Posted on February 09, 2017 at 14:47I'm using examples of project 'UART_Printf'.
But I can't use printf.
I set uart1. and I checked that uart1 tx/rx works.
I added below code to my source.
&sharpinclude 'stdio.h'
&sharpifdef __GNUC__
/* With GCC/RAISONANCE, small printf (option LD Linker->Libraries->Small printf
set to 'Yes') calls __io_putchar() */
&sharpdefine PUTCHAR_PROTOTYPE int __io_putchar(int ch)
&sharpelse
&sharpdefine PUTCHAR_PROTOTYPE int fputc(int ch, FILE *f)
&sharpendif /* __GNUC__ */
PUTCHAR_PROTOTYPE
{
/* Place your implementation of fputc here */
/* e.g. write a character to the USART1 and Loop until the end of transmission */
HAL_UART_Transmit(&huart1, (uint8_t *)&ch, 1, 0xFFFF);
return ch;
}
#uart #printf #stm32f4
