Adding temp monitor code

2014-10-15 23:18:47 -07:00 · 2014-10-15 23:18:47 -07:00 · 0ca929ce96
commit 0ca929ce96
--- a/BOM.ods
+++ b/BOM.ods
--- a/kiln/Adafruit_alphanumeric.py
+++ b/kiln/Adafruit_alphanumeric.py
@ -12,162 +12,162 @@ from Adafruit_LEDBackpack import LEDBackpack
 # displays available from Adafruit

 class Alphanumeric(object):
-  disp = None
+    disp = None
 
-  # Hexadecimal character lookup table
-  lut = [
-0b0000000000000001,
-0b0000000000000010,
-0b0000000000000100,
-0b0000000000001000,
-0b0000000000010000,
-0b0000000000100000,
-0b0000000001000000,
-0b0000000010000000,
-0b0000000100000000,
-0b0000001000000000,
-0b0000010000000000,
-0b0000100000000000,
-0b0001000000000000,
-0b0010000000000000,
-0b0100000000000000,
-0b1000000000000000,
-0b0000000000000000,
-0b0000000000000000,
-0b0000000000000000,
-0b0000000000000000,
-0b0000000000000000,
-0b0000000000000000,
-0b0000000000000000,
-0b0000000000000000,
-0b0001001011001001,
-0b0001010111000000,
-0b0001001011111001,
-0b0000000011100011,
-0b0000010100110000,
-0b0001001011001000,
-0b0011101000000000,
-0b0001011100000000,
-0b0000000000000000, #
-0b0000000000000110, # !
-0b0000001000100000, # "
-0b0001001011001110, # #
-0b0001001011101101, # $
-0b0000110000100100, # %
-0b0010001101011101, # &
-0b0000010000000000, # '
-0b0010010000000000, # (
-0b0000100100000000, # )
-0b0011111111000000, # *
-0b0001001011000000, # +
-0b0000100000000000, # ,
-0b0000000011000000, # -
-0b0000000000000000, # .
-0b0000110000000000, # /
-0b0000110000111111, # 0
-0b0000000000000110, # 1
-0b0000000011011011, # 2
-0b0000000010001111, # 3
-0b0000000011100110, # 4
-0b0010000001101001, # 5
-0b0000000011111101, # 6
-0b0000000000000111, # 7
-0b0000000011111111, # 8
-0b0000000011101111, # 9
-0b0001001000000000, # :
-0b0000101000000000, # ;
-0b0010010000000000, # <
-0b0000000011001000, # =
-0b0000100100000000, # >
-0b0001000010000011, # ?
-0b0000001010111011, # @
-0b0000000011110111, # A
-0b0001001010001111, # B
-0b0000000000111001, # C
-0b0001001000001111, # D
-0b0000000011111001, # E
-0b0000000001110001, # F
-0b0000000010111101, # G
-0b0000000011110110, # H
-0b0001001000000000, # I
-0b0000000000011110, # J
-0b0010010001110000, # K
-0b0000000000111000, # L
-0b0000010100110110, # M
-0b0010000100110110, # N
-0b0000000000111111, # O
-0b0000000011110011, # P
-0b0010000000111111, # Q
-0b0010000011110011, # R
-0b0000000011101101, # S
-0b0001001000000001, # T
-0b0000000000111110, # U
-0b0000110000110000, # V
-0b0010100000110110, # W
-0b0010110100000000, # X
-0b0001010100000000, # Y
-0b0000110000001001, # Z
-0b0000000000111001, # [
-0b0010000100000000, #
-0b0000000000001111, # ]
-0b0000110000000011, # ^
-0b0000000000001000, # _
-0b0000000100000000, # `
-0b0001000001011000, # a
-0b0010000001111000, # b
-0b0000000011011000, # c
-0b0000100010001110, # d
-0b0000100001011000, # e
-0b0000000001110001, # f
-0b0000010010001110, # g
-0b0001000001110000, # h
-0b0001000000000000, # i
-0b0000000000001110, # j
-0b0011011000000000, # k
-0b0000000000110000, # l
-0b0001000011010100, # m
-0b0001000001010000, # n
-0b0000000011011100, # o
-0b0000000101110000, # p
-0b0000010010000110, # q
-0b0000000001010000, # r
-0b0010000010001000, # s
-0b0000000001111000, # t
-0b0000000000011100, # u
-0b0010000000000100, # v
-0b0010100000010100, # w
-0b0010100011000000, # x
-0b0010000000001100, # y
-0b0000100001001000, # z
-0b0000100101001001, # {
-0b0001001000000000, # |
-0b0010010010001001, # }
-0b0000010100100000, # ~
-0b0011111111111111]
+    # Hexadecimal character lookup table
+    lut = [
+        0b0000000000000001,
+        0b0000000000000010,
+        0b0000000000000100,
+        0b0000000000001000,
+        0b0000000000010000,
+        0b0000000000100000,
+        0b0000000001000000,
+        0b0000000010000000,
+        0b0000000100000000,
+        0b0000001000000000,
+        0b0000010000000000,
+        0b0000100000000000,
+        0b0001000000000000,
+        0b0010000000000000,
+        0b0100000000000000,
+        0b1000000000000000,
+        0b0000000000000000,
+        0b0000000000000000,
+        0b0000000000000000,
+        0b0000000000000000,
+        0b0000000000000000,
+        0b0000000000000000,
+        0b0000000000000000,
+        0b0000000000000000,
+        0b0001001011001001,
+        0b0001010111000000,
+        0b0001001011111001,
+        0b0000000011100011,
+        0b0000010100110000,
+        0b0001001011001000,
+        0b0011101000000000,
+        0b0001011100000000,
+        0b0000000000000000, #
+        0b0000000000000110, # !
+        0b0000001000100000, # "
+        0b0001001011001110, # #
+        0b0001001011101101, # $
+        0b0000110000100100, # %
+        0b0010001101011101, # &
+        0b0000010000000000, # '
+        0b0010010000000000, # (
+        0b0000100100000000, # )
+        0b0011111111000000, # *
+        0b0001001011000000, # +
+        0b0000100000000000, # ,
+        0b0000000011000000, # -
+        0b0000000000000000, # .
+        0b0000110000000000, # /
+        0b0000110000111111, # 0
+        0b0000000000000110, # 1
+        0b0000000011011011, # 2
+        0b0000000010001111, # 3
+        0b0000000011100110, # 4
+        0b0010000001101001, # 5
+        0b0000000011111101, # 6
+        0b0000000000000111, # 7
+        0b0000000011111111, # 8
+        0b0000000011101111, # 9
+        0b0001001000000000, # :
+        0b0000101000000000, # ;
+        0b0010010000000000, # <
+        0b0000000011001000, # =
+        0b0000100100000000, # >
+        0b0001000010000011, # ?
+        0b0000001010111011, # @
+        0b0000000011110111, # A
+        0b0001001010001111, # B
+        0b0000000000111001, # C
+        0b0001001000001111, # D
+        0b0000000011111001, # E
+        0b0000000001110001, # F
+        0b0000000010111101, # G
+        0b0000000011110110, # H
+        0b0001001000000000, # I
+        0b0000000000011110, # J
+        0b0010010001110000, # K
+        0b0000000000111000, # L
+        0b0000010100110110, # M
+        0b0010000100110110, # N
+        0b0000000000111111, # O
+        0b0000000011110011, # P
+        0b0010000000111111, # Q
+        0b0010000011110011, # R
+        0b0000000011101101, # S
+        0b0001001000000001, # T
+        0b0000000000111110, # U
+        0b0000110000110000, # V
+        0b0010100000110110, # W
+        0b0010110100000000, # X
+        0b0001010100000000, # Y
+        0b0000110000001001, # Z
+        0b0000000000111001, # [
+        0b0010000100000000, #
+        0b0000000000001111, # ]
+        0b0000110000000011, # ^
+        0b0000000000001000, # _
+        0b0000000100000000, # `
+        0b0001000001011000, # a
+        0b0010000001111000, # b
+        0b0000000011011000, # c
+        0b0000100010001110, # d
+        0b0000100001011000, # e
+        0b0000000001110001, # f
+        0b0000010010001110, # g
+        0b0001000001110000, # h
+        0b0001000000000000, # i
+        0b0000000000001110, # j
+        0b0011011000000000, # k
+        0b0000000000110000, # l
+        0b0001000011010100, # m
+        0b0001000001010000, # n
+        0b0000000011011100, # o
+        0b0000000101110000, # p
+        0b0000010010000110, # q
+        0b0000000001010000, # r
+        0b0010000010001000, # s
+        0b0000000001111000, # t
+        0b0000000000011100, # u
+        0b0010000000000100, # v
+        0b0010100000010100, # w
+        0b0010100011000000, # x
+        0b0010000000001100, # y
+        0b0000100001001000, # z
+        0b0000100101001001, # {
+        0b0001001000000000, # |
+        0b0010010010001001, # }
+        0b0000010100100000, # ~
+        0b0011111111111111]
+                
+    special = dict(degree= 0b0000000011100011, cone=0b0010100000001000)
    
-  special = dict(degree= 0b0000000011100011, cone=0b0010100000001000)
-  
-  # Constructor
-  def __init__(self, address=0x70, debug=False):
-    self.disp = LEDBackpack(address=address, debug=debug)
+    def __init__(self, address=0x70, debug=False):
+        self.disp = LEDBackpack(address=address, debug=debug)

-  def writeCharRaw(self, charNumber, value):
-    "Sets a digit using the raw 16-bit value"
-    if (charNumber > 4):
-      return
-    # Set the appropriate digit
-    self.disp.setBufferRow(charNumber, value)
+    def writeCharRaw(self, charNumber, value):
+        "Sets a digit using the raw 16-bit value"
+        if (charNumber > 4):
+            return
+        # Set the appropriate digit
+        self.disp.setBufferRow(charNumber, value)
+
+    def writeChar(self, charNumber, value, dot=False):
+        "Sets a single decimal or hexademical value (0..9 and A..F)"
+        if (charNumber > 4):
+            return
+        if value in special:
+            value = self.special[value]
+        else:
+            value = self.lut[ord(value)]
+        # Set the appropriate digit
+        self.disp.setBufferRow(charNumber, value | (dot << 14))

-  def writeChar(self, charNumber, value, dot=False):
-    "Sets a single decimal or hexademical value (0..9 and A..F)"
-    if (charNumber > 4):
-      return
-    if value in special:
-      value = self.special[value]
-    else:
-      value = self.lut[ord(value)]
-    # Set the appropriate digit
-    self.disp.setBufferRow(charNumber, value | (dot << 14))

 class AlphaScoller(threading.Thread):
    def __init__(self, address=0x70, interval=.25):
@ -175,6 +175,7 @@ class AlphaScoller(threading.Thread):
        self.disp = Alphanumeric(address)
        super(AlphaScroller, self).__init__()
        self.value = "    "
+        self.counter = 0
    
    def set_text(self, text, pad=True):
        self.text = text
@ -186,11 +187,9 @@ class AlphaScoller(threading.Thread):
        self.interval = interval
    
    def run(self):
-        counter = 0
        while True:
            for i in range(4):
-                char = self.value[(counter+i) % len(self.value)]
+                char = self.value[(self.counter+i) % len(self.value)]
                self.disp.writeChar(i, char)
            time.sleep(interval)
-            counter += 1
-
+            self.counter += 1
--- a/kiln/thermo.py
+++ b/kiln/thermo.py
@ -0,0 +1,55 @@
+import time
+import threading
+import datetime
+from collections import deque
+
+def temp_to_cone(temp):
+    """Convert the current temperature to cone value using linear interpolation"""
+    cones = [600,614,635,683,717,747,792,804,838,852,884,894,900,923,955,984,999,1046,1060,1101,1120,1137,1154,1162,1168,1186,1196,1222,1240,1263,1280,1305,1315,1326,1346]
+    names = [str(i).replace('-', '0') for i in range(-22,0)] + [str(i) for i in range(1, 14)]
+    for i in range(len(cones)-1):
+        low, high = cones[i], cones[i+1]
+        if low <= temp < high:
+            frac = (temp - low) / float(high - low)
+            return names[i]+'.%d'%int(frac*10)
+    return "13+"
+
+class Monitor(threading.Thread):
+    def __init__(self, name="3b-000000182b57"):
+        self.device = "/sys/bus/w1/devices/%s/w1_slave"%name
+        self.history = deque(maxlen=1024)
+
+        from Adafruit_alphanumeric import AlphaScroller
+        self.display = AlphaScroller(interval=.4)
+        self.display.start()
+
+    def _read_temp(self):
+        with open(self.device, 'r') as f:
+            lines = f.readlines()
+
+        while lines[0].strip()[-3:] != 'YES':
+            time.sleep(0.2)
+            with open(self.device, 'r') as f:
+                lines = f.readlines()
+
+        match = re.match(r'^[0-9a-f\s]{27}t=(\d+)$', lines[1])
+        if match is not None:
+            return float(match.group(1)) / 1000.0
+
+    @property
+    def temperature(self):
+        return self.history[-1][1]
+
+    def run(self):
+        while True:
+            temp = self._read_temp()
+            fahr = temp * 9. / 5. + 32.
+            now = datetime.datetime()
+            self.history.append((now, temp))
+            
+            text = list('%0.0f'%temp) + ['degree'] + list('C  %0.0f'%fahr)+['degree'] + list("F")
+
+            if 600 <= temp:
+                text += [' ', ' ', 'cone']+list("%0.1f"%temp_to_cone(temp))
+            text += '    '
+            self.display.text = text