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main.py
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main.py
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import time
import ntptime
import urequests as requests
from ST7735 import TFT
from machine import SPI,Pin
from math import floor
from micropython import const
class main():
x_min=15
x_max=120
y_top=50
y_bottom=120
temp=[]
pres=[]
water=[]
humi=[]
date=[]
ntp_url='ntp4.aliyun.com'
dat_url='put your own address here'
last_time_update=None
def __init__(self,wlan,SSID,PASSWD):
#init wlan
self.wlan=wlan
self.SSID=SSID
self.PASSWD=PASSWD
#init time
print('ntp_url:',self.ntp_url)
ntptime.host=self.ntp_url
print('ntp_host:',ntptime.host)
ntptime.time()
ntptime.settime()
self.last_time_update=time.time()
print('init_time:',time.localtime(self.last_time_update+3600*8))
#init data
print('dat_url:',self.dat_url)
#init display mod
'''
mode:
0:cycle
1:temp only
2:pres only
3:water only
4:humi only
'''
self.mode=0
'''
last:
0:temp
1:pres
2:water
3:humi
'''
self.last=0
#init tft
print('init TFT...')
spi = SPI(1, baudrate=32000000, polarity=0, phase=0)
self.tft=TFT(spi,2,16,0)
self.tft.init_7735(self.tft.GREENTAB128x128)
self.tft.fill(TFT.WHITE)
self.tft.text((5,10),"initlizing",TFT.YELLOW,2,nowrap=True)
self.tft.text((5,50),"please wait",TFT.YELLOW,2,nowrap=True)
self.run()
def run(self):
while True:
self.display_time()
self.get_dat()
self.display_data()
time.sleep(5)
def get_time(self):
time_now=time.time()
if time_now-self.last_time_update>=3600:
ntptime.time()
ntptime.settime()
time_now=time.time()
self.last_time_update=time_now
return time.localtime(time_now+3600*8)
def display_time(self):
time_now=self.get_time()
print("p time",time_now)
self.tft.fill(TFT.BLACK)
self.tft.text((5,5),str(time_now[0])+' '+str(time_now[1])+' '+str(time_now[2]),TFT.GRAY,1.8,nowrap=True)
self.tft.text((35,20),str(time_now[3])+':'+str(time_now[4])+':'+str(time_now[5]),TFT.GRAY,1.8,nowrap=True)
def get_dat(self):
req=requests.get(self.dat_url)
data=req.json()
if len(self.date)>0 and self.date[len(self.date)-1]==data['date']:
return
if len(self.temp)>=10:
self.temp.pop(0)
self.water.pop(0)
self.humi.pop(0)
self.pres.pop(0)
self.date.pop(0)
self.temp.append(data['tmp2'])
self.water.append(data['tmp0'])
self.humi.append(data['humi'])
self.pres.append(data['pres'])
self.date.append(data['date'])
return
def display_data(self):
def draw_axis(self):
self.tft.line((self.x_min,self.y_top),(self.x_min,self.y_bottom),TFT.WHITE)
self.tft.line((self.x_min,self.y_bottom),(self.x_max,self.y_bottom),TFT.WHITE)
self.tft.line((self.x_min,self.y_top),(self.x_min-5,self.y_top+5),TFT.WHITE)
self.tft.line((self.x_min,self.y_top),(self.x_min+5,self.y_top+5),TFT.WHITE)
self.tft.line((self.x_max,self.y_bottom),(self.x_max-5,self.y_bottom+5),TFT.WHITE)
self.tft.line((self.x_max,self.y_bottom),(self.x_max-5,self.y_bottom-5),TFT.WHITE)
self.tft.text((self.x_min,self.y_top-10),"y",TFT.WHITE,1,nowrap=True)
self.tft.text((self.x_max,self.y_bottom-10),"x",TFT.WHITE,1,nowrap=True)
for i in range(self.x_min,self.x_max,floor((self.x_max-self.x_min)/10)):
self.tft.line((i,self.y_bottom-2),(i,self.y_bottom+3),TFT.WHITE)
def draw_points(self,data):
self.y_top=self.y_top+10
x_dis=floor((self.x_max-self.x_min)/10)
x_now=self.x_min
dat_min=100000
dat_max=-100000
for i in data:
if i<dat_min:
dat_min=i
if i>dat_max:
dat_max=i
if dat_min>dat_max:
return
points=[]
which=0
if dat_min==dat_max:
for i in data:
points.append((floor(x_now),floor(self.y_bottom+(self.y_top-self.y_bottom)/2)))
self.tft.circle(points[which],2,TFT.YELLOW)
self.tft.text((points[which][0]-5,points[which][1]+5),str(i),TFT.CYAN,0.5,nowrap=True)
self.tft.text((points[which][0]-5,points[which][1]-10),self.date[which][11:16],TFT.CYAN,0.6,nowrap=True)
if which>0:
self.tft.line(points[which-1],points[which],TFT.YELLOW)
which=which+1
x_now=x_now+x_dis
else:
for i in data:
points.append((floor(x_now),floor(self.y_bottom+(self.y_top-self.y_bottom)*((i-dat_min)/(dat_max-dat_min)))))
self.tft.circle(points[which],2,TFT.YELLOW)
self.tft.text((points[which][0]-5,points[which][1]+5),str(i),TFT.CYAN,0.5,nowrap=True)
self.tft.text((points[which][0]-5,points[which][1]-10),self.date[which][11:16],TFT.CYAN,0.6,nowrap=True)
if which>0:
self.tft.line(points[which-1],points[which],TFT.YELLOW)
which=which+1
x_now=x_now+x_dis
self.y_top=self.y_top-10
draw_axis(self)
if self.mode==0:
if self.last==0:
self.last=1
self.tft.text((50,45),"pres",TFT.YELLOW,1,nowrap=True)
draw_points(self,self.pres)
elif self.last==1:
self.last=2
self.tft.text((50,45),"water",TFT.YELLOW,1,nowrap=True)
draw_points(self,self.water)
elif self.last==2:
self.last=3
self.tft.text((50,45),"humi",TFT.YELLOW,1,nowrap=True)
draw_points(self,self.humi)
elif self.last==3:
self.last=0
self.tft.text((50,45),"temp",TFT.YELLOW,1,nowrap=True)
draw_points(self,self.temp)
elif self.mode==1:
self.last=0
self.tft.text((50,45),"temp",TFT.YELLOW,1,nowrap=True)
draw_points(self,self.temp)
elif self.mode==2:
self.last=1
self.tft.text((50,45),"pres",TFT.YELLOW,1,nowrap=True)
draw_points(self,self.pres)
elif self.mode==3:
self.last=2
self.tft.text((50,45),"water",TFT.YELLOW,1,nowrap=True)
draw_points(self,self.water)
elif self.mode==4:
self.last=3
self.tft.text((50,45),"humi",TFT.YELLOW,1,nowrap=True)
draw_points(self,self.humi)