Failure to program flash sector when using JLink

I have a problem that sometimes happen (now twice a week apart) where the entire executable image programs except for one sector that just happens to be where main() is. In this case it's sector 0x0800d900...
Failure to program flash sector when using JLink

I have a problem that sometimes happen (now twice a week apart) where the entire executable image programs except for one sector that just happens to be where main() is. In this case it's sector 0x0800d900...
UDP CRC check in keil?

In UDP mode of keil network stack, when we use BSD API, is there any crc check in UDP packets send/receive? if yes, in STM32F4 series, use hardware crc block or software ?
UDP CRC check in keil?

In UDP mode of keil network stack, when we use BSD API, is there any crc check in UDP packets send/receive? if yes, in STM32F4 series, use hardware crc block or software ?
Dallas Ibutton CRC check in C or C

Does anyone have developed the code to check the CRC of an ibutton connected via one-wire to a quadi-directional port ? I'm studing how to develop it, there's someone who want speak about ?