- add startat parameter to profile runs to allow for restarting at any point in a run. handle power outages, accidently hitting stop button etc.

api.md

@@ -1,2 +1,9 @@
+# start a run
+
 curl -d '{"cmd":"run", "profile":"cone-05-lo"}' -H "Content-Type: application/json" -X POST http://0.0.0.0:8081/api
 
+# skip the first part of a run
+# restart the kiln on a specific profile and start at minute 60
+
+curl -d '{"cmd":"run", "profile":"cone-05-lo","startat":60}' -H "Content-Type: application/json" -X POST http://0.0.0.0:8081/api
+

kiln-controller.py

@@ -51,6 +51,12 @@ def handle_api():
         wanted = bottle.request.json['profile']
         log.info('api requested run of profile = %s' % wanted)
 
+        # start at a specific minute in the schedule
+        # for restarting and skipping over early parts of a schedule
+        startat = 0;      
+        if 'startat' in bottle.request.json:
+            startat = bottle.request.json['startat']
+
         # get the wanted profile/kiln schedule
         profile = find_profile(wanted)
         if profile is None:
@@ -59,7 +65,7 @@ def handle_api():
         # FIXME juggling of json should happen in the Profile class
         profile_json = json.dumps(profile)
         profile = Profile(profile_json)
-        oven.run_profile(profile)
+        oven.run_profile(profile,startat=startat)
         ovenWatcher.record(profile)
     return { "success" : True }
 

lib/oven.py

@@ -86,12 +86,13 @@ class Oven (threading.Thread):
         self.set_heat(False)
         self.pid = PID(ki=config.pid_ki, kd=config.pid_kd, kp=config.pid_kp)
 
-    def run_profile(self, profile):
+    def run_profile(self, profile, startat=0):
         log.info("Running schedule %s" % profile.name)
         self.profile = profile
         self.totaltime = profile.get_duration()
         self.state = Oven.STATE_RUNNING
         self.start_time = datetime.datetime.now()
+        self.startat = startat * 60
         log.info("Starting")
 
     def abort_run(self):
@@ -108,7 +109,10 @@ class Oven (threading.Thread):
                     self.runtime += 0.5
                 else:
                     runtime_delta = datetime.datetime.now() - self.start_time
-                    self.runtime = runtime_delta.total_seconds()
+                    if self.startat > 0:
+                        self.runtime = self.startat + runtime_delta.total_seconds();
+                    else:
+                        self.runtime = runtime_delta.total_seconds()
 
                 self.target = self.profile.get_target_temperature(self.runtime)
                 pid = self.pid.compute(self.target, self.temp_sensor.temperature)