Display TFT ST7789 (OshonSoft Basic).

DogFlu66 · Jun 7, 2024

I leave the library to use ST7789 TFT display, I have translated one that is in C language. But unfortunately I have not been able to get it to work yet. I leave the files in case someone with more experience with these displays can review it.

camerart · Dec 26, 2024

Hi,
You may have followed my other threads, where I prove that I'm not a natural programmer, and on the main other thread, after 5 years of development, I failed to finalise it.
This thread is going the same way for me.
It seems like we all have a different way of programming, that I find simply to hard to follow everybody.

I'm going to drop out of this one, as it just too hard for me.
As you can see from my posts here, I have programs working using others CODE along with mine. I'll just play with these is my simple way and see what I can do.

Thanks for all of your efforts.
C

Ian Rogers · Dec 26, 2024

If its any consolation, I know I've been missing ( work and Christmas ) but I cannot get your board to give a decent clock pulse, So If I cannot, well...

Never give up..

DogFlu66 · Dec 26, 2024

camerart said:
Hi,
You may have followed my other threads, where I prove that I'm not a natural programmer, and on the main other thread, after 5 years of development, I failed to finalise it.
This thread is going the same way for me.
It seems like we all have a different way of programming, that I find simply to hard to follow everybody.

I'm going to drop out of this one, as it just too hard for me.
As you can see from my posts here, I have programs working using others CODE along with mine. I'll just play with these is my simple way and see what I can do.

Thanks for all of your efforts.
C

What is not working for you?. Have you tried the example (thread #267) that I posted for TFT ILI9341 with Pic18F46K20 microcontroller?.
If it does not work for you, I recommend that you update the Oshonsoft Pic Basic.

The example works with a 32Mhz oscillator and an 8Mhz SPI bus, in case your display does not work with the 8Mhz SPI bus (your display is slower) you can lower the speed to 2Mhz by changing:
Call LCD_SPI1_Init(LCD_SPI_MODE2, LCD_SPI_MASTER_SPEED0 | LCD_SPI_ENABLE) 'CLK 8Mhz (32Mhz) by Call LCD_SPI1_Init(LCD_SPI_MODE2, LCD_SPI_MASTER_SPEED1 | LCD_SPI_ENABLE) 'CLK 2Mhz (32Mhz)

Which card should I use anyway?.

camerart · Dec 27, 2024

Ian Rogers said:
If its any consolation, I know I've been missing ( work and Christmas ) but I cannot get your board to give a decent clock pulse, So If I cannot, well...

Never give up..

Hi I,
I'm long retired now, but I remember the days when I had to work Christmas and new years day, I dare say that you had a bit of cake ? There's no hurry.

Regarding the clock! Do you mean the SPI CLK or the OSC?
If it was the SPI CLK, then did you see my analyser posting?

Display TFT ST7789 (OshonSoft Basic).

I leave the library to use ST7789 TFT display, I have translated one that is in C language. But unfortunately I have not been able to get it to work yet. I leave the files in case someone with more experience with these displays can review it.

www.electro-tech-online.com

Perhaps if you let me know in detail, what you did exactly, I'll do the same and post my result.
C

camerart · Dec 27, 2024

DogFlu66 said:
What is not working for you?. Have you tried the example (thread #267) that I posted for TFT ILI9341 with Pic18F46K20 microcontroller?.
If it does not work for you, I recommend that you update the Oshonsoft Pic Basic.

The example works with a 32Mhz oscillator and an 8Mhz SPI bus, in case your display does not work with the 8Mhz SPI bus (your display is slower) you can lower the speed to 2Mhz by changing:
Call LCD_SPI1_Init(LCD_SPI_MODE2, LCD_SPI_MASTER_SPEED0 | LCD_SPI_ENABLE) 'CLK 8Mhz (32Mhz) by Call LCD_SPI1_Init(LCD_SPI_MODE2, LCD_SPI_MASTER_SPEED1 | LCD_SPI_ENABLE) 'CLK 2Mhz (32Mhz)

Which card should I use anyway?.

Hi D,
I updated both the IDE and Comp (why two?) 573

I took me ages to figure out which of your bits goes into OSH, but I think I got it in the end, and it doesn't work.

Is it that you use a big chip and on my PCB is SMD?
Is it that I use 'cloned' TFT ILI9341?
Is it due to capacitance?

I noticed that after trying your CODE, my CODES don't work, until I've found 'say' and old 240X240 CODE, then work up to the later ones, and I wonder if the TFT ILI9341 stores set-ups and uses them later?
Perhaps like this https://www.electro-tech-online.com/threads/display-tft-st7789-oshonsoft-basic.166219/post-1457383

I think first I'll try to address 'I's' OSC, then perhaps it will 'oil some wheels'?

As mentioned this is really hard for me, so please explain in more detail, if I am involved please?
C.

DogFlu66 · Dec 27, 2024

camerart said:
Hi D,
I updated both the IDE and Comp (why two?) 573

I took me ages to figure out which of your bits goes into OSH, but I think I got it in the end, and it doesn't work.

Is it that you use a big chip and on my PCB is SMD?
Is it that I use 'cloned' TFT ILI9341?
Is it due to capacitance?

I noticed that after trying your CODE, my CODES don't work, until I've found 'say' and old 240X240 CODE, then work up to the later ones, and I wonder if the TFT ILI9341 stores set-ups and uses them later?
Perhaps like this https://www.electro-tech-online.com/threads/display-tft-st7789-oshonsoft-basic.166219/post-1457383

I think first I'll try to address 'I's' OSC, then perhaps it will 'oil some wheels'?

As mentioned this is really hard for me, so please explain in more detail, if I am involved please?
C.

Let's go step by step:

I updated both the IDE and Comp (why two?) 573
Ok, one less thing.

I took me ages to figure out which of your bits goes into OSH, but I think I got it in the end, and it doesn't work.
-----------------

Is it that you use a big chip and on my PCB is SMD?
There is no difference.

Is it that I use 'cloned' TFT ILI9341?
There shouldn't be any difference. If the quality is worse, they may be slower.

Is it due to capacitance?
It may cause communication with the display to be slower. This may lead to having to set the SPI bus CLK speed to less than Mhz.

I noticed that after trying your CODE, my CODES don't work, until I've found 'say' and old 240X240 CODE, then work up to the later ones, and I wonder if the TFT ILI9341 stores set-ups and uses them later?
I don't think that can be.

Perhaps like this https://www.electro-tech-online.com/threads/display-tft-st7789-oshonsoft-basic.166219/post-1457383

I think first I'll try to address 'I's' OSC, then perhaps it will 'oil some wheels'?

As mentioned this is really hard for me, so please explain in more detail, if I am involved please?
I think we should start at the beginning.

DogFlu66 · Dec 27, 2024

The first thing is to establish the microcontroller used, is it the Pic18F46K20? and what card do you use?.

camerart · Dec 28, 2024

DogFlu66 said:
The first thing is to establish the microcontroller used, is it the Pic18F46K20? and what card do you use?.

Hi D,
I'm using an 18F46K20 pic, fitted at the left on a PCB, I have that was developed for another project (using Nokia 5110 screens)
I posted one of these boards to Ian, and I suggested that Ian and I figure out a possible CLK issue with these PCBs (I'm not sure which clock yet?)

EDIT: I just looked at I's post and now see it is the SPI CLOCK, so I'll check my PCB :https://www.electro-tech-online.com/threads/display-tft-st7789-oshonsoft-basic.166219/post-1458363
C

camerart · Dec 28, 2024

Hi,
I am trying to figure out what's happening, and re-looked at my post: https://www.electro-tech-online.com/threads/display-tft-st7789-oshonsoft-basic.166219/post-1458411

It's a pity that no one else checked it and told me that this is incorrect. So I've had incorrect CKP and CKE since then also possible slew (What ever that is?).
This is why I don't think I can be useful in this thread at my level, with my persistant errors, that take so much time and energy to find.
C

DogFlu66 · Dec 28, 2024

Well, let's leave that for now and continue from the beginning, does the card have an RS232 serial port?.

camerart · Dec 28, 2024

DogFlu66 said:
Well, let's leave that for now and continue from the beginning, does the card have an RS232 serial port?.

Hi D,
I presume you mean the 18F46K20 on my PCB when you say 'card', then yes it does have an RS232.
C.

DogFlu66 · Dec 29, 2024

I understand that the serial port is configured with the standard pins C6 and C7.
The next step is to have the same configuration in the IDE:
Options:
The "Initialize Variables Declaration" option has to be disabled.

In Options again:
Open "Advanced Compiler Options" and select as follows:

Once you know that the configuration is the same, test that everything works, load the .hex file and having the card connected to the computer to the serial port and to a serial console configured to 115200 Bauds, test that it works, this is what the serial terminal should show:

If everything goes well we continue.

camerart · Dec 29, 2024

DogFlu66 said:
I understand that the serial port is configured with the standard pins C6 and C7.
The next step is to have the same configuration in the IDE:
Options:
The "Initialize Variables Declaration" option has to be disabled.
View attachment 148258

In Options again:
Open "Advanced Compiler Options" and select as follows:
View attachment 148259

Once you know that the configuration is the same, test that everything works, load the .hex file and having the card connected to the computer to the serial port and to a serial console configured to 115200 Bauds, test that it works, this is what the serial terminal should show:
View attachment 148263

If everything goes well we continue.

Hi D,
Am I to do this on my working CODE or your none working CODE?
C

DogFlu66 · Dec 29, 2024

That has nothing to do with the codes, it is the configuration you have to have in the IDE.

Now we are interested in knowing that the clock frequency is what we want.

camerart · Dec 29, 2024

DogFlu66 said:
That has nothing to do with the codes, it is the configuration you have to have in the IDE.

Now we are interested in knowing that the clock frequency is what we want.

Hi D,
Can you clarify? Is this for a particular test your are explaining, or should I have ticked those boxes all along?
C.

DogFlu66 · Dec 29, 2024

That's the configuration you need to have.

camerart · Dec 29, 2024

DogFlu66 said:
That's the configuration you need to have.

Hi D,
Have I always needed it?
C.

DogFlu66 · Dec 29, 2024

It’s not that this configuration is magical or that applying it will automatically make all your previous codes work. That’s not going to happen. However, this is the configuration I use to avoid slight discrepancies between your code and mine.

For example: If I write the following in my code:
Dim x as Byte
Dim y as Byte
x = 1;
y = 2;
x = y = 3;

With the configuration I propose:

x = 3 and y = 3.

Without this configuration, multi-assignment cannot be guaranteed to work correctly. Additionally, there are other minor details, such as the automatic initialization of variables in functions. Personally, I do not use automatic variable initialization.

When working as a team to solve problems, it’s best to use the same configurations. Once the problem has been resolved or the environments have been synchronized, everyone can use their preferred configuration.

camerart · Dec 29, 2024

DogFlu66 said:
It’s not that this configuration is magical or that applying it will automatically make all your previous codes work. That’s not going to happen. However, this is the configuration I use to avoid slight discrepancies between your code and mine.

For example: If I write the following in my code:
Dim x as Byte
Dim y as Byte
x = 1;
y = 2;
x = y = 3;

With the configuration I propose:

x = 3 and y = 3.

Without this configuration, multi-assignment cannot be guaranteed to work correctly. Additionally, there are other minor details, such as the automatic initialization of variables in functions. Personally, I do not use automatic variable initialization.

When working as a team to solve problems, it’s best to use the same configurations. Once the problem has been resolved or the environments have been synchronized, everyone can use their preferred configuration.

Hi D,
Interesting, thanks.

If more than one computer is used, do these settings move with the CODE, or does each computer need to be configured?
C

DogFlu66 · Dec 29, 2024

These settings are done in the IDE (compiler), they do not go with the code. They stay on the computer.

Display TFT ST7789 (OshonSoft Basic).

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