I briefly changed the option byte setting through CUBE ProgrammmerIt was changed well before, but I tried to change the DMEP setting and return it because I couldn't want it, but an error occurred and it is not changing The error appears as follows, ...

 I was making a project with CUBE IDE and compiling it on the board, and I got this error while compiling the project I was doing on the new board.No source is available for "Call Signal Handler"() in 0xfffffffe.I'm sure they're using the same CPUI c...

case 1time_t Timestamp;Timestamp = gettime();uint8_t *data_ptr = &body_q[1];for (int i = 1; i <= 4; i++) {body_q[i] = (Timestamp >> (8 * (4 - i))) & 0xFF;}            break;        case 2:         memset(time_check, 0x0, sizeof(time_check));         ...

I deleted the contents because I set the wrong writing label I'm sorryI can't find a place to write

We implemented a lwip tcp server with STM32 and even sent and received messagesBut when I was debugging, it was good I'm trying to disconnect ST-LINK and see if it works by turning the power on and off without debugging, but the server didn't even cr...