时钟

目的 本教程将教大家如何用processing来显示Microduino时钟。 设备 Microduino-Core Microduino-FT232R Microduino-RTC 其他硬件设备 USB数据连接线 一根 原理图 堆叠设备说明中的三个Microduino模块即可 程序 https://github.com/Microduino/Microduino_Tutorials/tree/master/Microduino_Processing/ProcessingColock https://github.com/Microduino/Microduino_Tutorials/tree/master/Microduino_Processing/MicroduinoColock 调试 步骤一：按着原理图搭建硬件环境，像这样： 步骤二：解释一下代码： 本例需要两端的代码，Processing端和Microduino端 Microduino: //运行RTC,并输出时间数据到串口 void loop() { rtc.formatDate(); rtc.formatTime(); //send time data to port Serial.print(rtc.getHour()); Serial.print(":"); Serial.print(rtc.getMinute()); Serial.print(":"); Serial.println(rtc.getSecond()); } //初始化时间 //inital time void vosettime() { //rtc.initClock(); //day, weekday, month, century(1=1900, 0=2000), year(0-99) rtc.setDate(4, 1, 6, 0, 14); //hr, min, sec rtc.setTime(15, 28, 50); } Processing: //得到第一个串口的数据，并定义如果有换行就缓存 // List all the available serial ports in the output pane. // You will need to choose the port that the Wiring board is // connected to from this list. The first port in the list is // port #0 and the third port in the list is port #2. println(Serial.list()); // Open the port that the Wiring board is connected to (in this case #0) // Make sure to open the port at the same speed Wiring is using (9600bps) port = new Serial(this, Serial.list()[0], 9600); //初始化钟表圆心位置，时针，分针，秒针的长度 int radius = min(width, height)/2; secR = radius * 0.72; minR = radius * 0.60; hourR = radius * 0.50; clockDiameter = radius * 1.8; cx = width /2 ; cy = height /2 ; //串口输出鼠标x坐标值，并绘制当前值 void update(int x) { port.write(x); stroke(255); line(mouseX, 0, mouseX, 160); text (mouseX, mouseX, 180); } //接收串口数据，处理时间信息 //split data by ":" String time[]=val.split(":"); //if some exception happend, initial time is 0 colock try { hour=Integer.parseInt(time[0]); minute=Integer.parseInt(time[1]); second=Integer.parseInt(time[2]); } catch (NumberFormatException e) { hour=0; minute=0; second=0; } //绘制钟表 float s = map(second, 0, 60, 0, TWO_PI) - HALF_PI; float m = map(minute+norm(second, 0, 60), 0, 60, 0, TWO_PI)- HALF_PI; float h = map(hour+norm(minute, 0, 60), 0, 24, 0, TWO_PI * 2 ) - HALF_PI; //draw colock stroke(255, 250, 0); strokeWeight(1); line(cx, cy, cx + cos(s) * secR, cy + sin(s) * secR); strokeWeight(2); line(cx, cy, cx+ minR * cos(m), cy + minR * sin(m)); strokeWeight(4); line(cx, cy, cx + hourR * cos(h), cy + hourR * sin(h)); strokeWeight(2); stroke(255, 0, 0); for (int a = 0 ;a<360;a+=6) { float angle = radians(a); float cx1 = (secR+20) * cos(angle); float cy1 = (secR+20) * sin(angle); point(cx + cx1, cy + cy1); if (a%30==0) { line(cx+cx1, cy+cy1, cx+cx1*0.98, cy+cy1*0.98); fill(255); int mark; if (a/30>9) { mark = a/30 -9; } else { mark = a/30 +3; } text(mark, cx+cx1*1.05-5, cy+cy1*1.05+5); } fill(90, 155, 11); text(hour+":"+minute+":"+second, cx-25, cy+100); text("Microduino", cx-25, cy-100); } 步骤三：下载代码并编译通过。 步骤四：运行后，看看processing中会出现什么。 结果 屏幕上会显示一个运转的时钟，像这样 视频