stm32l4r5zit6 VS stm32l4r5zit6p Uart conflict Hello good Morning,We have tried to make some cards, but our manufacturer has made a mistake and has mounted the stm32l4r5zit6p instead of stm32l4r5zit6.It seems that we are able to correctly program the uC through the REALICE tool (using st-link for connect, erase, read, program internal memory), but the uC has strange behaviors, for example: The uart3, which we have configured on pins PC_12 and PD_2, does not work correctly.We have tried a very simple program code (shown below) using an old board with the stm32l4r5zit6, and also with new one, stm32l4r5zit6p. #include "mbed.h"
#define MAX_LOG_SIZE 2048
UnbufferedSerial USB (PC_12, PD_2, 115200); //TX, RX
char buf_log[MAX_LOG_SIZE] = {0};
uint32_t num_log;
int main(void){
while (1)
{
ThisThread::sleep_for(2s);
num_log = sprintf(buf_log, "\n\r--- START TEST PROGRAM\n\r");
USB.write(buf_log, num_log);
}
}When we power the old one, it send information through the uart pins, putting the RX and TX s
