devices/clock.py - master - stepone/climate-mm

devices/clock.py
143 строки5 KB
Stepan Egorov
первая загрузка
30 дек 2024, 00:13
30 дек 2024, 00:131e6f5e4
# -*- coding: utf-8 -*-
from machine import Pin, I2C
import utime
import binascii

#    the first version use i2c1
#I2C_PORT = 1
#I2C_SDA = 6
#I2C_SCL = 7

#    the new version use i2c0,if it dont work,try to uncomment the line 14 and comment line 17
#    it should solder the R3 with 0R resistor if want to use alarm function,please refer to the Sch file on waveshare Pico-RTC-DS3231 wiki
#    https://www.waveshare.net/w/upload/0/08/Pico-RTC-DS3231_Sch.pdf
I2C_PORT = 0
I2C_SDA = 20
I2C_SCL = 21

ALARM_PIN = 3


class ds3231(object):
#            13:45:00 Mon 24 May 2021
#  the register value is the binary-coded decimal (BCD) format
#               sec min hour week day month year
    NowTime = b'\x00\x45\x13\x02\x24\x05\x21'
    w  = ["Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"];
    address = 0x68
    start_reg = 0x00
    alarm1_reg = 0x07
    control_reg = 0x0e
    status_reg = 0x0f
    
    def __init__(self,i2c_port,i2c_scl,i2c_sda):
        self.bus = I2C(i2c_port,scl=Pin(i2c_scl),sda=Pin(i2c_sda))

    def set_time(self,new_time):
        hour = new_time[0] + new_time[1]
        minute = new_time[3] + new_time[4]
        second = new_time[6] + new_time[7]
        week = "0" + str(self.w.index(new_time.split(",",2)[1])+1)
        year = new_time.split(",",2)[2][2] + new_time.split(",",2)[2][3]
        month = new_time.split(",",2)[2][5] + new_time.split(",",2)[2][6]
        day = new_time.split(",",2)[2][8] + new_time.split(",",2)[2][9]
        now_time = binascii.unhexlify((second + " " + minute + " " + hour + " " + week + " " + day + " " + month + " " + year).replace(' ',''))
        #print(binascii.unhexlify((second + " " + minute + " " + hour + " " + week + " " + day + " " + month + " " + year).replace(' ','')))
        #print(self.NowTime)
        self.bus.writeto_mem(int(self.address),int(self.start_reg),now_time)
    
    def read_time(self):
        t = self.bus.readfrom_mem(int(self.address),int(self.start_reg),7)
        a = t[0]&0x7F  #second
        b = t[1]&0x7F  #minute
        c = t[2]&0x3F  #hour
        d = t[3]&0x07  #week
        e = t[4]&0x3F  #day
        f = t[5]&0x1F  #month
        print("20%x/%02x/%02x %02x:%02x:%02x %s" %(t[6],t[5],t[4],t[2],t[1],t[0],self.w[t[3]-1]))
        
    def year(self):
        t = self.bus.readfrom_mem(int(self.address),int(self.start_reg),7)
        hi = int((t[6]&0x70)/16) * 10
        lo = t[6]&0x0F
        return hi + lo
        
    def sec(self):
        t = self.bus.readfrom_mem(int(self.address),int(self.start_reg),7)
        hi = int((t[0]&0x70)/16) * 10
        lo = t[0]&0x0F
        return hi + lo
    
    def minute(self):
        t = self.bus.readfrom_mem(int(self.address),int(self.start_reg),7)
        hi = int((t[1]&0x70)/16) * 10
        lo = t[1]&0x0F
        return hi + lo
    
    def hour(self):
        t = self.bus.readfrom_mem(int(self.address),int(self.start_reg),7)
        hi = int((t[2]&0x30)/16) * 10
        lo = t[2]&0x0F
        return hi + lo
    
    def week(self):
        t = self.bus.readfrom_mem(int(self.address),int(self.start_reg),7)
        lo = t[3]&0x07
        return lo
    
    def day(self):
        t = self.bus.readfrom_mem(int(self.address),int(self.start_reg),7)
        hi = int((t[4]&0x30)/16) * 10
        lo = t[4]&0x0F
        return hi + lo
    
    def month(self):
        t = self.bus.readfrom_mem(int(self.address),int(self.start_reg),7)
        hi = int((t[5]&0x10)/16) * 10
        lo = t[5]&0x0F
        return hi + lo
    
    def day_name(self):
        t = self.bus.readfrom_mem(int(self.address),int(self.start_reg),7)
        return(self.w[t[3]-1])
    
    def set_alarm_time(self,alarm_time):
        #    init the alarm pin
        self.alarm_pin = Pin(ALARM_PIN,Pin.IN,Pin.PULL_UP)
        #    set alarm irq
        self.alarm_pin.irq(lambda pin: print("alarm1 time is up"), Pin.IRQ_FALLING)
        #    enable the alarm1 reg
        self.bus.writeto_mem(int(self.address),int(self.control_reg),b'\x05')
        #    convert to the BCD format
        hour = alarm_time[0] + alarm_time[1]
        minute = alarm_time[3] + alarm_time[4]
        second = alarm_time[6] + alarm_time[7]
        date = alarm_time.split(",",2)[2][8] + alarm_time.split(",",2)[2][9]
        now_time = binascii.unhexlify((second + " " + minute + " " + hour +  " " + date).replace(' ',''))
        #    write alarm time to alarm1 reg
        self.bus.writeto_mem(int(self.address),int(self.alarm1_reg),now_time)
        
    def temperature(self):
        t = self.bus.readfrom_mem(int(self.address),int(self.start_reg),19)
        whole = t[17]&0xFF        
        decimal = ((t[18]& 192)/64) *0.25
        temp = whole + decimal
        if (t[17]&0xFF) > 127:
            temp = temp * -1
        return temp
    
rtc = ds3231(I2C_PORT,I2C_SCL,I2C_SDA)
#rtc.set_time('02:21:20,Wednesday,2021-08-25')
for i in range(100):
    rtc.read_time()
#rtc.set_alarm_time('13:34:15,Monday,2021-05-24')
    print(rtc.sec())
    print(rtc.minute())
    print(rtc.hour())
    print(rtc.week())
    print(rtc.day())
    print(rtc.year())
    print(rtc.month())
    print(rtc.day_name())
    print(rtc.temperature())
    utime.sleep(1)