NHD-10.1-1024600AF-LSXV#-CTP I2C devices

Shaun Cummins

• May 12, 2021 05:06

Dear Sir,
I'm designing the NHD-10.1-1024600AF-LSXV#-CTP Touchscreen into a product.
What is the I2C device address of the EDID within the display portion (there's no data about the interface)?
What is the I2C device address of the touchscreen portion (FocalTech FT5526EEZ possibly 0x70/0x71?).
Many thanks
Shaun Cummins

0

• 

  Ted M.

  NHD Staff

  • May 12, 2021 10:27

  Hi Shaun,
  
  Address A0 is the standard EEPROM I2C location for the EDID data.
  
  Here is some example code for the the touchscreen:

  i2c_start();
  i2c_tx(0x70); //Slave Address (Write)
  i2c_tx(0x00); //Start reading address
  i2c_stop();
  i2c_start();
  i2c_tx(0x71); //Slave Address (Read)
  for(i=0x00;i<0x1F;i++)
  {touchdata_buffer = i2c_rx(1);}
  i2c_stop();

  Regards,

  0

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