I solved it. See below:
First step was removing the b' at the beginning and ' at the end
Then convert that to JSON with "loads json" block
The "loads json" for the individual elements are redundant and you just pull straight from the json variable
I'm attempting to send JSON data over MQTT and have the M5 load the different key values into labels. I haven't been successful trying it a few different ways. I think part of the problem is that a b' gets added to the beginning of both the topic an message values received by the MQTT software.
For reference, here is the updateProject function called:
And here is the JSON string i'm sending over MQTT:
{ "id": 00004578, "shape": "hex", "total": 856, "cut1": 230, "cut2": 184, "cut3": 207, "cut4": 156, "cut5": 143, "clr1": 230, "clr2": 184, "clr3": 207, "clr4": 156, "clr5": 143 }
First try was this way:
This give me an error at the line of code in the updateProject function assigning the first label value to the appropriate key/value:
TypeError: object with buffer protocol required
The second way was to remove the leading b' that gets inserted (if anyone has a better way to do this, please lmk)
This gives me an error at the line where it sets projDetails in the MQTT event:
ValueError: syntax error in JSON
The third and fourth way was trying the Dump JSON block alone and trying to remove the b'
Both cases gives the error in the first line of the updateProject function where setting the first label
TypeError: string indices must be integers, not str
Then I tried just making the variable the data minus any JSON blocks and put it off to the function to do all the work
This give me an error at the line of code in the updateProject function assigning the first label value to the appropriate key/value:
ValueError: syntax error in JSON
Not sure how to proceed on this. Any help would be greatly appreciated.
@felmue that worked! So it was just the addition of those other WiFi blocks that did it. The Serial output had said Wifi connected before, but I guess not.
@ajb2k3 I have the "MQTT Apply For Messaging" block in the Loop. Everything I have seen has the connection parts in the Setup. Are you saying I need to have the MQTT Init block from the setup in the Loop?
@felmue i couldn't get a connection to test.mosquitto.org but i could for Adafruit. I setup this connection
I get a nonsense error on the screen about some unrelated rectangle UI block in the setup about
TypeError: extra keyword arguments given
When I look at the serial data i get:
>>> E (8014) mqtt_client: Error create mqtt task
E (23515) mqtt_client: esp_mqtt_client_init(800): Memory exhausted
E (23515) mqtt_client: Client was not initialized
E (23516) mqtt_client: Client was not initialized
I have tried this several ways. with and without the https:// in the server, with keepalive values of 0 or 300, in and out of the "if connected to wifi" block. The image shows the only way I've gotten some kind of response that gets me closer.
I'm having difficulty connecting my Core Basic to MQTT using UIFlow 2.0. Here are the pertinent code blocks:
When I run it, I get the following error.
umqtt.py line 71. in connectOSerror: -203
Looking at the github, this line is the middle line of this statement for the connection procedure Connect():
if self.user is not None:
sz += 2 + len(self.user) + 2 + len(self.pswd)
msg[6] |= 0xC0
It also references the line of code for this connection block in my setup:
mqtt_client.connect(clean_session=True)
I'm trying to connect to a Mosquitto broker on a raspberry pi that allows anonymous connection (no user/pass). It appears that error stems from the user/pass variables, but they are set as None in the block so why does this even trigger? Regardless, I'm at an impasse here on how to solve the issue. Any help would be appreciated.