If the stmTX and RX pins of stm32 are broken, will stm32 still work?

dys433

If the stmTX and RX pins of stm32 are broken, will stm32 still work? [Copy link]

Can breaking the TX and RX pins of stm32 increase the difficulty of cracking the program? ? I really want to encrypt the program. Can you give me some guidance? Thank you!

Jacktang

The TX and RX pins are just the transceiver of the communication port.

For external communication

annysky2012

It can work normally even if it is broken, because the internal firmware and basic hardware are not damaged.

jiminhe

Breaking the TX and RX pins of stm32 will not affect the cracking. The cracking is to extract the program from the kernel. Damaging the two IOs has no meaning for program protection.

wangerxian

It should be to disconnect SWCLK and SWDIO. It won't have much impact on those who want to extract the program. It is better to encrypt the program. There are many encryption methods, you can do some research.

tagetage

Damaging two IOs does not make any difference to program protection.

lengxueaoshuang

The chip as a whole can work, only the serial port cannot be used

wsmysyn

If you don't need to communicate with other external UART interfaces, breaking it will not affect the program's own functions.

But it has no effect on anti-cracking

Many cracking methods are to directly decap the chip to retain the internal wiring, and then use a probe to directly operate and read the program.

freebsder

The external pins are not used, the package is peeled off and the internal wires are bonded.

dys433

Thank you for your guidance, is there any good way to encrypt? ? Thank you again!