ANT Forum

Hello.
I have a question.
1. In profile, Combined speed and cadence is only send data in page 0?
Couldn't get any data ? like battery, Serial etc..
2. If I use one MCU(nrf52832) and want to send individual speed(master) and cadence(master) data, the way is just open two channel and send data? is there any other collision or Frequency problem?
3.If I use one MCU and send seperate cadence and speed data (different channel), the licence fee is double? or it like one ant+ device?
thank you.
     

Thank you for you reply

As I question, I try one mcu and 2 profile broadcasting Cadence and Speed.
but still happend collision two channel.
I open channel speed and start broadcasting, after that I open another channel start broadcasting.
first collision happend almost as soon as open two channel. after that periodly( 2 ~3min or more later) happed two channel collision.
Does I need another func? (ex. time slot API?)
I try seperate mcu(2 of 52832) and individually open , the collision not happend.
I use s332 and 52832.
Couly you give me any advise?


     

Thank you for your kind

So you means,
In one MCU, it can be broadcasting several profile several master, but it can not avoid slightly Channel collision.
and this collision is enough expect.
Does any can remove this collision or reduce? because of the period is slightly different, Nothing to do??
     

I tried test a case.
using 52832, 15.3.0 SDK and S332 Softdevice.
It opened each channel Speed and cadence separately on one MCU.
Data was controlled Speed is 30 km/h and RPM is 60.
Then Connect garmin Edge 820 device.
Connect was successful and data also display what i expect.
problem is here. when collision was happened, temperately display value is down
For instance, 30 30 30 30 (collision happened) 28 25 24 20 (END) 25 28 30 30 30...
The value and count is not exactly. refer to the flow. Cadence value was also that.
Collision is happened periodly almost 2 min.
When took data from usb dongle, collision data is exactly 16 time per collision.
ex) 1 = collision, 0 = normal
Speed 0 1 0 0 1 1 0 0 1 0 1 1 1 0 1 0
Cadence 1 0 1 1 0 0 1 1 0 1 0 0 0 1 0 1
one channel is collision and another channel can send data.
and the count of collision is exactly half and half.

test result is normal? Is it enough expect case when collision is happened?
In my opinion, if it use cycling situation, it can't be use. Value is not correct value when collision is happened.
If assume 16 packets per 2 min, 4 seconds can't reliable per 2 min garmin edge and user perspective .
On garmin edge, is there any procedure or some rules if rx failed?

Thany you .      

You means that most displays update lower rate (1 or 2 Hz?), Don't need update 4Hz only?
Garmin edge devices update 1Hz? In profile, can update up to 4Hz, so I thought should update 4Hz.

I didn't use coasting Detection. When you Simulated( one muc and 2 profiles), did not happend collision?
If collision does not happened, what channel period did set(1Hz or 2Hz)?
I encode every time and revolution count together when Tx event happened. so I think while collision, not encode.
when collision was happened, I didn't do anything.
If collision is happened, one of two channel receive normal data and another can't receive data, and data of the display that received data is constant data.

     

Thank you.
some mistakes, edge display did not work normally.
I sent wrong time data.
after saw SimulAnt+ Sensor data same options, I changed.
After then, I don't need to handle when Collision event occurred.
now it was work perfectly.
I appreciated your kind reply.