add cortex-v7a support
How To Run:
see TencentOS-tiny\board\ALPHA_I.MX_emmc_256ddr\README.md
TODO Next:
1. VFP support
2. fault diagnosis support
3. qemu vexpress ca9 support
4. raspberry pi support
5. SMP support
This commit is contained in:
daishengdong
230
board/ALPHA_I.MX_emmc_256ddr/bsp/rtc/bsp_rtc.c
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230
board/ALPHA_I.MX_emmc_256ddr/bsp/rtc/bsp_rtc.c
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/***************************************************************
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Copyright © zuozhongkai Co., Ltd. 1998-2019. All rights reserved.
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文件名 : bsp_rtc.c
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作者 : 左忠凯
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版本 : V1.0
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描述 : RTC驱动文件。
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其他 : 无
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论坛 : www.openedv.com
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日志 : 初版V1.0 2019/1/3 左忠凯创建
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***************************************************************/
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#include "bsp_rtc.h"
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#include "printf.h"
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/*
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* 描述:初始化RTC
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*/
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void rtc_init(void)
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{
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/*
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* 设置HPCOMR寄存器
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* bit[31] 1 : 允许访问SNVS寄存器，一定要置1
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* bit[8] 1 : 此位置1，需要签署NDA协议才能看到此位的详细说明，
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* 这里不置1也没问题
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*/
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SNVS->HPCOMR |= (1 << 31) | (1 << 8);
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#if 0
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struct rtc_datetime rtcdate;
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rtcdate.year = 2018U;
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rtcdate.month = 12U;
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rtcdate.day = 13U;
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rtcdate.hour = 14U;
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rtcdate.minute = 52;
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rtcdate.second = 0;
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rtc_setDatetime(&rtcdate); //初始化时间和日期
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#endif
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rtc_enable(); //使能RTC
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}
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/*
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* 描述: 开启RTC
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*/
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void rtc_enable(void)
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{
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/*
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* LPCR寄存器bit0置1，使能RTC
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*/
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SNVS->LPCR |= 1 << 0;
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while(!(SNVS->LPCR & 0X01));//等待使能完成
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}
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/*
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* 描述: 关闭RTC
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*/
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void rtc_disable(void)
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{
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/*
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* LPCR寄存器bit0置0，关闭RTC
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*/
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SNVS->LPCR &= ~(1 << 0);
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while(SNVS->LPCR & 0X01);//等待关闭完成
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}
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/*
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* @description : 判断指定年份是否为闰年，闰年条件如下:
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* @param - year: 要判断的年份
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* @return : 1 是闰年，0 不是闰年
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*/
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unsigned char rtc_isleapyear(unsigned short year)
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{
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unsigned char value=0;
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if(year % 400 == 0)
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value = 1;
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else
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{
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if((year % 4 == 0) && (year % 100 != 0))
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value = 1;
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else
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value = 0;
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}
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return value;
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}
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/*
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* @description : 将时间转换为秒数
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* @param - datetime: 要转换日期和时间。
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* @return : 转换后的秒数
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*/
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unsigned int rtc_coverdate_to_seconds(struct rtc_datetime *datetime)
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{
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unsigned short i = 0;
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unsigned int seconds = 0;
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unsigned int days = 0;
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unsigned short monthdays[] = {0U, 0U, 31U, 59U, 90U, 120U, 151U, 181U, 212U, 243U, 273U, 304U, 334U};
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for(i = 1970; i < datetime->year; i++)
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{
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days += DAYS_IN_A_YEAR; /* 平年，每年365天 */
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if(rtc_isleapyear(i)) days += 1;/* 闰年多加一天 */
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}
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days += monthdays[datetime->month];
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if(rtc_isleapyear(i) && (datetime->month >= 3)) days += 1;/* 闰年，并且当前月份大于等于3月的话加一天 */
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days += datetime->day - 1;
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seconds = days * SECONDS_IN_A_DAY +
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datetime->hour * SECONDS_IN_A_HOUR +
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datetime->minute * SECONDS_IN_A_MINUTE +
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datetime->second;
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return seconds;
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}
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/*
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* @description : 设置时间和日期
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* @param - datetime: 要设置的日期和时间
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* @return : 无
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*/
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void rtc_setdatetime(struct rtc_datetime *datetime)
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{
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unsigned int seconds = 0;
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unsigned int tmp = SNVS->LPCR;
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rtc_disable(); /* 设置寄存器HPRTCMR和HPRTCLR的时候一定要先关闭RTC */
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/* 先将时间转换为秒 */
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seconds = rtc_coverdate_to_seconds(datetime);
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SNVS->LPSRTCMR = (unsigned int)(seconds >> 17); /* 设置高16位 */
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SNVS->LPSRTCLR = (unsigned int)(seconds << 15); /* 设置地16位 */
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/* 如果此前RTC是打开的在设置完RTC时间以后需要重新打开RTC */
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if (tmp & 0x1)
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rtc_enable();
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}
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/*
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* @description : 将秒数转换为时间
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* @param - seconds : 要转换的秒数
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* @param - datetime: 转换后的日期和时间
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* @return : 无
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*/
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void rtc_convertseconds_to_datetime(unsigned int seconds, struct rtc_datetime *datetime)
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{
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unsigned int x;
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unsigned int secondsRemaining, days;
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unsigned short daysInYear;
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/* 每个月的天数 */
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unsigned char daysPerMonth[] = {0U, 31U, 28U, 31U, 30U, 31U, 30U, 31U, 31U, 30U, 31U, 30U, 31U};
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secondsRemaining = seconds; /* 剩余秒数初始化 */
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days = secondsRemaining / SECONDS_IN_A_DAY + 1; /* 根据秒数计算天数,加1是当前天数 */
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secondsRemaining = secondsRemaining % SECONDS_IN_A_DAY; /*计算天数以后剩余的秒数 */
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/* 计算时、分、秒 */
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datetime->hour = secondsRemaining / SECONDS_IN_A_HOUR;
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secondsRemaining = secondsRemaining % SECONDS_IN_A_HOUR;
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datetime->minute = secondsRemaining / 60;
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datetime->second = secondsRemaining % SECONDS_IN_A_MINUTE;
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/* 计算年 */
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daysInYear = DAYS_IN_A_YEAR;
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datetime->year = YEAR_RANGE_START;
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while(days > daysInYear)
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{
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/* 根据天数计算年 */
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days -= daysInYear;
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datetime->year++;
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/* 处理闰年 */
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if (!rtc_isleapyear(datetime->year))
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daysInYear = DAYS_IN_A_YEAR;
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else /*闰年，天数加一 */
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daysInYear = DAYS_IN_A_YEAR + 1;
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}
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/*根据剩余的天数计算月份 */
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if(rtc_isleapyear(datetime->year)) /* 如果是闰年的话2月加一天 */
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daysPerMonth[2] = 29;
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for(x = 1; x <= 12; x++)
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{
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if (days <= daysPerMonth[x])
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{
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datetime->month = x;
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break;
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}
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else
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{
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days -= daysPerMonth[x];
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}
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}
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datetime->day = days;
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}
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/*
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* @description : 获取RTC当前秒数
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* @param : 无
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* @return : 当前秒数
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*/
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unsigned int rtc_getseconds(void)
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{
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unsigned int seconds = 0;
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seconds = (SNVS->LPSRTCMR << 17) | (SNVS->LPSRTCLR >> 15);
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return seconds;
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}
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/*
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* @description : 获取当前时间
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* @param - datetime: 获取到的时间，日期等参数
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* @return : 无
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*/
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void rtc_getdatetime(struct rtc_datetime *datetime)
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{
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unsigned int seconds = 0;
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seconds = rtc_getseconds();
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rtc_convertseconds_to_datetime(seconds, datetime);
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}
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46
board/ALPHA_I.MX_emmc_256ddr/bsp/rtc/bsp_rtc.h
Normal file
46
board/ALPHA_I.MX_emmc_256ddr/bsp/rtc/bsp_rtc.h
Normal file
@@ -0,0 +1,46 @@
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#ifndef _BSP_RTC_H
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#define _BSP_RTC_H
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/***************************************************************
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Copyright © zuozhongkai Co., Ltd. 1998-2019. All rights reserved.
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文件名 : bsp_rtc.c
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作者 : 左忠凯
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版本 : V1.0
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描述 : RTC驱动头文件。
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其他 : 无
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论坛 : www.openedv.com
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日志 : 初版V1.0 2019/1/3 左忠凯创建
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***************************************************************/
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#include "bsp.h"
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/* 相关宏定义 */
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#define SECONDS_IN_A_DAY (86400) /* 一天86400秒 */
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#define SECONDS_IN_A_HOUR (3600) /* 一个小时3600秒 */
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#define SECONDS_IN_A_MINUTE (60) /* 一分钟60秒 */
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#define DAYS_IN_A_YEAR (365) /* 一年365天 */
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#define YEAR_RANGE_START (1970) /* 开始年份1970年 */
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#define YEAR_RANGE_END (2099) /* 结束年份2099年 */
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/* 时间日期结构体 */
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struct rtc_datetime
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{
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unsigned short year; /* 范围为:1970 ~ 2099 */
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unsigned char month; /* 范围为:1 ~ 12 */
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unsigned char day; /* 范围为:1 ~ 31 (不同的月，天数不同).*/
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unsigned char hour; /* 范围为:0 ~ 23 */
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unsigned char minute; /* 范围为:0 ~ 59 */
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unsigned char second; /* 范围为:0 ~ 59 */
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};
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/* 函数声明 */
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void rtc_init(void);
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void rtc_enable(void);
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void rtc_disable(void);
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unsigned int rtc_coverdate_to_seconds(struct rtc_datetime *datetime);
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unsigned int rtc_getseconds(void);
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void rtc_setdatetime(struct rtc_datetime *datetime);
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void rtc_getdatetime(struct rtc_datetime *datetime)
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;
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#endif
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