Tool/software:
Hello,
We have our software with the bootloader part and the application part. The TPS (NRES PIN) is connected to our MCU TMS570 (NPORRST PIN) and it move out from standby state every time we are power on (IGN pin connected to VBAT)
In bootloader mode we are keeping the TPS65381A in diagnostic mode to be able to flash new application and so on,....and so we do not enable the TPS watchdog and active state.
We wanted to activate the watchdog in application mode, and keep the possibility to move from application to bootloader (without triggering an MCU reset in between). Is it even possible ?
But we can see that the TPS watchdog cannot be disable in active state without going back to reset and then diagnostic, which means if we switch to bootloader, TPS will reset our MCU.
At this moment we assumed because of TPS reset we would lose the RAM data (flag, or other,...), that bootloader might have need to know why we enter the bootloader. (new flash of application request).
Do you know the best way to be able to keep the watchdog reset in application SW and then switch to bootloader ? if TPS and MCU reset is not possible to avoid, we want to keep the context that bootloader knows what to expect on the next reset.
Thank you !
Regards,
Marc