AIROC™ Wi-Fi and Wi-Fi Bluetooth Combos

Hi,

for obvious reasons we're trying to reduce the component count for one of our products and compensate as much as possible in software.

For this we would like to route HFP audio from SCO over HCI instead of the module's I2S interface. This technique works very well with certain TI modules but only because the modules send custom HCI packets to inform the host when to send the audio packets. 

The only thing we could find out so far is that there are vendor specific HCI commands for the CYW43455 that do configure audio routing. What they are and whether they include configuration options for a solution as described above has been beyond our reach.

Does anyone have experience with this sort of setup or access to a proper command reference for custom HCI commands?

Thanks in advance!

Hello,

we are working with 1XA module from Murata on x86 platform. Using Linux kernel 5.4.18 with brcmfmac, it is possible to use the chip as AP or STA on a and b bands. 

On our design, we support both main and auxiliary antennas. According to the product datasheet (https://www.cypress.com/file/503391/download) this can support both MIMO and RSDB operation modes. However, it is only possible to communicate through the main antenna. Whenever the auxiliary antenna is selected, either through iw set antenna command or wl txchain, each try returns an error message (both SISO and MIMO operations).

We are using the test firmware (version 13.35.225) for BCM4355/13, nvramrev 724401 from Murata vendor and brcmfmac from package version 2020_0925. 

Is there a way for activating both antennas in order to switch or use both at the same time?

Regards,

Andrea

Hi,

We are testing WHD with Sterling-LWB5+ (CY4373E) and we have the following issue. In whd_wifi_on() country code setting fails and we get "Could not set Country code" error.

Tracing shows that whd_thread_func() puts the device to sleep (KSO disable) and takes the transceiver semaphore with timeout CY_RTOS_NEVER_TIMEOUT. After this point,  the card interrupts are missed and there is no activity on the wifi task.

To test that the issue is with card interrupts when KSO is off, we have tested the following case. We used whd_ensure_wlan_bus_is_up() in the main task loop and set CY_RTOS_NEVER_TIMEOUT to, for example, 10ms so that we are periodically waking up the device. Then, the card interrupts are received and the country code setting succeeds. Also, whd_wifi_on() completes successfully. We have tested with WHD v2.0.0 and v1.94.0.

What could be the root cause for this issue and how could we mitigate it?

Thanks,

Nima