Thread: eCoach
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mvonweis is offline mvonweis
2010-09-23 , 10:14
Posts: 10 | Thanked: 5 times | Joined on Jul 2010
#264
Originally Posted by crope View Post
I think your belt uses 0xf1 since I have set it originally as 0xd1. Anyhow, difference between 0xf1 and 0xd1 is only one bit (still no knowledge what it could be, chip revision or some other indicator). Also I have seen 0, 1, 2 and 3 in my dumps. IIRC one of those are pairs (1 and 2?) and it could be for example signal strength. It should be rather easy to verify by testing and also discover what are the rest of keys (battery, signal strength, signal quality, pulse quality, temp, etc.).
Yes, you're right, I got 0xf1 and 0xd1 mixed up. Anyway, both identifiers have been seen in the wild and I wonder whether the difference is significant or not.

From the other stats, battery level would be the most useful. The rest of the stats are basically "nice to have".

Originally Posted by crope View Post
Unfortunately I broke my Nokia 6220c and I have no device to compare against Sports Tracker.
Well, we have one E72 with SportsTracker in the household but I can't do any extensive testing with it. I'll see if I can do some protocol snooping.

Originally Posted by crope View Post
And also I think there is some problems to get connection and keep connection alive. When connection losses for some reason eCoach never tries to auto-connect I think. As a Sampo I think also there could be bidirectional communication protocol. Is that possible to set computer as Bluetooth repeater and snoop data?
FWIW, I haven't had any connectivity problems, even when carrying the N900 in a belt on my back.

Auto-reconnect could be a good idea, but only if a HRM belt was detected at the beginning of the exercise. Sometimes I use eCoach without the HRM belt e.g. when I bike to work, and I don't think it makes sense for eCoach to actively try to reconnect in that case.

--Martin