testing TM1637 display addition

config.py

@@ -43,11 +43,14 @@ gpio_fan = 22 # pin 15
 #   energized the safety relay. 
 
 ## Display outputs
-gpio_disp1_clk = 20 # pin 38
-gpio_disp1_dat = 21 # pin 40
 
-gpio_disp2_clk = 16 # pin 36
-gpio_disp2_dat = 26 # pin 37
+time_disp = {'type': 'TMC1637',
+             'pins': {'clock': 16, # pin 36
+                      'data': 26}} # pin 37
+
+time_disp = {'type': 'TMC1637',
+             'pins': {'clock': 20, # pin 38
+                      'data': 21}} # pin 40
 
 gpio_dotstar_clk = 19 # pin 35
 gpio_dotstar_dat = 13 # pin 33

lib/display.py

@@ -0,0 +1,27 @@
+class TM1637(object):
+	def __init__(self,
+		         clk_pin,
+		         dat_pin):
+
+		self.clk_pin = clock_pin
+		self.dat_pin = dat_pin
+
+		try:
+			import tm1637
+   			self.tm = tm1637.TM1637(clk=clk_pin,
+   								    dio=dat_pin)
+   	def temp(self,
+   		     t):
+   		self.tm.number(t)
+
+   	def time(self,
+   		     h,
+   		     m):
+   	    self.tm.numbers(h, m, True)
+
+   	def text(self,
+   		     text):
+   		self.tm.show(text[0:4])
+
+    def off(self):
+    	self.tm.write([0, 0, 0, 0])

lib/oven.py

@@ -45,6 +45,7 @@ class Output(object):
         self.GPIO.output(config.gpio_heat, self.GPIO.LOW)
         time.sleep(sleepfor)
 
+
 # FIX - Board class needs to be completely removed
 class Board(object):
     def __init__(self):

lib/ovenWatcher.py

@@ -1,7 +1,33 @@
 import threading,logging,json,time,datetime
 from oven import Oven
+from display import TM1637
+import config
+
 log = logging.getLogger(__name__)
 
+
+class Display(object):
+    def __init__(self,
+                 type,
+                 pins):
+
+        if type == "TMC1637":
+            self.disp = TM1637(pins['clock']
+                               pins['data'])
+
+    def temp(self, t):
+        self.disp.temp(t)
+
+    def time(self, h, m):
+        self.disp.time(h, m)
+
+    def off(self):
+        self.disp.off()
+
+    def text(self, text):
+        self.disp.text(text)
+
+
 class OvenWatcher(threading.Thread):
     def __init__(self,oven):
         self.last_profile = None
@@ -13,6 +39,21 @@ class OvenWatcher(threading.Thread):
         self.daemon = True
         self.oven = oven
         self.start()
+        self.time_disp = None
+        self.temp_disp = None
+
+        try:
+            self.time_disp = Display(config.time_disp['type'],
+                                     config.time_disp['pins'])
+        except NameError:
+            self.time_disp = None
+
+        try:
+            self.temp_disp = Display(config.temp_disp['type'],
+                                     config.temp_disp['pins'])
+        except NameErro:
+            self.temp_disp = None
+
 
 # FIXME - need to save runs of schedules in near-real-time
 # FIXME - this will enable re-start in case of power outage
@@ -32,6 +73,10 @@ class OvenWatcher(threading.Thread):
             else:
                 self.recording = False
             self.notify_all(oven_state)
+            if self.time_disp:
+                self.time_disp.time(oven_state['runtime'])
+            if self.temp_disp:
+                self.temp_disp.temp(oven_state['temperature'])
             time.sleep(self.oven.time_step)
    
     def lastlog_subset(self,maxpts=50):

requirements.txt

@@ -7,3 +7,4 @@ RPi.GPIO
 Adafruit-MAX31855
 Adafruit-GPIO
 websocket-client
+raspberrypi-tm1637