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S-35390A芯片是计时芯片,一般用来计算时间。低功耗,宽电压,受温度影响小,适用于很多电路。它有一个问题,不阻止用户设置不存在的时间,设置进去之后计时或者闹钟定时会出错。
首先我们先读懂这个芯片是怎么用的。
基本上一看这个引脚表就知道大概,1号和5号引脚是中断输出引脚,2号和3号引脚之间应该接个晶振,6号和7号引脚通过IIC跟主控芯片通讯,其余的都是电源和地。
大概就能知道里面的框架是啥样的,里面最主要就是实时时间的寄存器,通过跟中断1和中断2寄存器对比决定两路中断的输出。具体时间通过中间的总线借助IIC串口通讯模块发出去。另外就是有几个检测电源电压的寄存器、状态寄存器、时钟校正寄存器和一个给用户可以当做E方用的自由寄存器。
跟普通的IIC一样,主控芯片先发个设备号0110,跟着3位的命令,1位的读写方向,等到计时芯片ACK之后,继续发送剩下的数据。
这里有所有的命令,读写状态寄存器1和2、读写实时数据1和2、读写中断寄存器1和2、存取时钟校正寄存器和自由寄存器。
标1的是只写。标2的是用户自由寄存器,对应上面框图的用户自由寄存器。标3和4的是只读。标5的是测试位,使用的时候要保证为0。标6的怎么写都不影响。
POC检测电源电流,初始化的时候是0,有电流的时候是1,如果上电之后为0,就要重启整个芯片。
BLD检测电源电压,正常为0,读到是1的时候要重启整个芯片了。
INT1和INT2是中断事件发生标志位。
SC0和SC1都是用户自由定义的。
12/24如果是0就是12小时制,如果是1就是24小时制。
RESET平时为0,写个1进去就重启芯片。
TEST测试位设置为0就行,当设置为1的时候,INT1会输出1Hz的方波。
INT2AE、 INT2ME、 INT2FE共同决定了中断输出2引脚的输出模式:无中断、输出用户设定的频率、每分钟边沿中断、50%占空比的每分钟周期中断、闹钟模式。
INT1AE、 INT1ME、 INT1FE共同决定了中断输出1引脚的输出模式:无中断、输出用户设定的频率、每分钟边沿中断、50%占空比的每分钟周期中断、闹钟模式、每分钟周期中断、输出32.768kHz。
以写入实时数据寄存器1为例,流程如下。
里面的年是按照西历来计算的,只能写0-99,使用BCD码,低位在前。
譬如2053年,就写入53,二进制Y1-Y80就是1100 1010.
AM/PM如果是24小时制就无所谓写什么,如果是12小时制0是am,1就是pm.
后面的实时数据寄存器2也是一样。
根据状态寄存器2的设置,选择中断输出引脚是闹钟模式或者输出用户设定的频率。
时间到了就触发中断,里面的AM/PM要跟实时时钟里面一致。
B0的三个标志位表示设置的周、时、分是否有效,譬如下面这个设置闹钟为每天晚上7点,周的标志位就需要为0.
频率是每个位累加的,SC是用户自由寄存器。
可以提前和延迟一定的时间。
写一些用户想存储的信息,当做E方使用
上电后POC为0,或者POC为1但是INT没有输出1 Hz方波,芯片内部数据可能处于不确定状态,需要重新上电。
上电之后由于检测电路正在工作,在上电后至少0.5秒后才进行数据传输。
命令
- #define S35390_TIME_ADDRESS 0x32
- #define S35390_STATUS1_ADDRESS 0x30
- #define S35390_STATUS2_ADDRESS 0x31
- #define S35390_INT1_REG_ADDRESS 0x34
- #define S35390_INT2_REG_ADDRESS 0x35
当前时间结构体和中断闹钟结构体
- typedef struct
- {
- unsigned int year; //year
- unsigned char month; //month
- unsigned char day; //day
- unsigned char hour; //hour
- unsigned char minute; //minute
- unsigned char second; //second
- unsigned char week; //week
- }rtc_time;
-
- typedef struct
- {
- unsigned char minute; //minute
- unsigned char hour; //hour
- unsigned char week; //week
- unsigned char min_en; //minute enable
- unsigned char hour_en; //hour enable
- unsigned char week_en; //min enable
- }rtc_alarm;
初始化函数里面只是要配置下主控芯片的IIC外设,设置下上电默认时间。
读取多字节数据
- bool S35390_ReadRegs(uint8_t addr, uint8_t length,uint8_t *values)
- {
- status_t ret=STATUS_BUSY;
- uint8_t Try = 3;
-
- if(xSemaphore_i2c != NULL )
- {
- if( xSemaphoreTake( xSemaphore_i2c, ( TickType_t ) 50 ) == pdTRUE )//获取信号量
- {
- while((Try--)&&(ret != STATUS_SUCCESS))//最多尝试3次
- {
- lpi2cMasterState.slaveAddress = addr;//读取地址
-
- /* Request data from the bus slave */
- ret = I2C_DRV_MasterReceiveDataBlock(INST_LPI2C1,values,length,true,10);
- }
- xSemaphoreGive( xSemaphore_i2c);//释放信号量
- }
- }
-
- if(ret != STATUS_SUCCESS)//读出失败
- {
- I2C_Reset();//重新初始化IIC模块
- }
- return ret;
- }
读取多字节数据
- static bool S35390_WriteRegs(uint8_t addr, uint8_t length, uint8_t *values)
- {
- status_t ret=STATUS_BUSY;
- uint8_t Try = 3;
-
- uint8_t masterbuffer[32]={0};
- memcpy(&masterbuffer[0],values,length);
-
- if( xSemaphore_i2c != NULL )
- {
- if( xSemaphoreTake( xSemaphore_i2c, ( TickType_t ) 50 ) == pdTRUE )//获取信号量
- {
- while((Try--)&&(ret != STATUS_SUCCESS))//最多尝试3次
- {
- lpi2cMasterState.slaveAddress = addr;//写入地址
-
- ret=I2C_DRV_MasterSendDataBlock(INST_LPI2C1, masterbuffer, length, true,100UL);
- }
- xSemaphoreGive( xSemaphore_i2c);//释放信号量
- }
- }
-
- if(ret != STATUS_SUCCESS)//写入失败
- {
- I2C_Reset();//重新初始化IIC模块
- }
-
- return ret;
- }
别被这个名字骗了,其实就是将获取的年数据BCD码转成十进制数据。
- static uint8_t S35390_GetYear(uint8_t regYearData )
- {
- uint8_t timeYearData = 0x00;
-
- if ( regYearData & 1 )
- {
- timeYearData += 80;
- }
- regYearData >>= 1;
- if ( regYearData & 1 )
- {
- timeYearData += 40;
- }
- regYearData >>= 1;
- if ( regYearData & 1 )
- {
- timeYearData += 20;
- }
- regYearData >>= 1;
- if ( regYearData & 1 )
- {
- timeYearData += 10;
- }
- regYearData >>= 1;
- if ( regYearData & 1 )
- {
- timeYearData += 8;
- }
- regYearData >>= 1;
- if ( regYearData & 1 )
- {
- timeYearData += 4;
- }
- regYearData >>= 1;
- if ( regYearData & 1 )
- {
- timeYearData += 2;
- }
- regYearData >>= 1;
- if ( regYearData & 1 )
- {
- timeYearData += 1;
- }
-
- if ( timeYearData > 99 )//最大限制
- {
- timeYearData = 99;
- }
- else
- {
- ; /* do nothing*/
- }
-
- return timeYearData;
- }
获取月数据BCD码转成十进制数据。
- static uint8_t S35390_GetMonth(uint8_t regMonthData )
- {
- uint8_t timeMonthData = 0x00;
-
- regMonthData >>= 3;
- if ( regMonthData & 1 )
- {
- timeMonthData += 10;
- }
- regMonthData >>= 1;
- if ( regMonthData & 1 )
- {
- timeMonthData += 8;
- }
- regMonthData >>= 1;
- if ( regMonthData & 1 )
- {
- timeMonthData += 4;
- }
- regMonthData >>= 1;
- if ( regMonthData & 1 )
- {
- timeMonthData += 2;
- }
- regMonthData >>= 1;
- if ( regMonthData & 1 )
- {
- timeMonthData += 1;
- }
-
- if ( timeMonthData == 0x00 )//最小限制
- {
- timeMonthData = 0x01;
- }
- else if ( timeMonthData > 12 )//最大限制
- {
- timeMonthData = 12;
- }
- else
- {
- ; /* do nothing*/
- }
-
- return timeMonthData;
- }
获取日数据BCD码转成十进制数据。
- static uint8_t S35390_GetDay(uint8_t regDayData )
- {
- uint8_t timeDayData = 0x00;
-
- regDayData >>= 2;
- if ( regDayData & 1 )
- {
- timeDayData += 20;
- }
- regDayData >>= 1;
- if ( regDayData & 1 )
- {
- timeDayData += 10;
- }
- regDayData >>= 1;
- if ( regDayData & 1 )
- {
- timeDayData += 8;
- }
- regDayData >>= 1;
- if ( regDayData & 1 )
- {
- timeDayData += 4;
- }
- regDayData >>= 1;
- if ( regDayData & 1 )
- {
- timeDayData += 2;
- }
- regDayData >>= 1;
- if ( regDayData & 1 )
- {
- timeDayData += 1;
- }
-
- if ( timeDayData == 0 )//最小限制
- {
- timeDayData = 1;
- }
- else if ( timeDayData > 31 )//最大限制
- {
- timeDayData = 31;
- }
- else
- {
- ; /* do nothing*/
- }
-
- return timeDayData;
- }
获取周数据BCD码转成十进制数据。
- static uint8_t S35390_GetWeek(uint8_t regWeekData )
- {
- uint8_t timeWeekData = 0x00;
-
- regWeekData >>= 5;
- if ( regWeekData & 1 )
- {
- timeWeekData += 4;
- }
- regWeekData >>= 1;
- if ( regWeekData & 1 )
- {
- timeWeekData += 2;
- }
- regWeekData >>= 1;
- if ( regWeekData & 1 )
- {
- timeWeekData += 1;
- }
-
- return timeWeekData;
- }
获取时数据BCD码转成十进制数据。
- static uint8_t S35390_GetHour(uint8_t regHourData )
- {
- uint8_t timeHourData = 0x00;
-
- regHourData >>= 2;
- if ( regHourData & 1 )
- {
- timeHourData += 20;
- }
- regHourData >>= 1;
- if ( regHourData & 1 )
- {
- timeHourData += 10;
- }
- regHourData >>= 1;
- if ( regHourData & 1 )
- {
- timeHourData += 8;
- }
- regHourData >>= 1;
- if ( regHourData & 1 )
- {
- timeHourData += 4;
- }
- regHourData >>= 1;
- if ( regHourData & 1 )
- {
- timeHourData += 2;
- }
- regHourData >>= 1;
- if ( regHourData & 1 )
- {
- timeHourData += 1;
- }
-
- if ( timeHourData > 23 )//最大限制
- {
- timeHourData = 23;
- }
- else
- {
- ; /* do nothing*/
- }
-
- return timeHourData;
- }
获取分数据BCD码转成十进制数据。
- static uint8_t S35390_GetMinute(uint8_t regMinuteData )
- {
- uint8_t timeMinuteData = 0x00;
-
- regMinuteData >>= 1;
- if ( regMinuteData & 1 )
- {
- timeMinuteData += 40;
- }
- regMinuteData >>= 1;
- if ( regMinuteData & 1 )
- {
- timeMinuteData += 20;
- }
- regMinuteData >>= 1;
- if ( regMinuteData & 1 )
- {
- timeMinuteData += 10;
- }
- regMinuteData >>= 1;
- if ( regMinuteData & 1 )
- {
- timeMinuteData += 8;
- }
- regMinuteData >>= 1;
- if ( regMinuteData & 1 )
- {
- timeMinuteData += 4;
- }
- regMinuteData >>= 1;
- if ( regMinuteData & 1 )
- {
- timeMinuteData += 2;
- }
- regMinuteData >>= 1;
- if ( regMinuteData & 1 )
- {
- timeMinuteData += 1;
- }
-
- if ( timeMinuteData > 59 )//最大限制
- {
- timeMinuteData = 59;
- }
- else
- {
- ; /* do nothing*/
- }
-
- return timeMinuteData;
- }
别被它名字骗了,这个接口只是将年数据转换成BCD码,然后返回回去。
- static uint8_t S35390_SetYear(uint16_t timeYearData )
- {
- uint8_t regYearData = 0x00;
-
- if (timeYearData >= 2000)//允许入参格式为2000+的
- {
- timeYearData -= 2000;
- }
- else
- {
- ; /* do nothing*/
- }
-
- if (timeYearData > 99)//限制入参大小
- {
- timeYearData = 0;
- }
- else
- {
- ; /* do nothing*/
- }
-
- if ((timeYearData/80) == 1)
- {
- regYearData |= 0x01;
- timeYearData -= 80;
- }
- if ((timeYearData/40) == 1)
- {
- regYearData |= 0x02;
- timeYearData -= 40;
- }
- if ((timeYearData/20) == 1)
- {
- regYearData |= 0x04;
- timeYearData -= 20;
- }
- if ((timeYearData/10) == 1)
- {
- regYearData |= 0x08;
- timeYearData -= 10;
- }
- if ((timeYearData/8) == 1)
- {
- regYearData |= 0x10;
- timeYearData -= 8;
- }
- if ((timeYearData/4) == 1)
- {
- regYearData |= 0x20;
- timeYearData -= 4;
- }
- if ((timeYearData/2) == 1)
- {
- regYearData |= 0x40;
- timeYearData -= 2;
- }
- if (timeYearData == 1)
- {
- regYearData |= 0x80;
- }
-
- return regYearData;
- }
将月数据转换成BCD码,然后返回回去。
- static uint8_t S35390_SetMonth(uint8_t timeMonthData )
- {
- uint8_t regMonthData = 0x00;
-
- if (timeMonthData == 0x00)//限制最小
- {
- timeMonthData = 0x01;
- }
- else if (timeMonthData > 12)//限制最大
- {
- timeMonthData = 1;
- }
- else
- {
- ; /* do nothing*/
- }
-
- if ((timeMonthData/10) == 1)
- {
- regMonthData |= 0x08;
- timeMonthData -= 10;
- }
- if ((timeMonthData/8) == 1)
- {
- regMonthData |= 0x10;
- timeMonthData -= 8;
- }
- if ((timeMonthData/4) == 1)
- {
- regMonthData |= 0x20;
- timeMonthData -= 4;
- }
- if ((timeMonthData/2) == 1)
- {
- regMonthData |= 0x40;
- timeMonthData -= 2;
- }
- if (timeMonthData == 1)
- {
- regMonthData |= 0x80;
- }
-
- return regMonthData;
- }
将日数据转换成BCD码,然后返回回去。
- static uint8_t S35390_SetDay(uint8_t timeDayData )
- {
- uint8_t regDayData = 0x00;
-
- if (timeDayData == 0x00)//限制最小
- {
- timeDayData = 0x01;
- }
- else if (timeDayData > 31)//限制最大
- {
- timeDayData = 1;
- }
- else
- {
- ; /* do nothing*/
- }
-
- if ((timeDayData/20) == 1)
- {
- regDayData |= 0x04;
- timeDayData -= 20;
- }
- if ((timeDayData/10) == 1)
- {
- regDayData |= 0x08;
- timeDayData -= 10;
- }
- if ((timeDayData/8) == 1)
- {
- regDayData |= 0x10;
- timeDayData -= 8;
- }
- if ((timeDayData/4) == 1)
- {
- regDayData |= 0x20;
- timeDayData -= 4;
- }
- if ((timeDayData/2) == 1)
- {
- regDayData |= 0x40;
- timeDayData -= 2;
- }
- if (timeDayData == 1)
- {
- regDayData |= 0x80;
- }
-
- return regDayData;
- }
将周数据转换成BCD码,然后返回回去。
- static uint8_t S35390_SetWeek(uint8_t timeWeekData )
- {
- uint8_t regWeekData = 0x00;
-
- if (timeWeekData > 6)//限制最大
- {
- timeWeekData = 0;
- }
- else
- {
- ; /* do nothing*/
- }
-
- if ((timeWeekData/4) == 1)
- {
- regWeekData |= 0x20;
- timeWeekData -= 4;
- }
- if ((timeWeekData/2) == 1)
- {
- regWeekData |= 0x40;
- timeWeekData -= 2;
- }
- if (timeWeekData == 1)
- {
- regWeekData |= 0x80;
- }
-
- return regWeekData;
- }
将时数据转换成BCD码,然后返回回去。
- static uint8_t S35390_SetHour(uint8_t timeHourData)
- {
- uint8_t regHourData = 0x00;
-
- if (timeHourData > 23)//限制最大
- {
- timeHourData = 0;
- }
- else
- {
- ; /* do nothing*/
- }
-
- if ((timeHourData/20) == 1)
- {
- regHourData |= 0x04;
- timeHourData -= 20;
- }
- if ((timeHourData/10) == 1)
- {
- regHourData |= 0x08;
- timeHourData -= 10;
- }
- if ((timeHourData/8) == 1)
- {
- regHourData |= 0x10;
- timeHourData -= 8;
- }
- if ((timeHourData/4) == 1)
- {
- regHourData |= 0x20;
- timeHourData -= 4;
- }
- if ((timeHourData/2) == 1)
- {
- regHourData |= 0x40;
- timeHourData -= 2;
- }
- if (timeHourData == 1)
- {
- regHourData |= 0x80;
- }
-
- return regHourData;
- }
将分数据转换成BCD码,然后返回回去。
- static uint8_t S35390_SetMinute(uint8_t timeMinuteData )
- {
- uint8_t regMinuteData = 0x00;
-
- if (timeMinuteData > 59)//限制最大
- {
- timeMinuteData = 0;
- }
- else
- {
- ; /* do nothing*/
- }
-
- if ((timeMinuteData/40) == 1)
- {
- regMinuteData |= 0x02;
- timeMinuteData -= 40;
- }
- if ((timeMinuteData/20) == 1)
- {
- regMinuteData |= 0x04;
- timeMinuteData -= 20;
- }
- if ((timeMinuteData/10) == 1)
- {
- regMinuteData |= 0x08;
- timeMinuteData -= 10;
- }
- if ((timeMinuteData/8) == 1)
- {
- regMinuteData |= 0x10;
- timeMinuteData -= 8;
- }
- if ((timeMinuteData/4) == 1)
- {
- regMinuteData |= 0x20;
- timeMinuteData -= 4;
- }
- if ((timeMinuteData/2) == 1)
- {
- regMinuteData |= 0x40;
- timeMinuteData -= 2;
- }
- if (timeMinuteData == 1)
- {
- regMinuteData |= 0x80;
- }
-
- return regMinuteData;
- }
获取状态寄存器1、状态寄存器2也是如此。
- uint8_t S35390_GetStatusReg1(uint8_t *statusReg)
- {
- return S35390_ReadRegs(S35390_STATUS1_ADDRESS,1,statusReg);
- }
设置状态寄存器1、状态寄存器2也是如此。
- uint8_t S35390_SetStatusReg1(uint8_t *statusReg)
- {
- return S35390_WriteRegs(S35390_STATUS1_ADDRESS,1, statusReg);
- }
设置中断闹钟1、中断闹钟2也是如此,注意需要先在状态寄存器里面设置为闹钟模式。
- int S35390_SetAlarm1(rtc_alarm *alarmTime)
- {
- status_t ret=STATUS_BUSY;
- uint8_t reg_data[3] = {0};
- uint8_t flg_am_pm = 0; //0:am,1:pm
-
- reg_data[0] = S35390_SetWeek(alarmTime->week) | alarmTime->week_en;
-
- if(alarmTime->hour >= 12)
- {
- flg_am_pm = 1;
- }
-
- reg_data[1] = S35390_SetHour(alarmTime->hour) | alarmTime->hour_en | (flg_am_pm << 1);
- reg_data[2] = S35390_SetMinute(alarmTime->minute) | alarmTime->min_en;
-
- ret = S35390_WriteRegs(S35390_INT1_REG_ADDRESS,3,reg_data);
-
- return ret;
- }
获取闹钟1设置
- int S35390_GetAlarm1(rtc_alarm *alarmTime)
- {
- status_t ret=STATUS_BUSY;
- uint8_t reg_data[3] = {0};
-
- ret = S35390_ReadRegs(S35390_INT1_REG_ADDRESS,3, reg_data);
-
- if(ret != STATUS_SUCCESS)
- {
- LOG_ERR( "Get alarm set time error!\r\n");
- }
- else
- {
- alarmTime->week = S35390_GetWeek(reg_data[0]);
- alarmTime->week_en = reg_data[0] & 0x01;
-
- alarmTime->hour = S35390_GetHour(reg_data[1]);
- alarmTime->hour_en = reg_data[1] & 0x01;
-
- alarmTime->minute = S35390_GetMinute(reg_data[2]);
- alarmTime->min_en = reg_data[2] & 0x01;
- }
-
- return ret;
- }
使能闹钟模式,其实就是将状态寄存器1改成闹钟模式。
- int S35390_EnableAlarm1(void)
- {
- status_t ret=STATUS_BUSY;
- uint8_t reg_data = 0;
-
- ret = S35390_ReadRegs(S35390_STATUS2_ADDRESS,1, ®_data);
-
- if(STATUS_SUCCESS == ret)
- {
- //INT1AE = 1;INT1ME = 0;INT1FE = 0;
- reg_data &= ~(0x01 << 4);
- reg_data |= (0x01 << 5);
- reg_data &= ~(0x03 << 6);
- ret = S35390_WriteRegs(S35390_STATUS2_ADDRESS,1, ®_data);
- }
-
- return ret;
- }
失能闹钟模式,其实就是改变状态寄存器1。
- int S35390_DisableAlarm(void)
- {
- status_t ret=STATUS_BUSY;
- uint8_t reg_data = 0;
-
- ret = S35390_ReadRegs(S35390_STATUS1_ADDRESS,1, ®_data);
-
- if(STATUS_SUCCESS == ret)
- {
- //INT1AE = 0;INT1ME = 0;INT1FE = 0;
- reg_data &= ~(0x01 << 4);
- reg_data &= ~(0x01 << 5);
- reg_data &= ~(0x03 << 6);
- ret = S35390_WriteRegs(S35390_STATUS1_ADDRESS,1, ®_data);
- }
-
- return ret;
- }
获取当前时间
- #define S35390_BTC_SEC 0x06
- #define S35390_BTC_MIN 0x05
- #define S35390_BTC_HOUR 0x04
- #define S35390_BTC_WEEK 0x03
- #define S35390_BTC_DAY 0x02
- #define S35390_BTC_MONTH 0x01
- #define S35390_BTC_YEAR 0x00
-
- uint8_t S35390_GetTime(rtc_time *time)
- {
- uint8_t reg_date[7]={0};
- uint8_t err = 0;
-
- err = S35390_ReadRegs(S35390_TIME_ADDRESS,7,reg_date);//获取当前时间到reg_date
-
- time->second = S35390_GetMinute(reg_date[S35390_BTC_SEC]); //转换成十进制数据
- time->minute = S35390_GetMinute(reg_date[S35390_BTC_MIN]);
- time->hour = S35390_GetHour(reg_date[S35390_BTC_HOUR]);
- time->week = S35390_GetWeek(reg_date[S35390_BTC_WEEK]);
- time->day = S35390_GetDay(reg_date[S35390_BTC_DAY]);
- time->month = S35390_GetMonth(reg_date[S35390_BTC_MONTH]);
- time->year = S35390_GetYear(reg_date[S35390_BTC_YEAR])+2000;
-
- LOG_INFO("%-30s%s%d,%d,%d,%d,%d,%d,%d\r\n","GetRTC","=",time->year,time->month,time->day,time->hour,time->minute,time->second,time->week);
-
- return err;
- }
其实就是将状态寄存器设置为闹钟模式
- int S35390_EnableAlarm(void)
- {
- status_t ret=STATUS_BUSY;
- uint8_t reg_data = 0;
-
- ret = S35390_ReadRegs(S35390_STATUS2_ADDRESS,1, ®_data);
-
- if(STATUS_SUCCESS == ret)
- {
- //INT1AE = 1;INT1ME = 0;INT1FE = 0;
- reg_data &= ~(0x01 << 4);
- reg_data |= (0x01 << 5);
- reg_data &= ~(0x03 << 6);
- ret = S35390_WriteRegs(S35390_STATUS2_ADDRESS,1, ®_data);
- }
-
- return ret;
- }
设置当前时间
- uint8_t S35390_SetTime(rtc_time *time)
- {
- uint8_t reg_date[7] = {0};
- uint8_t ret = 0xff;
- uint8_t week_tmp = 0;
-
- reg_date[S35390_BTC_SEC] = S35390_SetMinute(time->second); //转换成BCD码
- reg_date[S35390_BTC_MIN] = S35390_SetMinute(time->minute);
- reg_date[S35390_BTC_HOUR] = S35390_SetHour(time->hour);
-
- week_tmp = CalculateWeekForKimLarsenCalculationFormula(time->year,time->month,time->day);//计算出周数据
-
- if(time->week != week_tmp)
- {
- LOG_ERR("week set error!\r\n");
- }
- reg_date[S35390_BTC_WEEK] = S35390_SetWeek(week_tmp);
-
- reg_date[S35390_BTC_DAY] = S35390_SetDay(time->day);
- reg_date[S35390_BTC_MONTH] = S35390_SetMonth(time->month);
- reg_date[S35390_BTC_YEAR] = S35390_SetYear(time->year);
-
- ret = S35390_WriteRegs(S35390_TIME_ADDRESS,7, reg_date);
-
- return ret;
- }
-
- static uint8_t CalculateWeekForKimLarsenCalculationFormula(uint16_t year, uint8_t month, uint8_t date)
- {
- uint8_t week;
-
- if ((month == 1) || (month == 2)) {
- month += 12;
- year--;
- }
- week = (date + 2 * month + 3 * (month + 1) / 5 + year + year / 4 - year / 100 + year / 400 + 1) % 7;
-
- return week;
- }
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