no RF input/output on nRF51-DK with s210 Examples

RE: no RF input/output on nRF51-DK with s210 Examples

mtpurdy — Mon, 22 Aug 2016 21:40:51 GMT

Thanks Petter!

I'm trying to find where you found that the message period needed to be changed in SimulANT (to 0x2000u). I can't see that value (or the equivalent decimal value) anywhere in SimulANT. I'm new to ANT as well, and I'd love to have a better understanding of this.

Also, where did you see that the simulANT parameters needed to be changed to:

Device Number 49
Device Type 120
Transmission Type 1

Thanks very much for your help!

RE: no RF input/output on nRF51-DK with s210 Examples

Petter Myhre — Wed, 11 Feb 2015 15:10:33 GMT

Np. The network key is found here. The message period was found in Simulant.

RE: no RF input/output on nRF51-DK with s210 Examples

Andreas — Wed, 11 Feb 2015 15:08:15 GMT

Ok, great Peter! Thanks a lot, also RX example works on nRF51-DK now... But as I am new to ANT development, I am curious how to find these values (Network Key and message period). Background: I am developing a display unit that shall retrieve data from multiple sensors later on. Means, that my MCU will have to figure out settings in firmware on its own, just based on a device id.

RE: no RF input/output on nRF51-DK with s210 Examples

Petter Myhre — Wed, 11 Feb 2015 13:44:19 GMT

I haven't worked with either Garmin Edge or SimulANT before, but I just tested SimulANT.

I tested with hrm_tx in the ant_hrm folder.

To get it working you need to change two things in the hrm_tx project:

the message period from #define HRMTX_MSG_PERIOD 0x1F86u to #define HRMTX_MSG_PERIOD 0x2000u

and

the network key from #define HRMTX_NETWORK_KEY {0,0,0,0,0,0,0,0} to #define HRMTX_NETWORK_KEY {0xB9,0xA5,0x21,0xFB,0xBD,0x72,0xC3,0x45}

In simulANT; add a Heart Rate Display and set the following parameters:

Channel Period FourHz
Device Number 49
Device Type 120
Transmission Type 1

Now it should work. A tip, next time you feel like it is nothing happening on the air use ANTwareII to test. I feel it is easier to use and more flexible.