2021-12-23 07:20 AM
2021-12-23 07:50 AM
This board?
http://www.chinalctech.com/cpzx/STM32_Study_Board/356.html
That doesn't have an ST-Link programmer on it. You'll need to get one and connect it appropriately.
Genuine ST Nucleo board are relatively cheap and a lot more user friendly to work with.
2021-12-23 09:23 AM
Make sure you've connected up the SWD connection to the ST-LINK, along with power.
Make sure you can access the board using the STM32 Cube Programmer tool.
Pick a slower connect speed for CM0(+) devices, should work at a couple of MHz, but not 24 MHz
2021-12-23 09:38 PM
Yes i am giving separate power supply, i also "cannot able to access the board through program board".
Please explain third point in detail.
2021-12-23 09:51 PM
Yes, I am using separate ST-Link Programmer.
2021-12-24 07:37 AM
> Target voltage: 2.56V
Suggests the board doesn't have sufficient power, and/or isn't connected correctly. This board runs on 3.3V.