将草图另存为parseInt_example。 输入此代码: int val; void setup() { // put your setup code here, to run once: Serial.begin(9600); } void loop() { // put your main code here, to run repeatedly: while(Serial.available() > 0){ val = Serial.parseInt(); Serial.println(val); } }...
方法/步骤 1 定义变量，设置LED灯的引脚 2 开启串行通信接口并设置通信波特率 3 配置引脚为输出模式 4 判断串口缓冲器是否有数据装入，如果有则进行操作 5 在串口数据流中寻找下一个有效的数据，使用Serial.parseInt()函数来解析一列用非字母字符分割的值。6 读取串口数据，比较运算符使用，测试是否换行，满足这个...
库函数目录 if (Serial) available() availableForWrite() begin() end() find() findUntil() flush() parseFloat() parseInt() peek() print() println() read() rea
通过下面的while()程序,它会一直运行直到读到一些信息: while (Serial.available() > 0) { 然后,声明为串口的信息设置一些区域变量。这个将变成LED灯的亮度。用Serial.parseInt()来分离带有逗号的数据,将信息读到变量里: int red = Serial.parseInt(); int green = Serial.parseInt(); int blue = Serial.pa...
串口事件响应,非必要——serialEvent() 什么是串口 到目前为止,介绍的Arduino API接口都是一些比较底层的接口——即简单的通过电位高低获得指定输入输出的信号。既然这部分系列的文章是介绍Arduino的默认系统API,那么作为嵌入式设备需要提供的几个重要接口之一的——串口协议自然不能不提到。
Serial.print(F("Baud rate: ")); Serial.println(finger.baud_rate); } uint8_t readnumber(void) { uint8_t num = 0; while (num == 0) { while (! Serial.available()); num = Serial.parseInt(); } return num; } void loop() // run over and over again ...
num = Serial.parseInt(); } return num; } void loop() // 循环执行 { Serial.println("Ready to enroll a fingerprint!"); Serial.println("lease type in the ID # (from 1 to 127) you want to save this finger as..."); id = readnumber(); ...
num = Serial.parseInt(); } return num; } void loop() // 循环执行 { Serial.println("Ready to enroll a fingerprint!"); Serial.println("lease type in the ID # (from 1 to 127) you want to save this finger as..."); id = readnumber(); ...
num = Serial.parseInt(); } return num; } void loop() // run over and over again { Serial.println("Ready to enroll a fingerprint!"); Serial.println("Please type in the ID # (from 1 to 127) you want to save this finger as..."); ...
num = Serial.parseInt(); } return num; } void loop() // run over and over again { Serial.println("Ready to enroll a fingerprint!"); Serial.println("Please type in the ID # (from 1 to 127) you want to save this finger as..."); ...