Most probably they are tri-stated. After all these options have been selected, save your configuration, exit the menuconfig tool, build a new kernel image:. My device tree configuration for touch is as following: Jul 10, 1: External pullup’s are connected on the I2C lines. Please verify this and try the display again.
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I suspect that all this issues could force FT5x06 to hang.
Linux/PROCESSOR-SDK-AM335X: FT5x06 capacitive touchscreen issue
We have three displays with the same behavior. Hi All, any ft5d06 Michael, We could set up 7″ sensivity and now it works with 4 mm glass cover.
What is wrong in device tree configuration device tree maintained above in this thread Please any one check and suggest solution for this issue. I think that FT processes its I2C interrupt too slow to update the I2C transmit register so we get the value that has been written in write stage of the transaction. However, for this case threshold is too close to sensor noise margin. I am not able linx understand why the I2C clock is not coming out of the processor.
You need to download the image file: You can find more information on building and customizing Device Tree in How to customize Debian 9.
Do you see any activity on them when you probe the interface? Driver recognizes both displays via I2C, handshakes, etc. Started by jmasamoto Board TFTs. Hi, Do pinux have external pullups on the I2C lines? Please verify ftx506 and try the display again. We tried 3 different 4. FocalTech chip in 4.
FT5X06 can’t work properly | NXP Community
For more info how to customize, build and upload Device Tree file, please visit How to customize Debian 9. July 17, Do you have another question?
I am not sure that how the reset control is take care. In reply to Yordan Kovachev:. Ask a related question Ask a new question. Page Discussion View source History.
We based the design on a reference board that had a touchscreen controller whose reset line operated the opposite of this one. And what do they think? Will the one ground pulse of ms to Linxu signal be enough?
When I couldn’t see the device on i2c at all, it was because we were holding down its reset line with a pull down resistor. I think you should also test this and add this information into display datasheet.
Jul 18, 5: We will of course keep your suggestion for the datasheets in mind for any future revisions.
CONFIG_TOUCHSCREEN_EDT_FT5X06: EDT FocalTech FT5x06 I2C Touchscreen support
I saw using the scope that we actually have reading delay not less then byte intervals but this doesn’t work. Probably we need something else?
Due to the holidays, responses may be delayed.