I now have two copies of basically identical code running in both MCUs. It was found that the two MCUs took different times to execute memset() of the same length.Observe the running time by adding an IO flip before and after memset(). buffer is a gl...

In cubeIDE's ioc, the original 16M external clock is configured to 25M. Burn the program and debug it. After the program finishes running SystemClock_Config(), debug automatically exits and the program can no longer be burned. Stlink has been unable ...