【RA4M2-SENSOR】—— 4.实现软件万年历

本主题由 dianzi_0101 于 2025-8-31 21:36 审核通过

实现软件万年历

很多人只会使用瑞萨单片机自带的RTC日历，如果让它们用一个普通的定时器来实现RTC的功能，它们永远都实现不了，学不会！已经故步自封了。
本帖就是来给这些人扫盲的，就让我来用最普通的定时器实现软件万年历！！！
我的软件架构设计如下图所示

这里直接使用ARM CM3的systick定时器，所以不需要配置RA smart了，直接用我之前配好的串口工程即可。

直接上核心代码
#include "Systick.h"
#include "ebtn_app.h"

volatile uint32_t g_tick_count = 0;
volatile uint32_t g_20ms = 0;

void hal_systick_init(void)
{
SysTick_Config(SystemCoreClock / TICKS_PER_SECONDS);
}

uint32_t HAL_GetTick(void)
{
return g_tick_count;
}

void HAL_Delay(uint32_t Delay)
{
#define HAL_MAX_DELAY 0xFFFFFFFFU

uint32_t tickstart = HAL_GetTick();
uint32_t wait = Delay;

/* Add a freq to guarantee minimum wait */
if (wait < HAL_MAX_DELAY)
{
wait++;
}

while ((HAL_GetTick() - tickstart) < wait)
{
}
}

TimeStamp datetime;
volatile uint32_t Timer_1s_Count;

/**

[url=home.php?mod=space&uid=2666770]@Brief[/url] Set the time variable of the calendar function
@param[in] Year: This parameter is year.
@param[in] Month: This parameter is month.
@param[in] Day: This parameter is day.
@param[in] Hour: This parameter is hour.
@param[in] Min: This parameter is min.
@param[in] Second: This parameter is second.
@retval Non.
*/
void Calendar_TimeVariable_Set(uint16_t Year,uint8_t Month,uint8_t Day,uint8_t Hour,uint8_t Min,uint8_t Second)
{
datetime.year = Year;
datetime.month = Month;
datetime.day = Day;
datetime.hour = Hour;
datetime.min = Min;
datetime.second = Second;
}

/**

@brief Judge whether the number of days in the month is 31
@param[in] month: This parameter is month.
@retval Yes(1) or No(0).
*/
uint8_t BigMonth(uint8_t month)
{
if(month==1 || month==3 || month==5 || month==7 ||
month==8 || month==10 || month==12)
return 1;
return 0;
}

/**

@brief Judge whether the parameter is leap year
@param[in] year: This parameter is year.
@retval Yes(1) or No(0).
*/
uint8_t LeapYear(uint16_t year)
{
uint16_t y = year;
uint16_t remainder;

remainder = y%4;
if(!remainder)
{
remainder = y%100;
if(remainder) return 1;
else
{
remainder = y%400;
if(remainder) return 0;
}
return 1;
}
return 0;
}

/**

@brief Calendar time variable update.
@param[in] Non.
@retval Non.
*/
void TimeVariable_Processing(void)
{
uint8_t day;
day = datetime.day;

datetime.second += 1;
if(datetime.second>=60)
{
datetime.second -= 60;
datetime.min++;
if(datetime.min>=60)
{
datetime.min -= 60;
datetime.hour++;
if(datetime.hour>=24)
{
datetime.hour -= 24;
day = (++datetime.day);
if(BigMonth(datetime.month))
{
if(day>=32)
{
datetime.day-=31;
day=0xff;
}
}
else
{
if(datetime.month==2)
{
if(LeapYear(datetime.year))
{
if(day>=30)
{
datetime.day-=29;
day=0xff;
}
}
else if(day>=29)
{
datetime.day-=28;
day=0xff;
}
}
else if(day>=31)
{
datetime.day-=30;
day=0xff;
}
}
if(day==0xff)
{
datetime.month++;
if(datetime.month>=13)
{
datetime.month -= 12;
datetime.year++;
}
}
else datetime.day=day;
}
}
}

}

void SysTick_Handler(void)
{
g_tick_count++;
g_20ms++;

if(g_20ms == 20)
{
	g_20ms = 0;
	//ebtn_APP_Key_Process();
}
TimeVariable_Processing();

}

判断大小月

判断闰年

年月日时分秒进制

然后再定时器里调用

TimeVariable_Processing();

主函数核心代码
#include "hal_data.h"
#include "LED.h"
#include "Systick.h"
#include "usart0.h"
#include "usart9.h"
#include "shell.h"
//#include "ebtn_app.h"

FSP_CPP_HEADER
void R_BSP_WarmStart(bsp_warm_start_event_t event);
FSP_CPP_FOOTER

/*******************************************************************************************************************//**

main() is generated by the RA Configuration editor and is used to generate threads if an RTOS is used. This function
is called by main() when no RTOS is used.
*********************************************************************************************************************/
void hal_entry(void)
{
/ TODO: add your own code here */
hal_systick_init();
UART0_Init();UART9_Init();
//ebtn_APP_Key_INIT();
//shell_init();

/**** Set the time variable of the calendar ****/
Calendar_TimeVariable_Set(2025,8,31,19,33,00);

while(1)
{
//shell_process();
```
//printf("现在时间是: %d年%d月%d日%d时%d分%d秒\r\n",ptime.year,ptime.month,ptime.day,ptime.hour,ptime.min,ptime.second);
  printf("现在时间是: %d年%d月%02d日%02d时%02d分%02d秒\r\n",datetime.year,datetime.month,datetime.day,datetime.hour,datetime.min,datetime.second);
  HAL_Delay(1000);
```
}

#if BSP_TZ_SECURE_BUILD
/* Enter non-secure code */
R_BSP_NonSecureEnter();
#endif
}

/*******************************************************************************************************************//**

This function is called at various points during the startup process. This implementation uses the event that is
called right before main() to set up the pins.
@param[in] event Where at in the start up process the code is currently at
**********************************************************************************************************************/
void R_BSP_WarmStart (bsp_warm_start_event_t event)
{
if (BSP_WARM_START_RESET == event)
{
#if BSP_FEATURE_FLASH_LP_VERSION != 0
```
/* Enable reading from data flash. */
 R_FACI_LP->DFLCTL = 1U;

 /* Would normally have to wait tDSTOP(6us) for data flash recovery. Placing the enable here, before clock and
  * C runtime initialization, should negate the need for a delay since the initialization will typically take more than 6us. */
```

#endif
}

if (BSP_WARM_START_POST_C == event)
{
    /* C runtime environment and system clocks are setup. */

    /* Configure pins. */
    R_IOPORT_Open(&IOPORT_CFG_CTRL, &IOPORT_CFG_NAME);

#if BSP_CFG_SDRAM_ENABLED

/* Setup SDRAM and initialize it. Must configure pins first. */
    R_BSP_SdramInit(true);

#endif
}
}

#if BSP_TZ_SECURE_BUILD

FSP_CPP_HEADER
BSP_CMSE_NONSECURE_ENTRY void template_nonsecure_callable ();

/* Trustzone Secure Projects require at least one nonsecure callable function in order to build (Remove this if it is not required to build). */
BSP_CMSE_NONSECURE_ENTRY void template_nonsecure_callable ()
{

}
FSP_CPP_FOOTER

#endif

烧录代码

打开串口助手

可以看到和网络时间一致，非常的准确

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