markdem or other

If I had multiple font how can I choose them

for example
const unsigned int8 font11[] and const unsigned int8 font20[].

[PCM programmer]

Edit the existing glcd_text57() function as follows:
1. Add a 'font' parameter to the end of the parameter list.
2. Add a test at the start of the function to exit without doing anything
if the font parameter is out of range.
3. Add an if-else statement to check the font parameter. If it's 0 then
use the normal font (included in glcd.c). If it's 1, then use your own
custom font.

I am doing this the most simple way possible. I mean the quickest
to implement. It adds a little bit in code size but was quick to type.

[in_nursery]

thanks PCM programmer

finally I get work with read_program_memory(mempointer, buffer, 1);