Raspberry PiでPythonを使用してGY-85の9軸モジュール情報を取得する例

先看效果图

GY-85.py:

复制代码 代码如下:

#!/usr/bin/python3
# -*- coding: utf-8 -*-
import curses
from time import *
from i2clibraries import i2c_itg3205, i2c_adxl345, i2c_hmc5883l

#==========================================================
#                       GY-85传感器监控
#==========================================================

def displayITG3205(screen, col, temp, x, y, z):
    """
    显示ITG3205读数的方法
    """
    screen.addstr(1, col, "%.1f°℃    " % temp)
    screen.addstr(2, col, "%.1f°/s    " % x)
    screen.addstr(3, col, "%.1f°/s    " % y)
    screen.addstr(4, col, "%.1f°/s    " % z)

def displayADXL345(screen, col, x, y, z):
    """
    显示ADXL345读数的方法
    """
    screen.addstr(1, col, "%.2fmg    " % x)
    screen.addstr(2, col, "%.2fmg    " % y)
    screen.addstr(3, col, "%.2fmg    " % z)

def displayHMC5883L(screen, col, heading, declination, x, y, z):
    """
    显示MC5883L读数的方法
    """
    screen.addstr(1, col, heading + "   ")
    screen.addstr(2, col, declination + "   ")
    screen.addstr(3, col, "%.2f   " % x)
    screen.addstr(4, col, "%.2f   " % y)
    screen.addstr(5, col, "%.2f   " % z)

try:
    myscreen = curses.initscr() #初始化curses
    myscreen.border(0)
    (screen_h, screen_w) = myscreen.getmaxyx() #获得屏幕高宽
    curses.start_color() #设置颜色
    curses.init_pair(1, curses.COLOR_BLACK, curses.COLOR_GREEN) #绿底黑字
    curses.init_pair(2, curses.COLOR_RED, curses.COLOR_BLACK) #白底蓝字
    curses.init_pair(3, curses.COLOR_MAGENTA,curses.COLOR_BLACK) #黑底什么字

    myscreen.clear() #清除画布

    # 计算每块的坐标, 屏幕分3列, 每列显示一个传感器
    col1 = screen_w / 3 * 0
    col2 = screen_w / 3 * 1
    col3 = screen_w / 3 * 2

    # 屏幕横向分三块,每块中间写上标题
    myscreen.addstr(0, int(col1 + screen_w / 3 / 2 - 3), "IGT3205", curses.color_pair(1))
    myscreen.addstr(0, int(col2 + screen_w / 3 / 2 - 4), "ADXL345", curses.color_pair(1))
    myscreen.addstr(0, int(col3 + screen_w / 3 / 2 - 4), "HMC5883L", curses.color_pair(1))

    #画分割线,把屏幕分为3列
    for col in range(1, screen_h):
        myscreen.addstr(col, int(col2), "│")
        myscreen.addstr(col, int(col3), "│")

    # 事先打印IGT3205的各项值的名称
    myscreen.addstr(1, int(col1), "Temp:", curses.color_pair(2))
    myscreen.addstr(2, int(col1), "X   :", curses.color_pair(2))
    myscreen.addstr(3, int(col1), "Y   :", curses.color_pair(2))
    myscreen.addstr(4, int(col1), "z   :", curses.color_pair(2))

    # 事先打印ADXL345的各项值的名称
    myscreen.addstr(1, int(col2) + 1, "X:", curses.color_pair(2))
    myscreen.addstr(2, int(col2) + 1, "Y:", curses.color_pair(2))
    myscreen.addstr(3, int(col2) + 1, "z:", curses.color_pair(2))

    # 事先打印HMC5883L的各项值的名称
    myscreen.addstr(1, int(col3) + 1, "Heading:    ", curses.color_pair(2))
    myscreen.addstr(2, int(col3) + 1, "Declination:", curses.color_pair(2))
    myscreen.addstr(3, int(col3) + 1, "X:          ", curses.color_pair(2))
    myscreen.addstr(4, int(col3) + 1, "Y:          ", curses.color_pair(2))
    myscreen.addstr(5, int(col3) + 1, "z:          ", curses.color_pair(2))

# センサーを初期化します
itg3205 = i2c_itg3205.i2c_itg3205(0)

adxl345 = i2c_adxl345.i2c_adxl345(0)

hmc5883l = i2c_hmc5883l.i2c_hmc5883l(0)
hmc5883l.setContinuousMode() #連続更新モードに設定します
hmc5883l.setDeclination(9,54) #真北磁偏角補正を設定します

while True:
#Read itg3205 data
(itgready, dataready) = itg3205.getInterruptStatus()
if dataready:
temp = itg3205.getD ieTemperature()
(x, y, z) = itg3205.getDegPerSecAxes()
displayITG3205(myscreen, 6, temp, x, y, z) #キャンバスを更新

#adxl345 データの読み取り
(x, y, z) = adxl345.getAxes()
displayADXL345(myscreen, int(col2) + 4, x, y, z) #キャンバスを更新

スルー ’ s ’ s ’ s ’ s ‐ ‐ ‐ ‐ to DeclinationString() #磁気偏角を取得補正情報
displayHMC5883L(myscreen, int(col3) + 13, 方位, 赤緯, x, y, z) #キャンバスを更新

myscreen.refresh() #アプリケーションキャンバス
sleep(0.1) #0.1 秒間一時停止

myscreen.getch()

最後に:

curses.endwin()