Search found 3 matches

by etc3
Sat Mar 27, 2021 1:20 am
Forum: Programs, Libraries and Tools
Topic: Sparkplug_b MQTT protocol support
Replies: 1
Views: 1381

Sparkplug_b MQTT protocol support

Is anyone aware of micropython support for MQTT Sparkplug_b industrial data definition protocol? The project https://github.com/eclipse/tahu has the details and a standard python client library, but we are interested in using this protocol with micropython. Porting may be an option but there appears...
by etc3
Sat Feb 20, 2021 7:40 pm
Forum: General Discussion and Questions
Topic: does uart.read(1) flush rx buffer
Replies: 2
Views: 1929

Re: does uart.read(1) flush rx buffer

Thank you for the insight. Did a quick test to measure the max execution time of the while True loop and indeed it measured 11mSec max. So, if characters are arriving every 1.04mSec (9600 baud) and coming out slower than that at some point the rxbuffer will run out of space, just as you expected.
by etc3
Sat Feb 20, 2021 4:43 pm
Forum: General Discussion and Questions
Topic: does uart.read(1) flush rx buffer
Replies: 2
Views: 1929

does uart.read(1) flush rx buffer

We are using esp32 and trying to read 900 characters from the uart at 9600 baud. A typical way to do this is to read one character at a tim e as they arrive in the uart and store it. We seem to need to increase the uart rxbuffer size to at least 900 for this to work reliably. Example is below: while...