diff --git a/.idea/vcs.xml b/.idea/vcs.xml
deleted file mode 100644
index 94a25f7..0000000
--- a/.idea/vcs.xml
+++ /dev/null
@@ -1,6 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="VcsDirectoryMappings">
-    <mapping directory="$PROJECT_DIR$" vcs="Git" />
-  </component>
-</project>
\ No newline at end of file
diff --git a/DS3231.py b/DS3231.py
new file mode 100644
index 0000000..ec9a56c
--- /dev/null
+++ b/DS3231.py
@@ -0,0 +1,158 @@
+'''
+    DS3231 RTC drive
+
+    Author: shaoziyang
+    Date:   2018.3
+
+    http://www.micropython.org.cn
+'''
+from machine import I2C, Pin
+
+DS3231_I2C_ADDR   = (0x68)
+DS3231_REG_SEC    = (0x00)
+DS3231_REG_MIN    = (0x01)
+DS3231_REG_HOUR   = (0x02)
+DS3231_REG_WEEKDAY= (0x03)
+DS3231_REG_DAY    = (0x04)
+DS3231_REG_MONTH  = (0x05)
+DS3231_REG_YEAR   = (0x06)
+DS3231_REG_A1SEC  = (0x07)
+DS3231_REG_A1MIN  = (0x08)
+DS3231_REG_A1HOUR = (0x09)
+DS3231_REG_A1DAY  = (0x0A)
+DS3231_REG_A2MIN  = (0x0B)
+DS3231_REG_A2HOUR = (0x0C)
+DS3231_REG_A2DAY  = (0x0D)
+DS3231_REG_CTRL   = (0x0E)
+DS3231_REG_STA    = (0x0F)
+DS3231_REG_AGOFF  = (0x10)
+DS3231_REG_TEMP   = (0x11)
+
+PER_DISABLE = (0)
+PER_MINUTE  = (1)
+PER_HOUR    = (2)
+PER_DAY     = (3)
+PER_WEEKDAY = (4)
+PER_MONTH   = (5)
+
+class DS3231():
+    def __init__(self, i2c):
+        self.i2c = i2c
+        self.setReg(DS3231_REG_CTRL, 0x4C)
+
+    def DecToHex(self, dat):
+        return (dat//10) * 16 + (dat%10)
+
+    def HexToDec(self, dat):
+        return (dat//16) * 10 + (dat%16)
+
+    def setReg(self, reg, dat):
+        self.i2c.writeto(DS3231_I2C_ADDR, bytearray([reg, dat]))
+
+    def getReg(self, reg):
+        self.i2c.writeto(DS3231_I2C_ADDR, bytearray([reg]))
+        return self.i2c.readfrom(DS3231_I2C_ADDR, 1)[0]
+
+    def Second(self, second = None):
+        if second == None:
+            return self.HexToDec(self.getReg(DS3231_REG_SEC))
+        else:
+            self.setReg(DS3231_REG_SEC, self.DecToHex(second%60))
+
+    def Minute(self, minute = None):
+        if minute == None:
+            return self.HexToDec(self.getReg(DS3231_REG_MIN))
+        else:
+            self.setReg(DS3231_REG_MIN, self.DecToHex(minute%60))
+
+    def Hour(self, hour = None):
+        if hour == None:
+            return self.HexToDec(self.getReg(DS3231_REG_HOUR))
+        else:
+            self.setReg(DS3231_REG_HOUR, self.DecToHex(hour%24))
+
+    def Weekday(self, weekday = None):
+        if weekday == None:
+            return self.HexToDec(self.getReg(DS3231_REG_WEEKDAY))
+        else:
+            self.setReg(DS3231_REG_WEEKDAY, self.DecToHex(weekday%8))
+
+    def Day(self, day = None):
+        if day == None:
+            return self.HexToDec(self.getReg(DS3231_REG_DAY))
+        else:
+            self.setReg(DS3231_REG_DAY, self.DecToHex(day%32))
+
+    def Month(self, month = None):
+        if month == None:
+            return self.HexToDec(self.getReg(DS3231_REG_MONTH))
+        else:
+            self.setReg(DS3231_REG_MONTH, self.DecToHex(month%13))
+
+    def Year(self, year = None):
+        if year == None:
+            return self.HexToDec(self.getReg(DS3231_REG_YEAR)) + 2000
+        else:
+            self.setReg(DS3231_REG_YEAR, self.DecToHex(year%100))
+
+    def Date(self, dat = None):
+        if dat == None:
+            return [self.Year(), self.Month(), self.Day()]
+        else:
+            self.Year(dat[0]%100)
+            self.Month(dat[1]%13)
+            self.Day(dat[2]%32)
+
+    def Time(self, dat = None):
+        if dat == None:
+            return [self.Hour(), self.Minute(), self.Second()]
+        else:
+            self.Hour(dat[0]%24)
+            self.Minute(dat[1]%60)
+            self.Second(dat[2]%60)
+
+    def DateTime(self, dat = None):
+        if dat == None:
+            return self.Date() + [self.Weekday()] + self.Time()
+        else:
+            self.Year(dat[0])
+            self.Month(dat[1])
+            self.Day(dat[2])
+            self.Weekday(dat[3])
+            self.Hour(dat[4])
+            self.Minute(dat[5])
+            self.Second(dat[6])
+
+    def ALARM(self, day, hour, minute, repeat):
+        IE = self.getReg(DS3231_REG_CTRL)
+        if repeat == PER_DISABLE:
+            self.setReg(DS3231_REG_CTRL, IE & 0xFC) # disable ALARM OUT
+            return
+        IE |= 0x46
+        self.setReg(DS3231_REG_CTRL, IE)
+        M2 = M3 = M4 = 0x80
+        DT = 0
+        if repeat == PER_MINUTE:
+            pass
+        elif repeat == PER_HOUR:
+            M2 = 0
+        elif repeat == PER_DAY:
+            M2 = M3 = 0
+        else:
+            M2 = M3 = M4 = 0
+            if repeat == PER_WEEKDAY:
+                DT = 0x40
+        self.setReg(DS3231_REG_A2MIN,  self.DecToHex(minute%60)|M2)
+        self.setReg(DS3231_REG_A2HOUR, self.DecToHex(hour%24)|M3)
+        self.setReg(DS3231_REG_A2DAY,  self.DecToHex(day%32)|M4|DT)
+
+    def ClearALARM(self):
+        self.setReg(DS3231_REG_STA, 0)
+
+    def Temperature(self):
+        t1 = self.getReg(DS3231_REG_TEMP)
+        t2 = self.getReg(DS3231_REG_TEMP + 1)
+        if t1>0x7F:
+            return t1 - t2/256 -256
+        else:
+            return t1 + t2/256
diff --git a/boot.py b/boot.py
index bde15ec..e0da0eb 100644
--- a/boot.py
+++ b/boot.py
@@ -1,10 +1,13 @@
 # ssid, password
 import wifi
 import usocket as socket
+from utime import sleep
 
 # from machine import Pin, RTC
 import machine
 import network
+from DS3231 import DS3231
+import web
 
 import esp
 esp.osdebug(None)
@@ -13,89 +16,53 @@ import ure
 import uos
 import ujson
 
-# import gc
-# gc.collect()
+import gc
+gc.collect()
 
-CONFIG_FILE='schedule.json'
-def web_page(config, datetime):
-  print(datetime)
-  dt = ("%04d-%02d-%02d %02d-%02d-%02d" % (datetime[0], datetime[1], datetime[2], datetime[4], datetime[5], datetime[6]))
-  cfg_date = "2019-01-01"
-  cfg_time = "15-45"
-  cfg_1on = "00-00"
-  cfg_1off = "00-00"
-  cfg_2on = "00-00"
-  cfg_2off = "00-00"
-  if "date" in config:
-    cfg_date = config["date"]
-  if "time" in config:
-    cfg_time = config["time"]
-  if "1on" in config:
-    cfg_1on = config["1on"]
-  if "1off" in config:
-    cfg_1off = config["1off"]
-  if "2on" in config:
-    cfg_2on = config["2on"]
-  if "2off" in config:
-    cfg_2off = config["2off"]
-  html = """<html>
-    <head>
-      <title>Scheduler</title>
-      <meta name="viewport" content="width=device-width, initial-scale=1">
-      <link rel="icon" href="data:,">
-      <style>
-        html{font-family: Helvetica; display:inline-block; margin: 0px auto; text-align: center;}
-        h1{color: #0F3376; padding: 2vh;}
-        p{font-size: 1.5rem;}
-      </style>
-    </head>
-    <body>
-      <h1>CONFIG - """ + dt + """</h1> 
-      <form action="/" method="GET">
-      <p>date (e.g. 2019-05-20) <input type="text" name="date" value=""" + cfg_date + """ /></p>
-      <p>time (e.g. 18-05) <input type="text" name="time" value=""" + cfg_time + """ /></p>
-      <p>1-on <input type="text" name="1on" value=""" + cfg_1on + """ /> &nbsp;
-         1-off <input type="text" name="1off" value=""" + cfg_1off + """ /></p>
-      <p>2-on <input type="text" name="2on" value=""" + cfg_2on + """ /> &nbsp;
-         2-off <input type="text" name="2off" value=""" + cfg_2off + """ /></p>
-      <p><input type="submit" value="send" /></p>
-      </form>
-    </body>
-  </html>"""
-  return html
-
-# D1
-pin_cfgled = machine.Pin(16, machine.Pin.OUT)
-# D0
+# global variables
+## PIN
+# - D0 - Pin16 - WAKE
+# - D1 - Pin05 - I2C-SDA
+# - D2 - Pin04 - I2C-SCL
+# - D3 - Pin00 - CONFIG
+# - D4 - Pin02 - LED
+##
 pin_cfg = machine.Pin(5, machine.Pin.IN)
-# D4
 pin_led = machine.Pin(2, machine.Pin.OUT)
 
-
+CONFIG_FILE="schedule.json"
+hf = open("header.html")
+ff = open("footer.html")
+header = hf.read()
+footer = ff.read()
 config = {}
+# RTC
+rtc = machine.RTC()
+i2c = machine.I2C(scl=machine.Pin(4), sda=machine.Pin(5))
+ds = DS3231(i2c)
+tmp = ds.DateTime()
+tmp.append(0)
+rtc.datetime(tmp)
+print("rtc", rtc.datetime())
 
+
+# try loading config from filesystem
 files = uos.listdir()
 if CONFIG_FILE in files:
-  f = open(CONFIG_FILE, 'r')
+  f = open(CONFIG_FILE, "r")
   config_raw=f.read()
   config = ujson.loads(config_raw)
   f.close()
+
+for i in range(7):
+  if not config.get(i):
+    config[i] = {
+      1: {"on": {"h": 0, "m": 0}, "off": {"h": 0, "m": 0}},
+      2: {"on": {"h": 0, "m": 0}, "off": {"h": 0, "m": 0}}
+    }
+    print("initialized day: ", i)
 print("CONFIG: %s" % config)
 
-if (not "date" in config) and (not "time" in config):
-  config["date"] = "2010-01-01"
-  config["time"] = "00-00"
-d = config["date"].split("-")
-t = config["time"].split("-")
-WEEKDAY = 0
-dt = (int(d[0]), int(d[1]), int(d[2]), WEEKDAY, int(t[0]), int(t[1]), 0, 0)
-
-rtc = machine.RTC()
-rtc.datetime(dt)
-
-print("dt", dt)
-print("rtc.datetime()", rtc.datetime())
-
 
 if (pin_cfg.value() == 1):
   ssid = wifi.ssid
@@ -108,93 +75,128 @@ if (pin_cfg.value() == 1):
   while station.isconnected() == False:
     pass
 
-  print('Connection successful', station.ifconfig())
+  # print("Connection successful", station.ifconfig())
 
   # ON
-  pin_cfgled.value(0)
-  pin_led.value(1)
+  pin_led.value(0)
 
   s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
-  s.bind(('', 80))
+  s.bind(("", 80))
   s.listen(5)
 
-  print('Configuration now...')
+  print("Configuration now...")
   while True:
     conn, addr = s.accept()
-    print('Got a connection from %s' % str(addr))
-    request = conn.recv(1024)
-    request = request.decode()
-    print('Content = %s' % request)
-    reg = ure.search("date=[0-9-]+", request)
-    if reg:
-      config["date"] = reg.group(0).replace("date=", "")
-    reg = ure.search("time=[0-9-]+", request)
-    if reg:
-      config["time"] = reg.group(0).replace("time=", "")
+    req_recv = conn.recv(512)
+    req_decode = req_recv.decode()
+    req_split = req_decode.split("\n")
+    request = req_split[0]
+    print("request: ", request)
 
-    reg = ure.search("1on=[0-9-]+", request)
-    if reg:
-      config["1on"] = reg.group(0).replace("1on=", "")
+    response = ""
 
-    reg = ure.search("1off=[0-9-]+", request)
-    if reg:
-      config["1off"] = reg.group(0).replace("1off=", "")
+    mode = "default"
+    if "/config_dt" in request:
+      mode = "config_dt"
+    elif "/config_day" in request:
+      mode = "config_day"
+    elif "/favicon" in request:
+      mode = "none"
 
-    reg = ure.search("2on=[0-9-]+", request)
-    if reg:
-      config["2on"] = reg.group(0).replace("2on=", "")
+    ## config_* --> save
+    if ("config" in mode) and ("save=1" in request):
+      update = False
+      ## DATE
+      reg = ure.search("date=[0-9-]+", request)
+      if reg:
+        tmp = reg.group(0).replace("date=", "").split("-")
+        if len(tmp) == 3:
+          update = True
+          new_date = [int(tmp[0]), int(tmp[1]), int(tmp[2])]
+          ds.Date(new_date)
 
-    reg = ure.search("2off=[0-9-]+", request)
-    if reg:
-      config["2off"] = reg.group(0).replace("2off=", "")
+      ## TIME
+      reg = ure.search("time=[0-9-]+", request)
+      if reg:
+        tmp = reg.group(0).replace("time=", "").split("-")
+        if len(tmp) >= 2:
+          update = True
+          new_time = [int(tmp[0]), int(tmp[1]), 0]
+          if len(tmp) == 3:
+            new_time[2] = int(tmp[2])
+          ds.Time(new_time)
 
-    print("config:\n %s" % (ujson.dumps(config)))
+      if update:
+        update = False
+        tmp_dt = ds.DateTime()
+        tmp_dt.append(0)
+        rtc.datetime(tmp_dt)
+        print("Updated datetime", rtc.datetime())
 
-    f = open(CONFIG_FILE, 'w')
-    f.write(ujson.dumps(config))
-    f.close()
+      ## DAY
+      reg = ure.search("day=[0-6]+", request)
+      if reg:
+        update = True
+        tmp = reg.group(0).replace("day=", "")
+        day = int(tmp)
+        for p in [1, 2]:
+          # on
+          reg = ure.search(("p%d_on=[0-9-]+" % p), request)
+          if reg:
+            tmp = reg.group(0).replace(("p%d_on=" % p), "").split("-")
+            if len(tmp) == 2:
+              h = int(tmp[0])
+              m = int(tmp[1])
+              config[day][p]["on"] = {"h": h, "m": m}
+          # off
+          reg = ure.search(("p%d_off=[0-9-]+" % p), request)
+          if reg:
+            tmp = reg.group(0).replace(("p%d_off=" % p), "").split("-")
+            if len(tmp) == 2:
+              h = int(tmp[0])
+              m = int(tmp[1])
+              config[day][p]["off"] = {"h": h, "m": m}
 
-    # led_on = request.find('/?led=on')
-    # led_off = request.find('/?led=off')
-    # if led_on == 6:
-    #   print('LED ON')
-    #   ledpin.value(1)
-    # if led_off == 6:
-    #   print('LED OFF')
-    #   ledpin.value(0)
-    response = web_page(config, rtc.datetime())
-    conn.send('HTTP/1.1 200 OK\n')
-    conn.send('Content-Type: text/html\n')
-    conn.send('Connection: close\n\n')
-    conn.sendall(response)
-    conn.close()
+      if update:
+        f = open(CONFIG_FILE, "w")
+        f.write(ujson.dumps(config))
+        f.close()
+        # print("updated config:\n %s" % (ujson.dumps(config)))
+        print("updated config")
+
+    ## default
+    if mode == "default":
+      print("web_default")
+      response = header + web.default() + footer
+    ## config_dt
+    elif mode == "config_dt":
+      response = header + web.config_datetime(rtc) + footer
+    ## config_day
+    elif mode == "config_day":
+      reg = ure.search("day=[0-6-]+", request)
+      if reg:
+        tmp = reg.group(0).replace("day=", "")
+        day = int(tmp)
+        print("web_config, day ", day)
+        response = header + web.config_day(config, day) + footer
+    ## favicon
+    elif mode == "favicon":
+      print("favicon")
+      response = ""
+
+    ## send response
+    try:
+        conn.send("HTTP/1.1 200 OK\n")
+        conn.send("Content-Type: text/html\n")
+        conn.send("Connection: close\n\n")
+        conn.sendall(response)
+        sleep(1)
+        conn.close()
+        # print("connection closed successfully")
+    except:
+      print("connection closed with error")
 
 else:
-  # # set alarms
-  # WEEKDAY=0
-  # # ON
-  # alarm_on = {}
-  # tmp = config["1on"].split("-")
-  # alarm_on[0] = (int(tmp[0]), int(tmp[1]), int(tmp[2]), WEEKDAY, int(tmp[3]), int(tmp[4]), int(tmp[5]), 0)
-  # tmp = config["2on"].split("-")
-  # alarm_on[1] = (int(tmp[0]), int(tmp[1]), int(tmp[2]), WEEKDAY, int(tmp[3]), int(tmp[4]), int(tmp[5]), 0)
-  # print("alarm_on: ", alarm_on)
-  #
-  # # OFF
-  # alarm_off = {}
-  # tmp = config["1off"].split("-")
-  # alarm_off[0] = (int(tmp[0]), int(tmp[1]), int(tmp[2]), WEEKDAY, int(tmp[3]), int(tmp[4]), int(tmp[5]), 0)
-  # tmp = config["2off"].split("-")
-  # alarm_off[1] = (int(tmp[0]), int(tmp[1]), int(tmp[2]), WEEKDAY, int(tmp[3]), int(tmp[4]), int(tmp[5]), 0)
-  # print("alarm_off: ", alarm_off)
-
-  # rtc.alarm(0, alarm_on[0])
-  # rtc.alarm(1, alarm_on[1])
-  # rtc.alarm(2, alarm_off[0])
-  # rtc.alarm(3, alarm_off[1])
-  # RTC.irq(RTC.ALARM0, handler=None, wake=machine.DEEPSLEEP)
-  # machine.deepsleep()
-  # OFF
-  # pin_cfgled.on()
-  # print("Connection disabled")
-  print("running scheduler...")
+  while True:
+    print("running scheduler...")
+    sleep(1)
diff --git a/footer.html b/footer.html
new file mode 100644
index 0000000..274ba04
--- /dev/null
+++ b/footer.html
@@ -0,0 +1,9 @@
+<p> Configure
+    <a href="/config_dt">Date/Time</a> |
+    <a href="/config_day?select_day=0">Mon</a> | <a href="/config_day?select_day=1">Tue</a> |
+    <a href="/config_day?select_day=2">Wed</a> | <a href="/config_day?select_day=3">Thu</a> |
+    <a href="/config_day?select_day=4">Fri</a> | <a href="/config_day?select_day=5">Sat</a> |
+    <a href="/config_day?select_day=6">Sun</a>
+</p>
+</body>
+</html>
\ No newline at end of file
diff --git a/header.html b/header.html
new file mode 100644
index 0000000..6d7aac5
--- /dev/null
+++ b/header.html
@@ -0,0 +1,15 @@
+<html>
+<head>
+    <title>SCHEDULE CONFIGURATION</title>
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+    <link rel="icon" href="data:,">
+    <style>
+        html{font-family: Helvetica; display:inline-block; margin: 0px auto; text-align: center;}
+        body { background-color: #ffffff; color: #000000; }
+        h1{color: #002b36; padding: 2vh;}
+        h2{color: #073642; padding: 2vh;}
+        p{font-size: 1.5rem;}
+      </style>
+</head>
+<body>
+<h1>SCHEDULE CONFIGURATION </h1>
diff --git a/web.py b/web.py
new file mode 100644
index 0000000..8d8c689
--- /dev/null
+++ b/web.py
@@ -0,0 +1,37 @@
+days = ["Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"]
+def default():
+  content = """ <h3> select item below </h3> """
+  return content
+
+def config_datetime(rtc):
+  dt = rtc.datetime()
+  d = ("%04d-%02d-%02d" % (dt[0], dt[1], dt[2]))
+  t = ("%02d-%02d-%02d" % (dt[4], dt[5], dt[6]))
+
+  content = """ 
+    <form action="/config_dt" method="GET">
+    <h2>Date/Time (Only fill to update current date/time!)</h2>
+    <p>current date: """ + d + """ &nbsp; current time: """ + t + """ </p>
+    <input type="hidden" name="save" value="1" />
+    <p>new date: <input type="text" name="date" value="" /> &nbsp;
+       new time: <input type="text" name="time" value="" /></p>
+    <p><input type="reset" value="reset"> &nbsp; <input type="submit" value="save" /></p>
+    </form>
+  """
+  return content
+
+def config_day(config, day):
+  content = """
+    <form action="/config_day" method="GET">
+    <h2>Power-on/off (hh-mm) </h2>
+    <h3> Selected: """ + days[day] + """</h3>
+    <input type="hidden" name="save" value="1" />
+    <input type="hidden" name="day" value=""" + ("%s" % day) + """ />
+    <p>P1-On <input type="text" name="p1_on" value=""" + ("%02d-%02d" % (config[day][1]["on"]["h"], config[day][1]["on"]["m"])) + """ /> &nbsp;
+       P1-Off <input type="text" name="p1_off" value=""" + ("%02d-%02d" % (config[day][1]["off"]["h"], config[day][1]["off"]["m"])) + """ /> </p>
+    <p>P2-On <input type="text" name="p2_on" value="""   + ("%02d-%02d" % (config[day][2]["on"]["h"], config[day][2]["on"]["m"]))  + """ /> &nbsp;
+       P2-Off <input type="text" name="p2_off" value=""" + ("%02d-%02d" % (config[day][2]["off"]["h"], config[day][2]["off"]["m"])) + """ /> </p>
+    <p><input type="reset" value="reset"> &nbsp; <input type="submit" value="save" /></p>
+    </form>
+  """
+  return content