On Fri, Nov 9, 2018 at 4:32 PM Martin Townsend <mtownsend1973@xxxxxxxxx> wrote: > > Hi, > > I see someone has already asked this question not long ago but I am > seeing the same problem. I have an embedded platform running 4.9 > kernel and Bluez 5.50 and the bluetooth device is the BroadCom > BCM4343W which supports bluetooth 4.1. > > I can run the btgatt-server and example-gatt-server fine and connect > to it from my phone using nRF and read the relevant attributes. This > I believe is where my device is in the peripheral role. If I close > the GATT server down I can use gatttool to query the characteristics > of another GATT server setup on my PC, I think this is then acting as > central role. > > But if I can't do both at the same time, once the GATT server is > running and I try and query the other GATT server, I get > root@mach-cw-rnet-ppm-1717:~# gatttool -b 5D:3C:72:B5:23:BE -t random > --characteristics > connect error: Connection refused (111) > > I've noticed that if I start bluetoothctl whilst the GATT server is > running it looks as if it has connected to my phone > > root@mach-cw-rnet-ppm-1717:~# bluetoothctl > Agent registered > [LG K8 (2017)]# > > Maybe this is expected but it does look like it has made a connection > back to the phone and I'm wondering if this is stopping it from acting > in the central role? > > Not really knowing much about the bluetooth stack I was wondering if > anyone has any pointers on how to debug this or let me know if I'm > doing something wrong? I'm quite comfortable putting debug code into > the kernel and/or bluez5 and recompiling to get more information if > required. > > Any help would be greatly appreciated, > Martin. I turned on DEBUG for a few of the hci_.c files and here's the output of the failed connect in case it helps These occur on connect from gatttool: Nov 09 08:03:00 mach-cw-rnet-ppm-1717 kernel: 00:00:00:00:00:00 -> 7b:bd:e7:6a:8a:8d Nov 09 08:03:00 mach-cw-rnet-ppm-1717 kernel: hci0 orig refcnt 9 Nov 09 08:03:00 mach-cw-rnet-ppm-1717 kernel: requesting refresh of dst_addr Nov 09 08:03:00 mach-cw-rnet-ppm-1717 kernel: hci0 dst 7b:bd:e7:6a:8a:8d Nov 09 08:03:00 mach-cw-rnet-ppm-1717 kernel: hci0 orig refcnt 10 Nov 09 08:03:00 mach-cw-rnet-ppm-1717 kernel: addr 7b:bd:e7:6a:8a:8d (type 1) Nov 09 08:03:00 mach-cw-rnet-ppm-1717 kernel: addr 7b:bd:e7:6a:8a:8d (type 1) auto_connect 5 Nov 09 08:03:00 mach-cw-rnet-ppm-1717 kernel: hcon 97310400 orig refcnt 0 Nov 09 08:03:00 mach-cw-rnet-ppm-1717 kernel: hci0 hcon 97310400 Nov 09 08:03:00 mach-cw-rnet-ppm-1717 kernel: hci0 cmd_cnt 1 cmd queued 2 Nov 09 08:03:00 mach-cw-rnet-ppm-1717 kernel: hci0 type 1 len 10 Nov 09 08:03:00 mach-cw-rnet-ppm-1717 kernel: hci0 Nov 09 08:03:00 mach-cw-rnet-ppm-1717 kernel: hci0 Event packet Nov 09 08:03:00 mach-cw-rnet-ppm-1717 kernel: hci0 opcode 0x200b Nov 09 08:03:00 mach-cw-rnet-ppm-1717 kernel: opcode 0x200b status 0x00 Nov 09 08:03:00 mach-cw-rnet-ppm-1717 kernel: hci0 opcode 0x200b Nov 09 08:03:00 mach-cw-rnet-ppm-1717 kernel: hci0 cmd_cnt 1 cmd queued 1 Nov 09 08:03:00 mach-cw-rnet-ppm-1717 kernel: hci0 type 1 len 5 Nov 09 08:03:00 mach-cw-rnet-ppm-1717 kernel: hci0 Nov 09 08:03:00 mach-cw-rnet-ppm-1717 kernel: hci0 Event packet Nov 09 08:03:00 mach-cw-rnet-ppm-1717 kernel: hci0 opcode 0x200c Nov 09 08:03:00 mach-cw-rnet-ppm-1717 kernel: opcode 0x200c status 0x00 Nov 09 08:03:00 mach-cw-rnet-ppm-1717 kernel: hci0 opcode 0x200c Nov 09 08:03:00 mach-cw-rnet-ppm-1717 kernel: hci0 Nov 09 08:03:00 mach-cw-rnet-ppm-1717 kernel: hci0 Event packet Then just before Error: connect error: Connection refused (111) many seconds later: Nov 09 08:03:41 mach-cw-rnet-ppm-1717 kernel: hcon 97310400 state BT_CONNECT Nov 09 08:03:41 mach-cw-rnet-ppm-1717 kernel: hci0 hcon 97310400 Nov 09 08:03:41 mach-cw-rnet-ppm-1717 kernel: hci0 orig refcnt 10 Nov 09 08:03:41 mach-cw-rnet-ppm-1717 kernel: hci0 hcon 97310400 Nov 09 08:03:41 mach-cw-rnet-ppm-1717 kernel: addr 7b:bd:e7:6a:8a:8d (type 1) Nov 09 08:03:41 mach-cw-rnet-ppm-1717 kernel: hcon 97310400 Nov 09 08:03:41 mach-cw-rnet-ppm-1717 kernel: hci0 hcon 97310400 chan 97421c80 Nov 09 08:03:41 mach-cw-rnet-ppm-1717 kernel: hci0 orig refcnt 11 Nov 09 08:03:41 mach-cw-rnet-ppm-1717 kernel: hci0 cmd_cnt 1 cmd queued 1 Nov 09 08:03:41 mach-cw-rnet-ppm-1717 kernel: hci0 type 1 len 5 Nov 09 08:03:41 mach-cw-rnet-ppm-1717 kernel: hci0 orig refcnt 10 Nov 09 08:03:41 mach-cw-rnet-ppm-1717 kernel: hci0 Nov 09 08:03:41 mach-cw-rnet-ppm-1717 kernel: hci0 Event packet Nov 09 08:03:41 mach-cw-rnet-ppm-1717 kernel: hci0 opcode 0x200c Nov 09 08:03:41 mach-cw-rnet-ppm-1717 kernel: opcode 0x200c status 0x00 Nov 09 08:03:41 mach-cw-rnet-ppm-1717 kernel: hci0 opcode 0x200c Regards, Martin.
