如何用Arduino完成随机抽题功能？
各位DF大佬们，用Arduino完成随机抽题功能，一个按键、两位数码管，按下按键后，随机生成01～12之间的一个数字，代表抽签的结果，如何实现，求解自己测试看看，另外自己加个按键功能
int randNumber;
// Define the LED digit patters, from 0 - 9
// Note that these patterns are for common cathode displays
// For common anode displays, change the 1's to 0's and 0's to 1's
// 1 = LED on, 0 = LED off, in this order:
// Arduino pin: 2,3,4,5,6,7,8
byte seven_seg_digits =
{
{ 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() {
pinMode(2, OUTPUT);
pinMode(3, OUTPUT);
pinMode(4, OUTPUT);
pinMode(5, OUTPUT);
pinMode(6, OUTPUT);
pinMode(7, OUTPUT);
pinMode(8, OUTPUT);
pinMode(9, OUTPUT);
writeDot(0);// start with the "dot" off
}
void writeDot(byte dot) {
digitalWrite(9, dot);
}
void sevenSegWrite(byte digit) {
byte pin = 2;
for (byte segCount = 0; segCount < 7; ++segCount) {
digitalWrite(pin, seven_seg_digits);
++pin;
}
}
void loop() {
// print number from 9 to 1
//for (byte count = 10; count > 0; --count) {
// delay(1000);
// sevenSegWrite(count - 1);
// print a random number from 1 to 6
randNumber = random(1, 7);
Serial.println(randNumber);
sevenSegWrite(randNumber);
delay(1000);
} gada888 发表于 2020-12-3 09:31
自己测试看看，另外自己加个按键功能
int randNumber;
{:6_215:}{:6_204:}
页:
[1]