RT thread uses RT kprintf

One . brief introduction

be based on stm32 Hardware , Use rt-kprintf function .rtt It uses nano edition .
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Two . Use

In this function , Finally, the output information is through the call rt_hw_console_output Functional


And this function is a weak Empty function of type , You can add the output code directly here , Take the most common serial port as an example , Add the following code ok 了 .

 /* empty console output */
	rt_enter_critical();
	while(*str != '\0')
	{
    
		HAL_UART_Transmit(&UART1_Handler,(uint8_t *)(str++),1,1000);
	}
	rt_exit_critical();

If you want to see the output RT Version information for , There is one thing to note , That's initialization usart The position of cannot be placed in main Function , Have to move .

Move to this position , It outputs version information first , Then we can get to main Execute in function , This is the time ,usart It's not initialized yet , So there will be no information output .Cache_Enable The function is stm32H7 Some of the types .