TFT 5inches, ssd1963 and Mega 2560

Duval JP · Joined: 22 Jun 2004 Posts: 1161 Location: France

I delete it by error. Sad

so first let me show

http://www.dailymotion.com/video/x20w2ak_tft-arduino_tech

That is the fantastic job and help of H. Kipnik . his code is perfect , fast , the use of SD card Touch screen is well done.

JP Wink

albertsm · Joined: 09 Apr 2004 Posts: 5921 Location: Holland

yes great work indeed, thanks for uploading.

Also thanks for the demo video. Was nice to watch.

MirekW · Joined: 30 Dec 2014 Posts: 4

Dear, I use for testing my set this software. I have problem because the image is upside down. Do you know what I should change in the program to have correct display?
In other words, how to turn the display text or image 180 degrees.
Best regards,
Mirek

Duval JP · Joined: 22 Jun 2004 Posts: 1161 Location: France

Hello,
And bienvenue in this sub forum,

As I said I show "the fantastic job and help of H. Kipnik . his code is perfect , fast , the use of SD card Touch screen is well done. "
with his approval.

If you look for a little bit in the rems on the head you'll find his mail address.
but before look at to the file "ssd1963_function.inc" you will find the sub
'-------------------------------------------------------------------------------
' set_window Set Window Area to write data
'-------------------------------------------------------------------------------
Sub Lcd_set_window(byval Xpos As Word , Byval Ypos As Word , Byval Xsize As Word , Byval Ysize As Word)
Local X_add As Word , Y_add As Word
Local Tem As Byte
X_add = Xpos + Xsize
Decr X_add
Y_add = Ypos + Ysize

Y_add = 480 - Y_add
Ypos = 480 - Ypos

Call Ssd1963_select_reg(set_column_address)
Tem = High(xpos)
Call Ssd1963_write_data(tem)
Tem = Low(xpos)
Call Ssd1963_write_data(tem)
Tem = High(x_add)
Call Ssd1963_write_data(tem)
Tem = Low(x_add)
Call Ssd1963_write_data(tem)

Call Ssd1963_select_reg(set_page_address)
Tem = High(y_add) 'ypos
Call Ssd1963_write_data(tem)
Tem = Low(y_add)
Call Ssd1963_write_data(tem)
Tem = High(ypos) 'yadd
Call Ssd1963_write_data(tem)
Tem = Low(ypos)
Call Ssd1963_write_data(tem)
Call Ssd1963_select_reg(write_data_to_gram)
End Sub

you can maybe play a with the XY pos
let me know please
JP

MirekW · Joined: 30 Dec 2014 Posts: 4

Thank you for responce. Yesterday I did display correct - in 2 line in code:

Call Ssd1963_select_reg(&Hba) 'Gipo 3:0 out1
Call Ssd1963_write_data(&H01) '0f <----------------------- was 0f is 01

Call Ssd1963_select_reg(&Hb8) 'Gipo3=input Gipo2=output Gipo0=normal
Call Ssd1963_write_data(&H07) '07

Call Ssd1963_write_data(&H01) ' !!!!!!!!!!!!!!!!!!!!!

MirekW · Joined: 30 Dec 2014 Posts: 4

On the other hand, if you can software control the backlight - enable, disable, lighten and darken?

Duval JP · Joined: 22 Jun 2004 Posts: 1161 Location: France

hello,
good question, so i asked to Itead Studio,
they gave me an answers
on the display ITB02 5" you have a self of 10µH near the connector and near a circuit with 5 pins : cat4237 (Is is not Write on this circuit), across a 10k you put 0v to the pin4 (shdn#) this pin is normally high and when you put it low the LED goes low,but your display is still running.

PIN DESCRIPTION
VIN is the supply input for the internal logic
The device is compatible with supply voltages
down to 2.8V and up to 5.5V. It is
recommended that a small bypass ceramic
capacitor (4.7uF) be placed between the VIN
and GND pins near the device. If the supply
voltage drops below 1.9V, the device stops
switching.
SHDN* is the shutdown logic input. When the
pin is tied to a voltage lower than 0.4V, the
device is in shutdown mode, drawing nearly
zero current. When the pin is connected to a
voltage higher than 1.5V, the device is
enabled.

I tryed it, it works
JP

MirekW · Joined: 30 Dec 2014 Posts: 4

Thank you for your answer. It turned out that in my 7 "LCD and shield, simply adjust the jumper on the PWM and everything works in this software. I can by this program lighten and darken the backlight. Enable or disable the backlight. Best regards.

samgsm · Joined: 01 Dec 2015 Posts: 26

HI Duval JP
Can I get your email?

Duval JP · Joined: 22 Jun 2004 Posts: 1161 Location: France

Samgsm,

Would you please explain why you request my Email, I agree to make private discussion but, let me know the subject and your Email, I will send back a answers.

Regards

Wink

JP

samgsm · Joined: 01 Dec 2015 Posts: 26

I need help from you in the ECG project and use the screen 7 "TFT please"
How can I draw this model the existence of variables (P - R -Q -S -T) with the change of time in minutes on the screen (TFT SSD1963) by (Bascom Avr ) ?

Duval JP · Joined: 22 Jun 2004 Posts: 1161 Location: France

Thank you for your trust, I do not know if I am able to answer you...
and I do not know if a M2560 is sufficient in terms of clock speed.
How do you get this curve? It is a voltage from a sensor, I guess
in how much time is it measured?

Ben Zijlstra , H. kipnik six1 did a nice job with a 7" display and a XMEGA at 32Mhz

http://wiki.mcselec.com/7_inch_display_board

my experience with 5-inch showed me that the display of drawings takes time.
You should try to start by tracing a voltage from a function generator, this is not very difficult, measure the voltage
transform in pixel and display the points in X Y, the problem is that to refresh the screen it is not instantaneous as an oscilloscope

Anyway,
go by step and good luck!

JP

samgsm · Joined: 01 Dec 2015 Posts: 26

HELLO
I want to ask about the Method of drawing pixels depending XY variable values,
to drawing graph line
Suppose y is the time
x is DC input

Duval JP · Joined: 22 Jun 2004 Posts: 1161 Location: France

if you use
"SSD1963_functions.inc"
you will find
Sub Lcd_set_pixel(byval X1 As Word , Byval Y1 As Word , Color As Word)

where X 1, Y1 are the coordinates of point X (varies from 0 to 479) Y (varies from 0 to 799)
X is a function of the voltage
Y is function of time
If the voltage varies between 0 and 5V, you have 479 points to 5V
If you make a measurement every 10 ms you have 7990 ms for Y

JP

samgsm · Joined: 01 Dec 2015 Posts: 26

Thank you "to you (M.JP) for your cooperation with me, but you can look at this work and guiding find fault I do not know what is !!! Can you fix it please