Hi,
We use Wilink8 module (WL1837) for WiFi and BT connectivity on a device that uses i.MX6 Solo processor from Freescale. We use Bluetopia as the BT stack. The BT firmware used is TIInit_11.8.32.bts. The OS is Ubuntu 12.04.2 LTS and Linux kernel version is 3.10.17.
We observe an issue with BT-WiFi coexistence. The use cases are listed below:
- Simultaneous data transfer via WiFi and BT
- Connect and disconnect BT while data transfer via WiFi is in progress
- Connect and disconnect WiFi when BT is connected
- Up and down WiFi interface when BT is connected
In all these cases, WiFi is in client mode, and SPP is used for data transfer over BT.
After executing these steps, BT and WiFi work fine; however, after rebooting the device, BT stops working. This is indicated by "hciconfig" not showing any BT interfaces. After a couple of days, WiFi also stops working. This is indicated by wlan0 interface not listed upon executing "ifconfig -a".
BT and WiFi never work again in the device, even after reflashing it.
Has anyone observed this issue?
Thanks,
Sharafuddeen Nalakath