Touch Lib not working with 2.4" R61505 /ILI9320 TFT

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Touch Lib not working with 2.4" R61505 /ILI9320 TFT

Post by Ravi_kanchan2004 » Mon Sep 25, 2017 10:31 am

Hi Team,

Need your help to manage the Touch Screen using touch Lib.. I am using the STM32F103C8T6 board and also I have 2.4" LCD Module. One is R61505 and another is ILI9320. both are working perfectly with MCUFriend_kbv (no issue with display).Touch screen is working partially with this (I am using Touch-Screen-Library_STM for STM32 ).
As available on path: ... ibrary_STM, share by Roger Clark.

The Library is working partially. I am facing problem when I am touching on lower x or y point (like 10, 10 0r 0, 0) the point is drawing on approximate same location. But when I am moving on forward direction the drawing point location is decreasing in the same ratio of x or y co-ordinates (For example if I am touching on (50, 10), then point is drawing on (40, 9), or touching on (100, 10) then drawing on (80, 9) approx.).So Requesting you please advice me how to I can handle this problem.

Thanks in advance.

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Re: Touch Lib not working with 2.4" R61505 /ILI9320 TFT

Post by RogerClark » Tue Sep 26, 2017 9:46 pm

I am not familiar with that library, but normally some degree of calibration is needed for these sort of touch sensors.

Check if this library has a built in way to assign calibration values, and if not, you would need to handle the calibration in your own code. e.g. offset and scale.

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