C++ rtc_init函数代码示例

static void pch_rtc_init(pci_dev_t dev)
{
	int rtc_failed;
	u8 reg8;

	reg8 = pci_read_config8(dev, GEN_PMCON_3);
	rtc_failed = reg8 & RTC_BATTERY_DEAD;
	if (rtc_failed) {
		reg8 &= ~RTC_BATTERY_DEAD;
		pci_write_config8(dev, GEN_PMCON_3, reg8);
	}
	debug("rtc_failed = 0x%x\n", rtc_failed);

#if CONFIG_HAVE_ACPI_RESUME
	/* Avoid clearing pending interrupts and resetting the RTC control
	 * register in the resume path because the Linux kernel relies on
	 * this to know if it should restart the RTC timerqueue if the wake
	 * was due to the RTC alarm.
	 */
	if (acpi_get_slp_type() == 3)
		return;
#endif
	/* TODO: Handle power failure */
	if (rtc_failed)
		printf("RTC power failed\n");
	rtc_init();
}

static void init(void) {
	usart1_init(115200, buf_in, ARR_LEN(buf_in), buf_out, ARR_LEN(buf_out));
	rtc_init();

	sei();
	puts_P(PSTR("Init complete\n\n"));
}

/* Read the time from the RTC_STAT. time_in_seconds is seconds since Jan 1970 */
int rtc_get(struct rtc_time *tmp)
{
	uint32_t cur_rtc_stat;
	int time_in_sec;
	int tm_sec, tm_min, tm_hr, tm_day;

	pr_stamp();

	if (tmp == NULL) {
		puts("Error getting the date/time\n");
		return -1;
	}

	rtc_init();
	wait_for_complete();

	/* Read the RTC_STAT register */
	cur_rtc_stat = bfin_read_RTC_STAT();

	/* Convert our encoded format into actual time values */
	tm_sec = (cur_rtc_stat & RTC_SEC) >> RTC_SEC_P;
	tm_min = (cur_rtc_stat & RTC_MIN) >> RTC_MIN_P;
	tm_hr  = (cur_rtc_stat & RTC_HR ) >> RTC_HR_P;
	tm_day = (cur_rtc_stat & RTC_DAY) >> RTC_DAY_P;

	/* Calculate the total number of seconds since epoch */
	time_in_sec = (tm_sec) + MIN_TO_SECS(tm_min) + HRS_TO_SECS(tm_hr) + DAYS_TO_SECS(tm_day);
	to_tm(time_in_sec, tmp);

	return 0;
}

int main(void)
{
#ifdef MODULE_LTC4150
    ltc4150_start();
#endif

#ifdef FEATURE_PERIPH_RTC
    rtc_init();
#endif

#ifdef MODULE_NETIF
    gnrc_netreg_entry_t dump;

    dump.pid = gnrc_pktdump_pid;
    dump.demux_ctx = GNRC_NETREG_DEMUX_CTX_ALL;
    gnrc_netreg_register(GNRC_NETTYPE_UNDEF, &dump);
#endif

    (void) puts("Welcome to RIOT!");

    char line_buf[SHELL_DEFAULT_BUFSIZE];
    shell_run(NULL, line_buf, SHELL_DEFAULT_BUFSIZE);

    return 0;
}

/*
 * This function is not exposed as an API at this point,
 * because FreeRTOS doesn't yet support dynamic changing of
 * CPU frequency. Also we need to implement hooks for
 * components which want to be notified of CPU frequency
 * changes.
 */
void esp_clk_init(void)
{
    rtc_config_t cfg = RTC_CONFIG_DEFAULT();
    rtc_init(cfg);
    rtc_clk_fast_freq_set(RTC_FAST_FREQ_8M);

#ifdef CONFIG_ESP32_RTC_CLOCK_SOURCE_EXTERNAL_CRYSTAL
    select_rtc_slow_clk(RTC_SLOW_FREQ_32K_XTAL);
#else
    select_rtc_slow_clk(RTC_SLOW_FREQ_RTC);
#endif

    uint32_t freq_mhz = CONFIG_ESP32_DEFAULT_CPU_FREQ_MHZ;
    rtc_cpu_freq_t freq = RTC_CPU_FREQ_80M;
    switch(freq_mhz) {
        case 240:
            freq = RTC_CPU_FREQ_240M;
            break;
        case 160:
            freq = RTC_CPU_FREQ_160M;
            break;
        default:
            freq_mhz = 80;
            /* no break */
        case 80:
            freq = RTC_CPU_FREQ_80M;
            break;
    }

    // Wait for UART TX to finish, otherwise some UART output will be lost
    // when switching APB frequency
    uart_tx_wait_idle(CONFIG_CONSOLE_UART_NUM);
    rtc_clk_cpu_freq_set(freq);
}

int main()
{
  InitGPIO();

  InitBKP();
  
  Set_System();
  Set_USBClock();
  USB_Interrupts_Config();
  USB_Init();
  
  
  rtc_init();
  
  /*
  RTC_t date;
  date.year = 2015;
  date.month = 10;
  date.mday = 24;
  
  date.hour = 23;
  date.min = 20;
  date.sec = 0;
  rtc_settime(&date);
  */
  
  // Start Task //
  xTaskCreate(vLcdTask, "vLcdTask", configMINIMAL_STACK_SIZE * 1, NULL, tskIDLE_PRIORITY + 1, &xHandleLcdTask);
  xTaskCreate(vDebugTask, "vDebugTask", configMINIMAL_STACK_SIZE * 1, NULL, tskIDLE_PRIORITY + 1, &xHandleDebugTask);
  
  // Start scheduler //
  osKernelStart(NULL, NULL);
}

void rtc_write(time_t t)
{
    if (! rtc_inited) {
        rtc_init();
    }
    
    // Convert timestamp to struct tm
    struct tm *timeinfo = localtime(&t);

    S_RTC_TIME_DATA_T rtc_datetime;
    
    // Convert S_RTC_TIME_DATA_T to struct tm
    rtc_datetime.u32Year        = timeinfo->tm_year + YEAR0;
    rtc_datetime.u32Month       = timeinfo->tm_mon + 1;
    rtc_datetime.u32Day         = timeinfo->tm_mday;
    rtc_datetime.u32DayOfWeek   = timeinfo->tm_wday;
    rtc_datetime.u32Hour        = timeinfo->tm_hour;
    rtc_datetime.u32Minute      = timeinfo->tm_min;
    rtc_datetime.u32Second      = timeinfo->tm_sec;
    rtc_datetime.u32TimeScale   = RTC_CLOCK_24;
    
    // NOTE: Timing issue with write to RTC registers. This delay is empirical, not rational.
    RTC_SetDateAndTime(&rtc_datetime);
    //nu_nop(6000);
    wait_us(100);
}

/**
 * MCU: Atmega328
 * Fuses: Oscilador interno a 8 Mhz (sin dividir por 8)
 * 		-U lfuse:w:0xe2:m -U hfuse:w:0xd1:m -U efuse:w:0x07:m
 */
int main(void) {
	adc_init();

	timer0_init(timer0_callback);

	i2c_init();

	rtc_init(rtc);
	rtc_sqw_rate(rtc, 1);
	rtc_sqw_enable(rtc);
	rtc_clock_start(rtc);

	eMBInit(MB_RTU, 0x03, 0, 9600, MB_PAR_NONE);
	eMBSetSlaveID(0x3, TRUE, (UCHAR*) "demeter", 8);
	eMBEnable();

	blinkenlight(5, 100);

	parameters_init();

	ports_init();

	f_mount(&fs, "", 0);
	update_log_filename();

	while (1) {
		eMBPoll();
		update_state();

		_delay_ms(100);
	}

	return (0);
}

time_t rtc_read(void)
{
    // NOTE: After boot, RTC time registers are not synced immediately, about 1 sec latency.
    //       RTC time got (through RTC_GetDateAndTime()) in this sec would be last-synced and incorrect.
    //       NUC472/M453: Known issue
    //       M487: Fixed
    if (! rtc_isenabled()) {
        rtc_init();
    }

    S_RTC_TIME_DATA_T rtc_datetime;
    RTC_GetDateAndTime(&rtc_datetime);

    struct tm timeinfo;

    // Convert struct tm to S_RTC_TIME_DATA_T
    timeinfo.tm_year = rtc_datetime.u32Year - YEAR0;
    timeinfo.tm_mon  = rtc_datetime.u32Month - 1;
    timeinfo.tm_mday = rtc_datetime.u32Day;
    timeinfo.tm_wday = rtc_datetime.u32DayOfWeek;
    timeinfo.tm_hour = rtc_datetime.u32Hour;
    if (rtc_datetime.u32TimeScale == RTC_CLOCK_12 && rtc_datetime.u32AmPm == RTC_PM) {
        timeinfo.tm_hour += 12;
    }
    timeinfo.tm_min  = rtc_datetime.u32Minute;
    timeinfo.tm_sec  = rtc_datetime.u32Second;

    // Convert to timestamp
    time_t t;
    if (_rtc_maketime(&timeinfo, &t, RTC_FULL_LEAP_YEAR_SUPPORT) == false) {
        return 0;
    }

    return t;
}

time_t rtc_read(void)
{
    if (! rtc_inited) {
        rtc_init();
    }
    
    S_RTC_TIME_DATA_T rtc_datetime;
    RTC_GetDateAndTime(&rtc_datetime);
    
    struct tm timeinfo;

    // Convert struct tm to S_RTC_TIME_DATA_T
    timeinfo.tm_year = rtc_datetime.u32Year - YEAR0;
    timeinfo.tm_mon  = rtc_datetime.u32Month - 1;
    timeinfo.tm_mday = rtc_datetime.u32Day;
    timeinfo.tm_wday = rtc_datetime.u32DayOfWeek;
    timeinfo.tm_hour = rtc_datetime.u32Hour;
    timeinfo.tm_min  = rtc_datetime.u32Minute;
    timeinfo.tm_sec  = rtc_datetime.u32Second;

    // Convert to timestamp
    time_t t = mktime(&timeinfo);

    return t;
}

void rtc_write(time_t t)
{
    if (! rtc_isenabled()) {
        rtc_init();
    }

    // Convert timestamp to struct tm
    struct tm timeinfo;
    if (_rtc_localtime(t, &timeinfo, RTC_FULL_LEAP_YEAR_SUPPORT) == false) {
        return;
    }

    S_RTC_TIME_DATA_T rtc_datetime;

    // Convert S_RTC_TIME_DATA_T to struct tm
    rtc_datetime.u32Year        = timeinfo.tm_year + YEAR0;
    rtc_datetime.u32Month       = timeinfo.tm_mon + 1;
    rtc_datetime.u32Day         = timeinfo.tm_mday;
    rtc_datetime.u32DayOfWeek   = timeinfo.tm_wday;
    rtc_datetime.u32Hour        = timeinfo.tm_hour;
    rtc_datetime.u32Minute      = timeinfo.tm_min;
    rtc_datetime.u32Second      = timeinfo.tm_sec;
    rtc_datetime.u32TimeScale   = RTC_CLOCK_24;

    // NOTE: Timing issue with write to RTC registers. This delay is empirical, not rational.
    RTC_SetDateAndTime(&rtc_datetime);
    wait_us(100);
}

CuSuite* WindowGetSuite(void)
{
	CuSuite* suite = CuSuiteNew("ui");
  rtc_init();

 
  memlcd_DriverInit();
  GrContextInit(&context, &g_memlcd_Driver);
  window_init(0);
  status_process(EVENT_WINDOW_CREATED, 0, NULL);

  SUITE_ADD_TEST(suite, TestScriptEngine);
  SUITE_ADD_TEST(suite, TestTriagle);
  SUITE_ADD_TEST(suite, TestWideFont);

  SUITE_ADD_TEST(suite, TestSportWatch);
  SUITE_ADD_TEST(suite, TestTestButton);
  SUITE_ADD_TEST(suite, TestTestLight);
  SUITE_ADD_TEST(suite, TestTestLcd);
  SUITE_ADD_TEST(suite, TestPhoneScreen);
  SUITE_ADD_TEST(suite, TestNotification);
  SUITE_ADD_TEST(suite, TestControl);
  SUITE_ADD_TEST(suite, TestWelcome);
  SUITE_ADD_TEST(suite, TestBtConfig);
  SUITE_ADD_TEST(suite, TestFontConfig);

  SUITE_ADD_TEST(suite, TestSleep);

  SUITE_ADD_TEST(suite, TestWindows);
  SUITE_ADD_TEST(suite, SimluateRun);

  return suite;
}

kmain() {
	terminal_init();

	setup_IDT_entry (&idt[0x08], 0x08, (dword)&_int_08_hand, ACS_INT, 0);
	setup_IDT_entry (&idt[0x09], 0x08, (dword)&_int_09_hand, ACS_INT, 0);
	setup_IDT_entry (&idt[0x74], 0x08, (dword)&_int_74_hand, ACS_INT, 0);
	setup_IDT_entry (&idt[0x80], 0x08, (dword)&_int_80_hand, ACS_INT, 0);
	

	/* IDTR Setting */ 

	idtr.base = 0;  
	idtr.base +=(dword) &idt;
	idtr.limit = sizeof(idt)-1;
	
	_lidt(&idtr);

	/* Interrupt unmasking */
	
	_cli();

	_maskPIC1(0xF8);           /*0XF8*/
	_maskPIC2(0xEF);		/*0XEF*/
	
	_sti();

	video_init();
	timertick_init();
	rtc_init();
	mouse_init();
	shell_run();
}

int
rtc_get(struct rtc_time *tmp)
{
	int rel = 0;
	struct ds1302_st bbclk;

	if(!ds1302_initted) rtc_init();

	read_ser_drv(0xbe,(unsigned char *)&bbclk, 8);      /* read burst */

	if (bbclk.CH) {
		printf("ds1302: rtc_get: Clock was halted, clock probably "
			"corrupt\n");
		rel = -1;
	}

	tmp->tm_sec=10*bbclk.sec10+bbclk.sec;
	tmp->tm_min=10*bbclk.min10+bbclk.min;
	tmp->tm_hour=10*bbclk.hr10+bbclk.hr;
	tmp->tm_wday=bbclk.day;
	tmp->tm_mday=10*bbclk.date10+bbclk.date;
	tmp->tm_mon=10*bbclk.month10+bbclk.month;
	tmp->tm_year=10*bbclk.year10+bbclk.year + 1900;

	tmp->tm_yday = 0;
	tmp->tm_isdst= 0;

	DPRINTF("Get DATE: %4d-%02d-%02d (wday=%d)  TIME: %2d:%02d:%02d\n",
		tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
		tmp->tm_hour, tmp->tm_min, tmp->tm_sec );

	return rel;
}

static int setupHardware( void )
{
	// When using the JTAG debugger the hardware is not always initialised to
	// the correct default state.  This line just ensures that this does not
	// cause all interrupts to be masked at the start.
	AT91C_BASE_AIC->AIC_EOICR = 0;

	// Enable the peripheral clock.
	AT91F_PMC_EnablePeriphClock( AT91C_BASE_PMC, (1 << AT91C_ID_PIOA) |  //Enable Clock for PIO
												(1 << AT91C_ID_IRQ0) |  //Enable Clock for IRQ0
												(1 << AT91C_ID_PWMC) |	//Enable Clock for the PWM controller
												(1 << AT91C_ID_US0)  |  //USART0
												(1 << AT91C_ID_US1)		//USART1
							  );


	// Enable reset-button
	AT91F_RSTSetMode( AT91C_BASE_RSTC , AT91C_RSTC_URSTEN );

	if (!initUsart()) return 0;
	if (!vInitUSBInterface()) return 0;

	init_serial();

	rtc_init();

	InitLoggerHardware();
	return 1;
 }