Poor mans SkyConnect: MGM21 + CP2104 DIY | Home Assistant | Page 1

shy nebula Jul 15, 2023, 11:43 AM

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Unfortunately I cannot find any schematic for the skyconnect. Which pins are connected to the CP2104? I guess if I work these out and flash the module I should pretty much have an equivalent with parts that I already have at home.

ripe nexus Jul 15, 2023, 2:07 PM

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You can look at the pins defined in the fw build repo in the patch files. Note you will need to have the exact same efr32 chip for the skyconnect fw to work. May just be easier to follow the uart example in the datasheet and the uart ncp example in the sdk/simplicity studio

shy nebula Jul 15, 2023, 2:18 PM

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ah yeah that makes sense, thanks!

shy nebula Jul 16, 2023, 8:30 PM

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ripe nexus You can look at the pins defined in the fw build repo in the patch files. Note y...

I just tried to find that repo, but all I could find are binaries. you don't happen to have a link for that repo, do you?

ripe nexus Jul 16, 2023, 11:12 PM

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https://github.com/NabuCasa/silabs-firmware-builder/tree/main/EmberZNet/SkyConnect

shy nebula Jul 17, 2023, 6:38 AM

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ohhhh! Thank you! -

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Now I only need to get simplicity studio to cooperate. this is such a clumsy slow dinosaur of software

shy nebula Feb 17, 2024, 3:58 PM

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So I finally took a day off to update SimplicityStudio5, buildt a bunch of RCP examples, assigned pins to USART0, flashed my MCU, hooked it to a CP2102 and tried to start my OTBR integration in HA-OS, and unfortunately it fails.

#Poor mans SkyConnect: MGM21 + CP2104 DIY