Hello,
We are using a TMS570LS0332 MCU to implement a control system. Since the algorithm is proprietary, our customers should not have access to the firmware via the JTAG port. We will therefore use the AJSM to secure our device after programming.
Can you provide me with the tool used to unlock the JTAG access using the unlock by scan method? It will be required to perform firmware updates to secured devices in the field.
Also, the code can be written to OTP during programming (by constant definition and linker command file, as shown in ajsm.zip shared in post https://e2e.ti.com/support/microcontrollers/hercules/f/312/p/393114/1391640#1391640
or at runtime, by programming the OTP from running code. Which method is recommended?
Is it possible/recommended to first program the normal code, then secure the device by programming a small project which only writes the OTP code?
(As in, a program which does not touch the Flash memory, but only writes the key to OTP?)
Are there plans to integrate the AJSM into the CCS/UniFlash workflow, as was done for the C28xx MCUs?
Best regards,
Rob Jacobs
