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I have posted this sample code as one of the protection control example using the Firmware API.
You can confirm the followings using this sample code :
1, You can easily enable/disable D-Flash read/write protection parmanently by key=0 and key=1 commands.
2, You can confirm temporary protection/un-protection usage by key=2 and key=3 commands.
3, You can check that you can’t write D-Flash data while D-Flash R/W protection is enabled using #4 and #5 commands.
4, You can show the current protection status by key=7 command.
Confirmed evaluation boards :
1) TLE984x Evalboard
2) TLE9844-2QX Application Kit
[Usage of this software]
1, Program this software into the TLE984x of the evaluation board
2, Connect your PC and an evaluation board by USB cable
3, Lunch a terminal software and set 115200bps
4, Push RESET-SW of your evaluation board, then terminal software shows the following menu. Please follow the menu.
If you want to try Mass-erase function using a wrong password, please comment out line 85 of main.c of the below.
Line 85 //#define MASS_ERASE_ENABLE;
Caution : If you perform the mass-erase (Key=b) function, you need uIO Stick for full recovery.
// You can confirm that your TLE984x will be protected and can’t connect with your debugger like a uVISION.
step 01 Press Key= 7 : Show protect status. (unlock status)
step 02 Press Key= 0 : Set permanent D-Flash read and write protection.
step 03 --- push RESET-switch on your evaluation board. ---
step 04 Press Key= 7 : Show protect status. (lock status)
// You can confirm that R/W protected D-Flash can’t write by FW-API.
step 05 Press Key= 8 : Show D-Flash memory data.
step 06 Press Key= 4 : Write D-Flash, but you can’t. (data pattern 0x30,0x31,0x32,0x33... )
step 07 Press Key= 8 : Show D-Flash memory data.
// You can write to the protected D-Flash memory with pre-temporary clear protection (unlock status).
step 08 Press Key= 3 : Clear D-Flash read and write protection temporary.
step 09 Press Key= 7 : Show protect status. (unlock)
step 10 Press Key= 4 : Write D-Flash. (data pattern 0x30,0x31,0x32,0x33... )
// You can confirm the temporary unlock status will be canceled by RESET.
step 11 --- push RESET-switch on your evaluation board. ---
step 12 Press Key= 7 : Show protect status. (lock status)
// You can clear permanent D-Flash read and write protection after RESET. And you can write D-Flash.
step 13 Press Key= 1 : Clear D-Flash read and write protection permanently.
step 14 --- push RESET-switch on your evaluation board. ---
step 15 Press Key= 7 : Show protect status. (unlock status)
step 16 Press Key= 5 : Write D-Flash. (data pattern 0x00,0x01,0x02,0x03... )
For step 13, Key=9 or Key=a can be used inserted of Key=1. The result is the same.
- Firmware API