After installing the program with ST-LINK, when I turn off the power and return it, the last program I installed does not work.

[ZKURT.1]

Hi. I am using stm32L010C6Tx. After installing the program with ST-LINK, when I turn off the power and return it, the last program I installed does not work. I need to reload the code. I wondered if it wasn't writing to your Flash, but it looks full in cubeprogrammer. The NRST lead is connected to GND with a 100 nF capacitor. Boot0 end is idle. Any ideas as to why it might be?

[Paul1]

Try:

1. Disconnect STLink (STLink might be holding board in reset, there are options in the IDE and PRG software for STLink Reset/Program modes)
2. Any Bootloader Required? You can debug code without the bootloader, but to run standalone will need Bootloader+App.
3. Reset & programming circuit on PCB? Proper pulldowns/pullups/caps? Show your circuit/schematic.

Paul

[ZKURT.1]

Hello, the solution is to connect boot0 to GND with a resistor.

[Peter BENSCH]

To be precise: BOOT0 must read logical 0, which can be achieved:

• either with a pull-down resistor (so that a 1 can later also be applied), or
• with permanent connection to GND

Regards

/Peter

[MM..1]

Boot0 end is idle ??? Connect it to GND over 1k

[ZKURT.1]

Thank you for your help. Thanks to you, the program worked. This is the solution..