Mouse code for the MacroRat
Diff: mbed-dev/targets/TARGET_NUVOTON/TARGET_M451/rtc_api.c
- Revision:
- 18:6a4db94011d3
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-dev/targets/TARGET_NUVOTON/TARGET_M451/rtc_api.c Sun May 14 23:18:57 2017 +0000 @@ -0,0 +1,121 @@ +/* mbed Microcontroller Library + * Copyright (c) 2015-2016 Nuvoton + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include "rtc_api.h" + +#if DEVICE_RTC + +#include "mbed_wait_api.h" +#include "mbed_error.h" +#include "nu_modutil.h" +#include "nu_miscutil.h" + +#define YEAR0 1900 +//#define EPOCH_YR 1970 +static int rtc_inited = 0; + +static const struct nu_modinit_s rtc_modinit = {RTC_0, RTC_MODULE, 0, 0, 0, RTC_IRQn, NULL}; + +void rtc_init(void) +{ + if (rtc_inited) { + return; + } + rtc_inited = 1; + + // Enable IP clock + CLK_EnableModuleClock(rtc_modinit.clkidx); + + RTC_Open(NULL); +} + +void rtc_free(void) +{ + // FIXME +} + +int rtc_isenabled(void) +{ + return rtc_inited; +} + +/* + struct tm + tm_sec seconds after the minute 0-61 + tm_min minutes after the hour 0-59 + tm_hour hours since midnight 0-23 + tm_mday day of the month 1-31 + tm_mon months since January 0-11 + tm_year years since 1900 + tm_wday days since Sunday 0-6 + tm_yday days since January 1 0-365 + tm_isdst Daylight Saving Time flag +*/ + +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_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); +} + +#endif