A tft addin for pbp3

[richard]

The 2.2 " ili9341 (ili9340c how do tell) arrived today , after resoldering all the dry joints on the module it works .
I have separated things out like this main pbp pgm --- usercommand pbpmod file , an include bas file for either st7735 or ili9341 and a font bas file


in the pbp file
your hardware connections

;----GLOBAL----HW---------   
    SSP_IF VAR PIR3.7      ; must match your spi port 
   tft_dc_bit con  32     ;5      binary weighted pin values 
    tft_cs_bit con 16   ;4 
    tft_rst_bit con 128   ;7
    tft_port var lath ;          ; the output port for control signals

includes

    INCLUDE "glcd_chr.pbpmod"        ;glcdc
    include "tft-ILI9431.bas"      one or the other  not both
;    include "tft-ST7735.bas"      one or the other  not both

    INCLUDE "DT_INTS-18.bas"
    INCLUDE "ReEnterPBP-18.bas"
    INCLUDE "Elapsed_INT-18.bas"
    INCLUDE "font7x8.bas"

in the usercommand file glcd_chr
WIDTH con 320;160 X
HEIGHT con 240; 128 Y
set to appropriate values

and this bit needs to match your spi port too a definite conditional compile potential here

     
TFT_CMD:
spi_cbyte :
    tft_port =  tft_port & (~ tft_dc_bit )
TFT_DATA:    
spi_byte :
@       movff    INTCON , _p_int 
@       bcf     INTCON ,7 
    tft_port =  tft_port& (~ tft_cs_bit )
    SSP_IF = 0
    SSP2BUF = CMD 
    WHILE   SSP_IF =0 ' wait for SPI interupt flag
    wend
    tft_port = tft_port |   ( tft_dc_bit|  tft_cs_bit   )
    
@     movff  _p_int  , INTCON 
return

and off you go

I would have liked to have the hw connections and the height width in the relevant hw include file but that presented too many issues for me

[Aussie Barry]

Hi Richard,

I am keen to replicate the great work you are doing with these TFT displays.
I have looked on eBay for an ILI9341 display and there appears to be a gazillion of them to choose from.
Can you share information on the eBay seller you bought your display from?

Cheers
Barry
VK2XBP

[richard]

hi barry ,these are what I used I'm sure the others would be ok too just make sure the I/f is spi
http://www.ebay.com.au/itm/271683495...%3AMEBIDX%3AIT
http://www.ebay.com.au/itm/191534577...%3AMEBIDX%3AIT

[Aussie Barry]

Thanks Richard.

I have now placed an order and hope to take delivery some time in July.

Cheers
Barry
VK2XBP

[Gusse]

Very nice work Richard!
ILI9341 based TFT display with resistive touch screen could be the module that I was searching.
With STMPE610 touch controller (SPI/I2C) it would be easy to make systems that do not need any additional input devices (buttons/joystick).

[visnja30]

Hi Richard

I am little confused how to adjust code to work.
I have a PIC18F45K22 and I plan to use it with your code but I never work with this PIC processor and I need some Help to configure it.


From datasheet of PIC18F45K22 PORTD.0 is SPI clock and PORTD.4 i SPI data out.

What I must change in your TFT_demo code to adjust PIC pin to work with TFT display.
Whether the pins of TFT displays D/C and RESET connected together on the same pin of the PIC processors or not.

;----GLOBAL----HW---------   
    SSP_IF VAR PIR3.7
    tft_dc_bit con  32     ;5
    tft_cs_bit con 16   ;4 
    tft_rst_bit con 128   ;7
    tft_port var lath 
  
  
  

    INCLUDE "glcd_chr.pbpmod"        ;glcdc
    include "tft-ILI9431.bas" 
;    include "tft-ST7735.bas"
    INCLUDE "DT_INTS-18.bas"
    INCLUDE "ReEnterPBP-18.bas"
    INCLUDE "Elapsed_INT-18.bas"
    INCLUDE "font7x8.bas"
    

ASM
INT_LIST  macro    ; IntSource,        Label,           Type,   ResetFlag?
        INT_Handler   TMR1_INT,   _ClockCount,   PBP,  yes
    endm
    INT_CREATE

 
ENDASM  
@ INT_ENABLE  TMR1_INT 
  
   
 
 
 


  
  define OSC 48
 
'   osccon=$70   '64 mhz
   OSCTUNE.6=1 
   trisb.7=0
   trish=0        ' each pin on d has a led  for debug
   trisd.6=0     ;sck
   trisd.4=0      ;sdo
  
    BOXX VAR  BYTE
    BOXY VAR  BYTE
    BOXZ VAR  BYTE
    disp var byte
    tmp var word
    buff var byte[32]
   SSP2CON1=$20  ;$20 works too
   SSP2STAT=$40
   
   ;led var latd.7
  latb.7=1
 
  ;led=1
  gosub tft_init

 Serout2 PORTb.7,84,["ready ",#latd, 13,10]
 glcdc  font7x8       ;SET FONT

is this OK?

[CODE];----GLOBAL----HW---------
SSP_IF VAR PIR3.7 'I don't understand what it mean

symbol tft_dc_bit = PORTB.5
symbol tft_cs_bit = PORTB.4
symbol tft_rst_bit = PORTB.7

tft_port var PORTB

SDi from display I connect to PORD.4 and SCK from display I connect to PORTD.0 on PIC processor

[visnja30]

hi Richard,

today arrived TFT display to me from eBay.

I can not wait to start playing with it

Do you can tell me if this is the correct way to connecting peripherals with a PIC processor (pic18f87J11)



TOUCH PANEL connection to PIC

TOUCH PANEL PIC
T_CS PORT F.2
T_DIN PORT F.3
T_DO PORT F.4
T_CLK PORT F.1
T_IRQ PORT F.5


TFT display connection to PIC

TFT DISPLAY PIC
DC PORT C.2
CS PORT C.1
RST PORT C.0
MOSI PORT C.5
SCK PORT C.3




FLASH MEMORY W25Q32 connection to PIC
FLASH W25Q32 PIC

CS PORT H.0
SO PORT D.5
SI PORT D.4
SCK PORT D.6




My TFT module have a XPT2046 touch controller is this the some controller on your board?
Model of my tft module is : TJTCM24028-SPI 2.8 TFT SPI 240X320 v1.1

[richard]

is the correct way to connecting peripherals with a PIC processor (pic18f87J11)

its not the only way but its the way my demo platform is connected

Model of my tft module is : TJTCM24028-SPI 2.8 TFT SPI 240X320 v1.1

my tft touch module is : TJTCM24024-SPI 2.8 TFT SPI 240X320 , I got no docs with it and have not been able to identify the controller. but it has XPT2046 stamped on the chip so it looks the same as yours

[ruijc]

I was looking on ebay and i could not find any 2.8" TJTCM24024.
The only TJTCM24024 i could find is a 2.4"

see here:
http://www.ebay.com/itm/2-4-240x320-...item20eaff07d1

Also the TJTCM24028:
http://www.ebay.com/itm/240x320-2-8-...item41998b289b


Maybe the 24028 means 2.8" and the 24024 means 2.4".

@Richard,
Can you double check you your display is really 2.4" or 2.8"?

Thanks

Regards
Rui

[richard]

its 2.4 TJTCM24024-SPI 2.4 TFT SPI 240X320
http://www.ebay.com.au/itm/181500077...%3AMEBIDX%3AIT

I should be more careful cutting and pasting

[ruijc]

Thanks Richard...

Pressing buy now...

Regards
Rui

[richard]

the 2.2 board before and after the flash chip added (w25q32bv)