msp430使用OLED实现数字钟
作者:互联网
在这里可以下载完整的工程与原理图:
https://download.csdn.net/download/qq_45467083/12087894
本次实验使用msp430及一块扩展板实现数字钟系统,扩展板上有一块OLED屏幕与4x4矩阵键盘,此外还有一些led指示灯,如下图所示:
最终实现的效果如下图所示:
可以看到有一个动态的开机界面,细心的同学还会发现右上角是一个月亮图案,白天可是会变成太阳哦~
系统采用了层级设置界面的方式,使用状态标志记录当前显示界面。将显示与数据运算分层,使代码逻辑清晰易懂。
main函数代码如下:
#include <msp430f6638.h>
#include "lib\interfacePaint.h"
#include "lib\init.h"
#include "lib\oled\oled.h"
#include "lib\oled\bmp.h"
void Key_Head();
void run_time();
void run_date();
void make_date_legal();
int time_d = 0;//分频计数器
int h = 23, m = 59, s = 50;//时分秒
int y = 2017, mon = 12, d = 31;//出生日期为该天,计算多少天后的天数只需要用 (年-2018)+月天数+日天数 即可
//闹钟存储数组,5个闹钟,
//分别存储 h,m,s,off(0)/on(1)s
int alarms[5][4] = { {0,0,0,0},
{0,0,0,0},
{0,0,0,0},
{0,0,0,0},
{0,0,0,0} };
//界面字符串缓存,init时即初始化,闹钟设置选择界面使用
char set_alarm_string[25] = "1OFF 2OFF 3OFF 4OFF 5OFF";
int alarm_on = 0;
int alarm_count = 0;
//状态标志:0:走钟;1:设置;2:时间设置界面;3:日期设置界面;4:闹钟设置选择界面;41~45:第x个闹钟设置界面
unsigned int state = 0;
int time_mode = 1; // 12/24显示模式切换,1:表示24小时,0:表示12小时
int row_max = 1;//最大行数,移动行时使用
int choice_row = 1;//标志行,设置是标志位置使用
int key_delay = 0;//按键消抖,每10ms扫描键盘,一旦按键,计时开始,150ms后恢复
int reading = 0;//是否按下键
int scount = 0;//动画移动计数
unsigned char clearbmp[768]={0};
void main(void) {
WDTCTL = WDTPW+WDTHOLD;
//测试时钟频率使用
P1DIR |= BIT1;
P1OUT |= BIT1;
init_clock_XT2();
init_timerA();
init_keyboard();
init_led();
init_oled();
//初始化显示日期,因为日期刷新不频繁,故需要在此、在返回主界面、设置完毕、run_date()后执行
show_date(y, mon, d);
//使时间与日期同时出现
show_time(h,m,s);
OLED_DrawBMP(0, 1, 98, 24, clouds);
if(h<6 || h>21)
OLED_DrawBMP(110, 0, 126, 16, moon);
else
OLED_DrawBMP(110, 0, 126, 16, sun);
_enable_interrupts();
LPM0;
//while(1);
}
//timer_a定时器中断,中断时间是0.001s
#pragma vector = TIMER0_A0_VECTOR
__interrupt void TIMER0_A0_ISR(void){
//动画效果
if(state == 0 && time_d%21 == 0){
if(scount == 20){
scount=0;
OLED_DrawBMP(0, 1, 98, 24, clouds);
OLED_DrawBMP(98, 0, 130, 24, clearbmp);
if(h<6 || h>21)
OLED_DrawBMP(110, 0, 126, 16, moon);
else
OLED_DrawBMP(110, 0, 126, 16, sun);
}else{
OLED_DrawBMP(0+scount, 1, 98+scount, 24, clouds);
if(h<6 || h>21)
OLED_DrawBMP(110, 0, 126, 16, moon);
else
OLED_DrawBMP(110, 0, 126, 16, sun);
}
scount++;
}
//1s计时器
if(time_d == 100){
run_time();
switch(state){
case 0://时钟界面
if(time_mode)
show_time(h,m,s);
else
show_time12(h,m,s);
break;
case 1:setting_glisten(choice_row);break;//设置界面,闪烁选中行
case 2:time_set_glisten(choice_row,h,m,s);break;//时间设置界面,闪烁选中数字
case 3:date_set_glisten(choice_row,y,mon,d);break;//日期设置界面,闪烁选中数字
case 4:show_alarm_set_glisten(choice_row);break;//闹钟设置选择界面
case 41:case 42:case 43:case 44: case 45:
alarm_set_glisten(choice_row, alarms, state);
break;
default:break;
}
if(h==0 && m==0 && s==0){
run_date();
if(state == 0)
show_date(y, mon, d);
}
if(alarms[0][3] && alarms[0][0] == h && alarms[0][1] == m && alarms[0][2] == s){
alarm_on = 1; alarm_count = 0;
}
if(alarms[1][3] && alarms[1][0] == h && alarms[1][1] == m && alarms[1][2] == s){
alarm_on = 2; alarm_count = 0;
}
if(alarms[2][3] && alarms[2][0] == h && alarms[2][1] == m && alarms[2][2] == s){
alarm_on = 3; alarm_count = 0;
}
if(alarms[3][3] && alarms[3][0] == h && alarms[3][1] == m && alarms[3][2] == s){
alarm_on = 4; alarm_count = 0;
}
if(alarms[4][3] && alarms[4][0] == h && alarms[4][1] == m && alarms[4][2] == s){
alarm_on = 5; alarm_count = 0;
}
time_d = 0;
//测试时钟频率使用
P1OUT ^= BIT1;
}
//闹钟闪烁
if(alarm_on != 0 && time_d%50 == 0){
alarm_count++;
switch(alarm_on){
case 1:P6OUT ^= BIT0;break;
case 2:P6OUT ^= BIT1;break;
case 3:P6OUT ^= BIT2;break;
case 4:P6OUT ^= BIT3;break;
case 5:P6OUT ^= BIT4;break;
default:break;
}
if(alarm_count == 120){
alarm_count = 0;//计数清零
alarm_on = 0;//关闭闪烁
P6OUT |= BIT0 + BIT1 + BIT2 + BIT3 + BIT4 + BIT5 + BIT6 + BIT7;//熄灯
}
}
//每10ms扫描键盘,但读取后等待200ms后才能重新读取
if(key_delay > 20){ key_delay=0; reading = 0;}
//键盘扫描 ,f=100Hz
Key_Head();
if(reading == 1) key_delay++;
//分频计数器
time_d++;
}
volatile unsigned char KeyVal; //键值
volatile unsigned char CF[4], Cont[4];
const unsigned char KeyOut[4] = { 0xef, 0xdf, 0xbf, 0x7f }; //4X4按输出端控制
void Key_Head() {
static unsigned int ReadData[4];
unsigned int i;
for (i = 0; i < 4; i++) {
P4OUT = KeyOut[i] | 0x0f; //忽略低4位
ReadData[i] = (P4IN | 0xf0) ^ 0xff;
if(key_delay == 0){//按键消抖
reading=1;//按下标志
/*按键设置:
* A:前移 10
* B:后移 11
* C:停止闹钟 12
* D:12/24切换、闹钟on/off切换 13
* E:确认(进入设置界面) 14
* F:返回 15
* 其他:数字输入 */
KeyVal = (ReadData[i]&0x01)*0 + (ReadData[i]&0x02)/2 + (ReadData[i]&0x04)/2 + (ReadData[i]&0x08)/8*3 + i*4;
if(ReadData[i]){
switch(KeyVal){
case 0:case 1:case 2:case 3:case 4:case 5:case 6:case 7:case 8:case 9:
if(state == 2){//设置时间
switch(choice_row){
case 1:
if(KeyVal>2) KeyVal=2;
h=h%10+KeyVal*10;
break;
case 2:
if(h/10 == 2 && KeyVal > 3) KeyVal=3;
h=h/10*10+KeyVal;
break;
case 3:
if(KeyVal>5) KeyVal=5;
m=m%10+KeyVal*10;
break;
case 4:m=m/10*10+KeyVal;break;
case 5:
if(KeyVal>5) KeyVal=5;
s=s%10+KeyVal*10;
break;
case 6:s=s/10*10+KeyVal;break;
default:break;
}
//自增
choice_row++;
if(choice_row>row_max){
choice_row = 1;
}
}else if(state == 3){//设置日期
switch(choice_row){
case 1:y=y%1000+KeyVal*1000;break;
case 2:y=y/1000*1000+KeyVal*100+y%100;break;
case 3:y=y/100*100+KeyVal*10+y%10;break;
case 4:y=y/10*10+KeyVal;break;
case 5:mon=mon%10+KeyVal*10;break;
case 6:mon=mon/10*10+KeyVal;break;
case 7:d=d%10+KeyVal*10;break;
case 8:d=d/10*10+KeyVal;break;
default:break;
}
//自增
choice_row++;
if(choice_row>row_max){
choice_row = 1;
}
}else if(state/10 == 4){//设置闹钟时间
switch(choice_row){
case 1:
if(KeyVal>2) KeyVal=2;
alarms[state%10-1][0] = alarms[state%10-1][0]%10+KeyVal*10;
break;
case 2:
if(h/10 == 2 && KeyVal > 3) KeyVal=3;
alarms[state%10-1][0] = alarms[state%10-1][0]/10*10+KeyVal;
break;
case 3:
if(KeyVal>5) KeyVal=5;
alarms[state%10-1][1] = alarms[state%10-1][1]%10+KeyVal*10;
break;
case 4:alarms[state%10-1][1] = alarms[state%10-1][1]/10*10+KeyVal;break;
case 5:
if(KeyVal>5) KeyVal=5;
alarms[state%10-1][2] = alarms[state%10-1][2]%10+KeyVal*10;
break;
case 6:alarms[state%10-1][2] = alarms[state%10-1][2]/10*10+KeyVal;break;
default:break;
}
//自增
choice_row++;
if(choice_row>row_max){
choice_row = 1;
}
}
break;
case 10://前移键,row循环减一
choice_row--;
if(choice_row<1){
choice_row = row_max;
}
break;
case 11://后移键,row循环加一
choice_row++;
if(choice_row>row_max){
choice_row = 1;
}
break;
case 12://停止闹钟
if(alarm_on){
alarm_count = 0;//计数清零
alarm_on = 0;//关闭闪烁
P6OUT |= BIT0 + BIT1 + BIT2 + BIT3 + BIT4 + BIT5 + BIT6 + BIT7;//熄灯
}
break;
case 13://12/24切换
if(state == 0)
time_mode = !time_mode;
else if(state == 4){
if(alarms[choice_row-1][3] == 0){
set_alarm_string[(choice_row-1)*5+1] = 'O';
set_alarm_string[(choice_row-1)*5+2] = 'N';
set_alarm_string[(choice_row-1)*5+3] = ' ';
alarms[choice_row-1][3] = 1;
}else{
set_alarm_string[(choice_row-1)*5+1] = 'O';
set_alarm_string[(choice_row-1)*5+2] = 'F';
set_alarm_string[(choice_row-1)*5+3] = 'F';
alarms[choice_row-1][3] = 0;
}
//重绘
int i;
for(i=0;i<14;i++){
OLED_ShowChar(8+8*i,3,set_alarm_string[i]);
}
for(i=14;i<24;i++){
OLED_ShowChar(8*(i-14),5,set_alarm_string[i]);
}
}
break;
case 14://确认键
switch(state){
case 0://主界面
//进入设置界面
state = 1;
choice_row = 1;row_max = 3;
show_setting();
break;
case 1://设置界面
switch(choice_row){
case 1://进入时间设置
state = 2;
choice_row = 1;
row_max = 6;
time_set(h,m,s);
break;
case 2://进入日期设置
state = 3;
choice_row = 1;
row_max = 8;
date_set(h,mon,s);
break;
case 3://进入闹钟设置选择界面
state = 4;
choice_row = 1;
row_max = 5;
show_alarm_set();
break;
default:break;
}
break;
case 2://时间设置界面
//清屏返回主界面
OLED_Clear();
state = 0;choice_row = 1;row_max = 1;
show_time(h,m,s);
show_date(y, mon, d);
break;
case 3://日期设置界面
//判断输入的年份是否合法,不合法则初始化修改日,切不返回主界面
if(!is_date_legal(y, mon, d)){
y = 2017;
mon = 12;
d = 31;
}else{
//清屏返回主界面
OLED_Clear();
state = 0;choice_row = 1;row_max = 1;
show_time(h,m,s);
show_date(y, mon, d);
}
break;
case 4://闹钟设置选择界面
state = 40 + choice_row;
choice_row = 1;
row_max = 6;
alarm_set(alarms, state);
break;
case 41:case 42:case 43:case 44: case 45:
//清屏返回主界面
OLED_Clear();
state = 0;choice_row = 1;row_max = 1;
show_time(h,m,s);
show_date(y, mon, d);
break;
default:break;
}
break;
case 15://返回键
switch(state){
case 1:OLED_Clear();state = 0;show_time(h,m,s);show_date(y, mon, d);break;//返回主界面
case 2:/*state = 1;choice_row = 1;row_max = 3;show_setting();*/break;//不能返回设置界面
case 3:/*state = 1;choice_row = 1;row_max = 3;show_setting();*/break;//不能返回设置界面
case 4:state = 1;choice_row = 1;row_max = 3;show_setting();break;
case 41:case 42:case 43:case 44: case 45://返回闹钟设置选择界面
state = 4;
choice_row = 1;
row_max = 5;
show_alarm_set();
break;
default:break;
}
break;
default:break;
}
}
}
}
}
//时间运行函数,需要全局变量h、m、s
void run_time(){
s++;
if(s==60){
m++;s=0;
if(m==60){
h++;m=0;
if(h==24)
h=0;
}
}
}
//日期运行函数,需要全局变量y、mon、d
void run_date(){
//run day
d++;
//run month
if(d == 32){ d=1; mon++; }
else if((mon==4||mon==6||mon==9||mon==11)&&d==31){ d=1; mon++; }
else if((y%4==0&&y%100!=0)||(y%400==0)){
if(d==30){ d=1; mon++; }
}else{
if(d==29){ d=1; mon++; }
}
//run year
if(mon == 13){ mon = 1; y++;}
}
//判断输入的日期是否合法。 0表示不合法,1表示合法
int is_date_legal(int year, int month, int day){
if(!(y&&mon&&d)) return 0;
if(month>12) return 0;
else if(day>31) return 0;
else if((month==2||month==4||month==6||month==9||month==11)&&day==31) return 0;
else if(month==2&&day==30) return 0;
else if(month==2&&day==29){
if((year%4==0&&year%100!=0)||(year%400==0)) return 1;
else return 0;
}else
return 1;
}
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标签:case,10,KeyVal,数字钟,break,OLED,alarms,row,msp430 来源: https://blog.51cto.com/u_15262460/2883014