<![CDATA[TypeError: argument should be bytes, buffer or ASCII string, not 'NoneType']]>Trying to connect to Azure but getting TypeError: argument should be bytes, buffer or ASCII string, not 'NoneType'
for the sas key

]]>https://community.m5stack.com/topic/4014/typeerror-argument-should-be-bytes-buffer-or-ascii-string-not-nonetypeRSS for NodeWed, 11 Mar 2026 10:36:37 GMTTue, 08 Feb 2022 17:39:45 GMT60<![CDATA[Reply to TypeError: argument should be bytes, buffer or ASCII string, not 'NoneType' on Wed, 09 Feb 2022 20:54:48 GMT]]>So I loose the error but have no sign that its connecting, I have a monitor running is VSCode but it show no sign of the core connecting.

]]>https://community.m5stack.com/post/16598https://community.m5stack.com/post/16598Wed, 09 Feb 2022 20:54:48 GMT<![CDATA[Reply to TypeError: argument should be bytes, buffer or ASCII string, not 'NoneType' on Wed, 09 Feb 2022 11:10:34 GMT]]>@iamliubo Much, much better thank you!

]]>https://community.m5stack.com/post/16593https://community.m5stack.com/post/16593Wed, 09 Feb 2022 11:10:34 GMT<![CDATA[Reply to TypeError: argument should be bytes, buffer or ASCII string, not 'NoneType' on Wed, 09 Feb 2022 11:02:47 GMT]]>@ajb2k3

Is this better?
0_1644404506540_432de5e5-4245-4eef-aa72-21b27cd22a2c-image.png

]]>https://community.m5stack.com/post/16592https://community.m5stack.com/post/16592Wed, 09 Feb 2022 11:02:47 GMT<![CDATA[Reply to TypeError: argument should be bytes, buffer or ASCII string, not 'NoneType' on Wed, 09 Feb 2022 10:10:44 GMT]]>@iamliubo yeh I managed to work out that SAS stands for Secure Access String buts it’s confusing for new people to label the block as SAS when it’s actually the PCS code that has to be typed in. I’ll try the primary key tonight when I get back to the shop.

]]>https://community.m5stack.com/post/16591https://community.m5stack.com/post/16591Wed, 09 Feb 2022 10:10:44 GMT<![CDATA[Reply to TypeError: argument should be bytes, buffer or ASCII string, not 'NoneType' on Wed, 09 Feb 2022 09:33:11 GMT]]>@ajb2k3

Actually SAS is a authentication type, we use Primary Connection String calculate the sas_token, supports passing two parameters "connection_string" and "sas_token", but "sas_token" can be calculated by "connection_string", so block omits the second parameter, but connection_string is essential.
0_1644398677740_e3026aba-5cee-46db-a93a-1ec3c3376572-image.png

e.g.

azure = IoT_Hub(connection_string="xxxxxxx", sas_token="xxxxxxx")
]]>https://community.m5stack.com/post/16590https://community.m5stack.com/post/16590Wed, 09 Feb 2022 09:33:11 GMT<![CDATA[Reply to TypeError: argument should be bytes, buffer or ASCII string, not 'NoneType' on Wed, 09 Feb 2022 08:59:03 GMT]]>Thanks I have been trying to use an sas key instead of the pcs key as that what the label says. Please change sas to pcs

]]>https://community.m5stack.com/post/16588https://community.m5stack.com/post/16588Wed, 09 Feb 2022 08:59:03 GMT<![CDATA[Reply to TypeError: argument should be bytes, buffer or ASCII string, not 'NoneType' on Wed, 09 Feb 2022 06:34:36 GMT]]>Hi @ajb2k3

Please try use Primary Connection String:
0_1644388364784_6b767f55-22a2-4ca0-bbb4-069bafa1033c-image.png

]]>https://community.m5stack.com/post/16582https://community.m5stack.com/post/16582Wed, 09 Feb 2022 06:34:36 GMT<![CDATA[Reply to TypeError: argument should be bytes, buffer or ASCII string, not 'NoneType' on Wed, 09 Feb 2022 06:19:13 GMT]]>@IAMLIUBO
This is the simple code that generates the error:

0_1644387547710_Screenshot 2022-02-09 at 06.18.33.png

from m5stack import *
from m5stack_ui import *
from uiflow import *
from IoTcloud.Azure import IoT_Hub

screen = M5Screen()
screen.clean_screen()
screen.set_screen_bg_color(0xFFFFFF)

azure = IoT_Hub(connection_string='HostName=UIFlow.azure-devices.net;DeviceId=M5Stack_AWS;SharedAccessSignature=SharedAccessSignature sr=UIFlow.azure-devices.net%2Fdevices%2FM5Stack_AWS&sig=R22UG%2Bf6uGEIq4Z0Rty1QCU9OWVq5R3%2FUrOUN9ogGgE%3D&se=1644387423')

And don't worry as the string has already been locked.

]]>https://community.m5stack.com/post/16581https://community.m5stack.com/post/16581Wed, 09 Feb 2022 06:19:13 GMT<![CDATA[Reply to TypeError: argument should be bytes, buffer or ASCII string, not 'NoneType' on Wed, 09 Feb 2022 03:09:58 GMT]]>Hi,

Could you paste your code?

]]>https://community.m5stack.com/post/16580https://community.m5stack.com/post/16580Wed, 09 Feb 2022 03:09:58 GMT