3 ms·

Thanks for sharing the link! I remember watching that presentation ... I really liked how thorough it was. I'll include the links in the article as an additiona

Thanks for sharing the link! I remember watching that presentation ... I really liked how thorough it was. I'll include the links in the article as an additional reference! > Upping the MTU is "easy" on Android (you can do it, but I've had mixed results) hehe, yeah, I've definitely run into some interesting issues when changing the MTU on android. There's a class of older devices that seem to only support the default MTU size but will happily negotiate a 512 byte MTU and then drop the data for you :)

oflannabhra 7y ago
Your article is great, too! I've saved it along with other Bluetooth resources for reference. Way more accessible than a video, thanks for posting it. There was nothing like it when I was deep in needing to maximize throughput. The thing I really appreciated in the presentation was the visualization of how each of the options increased throughput. I also was very thankful that CoreBluetooth handles so much for us. I was able to get our firmware updates to get to 85% theoretical speeds without having to do much fiddling (besides good algorithm design). I am jealous of your lab gear, though. I got Ubertooth [0] running for sniffing, but could only successfully follow a connection event about 25-33% of the time. [0] - https://github.com/greatscottgadgets/ubertooth https://github.com/greatscottgadgets/ubertooth
- chrisc11 7y ago
  > I also was very thankful that CoreBluetooth handles so much for us. I was able to get our firmware updates to get to 85% theoretical speeds That's awesome! I've generally been pretty happy with the CoreBluetooth framework as well and it's nice that all devices in the iOS ecosystem behave fairly consistently. I have found Bluetooth State Restoration to have some odd quirks from release to release but I think it has gotten better over the years as well. > I got Ubertooth [0] running for sniffing, but could only successfully follow a connection event about 25-33% of the time. heh, yeah, the Ubertooth is neat for the price point ... I've used it as cheap spectrum analyzer [0] several times in the past when prepping for BLE RF testing. Could pretty quickly verify that a bluetooth chip was at least entering Direct Test Mode and transmitting on a particular channel using it! [0] http://ubertooth.sourceforge.net/usage/start/ http://ubertooth.sourceforge.net/usage/start/

oflannabhra 7y ago

Your article is great, too! I've saved it along with other Bluetooth resources for reference. Way more accessible than a video, thanks for posting it. There was nothing like it when I was deep in needing to maximize throughput. The thing I really appreciated in the presentation was the visualization of how each of the options increased throughput. I also was very thankful that CoreBluetooth handles so much for us. I was able to get our firmware updates to get to 85% theoretical speeds without having to do much fiddling (besides good algorithm design). I am jealous of your lab gear, though. I got Ubertooth [0] running for sniffing, but could only successfully follow a connection event about 25-33% of the time. [0] - https://github.com/greatscottgadgets/ubertooth https://github.com/greatscottgadgets/ubertooth

chrisc11 7y ago
> I also was very thankful that CoreBluetooth handles so much for us. I was able to get our firmware updates to get to 85% theoretical speeds That's awesome! I've generally been pretty happy with the CoreBluetooth framework as well and it's nice that all devices in the iOS ecosystem behave fairly consistently. I have found Bluetooth State Restoration to have some odd quirks from release to release but I think it has gotten better over the years as well. > I got Ubertooth [0] running for sniffing, but could only successfully follow a connection event about 25-33% of the time. heh, yeah, the Ubertooth is neat for the price point ... I've used it as cheap spectrum analyzer [0] several times in the past when prepping for BLE RF testing. Could pretty quickly verify that a bluetooth chip was at least entering Direct Test Mode and transmitting on a particular channel using it! [0] http://ubertooth.sourceforge.net/usage/start/ http://ubertooth.sourceforge.net/usage/start/