Eeprom - ICP DAS USA LP-22 Series User Manual

6.4. EEPROM

To Enable EEPROM working status, there are four steps to this process, which are described
below.
(1) Startup EEPROM GPIO function.
# echo 64 > /sys/class/gpio/export
(2) The EEPROM is write protected by default, the user needs to modify default value of EEPROM.
# echo out > /sys/class/gpio/gpio64/direction
(3) Change to writable of EEPROM.
# echo 0 > /sys/class/gpio/gpio64/value
(4) To write a data to EEPROM.
# echo hello > /sys/bus/i2c/devices/1-0050/eeprom
More detailed information, please refer to the demo code:
C:\cygwin\LinPAC_am335x_SDK\examples\common\eeprom.c
root@LinuxPC-ICPDAS:/icpdas/linpac_am335x_sdk/i8k/examples/common/eeprom.c
AM335X-PAC Series User Manual
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