Global Moderators

PaHub or Port A Hub is for use with I2C devices.
Hall Unit is a Pb Device aka Port B Device (the connector collar tell you what port it connect to) for the Hall sensor you need a PbHub.

Nope, you have deep fried it, the poor thing was only rated at 3.3v

Hello @BennoB

I can confirm that the UiFlow example doesn't work for me either. The block to connect to MQTT seems to be broken or not properly adapted for the SIM7020.

@m5stack : please fix. Thank you.

Thanks
Felix

Hello @frittna

FWIW: here in Switzerland both URLs work for me.

Thanks
Felix

DuPont or 2.54 is the standees size for headers and connectors. For the ‘-Bus internal connector you need an I/o breakout board or base as the connector is shallow to save space.

Hello @aezero

I am glad to hear you found a solution. And thank you for sharing.

BTW: for me a rate limit of 10 reduces the download time (from about 70 s to 55 s).

Thanks
Felix

Hello @aezero

just to be clear, with your setup, the firmware update always fails, correct?

• Does your code have tasks (other than the mandatory loop())?
• Is your power source stable?

Thanks
Felix

Hello @BennoB

have you tried to run the example without modification, e.g. connecting to mqtt.m5stack.com as a test? Does that work?

Thanks
Felix

Hello @aezero

hmm, not sure why your sketch is taking longer (unless the firmware is bigger).

I think if you want to decouple the flash from the download process you'd need to look into examples using SPIFFS. However in my opinion this is kind of redundant as SPIFFS is in flash as well. So the download would go into SPIFFS first and then copy from flash to flash. (Unless I am missing something.)

When I check with tcpdump on my server I see it reading multiple small chunks over the period of the download (about 37s). In other words I don't think there is a buffer on the way or in the modem in my case.

Are you using the default modem.restart();? I found it can take quite some time for the modem to be ready after that. Plus the modem sometimes sends some unsolicited messages (e.g. +CPIN: READY, SMS DONE, PB DONE) as well which I think might interfere with the download.

You could try using modem.init(); instead and / or add some sort of delay / check if the modem is ready or not. I've added the following line modem.testAT(30000); before String modemInfo = modem.getModemInfo(); which helped the download when using a SIM7600G.

BTW: from what I can tell my setup uses CGNAT IP starts with 10.x.x.x.

Thanks
Felix

P.S. github example updated

Hello @RIDDSprojects

is your M5Stack running the latest UiFlow firmware (v1.10.9)? You can install it with M5Burner v3.0.

Thanks
Felix