帮我写一个stm32f103c8t6的闹钟配置

好的，针对你的问题，我可以为你提供一些stm32f103c8t6闹钟配置的基本步骤：

1. 首先在代码中引入头文件包含相关的库函数，如下所示：

#include "stm32f10x.h"
#include "stm32f10x_rtc.h"
#include "stm32f10x_pwr.h"

2. 对RTC进行初始化，使其能够正常工作。初始化步骤如下：

/* Enable PWR and BKP clocks */
RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR | RCC_APB1Periph_BKP, ENABLE);

/* Allow access to BKP Domain */
PWR_BackupAccessCmd(ENABLE);

/* Reset Backup Domain */
BKP_DeInit();

/* Enable LSE */
RCC_LSEConfig(RCC_LSE_ON);
while (RCC_GetFlagStatus(RCC_FLAG_LSERDY) == RESET);

/* Select LSE as RTC Clock Source */
RCC_RTCCLKConfig(RCC_RTCCLKSource_LSE);

/* Enable RTC Clock */
RCC_RTCCLKCmd(ENABLE);

/* Wait for RTC registers synchronization */
RTC_WaitForSynchro();

/* Set RTC prescaler: set RTC period to 1sec */
RTC_SetPrescaler(32767); /* RTC period = RTCCLK/RTC_PR = (32.768 KHz)/(32767+1) */

/* Wait until last write operation on RTC registers has finished */
RTC_WaitForLastTask();

3. 设置闹钟时间并开启闹钟，具体代码如下：

/* Set the alarm to the desired time */
RTC_SetAlarm(RTC_Format_BIN, RTC_AlarmTime);

/* Enable RTC Alarm */
RTC_ITConfig(RTC_IT_ALR, ENABLE);

/* Wait until last write operation on RTC registers has finished */
RTC_WaitForLastTask();

4. 在main函数中开启中断，并等待闹钟触发，具体代码如下：

/* Enable RTC Alarm Interrupt */
NVIC_InitTypeDef NVIC_InitStructure;
NVIC_InitStructure.NVIC_IRQChannel = RTCAlarm_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);

/* Wait until RTC Alarm */
while (1);

以上就是基本的stm32f103c8t6闹钟配置步骤，你可以根据自己的需要对相关参数进行调整。如果你还有其他相关问题，请继续提问。