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The feature should work.
You just need to call wiced_bt_coex_enable(); API (in BTM_ENABLED_EVT )
The pins are GPIO_5 and GPIO_6 as mentioned in the datasheet.
Could you please confirm if you are using any custom board for CYBT-35320707-02 module or using CYBT35320707 EVAL board?
If you are using a custom board, can you please confirm if nothing is connected to coex pins.
If EVAL board, I think the GCI pin GPIO_5 is connected to PUART_Rx . Can you please make sure PUART_RX switch is off and try again?
Also which application is running on your wifi chip and CYBT-35320707-02 chip? How you are testing.
I had tested 43907 with 20706 some time back. That time I tested with scan app in 43907 and ble project in 20706. There won't be always signal on the SECI_out of 20706 . I noticed there was some traffic when a scan is starting in 43907 while 20706 tries for a connection etc.
Could you please try out some BT activities during a continuous scan or when scan stops on wifi chip ?
I do have a custom board but I would just like to see this work with my 2 dev boards CYBT35320707-EVAL and CYW943907AEVAL1F (1GC)
I am running snip.scan on the CYW943907
I am using the default platform files with just one change.
I have flipped the low bit in board flags for the nvram config on the 1GC to enable the GCI and I see data on J6.39 which I have connected to GPIO6 of the CYBT35320707
I am running the beacon snip on the cybt35320707 board with the only code change of adding bt_coex_enable()
GPIO5 of the 20707 board is floating high (3.3) as it should but when I connected it to J6.38, there is contention and it is pinned at 1.7 volts. If I disconnect the line, j6.38 is being pulled low on the 1gc
Now it appears that the 1GC board isn't properly setting j6.38 RF_SW_CTRL_8_UART2_RXD as an input.
What would cause that?
As per the internal interactions seems like Coex pins are not brought out for CYBT_353027 module.
I would suggest you to use CYBT_343026 module (https://www.cypress.com/documentation/datasheets/cybt-343026-01-ez-bt-wiced-module ) which uses the same base die (CYW20706) if you are in early stages of product evaluation.
It has Coex pins - GPIO_ 6 & GPIO_7
Sorry for the inconvenience caused.
Thanks & Regards,