ANT+ bpwr tx with Garmin edge 520plus

[Pepam]

Hi,

I have two questions:

1)  I am using ant bpwr tx example, SDK 15.2., Softdevice S212 v5.0.0, Segger embedded studio, nRF52832 DK and Garmin edge 520plus to display data. Now I am able to see Standard power - only main data page (0x10) data in watts and instaneous cadence on my Garmin device, example also prints data via UART. Problem is, that I want to broadcast Standard Crank Torque Main Data Page (0x12) and when I change sensor type to crank torque sensor in config.h, my Garmin device can see the power sensor, but does not read any data from it, but I can see data printed on UART. So what should be the problem?

2)  My goal is to insert my custom data from my app, that reads peripheral and computes torque and cranks tics, revolutions and other values required to be full compliant with bpwr tx profile. So my question is, if it is the best way to insert data in the same way as the bpwr simulator does, or if is there some better solution to do that ?

thank you

[Kenneth]

Hi,

If you haven't already you should get one or two ANTUSB-m dongle so you may run the ANT+ Simulator and tools:
https://www.thisisant.com/developer/components/antusb-m/ 
https://www.thisisant.com/developer/resources/downloads/#software_tab

The ANTware II (in above link) is also a useful software tool, since you can set the ANT dongle in scan mode to receive all ANT(+) packets, and thereby compare the actual data transmissions with the profile you are implementing:
https://www.thisisant.com/developer/resources/downloads/#documents_tab 

Having two dongles you may also setup one to simulate as a sensor and one to simulate as a display, you can then compare with your own data.

Best regards,
Kenneth

[Pepam]

Hi,

I had bought other pca10040 and now I am running bpwr TX on the first board, and bpwr RX on the second. I am able to read data comming from TX to RX via UART. So now I know that bpwr TX is working properly with crank torque sensor type, but I have still the same question, why Garmin 520plus does not show any data. So any suggestion what to do? Please see attached print screen.

regards

[Kenneth]

Have you set the ANT+ network key?

See ant_key_manager_config.h:

#ifndef ANT_PLUS_NETWORK_KEY
    #define ANT_PLUS_NETWORK_KEY    {0, 0, 0, 0, 0, 0, 0, 0}            /**< The ANT+ network key. */
#endif //ANT_PLUS_NETWORK_KEY

#ifndef ANT_FS_NETWORK_KEY
    #define ANT_FS_NETWORK_KEY      {0, 0, 0, 0, 0, 0, 0, 0}           /**< The ANT-FS network key. */
#endif // ANT_FS_NETWORK_KEY

The ANT+ Network Key is available for ANT+ Adopters. Go to http://thisisant.com to become an ANT+ Adopter and access the key.

[Pepam]

Yes, I had configured networks key to value I got from thisisant as an ant adopter ( there is written that code {0, 0, 0, 0, 0, 0, 0, 0} is already an invalid value, so i have put there the valid network key that is written there. Anyway when I set the code to {0, 0, 0, 0, 0, 0, 0, 0}, Garmin device can not see any bpwr sensor, but when I set it to the network key provided on thisisant, Garmin device can see all types of bpwr sensors ( power only, torque on wheel, torque on crank) but can just show incomming data from power only sensor. From torque on crank/wheel it can not show any incomming data.

[Kenneth]

Did you follow up also on my comment:

"If you haven't already you should get one or two ANTUSB-m dongle so you may run the ANT+ Simulator and tools:
https://www.thisisant.com/developer/components/antusb-m/ 
https://www.thisisant.com/developer/resources/downloads/#software_tab"

This will emulate ANT+ sensor and display. You may also direct your question to thisisant forum on this specific topic on ANT+ : https://www.thisisant.com/forum 

Best regards,
Kenneth