working static, marquee and pan
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@ -11,8 +11,8 @@ __TOPIC_SCROLL_INTERVAL__ = "scrollinterval"
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__TOPIC_TEXT_STATIC__ = "textstatic"
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__TOPIC_TEXT_ONCE__ = "textonce"
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__TOPIC_TEXT_SCROLL__ = "textscroll"
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__TOPIC_TEXT_SCROLL_REPEAT__ = "textscrollrepeat"
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__TOPIC_TEXT_SCROLL_LR__ = "textscrolllr"
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__TOPIC_TEXT_MARQUEE__ = "textmarquee"
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__TOPIC_TEXT_PAN__ = "textpan"
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NUMDIGITS = 8
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@ -20,21 +20,25 @@ class Mode(Enum):
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STATIC = 1 #show text constantly. may cut digits
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ONCE = 3 #show once for some time
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SCROLL = 2 #scroll thorugh once
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SCROLL_LR = 4 #scroll back and forth
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SCROLL_REPEAT = 5
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PAN = 4 #scroll back and forth
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MARQUEE = 5
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class Controller:
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connected = False
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displayL = None
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displayR = None
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last_scrollupdate = 0
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mode = Mode.STATIC
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def __init__(self, base_topic, mqtt_host, mqtt_port = 1883):
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self.scroll_interval = 0.25
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self.text = " "
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self.text_last = ""
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self.poscount = 0
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self.last_scrollupdate = 0
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self.mode = Mode.STATIC
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# Create the I2C interface.
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self.i2c = busio.I2C(board.SCL, board.SDA)
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@ -90,24 +94,29 @@ class Controller:
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else:
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print("error not >0.0: ", val)
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if message.topic.endswith(__TOPIC_TEXT_STATIC__ + "/set"):
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self.mode = Mode.STATIC
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self.text = msg.ljust(NUMDIGITS)
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print("changed text to ", self.text)
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self.mqtt.publish(self.topic + "/" + __TOPIC_TEXT_STATIC__, self.text, 1 )
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if message.topic.endswith(__TOPIC_TEXT_SCROLL_REPEAT__ + "/set"):
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self.mode = Mode.SCROLL_REPEAT
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if message.topic.endswith(__TOPIC_TEXT_MARQUEE__ + "/set"):
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self.mode = Mode.MARQUEE
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self.poscount = 0 #start at beginning of new text
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self.text = msg
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if len(self.text)==0:
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self.text=" "
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for i in range(NUMDIGITS):
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self.text = " "+self.text+" " #add spaces left and right for marquee to enter and leave the full frame
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print("changed text to ", self.text)
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self.mqtt.publish(self.topic + "/" + __TOPIC_TEXT_SCROLL_REPEAT__, self.text, 1 )
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self.mqtt.publish(self.topic + "/" + __TOPIC_TEXT_MARQUEE__, self.text, 1 )
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if message.topic.endswith(__TOPIC_TEXT_SCROLL_LR__ + "/set"):
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self.mode = Mode.SCROLL_LR
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if message.topic.endswith(__TOPIC_TEXT_PAN__ + "/set"):
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self.mode = Mode.PAN
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self.poscount = 0 #start at beginning of new text
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self.text = msg
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if len(self.text)==0:
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self.text=" "
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for i in range(int(NUMDIGITS/4)):
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self.text = " "+self.text+" " #add spaces left and right for marquee to enter and leave the full frame
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print("changed text to ", self.text)
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self.mqtt.publish(self.topic + "/" + __TOPIC_TEXT_SCROLL_LR__, self.text, 1 )
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self.mqtt.publish(self.topic + "/" + __TOPIC_TEXT_PAN__, self.text, 1 )
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def on_connect(self, client, userdata, flags, rc):
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@ -115,36 +124,68 @@ class Controller:
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self.mqtt.subscribe(self.topic + "/#")
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self.connected = True
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def displayTextOffset(self, _text, _offset = 0, _wrap=True):
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while len(_text)<NUMDIGITS:
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_text+=" "
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def writeSegment(self, _digit, _char, clear=False):
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if _digit>=0 and _digit<4:
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if clear:
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self.displayL[_digit]=' '
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self.displayL[_digit] = _char
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elif _digit<8:
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if clear:
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self.displayR[_digit-4]=' '
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self.displayR[_digit-4] = _char
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def displayTextOffset(self, _text, _offset = 0):
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# This function is needed because library print functions only work for a single display module. This function handles the '.' character with its special cases.
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_text+=" " #append NUMDIGITS spaces at end for when scrolling past end
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_text=_text[_offset:] #move by offset
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i=0 #counter for reading pos
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d=0 #counter for writing segment pos
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while d<NUMDIGITS and i<len(_text):
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if _text[i]=='.' and _text[max(0,i-1)]=='.': #is dot and was before (or is at start)
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self.writeSegment(d,_text[i],True)
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d+=1
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i+=1
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if _wrap:
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self.displayL[0] = _text[((_offset+0)%len(_text))]
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self.displayL[1] = _text[((_offset+1)%len(_text))]
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self.displayL[2] = _text[((_offset+2)%len(_text))]
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self.displayL[3] = _text[((_offset+3)%len(_text))]
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self.displayR[0] = _text[((_offset+4)%len(_text))]
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self.displayR[1] = _text[((_offset+5)%len(_text))]
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self.displayR[2] = _text[((_offset+6)%len(_text))]
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self.displayR[3] = _text[((_offset+7)%len(_text))]
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else:
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if _offset+0>=0 and _offset+0<len(_text):
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self.displayL[0] = _text[((_offset+0))]
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if _offset+1>=0 and _offset+1<len(_text):
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self.displayL[1] = _text[((_offset+1))]
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if _offset+2>=0 and _offset+2<len(_text):
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self.displayL[2] = _text[((_offset+2))]
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if _offset+3>=0 and _offset+3<len(_text):
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self.displayL[3] = _text[((_offset+3))]
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if _offset+4>=0 and _offset+4<len(_text):
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self.displayR[0] = _text[((_offset+4))]
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if _offset+5>=0 and _offset+5<len(_text):
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self.displayR[1] = _text[((_offset+5))]
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if _offset+6>=0 and _offset+6<len(_text):
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self.displayR[2] = _text[((_offset+6))]
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if _offset+7>=0 and _offset+7<len(_text):
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self.displayR[3] = _text[((_offset+7))]
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if _text[i]!='.' : #normal char
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self.writeSegment(d,_text[i])
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i+=1
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if i<len(_text):
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if _text[i]=='.': #dot, but can be appended to last char
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self.writeSegment(d,_text[i])
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i+=1
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d+=1
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def seglen(self, _text): #len function but optimized for 14-segment display
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i=0 #counter for reading pos
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d=0 #counter for writing segment pos
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while i<len(_text):
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if _text[i]=='.' and _text[max(0,i-1)]=='.': #is dot and was before (or is at start)
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d+=1
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i+=1
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else:
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if _text[i]!='.' : #normal char
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i+=1
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if i<len(_text):
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if _text[i]=='.': #dot, but can be appended to last char
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i+=1
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d+=1
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return d
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def loop_forever(self):
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run = True
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@ -153,28 +194,33 @@ class Controller:
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self.mqtt.loop(0.1) #with block timeout
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if self.displayL is not None and self.displayR is not None: #displays initialized
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if self.mode == Mode.SCROLL_REPEAT:
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if time.time() > self.last_scrollupdate+self.scroll_interval: #time to update animation
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self.displayTextOffset(self.text, self.poscount, True)
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if self.mode == Mode.STATIC:
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if self.text != self.text_last: #time to update animation
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self.displayTextOffset(self.text, 0)
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if self.mode == Mode.MARQUEE:
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if time.time() > self.last_scrollupdate+self.scroll_interval or self.text != self.text_last: #time to update animation
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self.displayTextOffset(self.text, self.poscount)
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self.poscount += 1
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self.poscount %= len(self.text)
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self.poscount %= max(1,int(self.seglen(self.text)-NUMDIGITS+1))
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self.last_scrollupdate = time.time()
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if self.mode == Mode.SCROLL_LR:
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if time.time() > self.last_scrollupdate+self.scroll_interval: #time to update animation
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if self.mode == Mode.PAN:
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if time.time() > self.last_scrollupdate+self.scroll_interval or self.text != self.text_last: #time to update animation
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print("pos=", self.poscount)
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scrolloffset = self.poscount
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if scrolloffset >= (len(self.text)-NUMDIGITS):
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scrolloffset = (len(self.text)-NUMDIGITS) - (scrolloffset-(len(self.text)-NUMDIGITS)) #reverse
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if scrolloffset >= (self.seglen(self.text)-NUMDIGITS):
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scrolloffset = (self.seglen(self.text)-NUMDIGITS) - (scrolloffset-(self.seglen(self.text)-NUMDIGITS)) #reverse
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scrolloffset = max(0,scrolloffset) #cap at zero
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print("scrolloffset=", scrolloffset)
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self.displayTextOffset(self.text, scrolloffset, False)
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self.displayTextOffset(self.text, scrolloffset)
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self.poscount += 1
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self.poscount %= (len(self.text)-NUMDIGITS)*2 #if poscount over scrollable width means scroll backwards
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self.poscount %= (self.seglen(self.text)-NUMDIGITS)*2 #if poscount over scrollable width means scroll backwards
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self.last_scrollupdate = time.time()
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self.text_last = self.text
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