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Access AT24C EEPROM via I2C

About this Article


In this tutorial, an approach for accessing AT24C EEPROM via I2C bus on Cubieboard1 or Cubieboard2 is presented.


In order to access peripheral I2C devices, Cubieboard's script.bin should enable I2C interfaces. Edit script.fex, make certain that the following lines exist there.

twi1_used = 1
twi1_scl = port:PB18<2><default><default><default>
twi1_sda = port:PB19<2><default><default><default>

This will configure Cubieboard's IO port PB18 & PB19 to TWI1-SCK & TWI1-SDA (I2C-1).


AT24C Access

Example Codes

tutorials/cb1/development/access_at24c_eeprom_via_i2c.1386033644.txt.gz · Last modified: 2013/12/23 14:50 (external edit)