【Mind+Python】基于BMP280气压传感器的玻意耳定律演示器 简单

/*!
 * MindPlus
 *
 */
#include <MPython.h>
#include <DFRobot_BMP280.h>
#include <DFRobot_UDPServer.h>

// 动态变量
String         mind_s_data;
volatile float mind_n_Temp, mind_n_Pres;
// 函数声明
String numberRetain(float t, uint8_t n);
// 创建对象
DFRobot_BMP280 bme280;
DFRobot_Iot        myIot;
DFRobot_UDPServer  myserver;


// 主程序开始
void setup() {
	mPython.begin();
	bme280.begin(0x76);
	mind_n_Temp = 0;
	mind_n_Pres = 0;
	display.fillScreen(0);
	display.setCursorLine(1);
	display.printLine("网络连接中...");
	myIot.wifiConnect("testwifi", "12345678");
	while (!myIot.wifiStatus()) {yield();}
	display.fillInLine(1, 0);
	display.setCursorLine(1);
	display.printLine("网络建立成功");
	delay(3000);
	display.fillInLine(1, 0);
	display.setCursorLine(1);
	display.printLine("        温度气压测量");
	myserver.setPort(8888);
}
void loop() {
	mind_n_Pres = (String((bme280.getPressure() / 100)).toInt());
	mind_n_Temp = (String((round((bme280.getTemperature() + 273.15)))).toInt());
	mind_s_data = (String(mind_n_Pres) + String((String(":") + String(mind_n_Temp))));
	myserver.sendUdpMsg(mind_s_data);
	display.setCursorLine(2);
	display.printLine((String("    温度：") + String((String(numberRetain(mind_n_Temp,0)) + String("K")))));
	display.setCursorLine(3);
	display.printLine((String("    压强：") + String((String(numberRetain(mind_n_Pres,0)) + String("hPa")))));
	display.setCursorLine(4);
	display.printLine("数据发送中...");
	delay(1000);
}


// 静态函数
String numberRetain(float t, uint8_t n)
{
  String str=t<0 ? "-" : ""; int8_t _n=n; t=abs(t);
  for(; _n>=0; --_n){
    uint32_t integer = floor(t);
    float decimal = t - integer;
    str += _n == n ? (String(integer) + (n ? "." : "")) : integer;
    t = decimal*10;
  }
  return str;
}

# 造物记上传版

from matplotlib import pyplot as plt
import matplotlib.animation as animation
import datetime as dt
import matplotlib
import time
import socket

# 创建套接字
udp_socket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
# 绑定一个本地信息
localaddr = ("192.168.137.1",8888) # 必须绑定自己电脑IP和port
udp_socket.bind(localaddr)
data = []
matplotlib.rcParams['font.family'] = 'FangSong'  
fig = plt.figure(num = '气体温度压强测量', figsize=(12, 6), dpi = 100) 
ax1 = fig.add_subplot(1, 1, 1) 
ax1.yaxis.set_tick_params(labelcolor='b')
ax1.yaxis.set_tick_params(color='b')
ax2 = ax1.twinx() 
ax2.yaxis.set_tick_params(labelcolor='r') 
ax2.yaxis.set_tick_params(color='r')  
xs = []  
ys1 = [] 
ys2 = []  

def animate(i, xs, ys1,ys2):
    recv_data = udp_socket.recvfrom(1024)
    recv_msg = recv_data[0]
    send_addr = recv_data[1]
    data = recv_msg.decode("gbk").split(":")
    press = int(eval(data[0]))
    temp = int(eval(data[1]))
    xs.append(dt.datetime.now().strftime('%H:%M:%S'))
    ys1.append(press)
    ys2.append(temp)
    xs = xs[-20:]
    ys1 = ys1[-20:]
    ys2 = ys2[-20:]
    ax1.clear()
    ax2.clear()
    ax1.set_ylabel('气压P/×100Pa', color = 'b', size = 15)
    ax1.set_ylim(300,1600)
    ax1.tick_params('x', labelrotation=45)
    ax2.set_ylabel('热力学温度T/K', color = 'r', size = 15)
    ax2.set_ylim(270,380)
    ax1.plot(xs, ys1, 'b.-')
    ax2.plot(xs, ys2, 'r.:')
    plt.title('测量气体压强、温度', size = 20)
    for a, b, c in zip(xs, ys1, ys2):
        ax1.text(a, b, b, ha='center', va='bottom', color = 'b', fontsize=15, alpha = 0.5)
        ax2.text(a, c, c, ha='center', va='bottom', color = 'r', fontsize=15, alpha = 0.5)

ani = animation.FuncAnimation(fig, animate, fargs=(xs, ys1,ys2), interval=1000)
plt.show()
udp_socket.close()