好久沒有用洞洞板做東西了..
架構就是三個按鈕,上/下/開始(長按:設定警告分鐘),一個Reset(回到開始的設定),然後兩個LED與四個七段顯示器.另外因為Pin不夠用了,所以加了一個74HC595控制七段顯示器的abcdefg
接線圖我就不畫了,反正把程式碼的各個Pin設定好就能用
#include <stdio.h>
byte digit[8] = {1, 3, 5, 6, 7, 2, 4, 0};
byte num[4] = {5, 6, 7, 4};
byte led[3] = {2, 3, A4};
byte button[3] = {A0, A1, A2};
int SER_Pin = 8; //pin 14 on the 75HC595
int RCLK_Pin = 9; //pin 12 on the 75HC595
int SRCLK_Pin = A3; //pin 11 on the 75HC595
int reset = 10;
#define number_of_74hc595s 1
#define numOfRegisterPins number_of_74hc595s * 8
boolean registers[numOfRegisterPins];
byte seven_seg_digits[10][7] = { { 1, 1, 1, 1, 1, 1, 0 }, // = 0
{ 0, 1, 1, 0, 0, 0, 0 }, // = 1
{ 1, 1, 0, 1, 1, 0, 1 }, // = 2
{ 1, 1, 1, 1, 0, 0, 1 }, // = 3
{ 0, 1, 1, 0, 0, 1, 1 }, // = 4
{ 1, 0, 1, 1, 0, 1, 1 }, // = 5
{ 1, 0, 1, 1, 1, 1, 1 }, // = 6
{ 1, 1, 1, 0, 0, 0, 0 }, // = 7
{ 1, 1, 1, 1, 1, 1, 1 }, // = 8
{ 1, 1, 1, 0, 0, 1, 1 } // = 9
};
void setup() {
Serial.begin(115200);
for (int i = 0; i < 3; i++) {
pinMode(button[i], INPUT_PULLUP);
}
pinMode(reset, INPUT_PULLUP);
for (int i = 0; i <= 3; i++) {
pinMode(num[i], OUTPUT);
}
for (int i = 0; i < 3; i++) {
pinMode(led[i], OUTPUT);
digitalWrite(led[i], HIGH);
}
pinMode(SER_Pin, OUTPUT);
pinMode(RCLK_Pin, OUTPUT);
pinMode(SRCLK_Pin, OUTPUT);
clearRegisters();
writeRegisters();
}
int second = 0;
int minute = 0;
int lastth = 0;
int lastminute = 0;
uint32_t lastbutton = 0;
uint32_t counttime = 0;
uint32_t ledtime = 0;
bool counting = 0;
int state = 0;
bool settime = 0;//0=countdown 1=last
int th = 5;
void loop() {
if (settime) {
disp(th / 10, th % 10, 0, 0);
digitalWrite(led[1], HIGH);
}
else if(0==digitalRead(reset)){
settime=0;
counting =0;
minute = lastminute;
th = lastth;
second = 0;
}
else {
disp(minute / 10, minute % 10, second / 10, second % 10);
if (millis() - counttime > 1000) {
if (counting == 1) {
second--;
if (second < 0) {
minute--;
second = 59;
}
if (minute < 0) {
minute = 0;
second = 0;
}
Serial.print(minute);
Serial.print(",");
Serial.println(second);
if (minute < th) {
digitalWrite(led[0], HIGH);
// Serial.println("Alarm");
}
else {
digitalWrite(led[0], LOW);
}
if (minute <= 0 && second <= 0) {
digitalWrite(led[1], HIGH);
//Serial.println("STOP");
}
else {
digitalWrite(led[1], LOW);
}
state = !state;
digitalWrite(led[2], state);
//Serial.println(digitalRead(led[2]));
}
else {
//Serial.print(digitalRead(led[0]));
//Serial.print(digitalRead(led[1]));
//Serial.println(digitalRead(led[2]));
// digitalWrite(led[0], !digitalRead(led[0]));
// digitalWrite(led[1], !digitalRead(led[1]));
}
counttime = millis();
}
else if (millis() - ledtime>200){
if (counting == 0){
digitalWrite(led[0], !digitalRead(led[0]));
digitalWrite(led[1], !digitalRead(led[1]));
state = !state;
digitalWrite(led[2], state); //ditry fix about digitalRead error on led2
ledtime = millis();
}
}
}
scan();
}
void change(int i) {
switch (i) {
case 0:
if (0 == settime) {
if(counting){
counting = 0;
}
else{
counting = 1;
lastminute = minute;
lastth = th;
}
}
else {
}
break;
case 1:
if (0 == settime && counting == 0) {
minute++;
second = 0;
//Serial.println(minute);
}
else if (1 == settime) {
th++;
//Serial.println(th);
}
break;
case 2:
if (0 == settime && counting == 0) {
minute--;
if (minute < 0) {
minute = 0;
}
second = 0;
//Serial.println(minute);
}
else if (1 == settime) {
th--;
if (th < 0) {
th = 0;
}
//Serial.println(th);
}
break;
}
}
void scan() {
uint32_t start = 0;
int flag = 0;
for (int i = 0; i <= 2; i++) {
if (0 == digitalRead(button[i])) {
if (millis() - lastbutton > 150) {
start = millis();
while (0 == digitalRead(button[i])) {
if (settime) {
disp(th / 10, th % 10, 0, 0);
}
else {
disp(minute / 10, minute % 10, second / 10, second % 10);
}
if (i == 0 && millis() - start >= 500 && flag==0) {
settime = !settime;
//Serial.print("SET TIME:");
//Serial.println(settime);
flag = 1;
lastbutton = millis();
}
}
if(flag==0){
change(i);
lastbutton = millis();
}
}
//Serial.println(millis() - start);
}
}
}
void disp(int a, int b, int c, int d) {
int data[4] = {a, b, c, d};
for (int dig = 0; dig <= 3; dig++) {
for (byte seg = 0; seg < 7; ++seg) {
setRegisterPin(digit[seg], !seven_seg_digits[data[dig]][seg]);
// digitalWrite(digit[seg], !seven_seg_digits[data[dig]][seg]);
}
writeRegisters();
digitalWrite(num[dig], HIGH);
delayMicroseconds(100);
digitalWrite(num[dig], LOW);
}
}
//set all register pins to LOW
void clearRegisters() {
for (int i = numOfRegisterPins - 1; i >= 0; i--) {
registers[i] = HIGH;
}
}
//Set and display registers
//Only call AFTER all values are set how you would like (slow otherwise)
void writeRegisters() {
digitalWrite(RCLK_Pin, LOW);
for (int i = numOfRegisterPins - 1; i >= 0; i--) {
digitalWrite(SRCLK_Pin, LOW);
int val = registers[i];
digitalWrite(SER_Pin, val);
digitalWrite(SRCLK_Pin, HIGH);
}
digitalWrite(RCLK_Pin, HIGH);
}
//set an individual pin HIGH or LOW
void setRegisterPin(int index, int value) {
registers[index] = value;
}
void serialEvent(){
minute = Serial.parseInt();
second = Serial.parseInt();
th = Serial.parseInt();
counting = Serial.parseInt();
settime = 0;
while(Serial.available()){
int dummy = Serial.read();// statement
}
}
====Update:2016/08/28====
Video:
