2022-03-13 17:13:40 +00:00
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/*
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xsns_56_rtc_chips.ino - RTC chip support for Tasmota
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SPDX-FileCopyrightText: 2022 Theo Arends
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SPDX-License-Identifier: GPL-3.0-only
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*/
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#ifdef USE_I2C
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#ifdef USE_RTC_CHIPS
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/*********************************************************************************************\
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* RTC chip support
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\*********************************************************************************************/
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#define XDRV_56 56
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#ifdef USE_GPS // GPS driver has it's own NTP server
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#undef RTC_NTP_SERVER // Disable NTP server (+0k8 code)
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#endif
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struct {
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uint32_t (* ReadTime)(void);
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void (* SetTime)(uint32_t);
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2022-04-16 16:43:10 +01:00
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int32_t (* MemRead)(uint8_t *, uint32_t);
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int32_t (* MemWrite)(uint8_t *, uint32_t);
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2022-03-13 17:13:40 +00:00
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bool detected;
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2022-04-16 16:43:10 +01:00
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int8_t mem_size = -1;
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2022-03-13 17:13:40 +00:00
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uint8_t address;
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uint8_t bus;
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char name[10];
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} RtcChip;
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/*********************************************************************************************\
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* DS1307 and DS3231
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*
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* I2C Address: 0x68
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\*********************************************************************************************/
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#ifdef USE_DS3231
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#define XI2C_26 26 // See I2CDEVICES.md
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#define DS3231_ADDRESS 0x68 // DS3231 I2C Address
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// DS3231 Register Addresses
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#define DS3231_SECONDS 0x00
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#define DS3231_MINUTES 0x01
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#define DS3231_HOURS 0x02
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#define DS3231_DAY 0x03
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#define DS3231_DATE 0x04
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#define DS3231_MONTH 0x05
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#define DS3231_YEAR 0x06
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#define DS3231_CONTROL 0x0E
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#define DS3231_STATUS 0x0F
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// Control register bits
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#define DS3231_OSF 7
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#define DS3231_EOSC 7
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#define DS3231_BBSQW 6
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#define DS3231_CONV 5
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#define DS3231_RS2 4
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#define DS3231_RS1 3
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#define DS3231_INTCN 2
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//Other
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#define DS3231_HR1224 6 // Hours register 12 or 24 hour mode (24 hour mode==0)
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#define DS3231_CENTURY 7 // Century bit in Month register
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#define DS3231_DYDT 6 // Day/Date flag bit in alarm Day/Date registers
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/*-------------------------------------------------------------------------------------------*\
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* Read time from DS3231 and return the epoch time (second since 1-1-1970 00:00)
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\*-------------------------------------------------------------------------------------------*/
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uint32_t DS3231ReadTime(void) {
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TIME_T tm;
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tm.second = Bcd2Dec(I2cRead8(RtcChip.address, DS3231_SECONDS));
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tm.minute = Bcd2Dec(I2cRead8(RtcChip.address, DS3231_MINUTES));
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tm.hour = Bcd2Dec(I2cRead8(RtcChip.address, DS3231_HOURS) & ~_BV(DS3231_HR1224)); // Assumes 24hr clock
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tm.day_of_week = I2cRead8(RtcChip.address, DS3231_DAY);
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tm.day_of_month = Bcd2Dec(I2cRead8(RtcChip.address, DS3231_DATE));
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tm.month = Bcd2Dec(I2cRead8(RtcChip.address, DS3231_MONTH) & ~_BV(DS3231_CENTURY)); // Don't use the Century bit
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tm.year = Bcd2Dec(I2cRead8(RtcChip.address, DS3231_YEAR));
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return MakeTime(tm);
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}
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/*-------------------------------------------------------------------------------------------*\
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* Get time as TIME_T and set the DS3231 time to this value
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\*-------------------------------------------------------------------------------------------*/
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void DS3231SetTime(uint32_t epoch_time) {
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TIME_T tm;
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BreakTime(epoch_time, tm);
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I2cWrite8(RtcChip.address, DS3231_SECONDS, Dec2Bcd(tm.second));
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I2cWrite8(RtcChip.address, DS3231_MINUTES, Dec2Bcd(tm.minute));
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I2cWrite8(RtcChip.address, DS3231_HOURS, Dec2Bcd(tm.hour));
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I2cWrite8(RtcChip.address, DS3231_DAY, tm.day_of_week);
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I2cWrite8(RtcChip.address, DS3231_DATE, Dec2Bcd(tm.day_of_month));
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I2cWrite8(RtcChip.address, DS3231_MONTH, Dec2Bcd(tm.month));
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I2cWrite8(RtcChip.address, DS3231_YEAR, Dec2Bcd(tm.year));
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I2cWrite8(RtcChip.address, DS3231_STATUS, I2cRead8(RtcChip.address, DS3231_STATUS) & ~_BV(DS3231_OSF)); // Clear the Oscillator Stop Flag
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}
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2022-04-16 16:43:10 +01:00
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/*-------------------------------------------------------------------------------------------*\
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* Detection
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\*-------------------------------------------------------------------------------------------*/
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2022-03-13 17:13:40 +00:00
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void DS3231Detected(void) {
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if (!RtcChip.detected && I2cEnabled(XI2C_26)) {
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RtcChip.address = DS3231_ADDRESS;
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if (I2cSetDevice(RtcChip.address)) {
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if (I2cValidRead(RtcChip.address, DS3231_STATUS, 1)) {
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RtcChip.detected = 1;
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strcpy_P(RtcChip.name, PSTR("DS3231"));
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RtcChip.ReadTime = &DS3231ReadTime;
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RtcChip.SetTime = &DS3231SetTime;
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2022-04-16 16:43:10 +01:00
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RtcChip.mem_size = -1;
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2022-03-13 17:13:40 +00:00
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}
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}
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}
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}
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#endif // USE_DS3231
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/*********************************************************************************************\
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* BM8563 - Real Time Clock
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*
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* I2C Address: 0x51 (Fixed in library as BM8563_ADRESS)
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\*********************************************************************************************/
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#ifdef USE_BM8563
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#define XI2C_59 59 // See I2CDEVICES.md
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#include "BM8563.h"
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struct {
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BM8563 Rtc;
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bool rtc_ready = false;
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bool ntp_time_ok = false;
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} bm8563_driver;
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uint32_t BM8563GetUtc(void) {
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RTC_TimeTypeDef RTCtime;
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// 1. read has errors ???
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bm8563_driver.Rtc.GetTime(&RTCtime);
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// core2_globs.Rtc.GetTime(&RTCtime);
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RTC_DateTypeDef RTCdate;
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bm8563_driver.Rtc.GetDate(&RTCdate);
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TIME_T tm;
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tm.second = RTCtime.Seconds;
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tm.minute = RTCtime.Minutes;
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tm.hour = RTCtime.Hours;
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tm.day_of_week = RTCdate.WeekDay;
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tm.day_of_month = RTCdate.Date;
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tm.month = RTCdate.Month;
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tm.year = RTCdate.Year - 1970;
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return MakeTime(tm);
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}
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void BM8563SetUtc(uint32_t epoch_time) {
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TIME_T tm;
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BreakTime(epoch_time, tm);
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RTC_TimeTypeDef RTCtime;
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RTCtime.Hours = tm.hour;
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RTCtime.Minutes = tm.minute;
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RTCtime.Seconds = tm.second;
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bm8563_driver.Rtc.SetTime(&RTCtime);
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RTC_DateTypeDef RTCdate;
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RTCdate.WeekDay = tm.day_of_week;
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RTCdate.Month = tm.month;
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RTCdate.Date = tm.day_of_month;
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RTCdate.Year = tm.year + 1970;
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bm8563_driver.Rtc.SetDate(&RTCdate);
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}
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2022-04-16 16:43:10 +01:00
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/*-------------------------------------------------------------------------------------------*\
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* Detection
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\*-------------------------------------------------------------------------------------------*/
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2022-03-13 17:13:40 +00:00
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void BM8563Detected(void) {
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if (!RtcChip.detected && I2cEnabled(XI2C_59)) {
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RtcChip.address = BM8563_ADRESS;
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if (I2cSetDevice(RtcChip.address, 0)) {
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RtcChip.detected = 1;
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}
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#ifdef ESP32
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else if (I2cSetDevice(RtcChip.address, 1)) {
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RtcChip.detected = 1;
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RtcChip.bus = 1;
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bm8563_driver.Rtc.setBus(1); // switch to bus 1
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}
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#endif
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if (RtcChip.detected) {
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bm8563_driver.Rtc.begin();
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strcpy_P(RtcChip.name, PSTR("BM8563"));
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RtcChip.ReadTime = &BM8563GetUtc;
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RtcChip.SetTime = &BM8563SetUtc;
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2022-04-16 16:43:10 +01:00
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RtcChip.mem_size = -1;
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2022-03-13 17:13:40 +00:00
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}
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}
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}
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#endif // USE_BM8563
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/*********************************************************************************************\
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* PCF85363 support
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*
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* I2C Address: 0x51
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\*********************************************************************************************/
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#ifdef USE_PCF85363
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#define XI2C_66 66 // See I2CDEVICES.md
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#define PCF85363_ADDRESS 0x51 // PCF85363 I2C Address
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/*-------------------------------------------------------------------------------------------*\
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* Read time and return the epoch time (second since 1-1-1970 00:00)
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\*-------------------------------------------------------------------------------------------*/
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uint32_t Pcf85363ReadTime(void) {
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Wire.beginTransmission(RtcChip.address);
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Wire.write(0x00);
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Wire.endTransmission();
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uint8_t buffer[8];
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Wire.requestFrom(RtcChip.address, (uint8_t)8);
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for (uint32_t i = 0; i < 8; i++) { buffer[i] = Wire.read(); }
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Wire.endTransmission();
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TIME_T tm;
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tm.second = Bcd2Dec(buffer[1] & 0x7F);
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tm.minute = Bcd2Dec(buffer[2] & 0x7F);
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tm.hour = Bcd2Dec(buffer[3]);
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tm.day_of_month = Bcd2Dec(buffer[4]);
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tm.day_of_week = buffer[5];
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tm.month = Bcd2Dec(buffer[6]);
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tm.year = 30 + Bcd2Dec(buffer[7]); // Offset from 1970. So 2022 - 1970 = 52
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return MakeTime(tm);
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}
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/*-------------------------------------------------------------------------------------------*\
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* Get time as TIME_T and set time to this value
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\*-------------------------------------------------------------------------------------------*/
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void Pcf85363SetTime(uint32_t epoch_time) {
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TIME_T tm;
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BreakTime(epoch_time, tm);
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uint8_t buffer[8];
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buffer[0] = 0x00; // 100th_seconds (not used)
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buffer[1] = Dec2Bcd(tm.second);
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buffer[2] = Dec2Bcd(tm.minute);
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buffer[3] = Dec2Bcd(tm.hour);
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buffer[4] = Dec2Bcd(tm.day_of_month);
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buffer[5] = tm.day_of_week;
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buffer[6] = Dec2Bcd(tm.month);
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buffer[7] = Dec2Bcd(tm.year -30); // Offset from 1970
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/*
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// Handbook page 13
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Wire.beginTransmission(RtcChip.address);
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Wire.write(0x2E);
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Wire.write(0x01); // Set stop
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Wire.write(0xA4); // Clear prescaler
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for (uint32_t i = 0; i < 8; i++) { Wire.write(buffer[i]); }
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Wire.endTransmission();
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Wire.beginTransmission(RtcChip.address);
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Wire.write(0x2E);
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Wire.write(0x00); // Set start
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Wire.endTransmission();
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*/
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Wire.beginTransmission(RtcChip.address);
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Wire.write(0x00);
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for (uint32_t i = 0; i < 8; i++) { Wire.write(buffer[i]); }
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Wire.endTransmission();
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}
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/*-------------------------------------------------------------------------------------------*\
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* Dump all registers
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\*-------------------------------------------------------------------------------------------*/
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/*
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void Pcf85363Dump(void) {
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uint8_t buffer[64];
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// 0x00 to 0x2F
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Wire.beginTransmission(RtcChip.address);
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Wire.write(0x00);
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Wire.endTransmission();
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Wire.requestFrom(RtcChip.address, (uint8_t)48);
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for (uint32_t i = 0; i < 48; i++) {
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buffer[i] = Wire.read();
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}
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Wire.endTransmission();
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AddLog(LOG_LEVEL_DEBUG, PSTR("P85: Read 0x00: %48_H"), buffer);
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// 0x40 to 0x7F
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Wire.beginTransmission(RtcChip.address);
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Wire.write(0x40);
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Wire.endTransmission();
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Wire.requestFrom(RtcChip.address, (uint8_t)64);
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for (uint32_t i = 0; i < 64; i++) {
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buffer[i] = Wire.read();
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}
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Wire.endTransmission();
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AddLog(LOG_LEVEL_DEBUG, PSTR("P85: Read 0x40: %64_H"), buffer);
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}
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*/
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2022-04-16 16:43:10 +01:00
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/*-------------------------------------------------------------------------------------------*\
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* Memory block functions
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\*-------------------------------------------------------------------------------------------*/
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int32_t Pcf8563MemRead(uint8_t *buffer, uint32_t size) {
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return I2cReadBuffer(RtcChip.address, 0x40, buffer, size);
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}
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int32_t Pcf8563MemWrite(uint8_t *buffer, uint32_t size) {
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return I2cWriteBuffer(RtcChip.address, 0x40, (uint8_t *)buffer, size);
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}
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/*-------------------------------------------------------------------------------------------*\
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* Detection
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\*-------------------------------------------------------------------------------------------*/
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2022-03-13 17:13:40 +00:00
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void Pcf85363Detected(void) {
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if (!RtcChip.detected && I2cEnabled(XI2C_66)) {
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RtcChip.address = PCF85363_ADDRESS;
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if (I2cSetDevice(RtcChip.address)) {
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RtcChip.detected = 1;
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strcpy_P(RtcChip.name, PSTR("PCF85363"));
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RtcChip.ReadTime = &Pcf85363ReadTime;
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RtcChip.SetTime = &Pcf85363SetTime;
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2022-04-16 16:43:10 +01:00
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RtcChip.mem_size = 64;
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RtcChip.MemRead = &Pcf8563MemRead;
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RtcChip.MemWrite = &Pcf8563MemWrite;
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2022-03-13 17:13:40 +00:00
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}
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}
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}
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#endif // USE_PCF85363
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/*********************************************************************************************\
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* RTC Detect and time set
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\*********************************************************************************************/
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void RtcChipDetect(void) {
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RtcChip.detected = 0;
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RtcChip.bus = 0;
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#ifdef USE_DS3231
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DS3231Detected();
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#endif // USE_DS3231
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#ifdef USE_BM8563
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BM8563Detected();
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#endif // USE_BM8563
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#ifdef USE_PCF85363
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Pcf85363Detected();
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#endif // USE_PCF85363
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if (!RtcChip.detected) { return; }
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I2cSetActiveFound(RtcChip.address, RtcChip.name, RtcChip.bus);
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if (Rtc.utc_time < START_VALID_TIME) { // Not sync with NTP/GPS (time not valid), so read time
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uint32_t time = RtcChip.ReadTime(); // Read UTC TIME
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if (time > START_VALID_TIME) {
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Rtc.utc_time = time;
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RtcSync(RtcChip.name);
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}
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}
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}
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void RtcChipTimeSynced(void) {
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if ((Rtc.utc_time > START_VALID_TIME) && // Valid UTC time
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(abs((int32_t)(Rtc.utc_time - RtcChip.ReadTime())) > 2)) { // Time has drifted from RTC more than 2 seconds
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RtcChip.SetTime(Rtc.utc_time); // Update time
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AddLog(LOG_LEVEL_DEBUG, PSTR("RTC: %s re-synced (" D_UTC_TIME ") %s"), RtcChip.name, GetDateAndTime(DT_UTC).c_str());
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}
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}
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2022-04-16 16:43:10 +01:00
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int32_t RtcChipMemSize(void) {
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return RtcChip.mem_size; // Not supported or max size
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}
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int32_t RtcChipMemRead(uint8_t *buffer, uint32_t size) {
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if (size <= RtcChip.mem_size) {
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return RtcChip.MemRead(buffer, size);
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}
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return -1; // Not supported or too large
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}
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|
int32_t RtcChipMemWrite(uint8_t *buffer, uint32_t size) {
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if (size <= RtcChip.mem_size) {
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return RtcChip.MemWrite(buffer, size);
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}
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return -1; // Not supported or too large
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}
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|
2022-03-13 17:13:40 +00:00
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|
|
/*********************************************************************************************\
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|
* NTP server functions
|
|
|
|
\*********************************************************************************************/
|
|
|
|
#ifdef RTC_NTP_SERVER
|
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|
|
|
#include "NTPServer.h"
|
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|
|
#include "NTPPacket.h"
|
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|
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|
|
|
#define NTP_MILLIS_OFFSET 50
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|
|
|
|
|
const char kRtcChipCommands[] PROGMEM = "Rtc|" // Prefix
|
|
|
|
D_CMND_NTPSERVER;
|
|
|
|
|
|
|
|
void (* const RtcChipCommand[])(void) PROGMEM = {
|
|
|
|
&CmndRtcNtpServer };
|
|
|
|
|
|
|
|
NtpServer RtcChipTimeServer(PortUdp);
|
|
|
|
|
|
|
|
void RtcChipEverySecond(void) {
|
|
|
|
static bool ntp_server_started = false;
|
|
|
|
|
|
|
|
if (Settings->sbflag1.local_ntp_server && (Rtc.utc_time > START_VALID_TIME)) {
|
|
|
|
if (!ntp_server_started) {
|
|
|
|
if (RtcChipTimeServer.beginListening()) {
|
|
|
|
ntp_server_started = true;
|
|
|
|
AddLog(LOG_LEVEL_DEBUG, PSTR("RTC: NTP server started"));
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
RtcChipTimeServer.processOneRequest(Rtc.utc_time, NTP_MILLIS_OFFSET);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
void CmndRtcNtpServer(void) {
|
|
|
|
// RtcChipNtpServer 0 or 1
|
|
|
|
if (XdrvMailbox.payload >= 0) {
|
|
|
|
Settings->sbflag1.local_ntp_server = 0;
|
|
|
|
if ((XdrvMailbox.payload &1) && RtcChipTimeServer.beginListening()) {
|
|
|
|
Settings->sbflag1.local_ntp_server = 1;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
ResponseCmndStateText(Settings->sbflag1.local_ntp_server);
|
|
|
|
}
|
|
|
|
#endif // RTC_NTP_SERVER
|
|
|
|
|
|
|
|
/*********************************************************************************************\
|
|
|
|
* Interface
|
|
|
|
\*********************************************************************************************/
|
|
|
|
|
2022-11-11 09:44:56 +00:00
|
|
|
bool Xdrv56(uint32_t function) {
|
2022-03-13 17:13:40 +00:00
|
|
|
bool result = false;
|
|
|
|
|
|
|
|
#ifdef RTC_NTP_SERVER
|
|
|
|
switch (function) {
|
|
|
|
case FUNC_EVERY_SECOND:
|
|
|
|
RtcChipEverySecond();
|
|
|
|
break;
|
|
|
|
case FUNC_COMMAND:
|
|
|
|
result = DecodeCommand(kRtcChipCommands, RtcChipCommand);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
#endif // RTC_NTP_SERVER
|
|
|
|
|
2022-08-18 14:41:35 +01:00
|
|
|
if (FUNC_I2C_INIT == function) {
|
2022-03-13 17:13:40 +00:00
|
|
|
RtcChipDetect();
|
|
|
|
}
|
|
|
|
else if (RtcChip.detected) {
|
|
|
|
switch (function) {
|
|
|
|
case FUNC_TIME_SYNCED:
|
|
|
|
RtcChipTimeSynced();
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
|
|
|
|
#endif // USE_RTC_CHIPS
|
|
|
|
#endif // USE_I2C
|