flexnvm_eeprom#
Overview#
The flexnvm_eeprom example shows how to use flash driver to operate eeprom:
Running the demo#
When the example runs successfully, you can see the similar information from the terminal as below.
For parts with FlexNVM:
FlexNVM EEprom Example Start
Flash is UNSECURE!
EEprom Information:
EEprom Base Address: (0xxx)
EEprom Total Size: xx B
Make FlexRAM available for EEPROM
Now EEPROM data is read and written by accessing the FlexRAM address space
FlexRAM Base Address: (0xxx)
Read 16 bytes data from start of EEPROM space
The first 16 bytes data in EEPROM are not all 0x00s
Program the first 16 bytes memory space of EEprom as 0x00s
Successfully Programmed Location xx -> xx
Perform a system reset
FlexNVM EEprom Example Start
Flash is UNSECURE!
EEprom Information:
EEprom Base Address: (0xxx)
EEprom Total Size: xx B
Make FlexRAM available for EEPROM
Now EEPROM data is read and written by accessing the FlexRAM address space
FlexRAM Base Address: (0xxx)
Read 16 bytes data from start of EEPROM space
The first 16 bytes data in EEPROM are all 0x00s
Program a buffer(16 bytes) into the first 16 bytes memory space of EEprom
Successfully Programmed Location xx -> xx
Perform a system reset
FlexNVM EEprom Example Start
Flash is UNSECURE!
EEprom Information:
EEprom Base Address: (0xxx)
EEprom Total Size: xx B
Make FlexRAM available for EEPROM
Now EEPROM data is read and written by accessing the FlexRAM address space
FlexRAM Base Address: (0xxx)
Read 16 bytes data from start of EEPROM space
The first 16 bytes data in EEPROM are what we have progrommed before
Recover the first 16 bytes memory space of EEprom as 0xFFs
End of FlexNVM EEprom example
For Some parts Without FlexNVM (such as K65FN):
FlexNVM EEprom example Start
Current device doesn't support FlexNVM feature
End of FlexNVM EEprom example
Supported Boards#
FRDM-KE15Z
Hardware requirements
Micro USB cable
FRDM-KE15Z board
Personal Computer
Board settings
No special settings are required.
Prepare the Demo
Connect a USB cable between the PC host and the OpenSDA USB port on the board.
Open a serial terminal with these settings:
115200 baud rate
8 data bits
No parity
One stop bit
No flow control
Download the program to the target board.
Either press the reset button on your board or launch the debugger in your IDE to begin running the example.
Running the demo
When the example runs successfully, the following message is displayed in the terminal
FlexNVM EEprom Example Start
Flash is UNSECURE!
There is no available EEprom (FlexNVM) on this Device by default.
Example is trying to configure FlexNVM block as EEprom.
Perform a system reset
FlexNVM EEprom Example Start
Flash is UNSECURE!
EEprom Information:
EEprom Base Address: 262144 KB, Hex: (0x10000000)
EEprom Total Size: 1 KB, Hex: (0x400)
Program a buffer to a sector of EEprom
Successfully Programmed Location 0x14000000 -> 0x14000010
End of FlexNVM EEprom Example
FRDM-MCXE247
Hardware requirements
Micro USB cable
FRDM-MCXE247 board
Personal Computer
Board settings
No special settings are required.
Prepare the Demo
Connect a USB cable between the PC host and the OpenSDA USB port on the board.
Open a serial terminal with these settings:
115200 baud rate
8 data bits
No parity
One stop bit
No flow control
Download the program to the target board.
Either press the reset button on your board or launch the debugger in your IDE to begin running the example.
NOTE - EEPROM Quick Write feature can be enabled with CONFIG_IFLASH_EEPROM_QUICK_WRITE option.
Running the demo
When the example runs successfully, the following message is displayed in the terminal
FlexNVM EEprom Example Start
Flash is UNSECURE!
There is no available EEprom (FlexNVM) on this Device by default.
Example is trying to configure FlexNVM block as EEprom.
Perform a system reset
FlexNVM EEprom Example Start
Flash is UNSECURE!
EEprom Information:
EEprom Base Address: 262144 KB, Hex: (0x10000000)
EEprom Total Size: 1 KB, Hex: (0x400)
Program a buffer to a sector of EEprom
Successfully Programmed Location 0x14000000 -> 0x14000010
End of FlexNVM EEprom Example