/*
?*?ds1302.c:
?*	Real?Time?clock
?*
?*?Copyright?（c）?2013?Gordon?Henderson.
?***********************************************************************
?*?This?file?is?part?of?wiringPi:
?*	https://projects.drogon.net/raspberry-pi/wiringpi/
?*
?*????wiringPi?is?free?software:?you?can?redistribute?it?and/or?modify
?*????it?under?the?terms?of?the?GNU?Lesser?General?Public?License?as?published?by
?*????the?Free?Software?Foundation?either?version?3?of?the?License?or
?*????（at?your?option）?any?later?version.
?*
?*????wiringPi?is?distributed?in?the?hope?that?it?will?be?useful
?*????but?WITHOUT?ANY?WARRANTY;?without?even?the?implied?warranty?of
?*????MERCHANTABILITY?or?FITNESS?FOR?A?PARTICULAR?PURPOSE.??See?the
?*????GNU?Lesser?General?Public?License?for?more?details.
?*
?*????You?should?have?received?a?copy?of?the?GNU?Lesser?General?Public?License
?*????along?with?wiringPi.??If?not?see?.
?***********************************************************************
?*/

#include?
#include?
#include?
#include?

#include?

#include?“ds1302.h“

//?Register?defines

#define	RTC_SECS	?0
#define	RTC_MINS	?1
#define	RTC_HOURS	?2
#define	RTC_DATE	?3
#define	RTC_MONTH	?4
#define	RTC_DAY		?5
#define	RTC_YEAR	?6
#define	RTC_WP		?7
#define	RTC_TC		?8
#define	RTC_BM		31


//?Locals

static?int?dPin?cPin?sPin?;

/*
?*?dsShiftIn:
?*	Shift?a?number?in?from?the?chip?LSB?first.?Note?that?the?data?is
?*	sampled?on?the?trailing?edge?of?the?last?clock?so?it‘s?valid?immediately.
?*********************************************************************************
?*/

static?unsigned?int?dsShiftIn?（void）
{
??uint8_t?value?=?0?;
??int?i?;

??pinMode?（dPin?INPUT）?;	delayMicroseconds?（1）?;

??for?（i?=?0?;?i???{
????value?|=?（digitalRead?（dPin）?<????digitalWrite?（cPin?HIGH）?;?delayMicroseconds?（1）?;
????digitalWrite?（cPin?LOW）?;	delayMicroseconds?（1）?;
??}

??return?value;
}


/*
?*?dsShiftOut:
?*	A?normal?LSB-first?shift-out?just?slowed?down?a?bit?-?the?Pi?is
?*	a?bit?faster?than?the?chip?can?handle.
?*********************************************************************************
?*/

static?void?dsShiftOut?（unsigned?int?data）
{
??int?i?;

??pinMode?（dPin?OUTPUT）?;

??for?（i?=?0?;?i???{
????digitalWrite?（dPin?data?&?（1?<????digitalWrite?（cPin?HIGH）?;			delayMicroseconds?（1）?;
????digitalWrite?（cPin?LOW）?;			delayMicroseconds?（1）?;
??}
}


/*
?*?ds1302regRead:?ds1302regWrite:
?*	Read/Write?a?value?to?an?RTC?Register?or?RAM?location?on?the?chip
?*********************************************************************************
?*/

static?unsigned?int?ds1302regRead?（const?int?reg）
{
??unsigned?int?data?;

??digitalWrite?（sPin?HIGH）?;?delayMicroseconds?（1）?;
????dsShiftOut?（reg）?;
????data?=?dsShiftIn?（）?;
??digitalWrite?（sPin?LOW）??;?delayMicroseconds?（1）?;

??return?data?;
}

static?void?ds1302regWrite?（const?int?reg?const?unsign

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----

?????文件????????266??2018-07-09?19:26??WiringPi\.git\config

?????文件?????????73??2018-07-09?19:25??WiringPi\.git\description

?????文件?????????23??2018-07-09?19:26??WiringPi\.git\HEAD

?????文件????????478??2018-07-09?19:25??WiringPi\.git\hooks\applypatch-msg.sample

?????文件????????896??2018-07-09?19:25??WiringPi\.git\hooks\commit-msg.sample

?????文件????????189??2018-07-09?19:25??WiringPi\.git\hooks\post-update.sample

?????文件????????424??2018-07-09?19:25??WiringPi\.git\hooks\pre-applypatch.sample

?????文件???????1642??2018-07-09?19:25??WiringPi\.git\hooks\pre-commit.sample

?????文件???????1348??2018-07-09?19:25??WiringPi\.git\hooks\pre-push.sample

?????文件???????4898??2018-07-09?19:25??WiringPi\.git\hooks\pre-rebase.sample

?????文件???????1239??2018-07-09?19:25??WiringPi\.git\hooks\prepare-commit-msg.sample

?????文件???????3610??2018-07-09?19:25??WiringPi\.git\hooks\update.sample

?????文件??????17930??2018-07-09?19:26??WiringPi\.git\index

?????文件????????240??2018-07-09?19:25??WiringPi\.git\info\exclude

?????文件????????192??2018-07-09?19:26??WiringPi\.git\logs\HEAD

?????文件????????192??2018-07-09?19:26??WiringPi\.git\logs\refs\heads\master

?????文件????????192??2018-07-09?19:26??WiringPi\.git\logs\refs\remotes\origin\HEAD

?????文件??????38424??2018-07-09?19:26??WiringPi\.git\objects\pack\pack-650abf54ef6c2191225a8b7476bc358c7e2475f3.idx

?????文件?????719285??2018-07-09?19:26??WiringPi\.git\objects\pack\pack-650abf54ef6c2191225a8b7476bc358c7e2475f3.pack

?????文件????????107??2018-07-09?19:26??WiringPi\.git\packed-refs

?????文件?????????41??2018-07-09?19:26??WiringPi\.git\refs\heads\master

?????文件?????????32??2018-07-09?19:26??WiringPi\.git\refs\remotes\origin\HEAD

?????文件?????????88??2018-07-09?19:26??WiringPi\.gitignore

?????文件?????????67??2018-07-09?20:01??WiringPi\.vscode\settings.json

?????文件???????5162??2018-07-09?19:26??WiringPi\build

?????文件???????7651??2018-07-09?19:26??WiringPi\COPYING.LESSER

?????文件????????116??2018-07-09?19:26??WiringPi\debian\.gitignore

?????文件????????191??2018-07-09?19:26??WiringPi\debian\changelog

?????文件??????????2??2018-07-09?19:26??WiringPi\debian\compat

?????文件????????909??2018-07-09?19:26??WiringPi\debian\control

............此處省略232個(gè)文件信息