STM32G0 redirect printf() to _write() and use UART - How to? Hi,I know the question has been asked before, and there is some information (to some extent) on the internet, though I cannot seem to make it happen. My question is:How can I use print() for debugging purpose? I have an UART peripheral up and running fine. I have a syscalls.c file that has a _write() function defined:__attribute__((weak)) int _write(int file, char *ptr, int len)
{
int DataIdx;
for (DataIdx = 0; DataIdx < len; DataIdx++)
{
__io_putchar(*ptr++);
}
return len;
}So to my understanding, I should have the UART transmit implementation inside my _write function. So the modified _write function would look like this:__attribute__((weak)) int _write(int file, char *ptr, int len)
{
int DataIdx;
for (DataIdx = 0; DataIdx < len; DataIdx++)
{
// __io_putchar(*ptr++);
while (!LL_USART_IsActiveFlag_TXE(USART2)) {}
LL_USART_TransmitData8(USART2, ptr[DataIdx]);
}
return len;
}So when using printf("Hello, world");somewhere in my code, I would expect my
