1. Prepare materials
1. CH579M or CH579F evaluation board
2、MDK5
3. Loat example of Nanjing Qinheng official website (http://www.wch.cn/)

2. Open the project file
1. Add RT-Thread plug-in package

Click the installation, wait for the installation to complete the preservation exit
2. Import RT-Thread

3. Files to change rtconfig.h according to demand

Third, the most important thing is the board.c file modification

/ * Development board hardware -related header file */
#include "board.h" 

/ * RT-Thread related header file */
#include <rthw.h>
#include <rtthread.h>


#if defined(RT_USING_USER_MAIN) && defined(RT_USING_HEAP)
#define RT_HEAP_SIZE 1024

#define CH579M_SRAM1_START              (0x20000000)      
#define CH579M_SRAM1_END                (CH579M_SRAM1_START + 32 * 1024)   // End address = 0x20000000 (base address) + 32K (RAM size)

#if defined(__CC_ARM) || defined(__CLANG_ARM)
extern int Image$$RW_IRAM1$$ZI$$Limit;                   // RW_iram1, it needs to be corresponding to the domain name when running in the link script
#define HEAP_BEGIN      ((void *)&Image$$RW_IRAM1$$ZI$$Limit)
#endif

#define HEAP_END                       CH579M_SRAM1_END


/ * Allocate a part of the static memory from the internal SRAM as the pile space of the RTT. The configuration here is 4KB */
//static uint32_t rt_heap[RT_HEAP_SIZE];
RT_WEAK void *rt_heap_begin_get(void)
{
    //return rt_heap;
	return HEAP_BEGIN;
}

RT_WEAK void *rt_heap_end_get(void)
{
    //return rt_heap + RT_HEAP_SIZE;
	return (rt_uint32_t*)HEAP_END;
}
#endif


/**
     * @Brief development board hardware initialization function
     * @param None
     * @Retval none
  *
  * @attention
     * RTT puts the development board -related initialization function into the BOARD.C file.
     * Of course, it is also possible to put these functions on the main.c file.
  */
void rt_hw_board_init()
{
	
    / * Initialization Systick */
    SysTick_Config( FREQ_SYS / RT_TICK_PER_SECOND );	
    
	/ * Hardware BSP initialization of natively placed here, such as LED, serial port, LCD, etc. */
   
    
    / * Initialize the serial port of the development board */
	/ * Configure serial port 1: First configure the IO port mode, then configure the serial port */   
    
	
	
	GPIOB_SetBits(GPIO_Pin_23);
    GPIOB_ModeCfg( GPIO_Pin_23, GPIO_ModeOut_PP_5mA );
	GPIOB_ModeCfg( GPIO_Pin_22, GPIO_ModeOut_PP_5mA );
    GPIOB_SetBits(GPIO_Pin_22);
	
/ * Call the component initialization function (use init_board_export ()) */
#ifdef RT_USING_COMPONENTS_INIT
    rt_components_board_init();
#endif
    
#if defined(RT_USING_CONSOLE) && defined(RT_USING_DEVICE)
	rt_console_set_device(RT_CONSOLE_DEVICE_NAME);
#endif
    
#if defined(RT_USING_USER_MAIN) && defined(RT_USING_HEAP)
    rt_system_heap_init(rt_heap_begin_get(), rt_heap_end_get());
#endif


    GPIOA_SetBits(GPIO_Pin_9);
    GPIOA_ModeCfg(GPIO_Pin_8, GPIO_ModeIN_PU);			// rxd-configuration upper pull input
    GPIOA_ModeCfg(GPIO_Pin_9, GPIO_ModeOut_PP_5mA);		// TXD-Configure push-pull output, pay attention to let the IO port output high level
    
	UART1_DefInit();
}

/**
     * @Brief Systick interrupt service function
     * @param None
     * @Retval none
  *
  * @attention
     * SYSTICK interrupt service function is also defined in the firmware library file STM32F10X_IT.C, and now
     * Definition again in board.c, then repeated definition errors will occur when compiling, solving
     * Method is to make comments or delete in stm32f10x_it.c.
  */
void SysTick_Handler(void)
{
    / * Enter the interrupt */
    rt_interrupt_enter();

    / * Update time base */
    rt_tick_increase();

    / * Leave the interrupt */
    rt_interrupt_leave();
}



/**
     * @Brief reproduced serial port debug_usartx to RT_KPRINTF () function
     * Note: Debug_usartx is a macro defined in bsp_usart.h, using serial port 1 by default
     * @param Str: String to output to the serial port
     * @Retval none
  *
  * @attention
  * 
  */
void rt_hw_console_output(const char *str)
{	
	/ * Enter the critical section */
    rt_enter_critical();

	/ * Until the string ends */
    while (*str!='\0')
	{
		/ * Change the bank */
        if (*str=='\n')
		{
			UART1_SendByte('\r');
			while (R8_UART1_TFC == UART_FIFO_SIZE);
			
		}

		UART1_SendByte( *str++);				
		while (R8_UART1_TFC == UART_FIFO_SIZE);	
		 
	}	

	/ * Exit the critical section */
    rt_exit_critical();
}

Compiled, finished work