FT5426 Not respond MCU

[N Sornakumar]

I am working with stm32f7-custom board using 8inch touch screen(microe3902) & FT5426 capacitive touch controller

FT5426 not respond properly

[Tesla DeLorean]

That's unfortunate.

You'll likely need to break out the debugger, along with a scope or logic analyzer, and review behaviour vs that in the datasheet/manual.​

[N Sornakumar]

yes it was the i2c timing register issue:

My previous configuration;

#define DISCOVERY_I2Cx_TIMING                      ((uint32_t)0x40912732)  

i2c_handler->Init.Timing           = DISCOVERY_I2Cx_TIMING;

after changes this value:

#define DISCOVERY_I2Cx_TIMING                      ((uint32_t)0x00200922)  

i2c_handler->Init.Timing           = DISCOVERY_I2Cx_TIMING;

touch was one time sensed, how to find this value ??