CC1352P：FT232R puts CC1352 into bootloader mode

You can refer to chapter 10 bootloader in CC13x2,CC26x2 SimpleLink™ Wireless MCU Technical Reference Manual.

Hello, thank you for your answer. As the documentation says, I know that entering the bootloader mode requires setting the Bootloader Backdoor DIO and reset IO low. I now want to lower these two IOs through FT232R to make CC1352 enter bootloader mode and then burn Firmware, I know how to configure FT232R, but sblAppEx cannot access FT232R.

Try to use Flash Programmer 2 or Uniflash to do mass erase to you CC1352P and test again.

The current scenario is only using UART programming, otherwise I will directly program through Flash Programmer 2

Is your CC1352P a brand new one which means you never program anything into it?

I know that the chip without firmware is in bootloader mode, but I need to flash the firmware at any time, which means that I can flash the firmware multiple times.

If you config CCFG correctly, it should be no pro to use serial bootloader everytime.

Sorry, I learned that CCFG can set whether to allow access to Flash content through the bootloader interface, but this does not solve the problem I am currently experiencing。

Maybe what I described is not very clear. I want to design a device similar to USB dongle. I need to use its uart when it works normally. When I need to upgrade the firmware, I don't need to manually control the IO port to make it enter BootLoader Mode, but the already configured FT232R chip is used to lower the boot IO and reset IO of the CC1352 through the programming tool, so as to program the firmware of the CC1352. This is a general NXP programming method, because this programming method is more convenient, and it has fewer changes to my hardware, so I want to use this method on TI, I hope I can get help.

As I had replied, if you make sure you configure CCFG correctly, you can use serial bootloader anytime.