2,8 tft seeed

automotive78 · August 3, 2012, 7:03am

help help

deray · August 7, 2012, 6:31am

Hello ,
Can this code be complied ? If so , you need to choose the right board and com port that you used .
Tools -> Board -> type of you board
Tools -> Serial port -> COM you used

Deray

automotive78 · August 16, 2012, 7:25pm

Hello , im from holland and i am new a pupil in microcontrollers
i have a qustions, i have seeed tft 2,8, this tft have a no sd card,
can I upload a photo with this for my logo,
And you have a idea to create a menu example if I “here” on busy that I go to the next screen ?
i have arduino mega

deray · August 23, 2012, 3:10am

Yes , you can upload a photo from SD card and showed by TFT Shield , there is library on our wiki ,you can refer to it .
TFT BMP demo sketch

What is the menu ?I don’t quite understand , it for TFT ?

Deray

sljkrr · November 15, 2012, 6:02pm

Edit: Fixed code for RD_LOW and RD_HIGH original code was correct.

I just purchased a 2.8 TFT from RS. I see that it is version 1.0.
I built an interface for an Arduino to a Shield for the Coridium LPC1114 BasicChip which I won.

I converted the TFT.CPP to ArmBasic for the Basic Chip. I was able to get the touch panel working, but have had no luck with the TFT. I examined the links goint to the shield with a logic analyzer and the signals look correct.

Could my problem be that the BasicChip is a 3.3V part?
Could U3 and U4 on the shield (3.3K resistors) be a problem by no letting the proper signal levels thru to to TFT?
When -RD is Active (low) I only see E7 or EF on the data bus.
Does the Touch Panel need 5v or will it work on 3.3? My levels seem low. I I need to connect 5V to the panel I will have to add some drivers and dividers. It seems to work OK for now.
Do I need to connect -RESET to the shield?

I have both 3.3V and 5V connected to the shield.

I am going up to RS this morning to get a UNO or Mega. I will try that with the original library.

Thanks
JohnK

Here is my ArmBasic code:

'******************************************************************************
’ Copyright © 2012 Universe Unlimited Microsystems
’
’ File: touchtft.bas
’
’ Summary: TFT on SeeedStudios (Radio Shack) 2.8" TFT Touch Shield V 1.0
’
’ derived from:
'SPFD5408A or ST7781R TFT Library.
’
'2011 Copyright © Seeed Technology Inc.
’
'Authors: Albert.Miao, Visweswara R (with initializtion code from TFT vendor)
’
'This library is free software; you can redistribute it and/or
'modify it under the terms of the GNU Lesser General Public
'License as published by the Free Software Foundation; either
'version 2.1 of the License, or (at your option) any later version.
’
'This library is distributed in the hope that it will be useful,
'but WITHOUT ANY WARRANTY; without even the implied warranty of
'MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
'Lesser General Public License for more details.
’
'You should have received a copy of the GNU Lesser General Public
'License along with this library; if not, write to the Free Software
'Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
’
’
’
’ Contents:
’
’ Notes:
’
’ Author: John E. Kabat Jr.
’
’ Last Edit: 11/15/2012 10:59:10 By: John E. Kabat Jr.
’
’ Revisions:
’
'******************************************************************************
#ifndef USE_TFT
#define USE_TFT

#include <LPC11xx.bas>

goto endofTFT

'Basic Colors
#define RED &Hf800
#define GREEN &H7e00
#define BLUE &H001f
#define BLACK &H0000
#define YELLOW &Hffe0
#define WHITE &Hffff

'Other Colors
#define CYAN &H07ff
#define BRIGHT_RED &Hf810
#define GRAY1 &H8410
#define GRAY2 &H4208

'TFT resolution 240*320
#define MIN_X 0
#define MIN_Y 0
#define MAX_X 239
#define MAX_Y 319

’ TFT Data Pins are P0(1) thru P0(8)
’ since P0 starts at P0(0) we need to shift left 1 bit

#define TFT_DATA_SHIFT 1
#define TFT_DATA_MASK &H01FE

’ TFT Control Pins are:
’ -CS = P1(9)
’ RS = P1(8)
’ -RD and -WR are on P0
’ -RD = P0(11)
’ -WR = P0(10)

#define CS_VAL P1(9)
#define CS_LOW CS_VAL=0
#define CS_HIGH CS_VAL=1

#define RS_VAL P1(8)
#define RS_LOW RS_VAL=0
#define RS_HIGH RS_VAL=1

#define RD_VAL P0(11)
#define RD_LOW RD_VAL=0
#define RD_HIGH RD_VAL=1

#define WR_VAL P0(10)
#define WR_LOW WR_VAL=0
#define WR_HIGH WR_VAL=1

SUB TFT_ALL_PIN_INPUT
GPIO0_DIR = GPIO0_DIR AND NOT(TFT_DATA_MASK)

’ Checking to see if Basic does anything when setting Input
DIR(1)=0
DIR(2)=0
DIR(3)=0
DIR(4)=0
DIR(5)=0
DIR(6)=0
DIR(7)=0
DIR(8)=0

END SUB

SUB TFT_ALL_PIN_OUTPUT
GPIO0_DIR = GPIO0_DIR OR TFT_DATA_MASK

’ Checking to see if Basic does anything when setting Output
DIR(1)=1
DIR(2)=1
DIR(3)=1
DIR(4)=1
DIR(5)=1
DIR(6)=1
DIR(7)=1
DIR(8)=1

END SUB

SUB TFT_ALL_PIN_LOW
GPIO0_DATA = GPIO0_DATA AND NOT(TFT_DATA_MASK)

’ just checking if Basic does something else when setting low
P0(1)=0
P0(2)=0
P0(3)=0
P0(4)=0
P0(5)=0
P0(6)=0
P0(7)=0
P0(8)=0

END SUB

SUB TFT_PUSHDATA(X AS INTEGER)
dim start as integer

TFT_ALL_PIN_LOW
GPIO0_DATA = GPIO0_DATA OR (X << TFT _DATA_SHIFT)
WR_LOW
START = TIMER
WHILE (TIMER-START < 10)  ' wait for 10 micro-seconds
LOOP 
WR_HIGH

END SUB

FUNCTION TFT_GETDATA AS INTEGER
dim x, start as integer

RD_LOW
START = TIMER
WHILE (TIMER-START < 10)  ' wait for 10 micro-seconds
LOOP 
RD_HIGH

x=GPIO0_DATA
x = x >> TFT_DATA_SHIFT
RETURN (x AND &H00FF)
END FUNCTION

SUB TFT_SENDCOMMAND( INDEX AS INTEGER)

PRINT "S Ccommand ";HEX(INDEX)
TFT_ALL_PIN_OUTPUT
CS_LOW

RS_LOW
RD_HIGH
WR_HIGH
         
TFT_PUSHDATA(0)
TFT_PUSHDATA(INDEX AND &HFF)

CS_HIGH
TFT_ALL_PIN_INPUT

END SUB

SUB TFT_SENDDATA(DAT AS INTEGER)

TFT_ALL_PIN_OUTPUT
CS_LOW
WR_HIGH
RS_HIGH
RD_HIGH

TFT_PUSHDATA((DAT AND &HFF00)>>8)
TFT_PUSHDATA(DAT AND &H00FF)

CS_HIGH
TFT_ALL_PIN_INPUT

END SUB

FUNCTION TFT_READREGISTER(INDEX AS INTEGER) AS INTEGER
DIM DAT AS INTEGER
dim start as integer

CS_LOW
RS_LOW
RD_HIGH

TFT_ALL_PIN_OUTPUT
TFT_PUSHDATA(0)
TFT_PUSHDATA(INDEX)

TFT_ALL_PIN_INPUT
TFT_ALL_PIN_LOW
RS_HIGH

DAT = TFT_GETDATA<<8
DAT = DAT OR TFT_GETDATA

CS_HIGH

’ TFT_ALL_PIN_OUTPUT

RETURN DAT

END FUNCTION

SUB TFT_INIT
DIM IC_CODE AS INTEGER
DIM I,F AS INTEGER

PRINT "TFT INIT"
DIR(10)=1
DIR(11)=1
DIR(40)=1
DIR(41)=1

CS_HIGH
RS_HIGH
RD_HIGH
WR_HIGH

TFT_ALL_PIN_OUTPUT
TFT_ALL_PIN_LOW

wait(500)

 IC_CODE = TFT_readRegister(&H0)
 print "IC CODE=";HEX(IC_CODE)


        IC_CODE = TFT_readRegister(&H0)
 print "IC CODE=";HEX(IC_CODE)


        IC_CODE = TFT_readRegister(&H0)
 print "IC CODE=";HEX(IC_CODE)

#if 0
if IC_CODE = &H5408 THEN
TFT_sendCommand(&H0000)
TFT_sendData(&H0001)
wait(100)

    TFT_sendCommand(&H0001)
    TFT_sendData(&H0000)
    TFT_sendCommand(&H0002)
    TFT_sendData(&H0700)
    TFT_sendCommand(&H0003)
    TFT_sendData(&H1030)
    TFT_sendCommand(&H0004)
    TFT_sendData(&H0000)
    TFT_sendCommand(&H0008)
    TFT_sendData(&H0207)
    TFT_sendCommand(&H0009)
    TFT_sendData(&H0000)
    TFT_sendCommand(&H000A)
    TFT_sendData(&H0000)
    TFT_sendCommand(&H000C)
    TFT_sendData(&H0000)
    TFT_sendCommand(&H000D)
    TFT_sendData(&H0000)
    TFT_sendCommand(&H000F)
    TFT_sendData(&H0000)
    'power on sequence VGHVGL
    TFT_sendCommand(&H0010)
    TFT_sendData(&H0000)
    TFT_sendCommand(&H0011)
    TFT_sendData(&H0007)
    TFT_sendCommand(&H0012)
    TFT_sendData(&H0000)
    TFT_sendCommand(&H0013)
    TFT_sendData(&H0000)
    'vgh
    TFT_sendCommand(&H0010)
    TFT_sendData(&H1290)
    TFT_sendCommand(&H0011)
    TFT_sendData(&H0227)
    wait(100)
    'vregiout
    TFT_sendCommand(&H0012)
    TFT_sendData(&H001d)               '&H001b
    wait(100)
    'vom amplitude
    TFT_sendCommand(&H0013)
    TFT_sendData(&H1500)
    wait(100)
    'vom H
    TFT_sendCommand(&H0029)
    TFT_sendData(&H0018)
    TFT_sendCommand(&H002B)
    TFT_sendData(&H000D)

    'gamma
    TFT_sendCommand(&H0030)
    TFT_sendData(&H0004)
    TFT_sendCommand(&H0031)
    TFT_sendData(&H0307)
    TFT_sendCommand(&H0032)
    TFT_sendData(&H0002)               ' 0006
    TFT_sendCommand(&H0035)
    TFT_sendData(&H0206)
    TFT_sendCommand(&H0036)
    TFT_sendData(&H0408)
    TFT_sendCommand(&H0037)
    TFT_sendData(&H0507)
    TFT_sendCommand(&H0038)
    TFT_sendData(&H0204)               '0200
    TFT_sendCommand(&H0039)
    TFT_sendData(&H0707)
    TFT_sendCommand(&H003C)
    TFT_sendData(&H0405)               ' 0504
    TFT_sendCommand(&H003D)
    TFT_sendData(&H0F02)
    'ram
    TFT_sendCommand(&H0050)
    TFT_sendData(&H0000)
    TFT_sendCommand(&H0051)
    TFT_sendData(&H00EF)
    TFT_sendCommand(&H0052)
    TFT_sendData(&H0000)
    TFT_sendCommand(&H0053)
    TFT_sendData(&H013F)
    TFT_sendCommand(&H0060)
    TFT_sendData(&HA700)
    TFT_sendCommand(&H0061)
    TFT_sendData(&H0001)
    TFT_sendCommand(&H006A)
    TFT_sendData(&H0000)
    '
    TFT_sendCommand(&H0080)
    TFT_sendData(&H0000)
    TFT_sendCommand(&H0081)
    TFT_sendData(&H0000)
    TFT_sendCommand(&H0082)
    TFT_sendData(&H0000)
    TFT_sendCommand(&H0083)
    TFT_sendData(&H0000)
    TFT_sendCommand(&H0084)
    TFT_sendData(&H0000)
    TFT_sendCommand(&H0085)
    TFT_sendData(&H0000)
    '
    TFT_sendCommand(&H0090)
    TFT_sendData(&H0010)
    TFT_sendCommand(&H0092)
    TFT_sendData(&H0600)
    TFT_sendCommand(&H0093)
    TFT_sendData(&H0003)
    TFT_sendCommand(&H0095)
    TFT_sendData(&H0110)
    TFT_sendCommand(&H0097)
    TFT_sendData(&H0000)
    TFT_sendCommand(&H0098)
    TFT_sendData(&H0000)
    TFT_sendCommand(&H0007)
    TFT_sendData(&H0133)

    TFT_sendCommand(&H0022)            'Start to write to display RAM

else
    TFT_sendCommand(&H0001)
    TFT_sendData(&H0100)
    TFT_sendCommand(&H0002)
    TFT_sendData(&H0700)
    TFT_sendCommand(&H0003)
    TFT_sendData(&H1030)
    TFT_sendCommand(&H0004)
    TFT_sendData(&H0000)
    TFT_sendCommand(&H0008)
    TFT_sendData(&H0302)

    TFT_sendCommand(&H000A)
    TFT_sendData(&H0000)
    TFT_sendCommand(&H000C)
    TFT_sendData(&H0000)
    TFT_sendCommand(&H000D)
    TFT_sendData(&H0000)
    TFT_sendCommand(&H000F)
    TFT_sendData(&H0000)

    wait(500)

    TFT_sendCommand(&H0030)
    TFT_sendData(&H0000)
    TFT_sendCommand(&H0031)
    TFT_sendData(&H0405)
    TFT_sendCommand(&H0032)
    TFT_sendData(&H0203)
    TFT_sendCommand(&H0035)
    TFT_sendData(&H0004)
    TFT_sendCommand(&H0036)
    TFT_sendData(&H0B07)
    TFT_sendCommand(&H0037)
    TFT_sendData(&H0000)
    TFT_sendCommand(&H0038)
    TFT_sendData(&H0405)
    TFT_sendCommand(&H0039)
    TFT_sendData(&H0203)
    TFT_sendCommand(&H003c)
    TFT_sendData(&H0004)
    TFT_sendCommand(&H003d)
    TFT_sendData(&H0B07)
    TFT_sendCommand(&H0020)
    TFT_sendData(&H0000)
    TFT_sendCommand(&H0021)
    TFT_sendData(&H0000)
    TFT_sendCommand(&H0050)
    TFT_sendData(&H0000)
    TFT_sendCommand(&H0051)
    TFT_sendData(&H00ef)
    TFT_sendCommand(&H0052)
    TFT_sendData(&H0000)
    TFT_sendCommand(&H0053)
    TFT_sendData(&H013f)

    wait(500)

    TFT_sendCommand(&H0060)
    TFT_sendData(&Ha700)
    TFT_sendCommand(&H0061)
    TFT_sendData(&H0001)
    TFT_sendCommand(&H0090)
    TFT_sendData(&H003A)
    TFT_sendCommand(&H0095)
    TFT_sendData(&H021E)
    TFT_sendCommand(&H0080)
    TFT_sendData(&H0000)
    TFT_sendCommand(&H0081)
    TFT_sendData(&H0000)
    TFT_sendCommand(&H0082)
    TFT_sendData(&H0000)
    TFT_sendCommand(&H0083)
    TFT_sendData(&H0000)
    TFT_sendCommand(&H0084)
    TFT_sendData(&H0000)
    TFT_sendCommand(&H0085)
    TFT_sendData(&H0000)
    TFT_sendCommand(&H00FF)
    TFT_sendData(&H0001)
    TFT_sendCommand(&H00B0)
    TFT_sendData(&H140D)
    TFT_sendCommand(&H00FF)
    TFT_sendData(&H0000)
    wait(500)
    TFT_sendCommand(&H0007)
    TFT_sendData(&H0133)
    wait(250)
    'exit standby
    TFT_sendCommand(&H0010)
    TFT_sendData(&H14E0)
    wait(500)
    TFT_sendCommand(&H0007)
    TFT_sendData(&H0133)
    TFT_sendCommand(&H0022)
endif

'paint screen black
print "BLACK"
for i=0  to 2 step 1
    for f=0 to 38400 step 1 
        print "i,f=";I,F
             TFT_sendData(BLACK)
    next f
next i

#endif
end sub
endofTFT:
TFT_INIT
#endif

sljkrr · November 15, 2012, 6:43pm

I added a delay (1 us) after CS. This is so they do not simultaneous transition.
Here is the logic analyzer output: