ili9341显示屏–时钟

要求：

使用Arduino控制LCD显示屏ili9341，在屏幕上显示一个尽可能大的时钟表盘，包含时针、分针、秒针。时钟能够正常走字计时。在屏幕上空余的地方显示日期。

Arduino上连接几个按钮，按下按钮时可以调整日期和时间。

注：题目来自HBUE的硬件编程考题，本代码仍有缺陷，显示器闪动严重，且不够简洁，代码电路仅供学习交流使用，转载使用时请注明来处。

代码

/*
SOFTWARE: Proteus 8 Professional
CSDN: 空白之子
*/
#include <stdint.h>
#include <TFTv2.h>
#include <SPI.h>#define PI 3.1415926
int i, j, k, m;
int hour1, hour2, min1, min2, second1, second2;
int year = 2021, month = 6, day = 18;
int temp[12]={31,28,31,30,31,30,31,31,30,31,30,31};
char clockNum[12][3] = { "12", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11"};
char num[12][3] = { "0", "1", "2", "3", "4", "5", "6", "7", "8", "9"};void setup()
{Serial.begin(9600);SPSR |= (1 << SPI2X);                       // 2x SPI speed TFT_BL_ON;                                  // turn on the background lightTft.TFTinit();                              //init TFT libraryfor (int ii = 2; ii <= 8; ++ii)pinMode(ii,  INPUT);OutClock();
}//显示器240*320
void loop()
{for (i = 0; i < 24; ++i){for (j = 0; j < 60; ++j){for (k = 0; k < 60; ++k){Adjust();OutTime();Clear();}}}CorrectDate();
}//显示裱框
void OutClock(void)
{int m, x, y;Tft.drawCircle(120, 110, 90,WHITE); for ( m = 0; m < 12; ++m){x = 120 + sin(PI * (m  /  6.0) ) * 85;y = 110 - cos(PI * (m  /  6.0) ) * 85;Tft.drawString(clockNum[m], x, y, 2, WHITE);}
}//显示时间日期表针
void OutTime(void)
{//时针、分针、秒针if (j == 59 || i == 0){Tft.drawLine(120,110,hour1,hour2,BLACK); }if (i == 59 || i == 0){Tft.drawLine(120,110,min1,min2,BLACK); }Tft.drawLine(120,110, second1, second2, BLACK);hour1 = 120 + sin(PI * (i  /  6.0) ) * 35;hour2 = 110 - cos(PI * (i  /  6.0) ) * 35;min1 = 120 + sin(PI * (j  /  30.0) ) * 55;min2 = 110 - cos(PI * (j  /  30.0) ) * 55;second1 = 120 + sin(PI * (k  /  30.0) ) * 70;second2 = 110 - cos(PI * (k  /  30.0) ) * 70;Tft.drawLine(120,110, second1, second2, WHITE);Tft.drawLine(120,110,min1,min2,GREEN); Tft.drawLine(120,110,hour1,hour2,RED);
//数字时间日期Tft.drawString(num[year/1000], 45, 260, 2, WHITE);Tft.drawString(num[year/100%10], 60, 260, 2, WHITE);Tft.drawString(num[year%100/10], 75, 260, 2, WHITE);Tft.drawString(num[year%10], 90, 260, 2, WHITE);Tft.drawString("-", 105, 260, 2, WHITE);Tft.drawString(num[month/10], 120, 260, 2, WHITE);Tft.drawString(num[month%10], 135, 260, 2, WHITE);Tft.drawString("-", 150, 260, 2, WHITE);Tft.drawString(num[day/10], 165, 260, 2, WHITE);Tft.drawString(num[day%10], 180, 260, 2, WHITE);Tft.drawString(num[i/10], 60, 230, 2, WHITE);Tft.drawString(num[i%10], 75, 230, 2, WHITE);Tft.drawString(":", 90, 230, 2, WHITE);Tft.drawString(num[ j/10], 105, 230, 2, WHITE);Tft.drawString(num[j%10], 120, 230, 2, WHITE);Tft.drawString(":", 135, 230, 2, WHITE);Tft.drawString(num[k/10], 150, 230, 2, WHITE);Tft.drawString(num[k%10], 165, 230, 2, WHITE);delay(1000);
}//更正日期
void CorrectDate(void)
{day++;if ( (year % 4 == 0 && year %100 != 0) || (year %400 == 0) )temp[1] = 29;if (day > temp[month - 1] ){day = 1;month++;}if (month > 12){month = 1;year++;}
}//调整时间日期
void Adjust(void)
{if (digitalRead(2) == HIGH){if (digitalRead(7) == HIGH)year++;if (digitalRead(8) == HIGH)year--;}if (digitalRead(3) == HIGH){if (digitalRead(7) == HIGH)month++;if (digitalRead(8) == HIGH)month--;}if (digitalRead(4) == HIGH){if (digitalRead(7) == HIGH)day++;if (digitalRead(8) == HIGH)day--;}if (digitalRead(5) == HIGH){if (digitalRead(7) == HIGH)i++;if (digitalRead(8) == HIGH)i--;}if (digitalRead(6) == HIGH){if (digitalRead(7) == HIGH)j++;if (digitalRead(8) == HIGH)j--;}if (k < 0 || k >= 60)k = 0;if (j < 0 || j >= 60)j = 0;if (i < 0 || i >= 24)i = 0;
}//部分清屏
void Clear(void)
{Tft.drawLine(120,110,hour1,hour2,BLACK); Tft.drawLine(120,110,min1,min2,BLACK); Tft.drawLine(120,110, second1, second2, BLACK); Tft.drawString(num[year/1000], 45, 260, 2, BLACK);Tft.drawString(num[year/100%10], 60, 260, 2, BLACK);Tft.drawString(num[year%100/10], 75, 260, 2, BLACK);Tft.drawString(num[year%10], 90, 260, 2, BLACK);Tft.drawString("-", 105, 260, 2, BLACK);Tft.drawString(num[month/10], 120, 260, 2, BLACK);Tft.drawString(num[month%10], 135, 260, 2, BLACK);Tft.drawString("-", 150, 260, 2, BLACK);Tft.drawString(num[day/10], 165, 260, 2, BLACK);Tft.drawString(num[day%10], 180, 260, 2, BLACK);Tft.drawString(num[i/10], 60, 230, 2, BLACK);Tft.drawString(num[i%10], 75, 230, 2, BLACK);Tft.drawString(":", 90, 230, 2, BLACK);Tft.drawString(num[ j/10], 105, 230, 2, BLACK);Tft.drawString(num[j%10], 120, 230, 2, BLACK);Tft.drawString(":", 135, 230, 2, BLACK);Tft.drawString(num[k/10], 150, 230, 2, BLACK);Tft.drawString(num[k%10], 165, 230, 2, BLACK);
}

电路

效果

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ili9341显示屏--时钟

ili9341显示屏–时钟

代码

电路

效果

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