实验效果
5 y8 p* V: M/ y( t1 hLCD屏幕显示 年月日时分秒 设置任意时间 到时间蜂鸣器启动
( T8 ?1 b1 A- X& g" t$ |! \' \; m: Y$ l- b# _2 C
主函数
R1 r0 P. `0 |: d0 G- 简单说 就是初始化各个部件' v5 {& U1 M* y: D. M5 m. H
- 然后让LED1 闪烁来提示系统的正常运行+ \" T3 u; W! k4 G$ s
- 显示屏显示实时时间
' b) T% \: T# g - #include "led.h"3 {8 R1 h" {8 w; Q: ?
- #include "delay.h"4 O' Z, _ @0 m7 Y; S( Q
- #include "key.h"6 \( ?: g0 g% Y4 r( k5 M
- #include "sys.h"1 Q7 S; U9 }( V: V5 v
- #include "lcd.h") v/ _% {- h$ q( m
- #include "usart.h" 4 x: G6 i; j7 t; E: m6 d
- #include "usmart.h"
! Z+ _0 a4 O8 s1 Y5 u - #include "rtc.h"
8 ]# z# Y% _! U - #include "oled.h", `; ?3 ^9 ~ I& t; a
- #include "beep.h"
# w* |- o; T, r( i; I3 U( I( W4 O - / b7 ]8 g) b$ I/ x
- int main(void)5 h1 J. w- s+ M
- { 1 b0 p) c4 ~2 u8 V. }5 |) F
- u8 t=0; , ?: F& r' {1 |' ]
- delay_init();
. W! g: f3 z% d3 }8 C( o9 s - NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
0 S* C$ e: W$ b8 s% \, P2 D/ m1 ? - uart_init(115200); //% E+ D) n5 o2 l Z" e! ?
- LED_Init(); //' o0 A0 X$ H0 }1 i" G
- LCD_Init(); s$ ^1 Y7 D" W
- OLED_Init(); //
9 `& l) B" e+ |1 `- I" N- \6 q( R, T - OLED_Clear(); ( v" q/ H2 @" C7 k, e. i3 T& u) K
- usmart_dev.init(SystemCoreClock/1000000); //. J2 A4 C- p! `8 Z, i( u* r% L
- BEEP_Init(); & t# e' k) h8 t! ]7 a+ ^
- RTC_Init(); //, u' D# y2 e& Z1 C6 x. u% ^
- POINT_COLOR=RED;//
7 @7 M! O$ z) j6 t - LCD_ShowString(60,50,200,16,16,"Elite STM32");
! n: }% k3 }% P' N - LCD_ShowString(60,70,200,16,16,"RTC TEST");
& ?- N6 V& X y - LCD_ShowString(60,90,200,16,16,"ATOM@ALIENTEK");
* c' C8 w9 Q# {& W; t1 j% ^ - LCD_ShowString(60,110,200,16,16,"2015/1/14"); " e) {; ]5 q# H; k+ ]7 U! B: n
- //ÏÔʾʱ¼ä5 Q& ~. g, ?# f2 b
- POINT_COLOR=BLUE;//+ Y, G {9 i0 N/ s: C6 k4 }2 ?
- LCD_ShowString(60,130,200,16,16," - - ");
9 }3 y& l8 b3 O$ e' v+ F* { - LCD_ShowString(60,162,200,16,16," : : "); ) e4 \8 R2 r) V
- while(1)
" M$ J# a3 ^ h! y8 [% s - {
: o1 _6 O& s3 d; a J - if(t!=calendar.sec)4 o$ Z/ s0 l0 m
- {
# Y+ R9 ~0 _) J2 c! Z - t=calendar.sec;
! H- s; h1 D/ h4 S f3 F - //LCD_ShowNum(60,130,calendar.w_year,4,16);
) Q+ A! ^8 l4 B* ? - OLED_ShowNum(0,2,calendar.w_year,4,16); " A1 ~+ A: D F+ [8 _* V
- //LCD_ShowNum(100,130,calendar.w_month,2,16); g6 T R2 v/ i7 a0 I9 S
- OLED_ShowNum(0,4,calendar.w_month,2,16);
: D; \: Z$ b3 q1 ^/ @" F6 [0 N - //LCD_ShowNum(124,130,calendar.w_date,2,16);
: b% q2 F! i& C: b. D; z ` - OLED_ShowNum(0,6,calendar.w_date,2,16); $ |' |3 T7 e* \( B% J
- switch(calendar.week)4 X. o# X6 o. Z4 X
- {& H: | n" a/ }, m4 X# p% k6 H2 V
- case 0:
1 [/ J' R# C7 O8 \. e, J5 o - LCD_ShowString(60,148,200,16,16,"Sunday ");
" U, `3 ~: p: { - break;
4 y: B, D5 ?9 |. u7 h - case 1:
, Q2 ^( S' S3 `9 k, I - LCD_ShowString(60,148,200,16,16,"Monday ");- r: @) `. r3 q) S/ S
- break;. O+ c6 t) ]% m4 ] [# T
- case 2: _3 G# L H& W3 Y" q: M0 s
- LCD_ShowString(60,148,200,16,16,"Tuesday ");0 p4 Z; z4 d+ @: }2 b7 I( v
- break;# T( T K' F! N: B7 a
- case 3:; N1 M; V* o% L: S
- LCD_ShowString(60,148,200,16,16,"Wednesday");" m0 K" C& z9 j9 T( v% c
- break;' k# {. y) H& M8 x
- case 4:
3 x/ _ }6 H* _2 s - LCD_ShowString(60,148,200,16,16,"Thursday ");
8 K: H. T+ |: g* C ` - break;7 { L* }' C5 E4 \
- case 5:
" a7 f9 S+ j5 K {) _ - LCD_ShowString(60,148,200,16,16,"Friday ");1 M7 N& l# h! m* E& W8 S7 @
- break;) j# ]& l3 H! N4 Q: h& I# C
- case 6:
7 m1 y+ d$ l1 Z) A G& _1 A - LCD_ShowString(60,148,200,16,16,"Saturday ");( ?- S. P$ D1 F+ n m
- break; 3 z3 S/ T3 Q ?& N; [3 u& M
- }7 f6 C6 r& y E1 L0 ~
- LCD_ShowNum(60,162,calendar.hour,2,16);
$ S8 _7 z' u/ i. M- Y9 n - LCD_ShowNum(84,162,calendar.min,2,16); . y `& W( x4 @8 s1 R) L
- LCD_ShowNum(108,162,calendar.sec,2,16);
7 E% Y: u1 t; w! ?$ B! R+ n - LED0=!LED0;6 n$ x+ K% d+ F8 L+ U% C5 Z) V& ^
- } $ V2 F7 V9 z& C) W( s2 R$ F
- delay_ms(10); 2 ]+ K- V0 D! j
- };
' B$ Y1 M' K' `% o - }
5 h2 R$ V, X& p
复制代码
- D! }3 S+ P% B- Z$ QRTC配置函数6 h; ?6 ]- [& d9 t) U, I! ]
这里说明一下 我的代码是可以直接复制替换的- N; e, j% W/ t; z3 h
说下基于原子我修改了哪些& Y, a; k9 m2 v2 u
使能了时钟和闹钟中断 之前只使能了时钟(RTC_ITConfig(RTC_IT_SEC|RTC_IT_ALR, ENABLE);)# x3 u, N2 ?: _9 h% U6 [& ~0 I
调用了设置闹钟值的函数(RTC_Alarm_Set(2021,1,13,16,39,59);)
/ Y; a( ?& J. H. _# S; E- - Q, u, N0 A8 W/ x3 n8 v
- 在闹钟中断的函数中 增加了蜂鸣器 启动 BEEP=1;5 o9 x& Q& l9 X7 E4 |3 W4 }4 u
- #include "sys.h"( C0 C' [) ]2 M3 u1 W- O5 D0 `
- #include "delay.h"
% r3 w4 w; N6 E3 q! j3 \5 F - #include "usart.h"
G! w M! ]8 O% g% v - #include "rtc.h" 1 N+ z! K7 u9 [% @, F8 R: K, ?
- #include "led.h"* W- l- T h6 ~$ h; K" L1 Z1 ?
- #include "beep.h" : {( X9 x( n0 n5 |& K7 l" b* {
- & @1 y" J' C4 H0 h
- / B1 d) o* C6 o' m
- _calendar_obj calendar;
0 G* p( g$ s. V/ h - : Z) f% C- [' d6 \9 g
- static void RTC_NVIC_Config(void)
+ d: E, m- ]5 A. K2 y - {
% {8 C9 r) V9 T; G( U( g# s - NVIC_InitTypeDef NVIC_InitStructure;
3 k7 f U2 I% `& \* W) e3 |. G - NVIC_InitStructure.NVIC_IRQChannel = RTC_IRQn;
$ Y2 X8 H. P1 A8 F* m# f* e( R3 n - NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; # @% ^5 `1 @" u8 W
- NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
5 h8 C v! p1 s) ?7 o. ^; B- f - NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
0 I* y( F l6 M+ y - NVIC_Init(&NVIC_InitStructure); 6 d8 g; J j) W+ J
- }
J+ C* l1 E6 @0 S, O5 y% X4 L - ; z5 D& h0 A- h$ H
, ^) S+ u8 x% I( ]- u8 RTC_Init(void)
& \0 O3 K# O$ F - {. D9 Z3 I1 v3 G# M; j
`9 F5 k: U3 M8 c$ c4 q+ N v: Y- u8 temp=0;, Z) H1 ?9 h) Y' q" B4 H
- RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR | RCC_APB1Periph_BKP, ENABLE);
( ?* M3 q, H1 _5 U' ?7 m - PWR_BackupAccessCmd(ENABLE);
& a J9 T: L6 ]2 b8 I) \' f8 P5 ~ ] - if (BKP_ReadBackupRegister(BKP_DR1) != 0x5051)
; C6 p; N1 Z# c3 o; t7 L - { - Y7 R0 @! q3 [) x5 A( W
- BKP_DeInit();* n: [! b4 _6 \; q9 x% D: U
- RCC_LSEConfig(RCC_LSE_ON);
& y3 S! o/ L/ M - while (RCC_GetFlagStatus(RCC_FLAG_LSERDY) == RESET&&temp<250)
! N: M; _$ a9 f O2 W - {
( B7 ^! O$ Z, Z3 o+ N - temp++;6 T/ r6 |) f1 J) _3 `8 U" G$ W V
- delay_ms(10);
/ L" N0 \. c; s& p - }2 e6 d5 b8 \2 R" D7 A6 b M
- if(temp>=250)return 1; 3 h$ o& o4 p; ]3 Y
- RCC_RTCCLKConfig(RCC_RTCCLKSource_LSE);
8 O5 M1 ?7 O0 s, b8 Y - RCC_RTCCLKCmd(ENABLE); ! r! ~! Y7 @, D( N
- RTC_WaitForLastTask(); & y0 V: x& T1 N! ]/ n% o/ q# M! v
- RTC_WaitForSynchro(); 6 g' I' o _2 I
- RTC_ITConfig(RTC_IT_SEC|RTC_IT_ALR, ENABLE); & a" x* [% O( j" i0 m5 Z
- RTC_WaitForLastTask();
, K: Y* Z. G5 p1 S0 E2 f - RTC_EnterConfigMode();: N; T3 x& P: {( _1 S
- RTC_SetPrescaler(32767); * h9 j- o! I9 r0 W
- RTC_WaitForLastTask();
$ V% z+ m% O# E# R* ?8 d - RTC_Set(2021,1,13,16,38,59); ' a' N) f# {4 m. \' R) Y, \* m
- RTC_Alarm_Set(2021,1,13,16,39,59); - C/ U9 {( }2 j4 d* I: i" N6 F
- RTC_ExitConfigMode();
+ `" j- G/ ]5 E; D - BKP_WriteBackupRegister(BKP_DR1, 0X5051);
5 a9 x9 k8 S- ~6 u5 f - }: u! L U. d% a* t; P; }8 `
- else//ϵͳ¼ÌÐø¼ÆÊ±" [6 j* J" ^9 c6 B. ]
- {
6 Q: T* ~# b& G& U) v0 } - ! U$ S( t# o! y
- RTC_WaitForSynchro(); & P( A ^8 M6 d; o9 {) {1 G4 y
- RTC_ITConfig(RTC_IT_SEC, ENABLE); ( J/ B' ~* g0 _3 j* n* L
- RTC_WaitForLastTask();
; _/ K! o8 d) ~; m - }
$ w- a" S2 Y6 h( W) q; b" \2 [ - RTC_NVIC_Config(); ( t2 M% V5 } Y# ?0 z; ?
- RTC_Get();
8 W& V+ _7 u/ r - return 0; & M- D$ J8 J$ w* r
- Y+ B7 l7 F: Q8 V
- }
( z) I+ p: C! h9 k8 P a7 C* l - : n. \# h, s: _& d: _# I$ e. A7 l2 f5 h" j
- void RTC_IRQHandler(void)( t7 z3 P* J' a2 u! l' k% Y' ]
- {
: p! D6 m" _& w0 |1 x: l8 {8 _ - if (RTC_GetITStatus(RTC_IT_SEC) != RESET)
6 {0 G: |8 X+ w/ j4 ]) c% x - {
6 g, _1 N5 H9 w0 F: l6 R - RTC_Get(); ) \" Y+ U8 ~, N- U% r/ G, ~* D/ y
- } [/ H7 d$ d. O4 B; F, d$ M
- if(RTC_GetITStatus(RTC_IT_ALR)!= RESET)
" M! [+ Y& N6 F! A) j6 F( J! v - {2 a8 k, h/ \7 S) y- G$ j
- RTC_ClearITPendingBit(RTC_IT_ALR); 8 Q: R# O2 } ~% J
- RTC_Get(); ! Y& |3 o: e; { _0 j7 T2 J3 p
- printf("Alarm Time:%d-%d-%d %d:%d:%d\n",calendar.w_year,calendar.w_month,calendar.w_date,calendar.hour,calendar.min,calendar.sec);1 h8 g# l# @. u% \4 I8 e5 ^7 ^( ~& u
- BEEP=1;# G: P1 u" y2 S" q1 d6 P" [; E
- }
- N ~- S0 c1 {/ K O* n2 n3 C4 [ - RTC_ClearITPendingBit(RTC_IT_SEC|RTC_IT_OW); + s" X7 v. C4 a6 h, y+ m
- RTC_WaitForLastTask();
, g+ L4 k# z O4 g$ T4 ] - }5 o9 o1 G" D! |. d& g/ D! Z
- 3 p2 q( u; B: Q; D
- u8 Is_Leap_Year(u16 year)
! j. c0 V% ?* m2 C - { 8 Y9 h1 ]) t& q, S1 |1 O/ w
- if(year%4==0) //
! S$ Y, M1 c6 } - { * f3 i9 {& E7 {6 K3 b& a
- if(year%100==0) x9 U! J0 k) [! @& u% s' `! B
- {
3 e# g, Q& ?5 b9 z V8 \/ X" h - if(year%400==0)return 1;
8 E8 y9 F5 T& a% r! D3 ~ - else return 0; 1 b* ^# ]) l; V3 c/ T( J: x
- }else return 1; 6 E5 P5 r% O7 c% J+ t8 c
- }else return 0; " y' h! ?! O9 C4 |/ I+ l- |; {
- } 9 c% E3 ~1 A7 [/ V- y# k, h) N
-
, U+ q% x3 d! \ - u8 const table_week[12]={0,3,3,6,1,4,6,2,5,0,3,5};
. F H4 ]! r2 l* y. l - const u8 mon_table[12]={31,28,31,30,31,30,31,31,30,31,30,31};+ E0 P5 i- L0 z7 Y0 O. l" W) k
- u8 RTC_Set(u16 syear,u8 smon,u8 sday,u8 hour,u8 min,u8 sec)
, E- c+ m- e8 o6 Y9 Y6 A; i- i - {
9 s! h6 Y9 F. |- \8 `& ? - u16 t;' x5 s$ b" J# j1 x
- u32 seccount=0;
0 [1 P. `4 c; Y( L' a - if(syear<1970||syear>2099)return 1;
, A) {+ {+ d0 b2 U1 ] - for(t=1970;t<syear;t++)
- l% K3 U5 r, f8 ]# @3 u1 I - {
3 n8 e& [0 b% d Y4 I& T, O - if(Is_Leap_Year(t))seccount+=31622400;
0 \- P& C& }4 m0 h3 ~ v+ s - else seccount+=31536000; & i$ ~$ M2 d' ~2 c+ n
- }
2 D4 I E, f' S& G7 c - smon-=1;- \3 b. M0 i+ r! E0 A
- for(t=0;t<smon;t++) 3 s2 o9 Y- @5 Y6 v' l6 ^
- {% ~$ X$ M: l4 C0 g7 ^
- seccount+=(u32)mon_table[t]*86400;
& |2 ?8 _( r0 t& H' @0 Q0 D - if(Is_Leap_Year(syear)&&t==1)seccount+=86400; 3 z& q& r, F7 x+ h
- }3 e1 _. M/ z$ H
- seccount+=(u32)(sday-1)*86400;
; Q* ^- l* C3 w - seccount+=(u32)hour*3600;
& U; [; k: a9 C+ ^; I! H# C2 d" } - seccount+=(u32)min*60; ) V y6 Z5 F) i
- seccount+=sec; _' b' \) _: x$ ?6 N0 L# D; g( F
+ E: [. B4 X# q! c1 I' J% q1 `- RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR | RCC_APB1Periph_BKP, ENABLE); # l4 i$ E# g& q; f* C! _
- PWR_BackupAccessCmd(ENABLE); //
8 G) n# u2 @1 C - RTC_SetCounter(seccount); //2 i( [2 E6 L5 J# H* P! k0 H. {, p
- RTC_WaitForLastTask(); //
4 A5 l& L `. Z8 c' n! @9 } - return 0;
9 A6 G x& Y i" g - }
' p3 w" B6 z( F1 E6 v8 @
% r* h) f# ~; X5 ?. \+ I# u- t% P( b$ t
' B% n2 ?4 p* f# t- u8 RTC_Alarm_Set(u16 syear,u8 smon,u8 sday,u8 hour,u8 min,u8 sec)& R9 T' B3 x9 F+ W
- {3 Q4 {- [2 x M1 | _; U% D
- u16 t;
6 N1 b) b' R. p$ R9 } - u32 seccount=0;
. C& ^7 P. t. y6 ] - if(syear<1970||syear>2099)return 1; 9 v( N& E, X/ o6 J0 P% W0 _* ~; Z
- for(t=1970;t<syear;t++) y$ L9 j b7 e
- {9 L# X5 m8 h+ G7 B2 @: g7 L
- if(Is_Leap_Year(t))seccount+=31622400;
; S5 x) `2 F5 x6 T8 e- f) T - else seccount+=31536000;
# H# {. M0 k) g* s" y - }( e: A1 ^8 @) j2 ]& r1 _3 B; R: H* l
- smon-=1;
& I3 I. o1 `' v" l6 n - for(t=0;t<smon;t++)
" G2 q3 y6 @4 Y5 J2 Q - {7 @( j" J9 F- x3 \2 m
- seccount+=(u32)mon_table[t]*86400;9 W) E5 y5 N+ i2 v
- if(Is_Leap_Year(syear)&&t==1)seccount+=86400;
( f |# E0 A6 A0 o - }
4 Y" q4 ]/ N' g5 f. T) F# m - seccount+=(u32)(sday-1)*86400;
0 Z) I& W8 [5 B z% v - seccount+=(u32)hour*3600;
+ m2 I. @, a$ u9 O5 Y+ T7 O2 n; { - seccount+=(u32)min*60; 7 B5 S1 r8 r- y5 b V
- seccount+=sec; : Q2 ]! W7 p$ h: b1 q: ]) C
- //ÉèÖÃʱÖÓ' P: I- D) L% [9 C8 j+ W
- RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR | RCC_APB1Periph_BKP, ENABLE);
0 r5 e8 ~/ R$ g' s/ W( d- r3 m# [* v- r: c - PWR_BackupAccessCmd(ENABLE); 9 g+ y7 {- G+ a
- RTC_SetAlarm(seccount);8 _ X1 @" q |" Q! S; G
- RTC_WaitForLastTask();
8 t3 D/ Y5 p6 u& R8 ~" G' m) J - " ^# T0 m, B$ @4 c! z
- return 0; : W5 k x( ^" L, t% A+ Y, |+ l
- }
3 }4 u8 f% l3 M# h0 Q1 m* Z$ | - u8 RTC_Get(void)
0 @4 O4 L; q! G, \' Z' ? - {+ I2 l/ f- h7 _7 n
- static u16 daycnt=0;# W) L$ X9 f, i& B r% Z2 A
- u32 timecount=0;
6 s% m# x Z- g$ } - u32 temp=0;
1 C2 z, v/ m* R1 P5 g3 O2 G - u16 temp1=0;
$ c6 f7 ^% h0 v$ n7 I$ G# x/ | - timecount=RTC_GetCounter();
) V7 I. O5 J+ r - temp=timecount/86400; 6 o) R0 s. [5 u8 b/ ]- T
- if(daycnt!=temp)
' {& w( `# D! x: {5 ^- N - { ; E I7 }. U' D3 e2 @4 d0 d
- daycnt=temp;
5 i2 _ W8 K# }: @9 p - temp1=1970;
5 Z# d/ d- c, L' ]# X6 e. r# T H - while(temp>=365). U# C: X$ X) S
- { 9 c) ^6 U; r/ L
- if(Is_Leap_Year(temp1))
4 I6 o8 I. e& H0 H/ u+ d1 i - {
! F& U/ E! u7 K t6 W5 ]" A - if(temp>=366)temp-=366;: `; _: L }9 p( T8 i1 {4 U6 \9 f
- else {temp1++;break;} 3 S6 Z* w% f V! Z2 e/ d( V
- }
6 C( ?& F6 E" h' p* `, J/ h/ h+ s - else temp-=365; //ƽÄê
. I4 ~- O+ p/ C# z8 M. a6 L4 G( ?! \ - temp1++;
* i1 u2 W4 K; l# J0 S( F - } 9 u) b0 a& |7 j: v5 u7 M, _
- calendar.w_year=temp1;
2 `+ |" C) @- S' ?3 K - temp1=0;
, I3 c( G6 {6 F* |* O8 E3 p - while(temp>=28)
$ K0 R+ u* Q/ ^ - {
! V- l! B6 N7 [7 c x: S x - if(Is_Leap_Year(calendar.w_year)&&temp1==1)
1 p8 H* v' Z! v6 Z( n1 ]; q8 D - {$ R7 h$ i, M/ |! c8 {4 f
- if(temp>=29)temp-=29;9 I; c7 B7 `, L3 P% [9 d
- else break;
& w6 t n: s/ d* {) C - }
* d, n) U# ~+ E" S' D' ~9 `+ M) z - else ( d# a# j3 j8 _, c! j
- {, Z& e+ R; n8 _0 s. y; ]
- if(temp>=mon_table[temp1])temp-=mon_table[temp1];8 `5 R! Z3 f( u9 c
- else break;+ d* `( `6 N8 A% G) \$ T. s3 I; D
- }' ? a1 @4 e" U& t+ P! B/ C3 k6 i
- temp1++;
% n3 ]: Z! _4 _& L' G - }
/ X" |% \; o8 I - calendar.w_month=temp1+1; $ q5 d7 L) }* b8 F2 Q: Y, b
- calendar.w_date=temp+1; - E. v0 J* h; f; m2 S7 E
- }
8 h7 E8 i. z. d - temp=timecount%86400;
3 I( C& S3 A% I/ S$ W* E( L% e# f - calendar.hour=temp/3600; % S( i* @+ }& N C% l
- calendar.min=(temp%3600)/60;
7 F0 \% [' M( x+ ~) ~: Y0 A - calendar.sec=(temp%3600)%60; & @, a3 Y1 L5 F% S% W: k3 {
- calendar.week=RTC_Get_Week(calendar.w_year,calendar.w_month,calendar.w_date); / W$ J/ N; q6 I+ W: a/ c
- return 0;
7 o4 L' ` g' D4 Y2 f - } , T% ^. [$ l8 c7 X% o
- % B6 t4 H8 F" v
- u8 RTC_Get_Week(u16 year,u8 month,u8 day); ^( A Y& ~- _
- {
* f- r" a% F: d- G - u16 temp2;: R' h3 W' }7 L$ T; i2 k8 V7 j
- u8 yearH,yearL;" Q1 Q% s' I, U4 M
-
7 |% l6 w6 F2 W2 J9 P9 V% H- c - yearH=year/100; yearL=year%100; 4 O4 y8 g( j) G0 C; j7 ?
- if (yearH>19)yearL+=100;) N8 _( h( i6 @5 b' ^' k
- temp2=yearL+yearL/4;" R% | e1 T2 n/ A
- temp2=temp2%7; 8 I% t4 R- G4 W0 ^" q; ^6 x
- temp2=temp2+day+table_week[month-1];
2 c* q( f4 \, Z* X$ B - if (yearL%4==0&&month<3)temp2--;
) Z! Q K1 y+ R4 {' t1 R" n - return(temp2%7); R$ P. P+ s* M1 ^' `/ c
- }
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复制代码
5 C6 J7 d0 I: R5 n6 A( V$ K小贴士:
' a' a8 G- b: [' |# U3 ^" |0 C( YRTC具有写保护功能 每次操作要修改掉/ r Z( U8 w2 ?+ J4 V) O# \1 \
if (BKP_ReadBackupRegister(BKP_DR1) != 0x5051)
5 C. i1 N+ E; R, e5 o$ }BKP_WriteBackupRegister(BKP_DR1, 0X5051);
7 D. J# }+ b0 S, _4 s1 H0 w这两行代码的值 最简便就是5051和5050变换. U5 Z- E6 ^ J9 ^: F2 O9 o/ V
如果程序报错 很可能是以下问题
' H2 ]9 k# j# G4 E2 `- z没有添加蜂鸣器源文件和头文件
. H5 u2 C5 s1 Q$ b' I' `& w! lmain函数没有初始化蜂鸣器
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