BRT Community

Hi ,

I tried to check the CTP (INT line) it is not giving a low pulse when I touch the screen .
I am using the compatibility mode only which is by default , I did not make any changes.
Yes the screen is part of full module EVE 4 . Its not separate.

Can you please help me resolve this

Thanks in advance.

The touch controller used is ILI2132A , I am unable to see any data on SCL , SDA lines.

It would be helpful if u can provide screenshot of I2C lines or if there are any init sequence for using I2C

Doubt :

Should data be tapped directly from respective pins or is there any other configurations to be done.





Thanks in advance.

Hi Rudolph ,

Thanks for your reply ,

I tried with your comments but still the calibration is not happening , Is there any other way to check the touch in display , could you please help me if there are other options other than USB2SPI module usuage.


Thanks in advance

Hi Rudolph ,

Thanks for your help . I want to calibrate the touch points , I am sending the CMD_CALIBRATE  command , I am able to see the blue dot appearing but if I touch that its not moving ie., its not calibrating the points . What is the mistake Could you please help me in that . The calibration point is rigid its not moving even though I touch no movement , its appearing in top left corner of display. Can u please help me in this.

I have sent the prerecorded values of REG_TOUCH_TRANSFORM (A to F)

CLEAR(1, 1, 1)
CMD_DLSTART
CLEAR_COLOR_RGB(0,0,0)
CMD_TEXT(256, 171, 30, 0, "calibration - please tap the dot")
CMD_CALIBRATE(0)
DISPLAY()
CMD_SWAP()

Thanks in advance.

Hi,

Can anyone help me with respect to interrupts should I configure the interrupt for touch , If not how to identify touch , I tried configuring the registers ie., REG_INT_EN , REG_INT_MASK and reading the interrupt source , should this be configured , Kindly let me know how to identify the interrrupt of touch or how to understand there is touch happened without interrupt.

Hi, I tried with the display list that you have sent
   Raw   Text
0   0x12000064   CLEAR_TAG(100)
1   0x02000000   CLEAR_COLOR_RGB(0, 0, 0)
2   0x26000007   CLEAR(1, 1, 1)
3   0x14000001   TAG_MASK(1)
4   0x1f000002   BEGIN(POINTS)
5   0x0d0000c8   POINT_SIZE(200)
6   0x0300000a   TAG(10)
7   0x43200640   VERTEX2F(1600, 1600)
8   0x0300000b   TAG(11)
9   0x46400640   VERTEX2F(3200, 1600)
10   0x0300000c   TAG(12)
11   0x49600640   VERTEX2F(4800, 1600)
12   0x0300000d   TAG(13)
13   0x4c800640   VERTEX2F(6400, 1600)
14   0x21000000   END()
15   0x14000001   TAG_MASK(1)
16   0x1f000001   BEGIN(BITMAPS)
17   0x8c8c8fd4   VERTEX2II(100, 200, 31, 'T')
18   0x8fcc8fe8   VERTEX2II(126, 200, 31, 'h')
19   0x92cc8fe5   VERTEX2II(150, 200, 31, 'e')
20   0x958c8fa0   VERTEX2II(172, 200, 31, ' ')
21   0x96cc8fd4   VERTEX2II(182, 200, 31, 'T')
22   0x9a0c8fe1   VERTEX2II(208, 200, 31, 'a')
23   0x9cec8fe7   VERTEX2II(231, 200, 31, 'g')
24   0x9fec8fa0   VERTEX2II(255, 200, 31, ' ')
25   0xa12c8fe9   VERTEX2II(265, 200, 31, 'i')
26   0xa26c8ff3   VERTEX2II(275, 200, 31, 's')
27   0xa52c8fa0   VERTEX2II(297, 200, 31, ' ')
28   0xa66c8fae   VERTEX2II(307, 200, 31, '.')
29   0xa7cc8fae   VERTEX2II(318, 200, 31, '.')
30   0x1f000001   BEGIN(BITMAPS)
31   0x8c8fafb0   VERTEX2II(100, 250, 31, '0')
32   0x00000000   DISPLAY()
33   0x00000000   DISPLAY()
34   0x8c8fafb0   VERTEX2II(100, 250, 31, '0')
35   0x00000000   DISPLAY()

This is the Display list from EVE editor but If I touch the corresponding tag is not getting displayed by the number command. Kindly let me know if there are any mistakes.

Kindly help me in this .
I can see the tag value changing in REG_TOUCH_TAG but not by the number command.


Thanks in advance.

CLEAR(1, 1, 1)
POINT_SIZE(200)
TAG(0)
BEGIN(POINTS)
VERTEX2F(2000, 2000)
TAG(10)
VERTEX2F(3000, 2000)
TAG(11)
VERTEX2F(4000, 2000)
TAG(12)
VERTEX2F(5000, 2000)
END()
CMD_TEXT(298, 164, 28, 0, "Text")
TAG(0)
CMD_TEXT(199, 53, 28, 0, "Text")
END()
DISPLAY()
I Have a screen with 4 points with a tag value for each
after this if i touch the display I dont see any data in REG_TOUCH_TAG updated . This is where am stuck. Is there any mistake


Kindy help me in this ..
Thanks in advance..

CTOUCH_MODE - 3
TOUCH_RZTHRESH - 1200 (To eliminate false touches)
TOUCH_CONFIG - 0x0380 (I2C address)
REG_TOUCH_TRANSFORM ( A to F) with the prerecorded values.

CLEAR(1, 1, 1)
POINT_SIZE(200)
TAG(0)
BEGIN(POINTS)
VERTEX2F(2000, 2000)
TAG(10)
VERTEX2F(3000, 2000)
TAG(11)
VERTEX2F(4000, 2000)
TAG(12)
VERTEX2F(5000, 2000)
END()
CMD_TEXT(298, 164, 28, 0, "Text")
TAG(0)
CMD_TEXT(199, 53, 28, 0, "Text")

Along with end and display commands in the end , How to identify if touch is occurred and Can u please provide me more information on Interrupt related to touch detection. I tried reading REG_TOUCH_RAW_XY the response is FF . I am unable to detect touch.

Kindly help me in this.

Thanks in advance

Hi , Thanks for your reply.


I am currently using Riverdi BT817Q capacitive touch.

Commands Sent

Write operations to that particular registers to detect touch interrupt:
CTOUCH_MODE - 3
TOUCH_RZTHRESH - 1200 (To eliminate false touches)
TOUCH_CONFIG - 0x0380 (I2C address)
REG_TOUCH_TRANSFORM ( A to F) with the prerecorded values.

I have connected INT_N pin from BT817 to FRDM Controller, I have configured a GPIO pin in FRDM controller as an Interrupt pin to detect touch interrupt .
I have set the mask value in REG_INT_MASK value to 0x06 since i need touch and tag interrupt source activation for now. I have also enabled the REG_INT_EN
I have a doubt like in REG_INT_MASK I can set bit7 - bit 0 (8bits) for interrupt source ie., enabling the interuppt source but the Interrupt flag assignment is 9 bits.

Kindly help me in getting or detecting the touch interrupt or How to find out if touch has occured. Also how to determine whether the display is Focalteck / goodix touch IC based.
Thanks in advance..

Hi Rudolph thanks for your reply , I am able to tag values

Problem I am facing right now is I am not able to read the tag value its 0 everytime . I have calibrated the screen also like I used calibrate command read values from EVE editor and I used that for writing the registers ( REG_TOUCH_TRANSFORM_A till F) for startup.


Could you please help me in this.
Thanks in advance.

Hi Rudolph , thanks for your reply

I am not sure how to tag the graphical objects in EVE screen editor , could you please help me in that ? also is there any sequence for TOUCH registers to be configured and with what values since I am not clear on calibration part ,
Is that like I should use CMD_CALIBRATE command first and read the REG_TOUCH_TAG and calibration registers , I am using a capacitive touch .

Thanks in advance.

Hi Rudolph,

Thanks for your reply , Can you please help me in Touch related function like since I am new to touch related activities in this display , I am quite confused . Can u please provide me the sequence of the commands to be sent . I tried reading Touch Tag Register ( REG_TOUCH_TAG) and Co-ordinates of that particular register (REG_TOUCH_TAG_XY) , I am getting wrong co-ordinate values . It would be helpful if u can help me in this .
It would be more helpful if I can get any examples to understand.

Once I  assign each graphical object with tag value , they are getting assigned as 0 , TAG(0) in EVE editor is that right?
For example - I have 3 objects if i assign them with tag value it is all 0 through EVE editor tool TAG(0).

I am using Riverdi (RVT70HSBNWC00-B) - BT817


Thanks in advance.

Hi,


It is in PNG format, It is the raw data (.rawh file from EVE Screen Editor) . I am using a 7.0" Inch  RVT70HSBNWC00-B display.




Thanks in advance.

Hi Rudolph thanks for your reply,

I am uploading an ARGB1555 format image , The image is getting uploaded but it looks empty without colours like its completely blank with correct resolution and x and y cordinates , can u please help me with where is the mistake. What I should correct .


Thanks in advance.

Hi Rudolph , thanks for your reply

Currently I am trying to load an raw array of an PNG format image , can u please provide me steps to be followed , should I use CMD_LOADIMAGE command , I am bit confused in sending the commands , Could you please provide me the sequence of commands that has to be sent. I am not using flash to load an image will that be okay.


Thanks in advance.