Project to enable Bosch + Garmin integration

[saitrix]

Please see my log of me turning on and off a gen 5 cx with 800wh.

Download SmartBridge_20260613_142201.csv | LimeWire

Download SmartBridge_20260613_142201.csv on LimeWire

limewire.com

 

[HexagonSun]

Thanks @saitrix - that confirms that the cx sends the same info as the sx, including the battery you've got. Just need to understand how it handles the powermore to deal with that, then I'm good to go for a fancier range estimate.

 

[notshy]

@HexagonSun - my bike is just with the mechanic at the moment but I've downloaded the new app and also flashed the new SmartBridge code.

It might be helpful for N00b Coders like me to have a few bullets on the quickest way to upload the SmartBridge code.

In case it is helpful to anyone - I took the original ReadMe for Ant+ and
Steps 1-7 - skipped. I assumed that the prior downloads would all work and the Ant+ tweak to "manifest" would still hold
Step 8 - downloaded the latest zip from GitHub. I replaced with the latest 'xiao_ble_sense_s332' - I thought about checking each line item to see if it had been updated but went for just fully replacing each prior file with the latest version from Github extract
Step 9 - I deleted/removed the prior 'SmartBridge Zephyr' application to then re-do this step but pointing to the latest folder from the latest extract from Github.
Steps 10-13 - repeated as described in Readme.

I now need to test out the new version. Depending on the number of replies after this post - I made just edit this one with the results of Ant+ LEV profile testing or I will create a new post.

Thanks again for all the hard work that has gone in to this.

 

[HexagonSun]

I'm away for a couple of days so will update github when I get back to a laptop and make sure there's a "how to update" section for noobs. In summary you're on the right track - there's no need to re-download NCS or ANT+ libraries. The xiao_ble_sense_s332 folder is also unchanged so you just need to replace the files in SmartBridge Zephyr with the new ones then rebuild in NCS.

 

[Surfing_Spider]

Can I suggest adding a table to the Github Wiki with the available sensors that you can add to the data screens. I think I have got them all but please correct the information if I am wrong / missing any fields

Function	Garmin Category	Garmin Sensor Name	Sensor Type
Rider pedalling power (watts)	Power	Power	ANT+ Power Meter
Pedal RPM	Power	Cadence	ANT+ Power Meter
Rider vs motor contribution (SmartBridge repurposed)	Power	Balance	ANT+ Power Meter
Wheel-rotation-based speed	Speed	Speed	ANT+ LEV
Wheel-rotation-based distance (odometer)	Distance	Distance	ANT+ LEV
Bosch battery charge (%)	E-Bike	E-Bike Battery	ANT+ LEV
Estimated remaining distance	E-Bike	Travel Range	ANT+ LEV
Current assist mode (Eco / Tour / EMTB / Turbo)	E-Bike	Assist Mode	ANT+ LEV

 

[Surfing_Spider]

Also this is a log of my Bosch gen5 cx with a 800wh battery. I thought it might be useful as it was very low charge at the time.

 

[notshy]

Android app - I've just tried switching SmartBridge to Transport Mode and it's not switching for me. Can someone else confirm their switch in and out of Transport Mode is working? This might just be my version, so wanting to confirm

 

[HexagonSun]

Android app - I've just tried switching SmartBridge to Transport Mode and it's not switching for me. Can someone else confirm their switch in and out of Transport Mode is working? This might just be my version, so wanting to confirm

Sorry - it's not just you! Looks like I introduced a bug in the latest version. It's a simple fix that I'll patch and re-release when I get back, but if you want to do it directly go to the SmartBridge Zephyr/src folder and open main.c in VSCode - go to line 241:

if (len < 8) return len;

Change the 8 to a 6, rebuild the project and drop the uf2 file onto your board - should sort it.