Hello,
Using a Cypress CYW20819 controller on a custom board, we are trying to customize BLE pairing method.
Cypress firmware is compiled using ModusToolBox 2.0/2.1 workflow and `wiced_btsdk` 2.4.
During pairing, we want the cypress controller to print a passkey (randomly generated), then, the peering device (a Linux 4.19.80 with bluez 5.50) will have to type this passkey to validate pairing.
By setting cypress controller pairing IO capabilities to `BTM_IO_CAPABILITIES_DISPLAY_ONLY`, this works fine, a random 6 digits number is correctly printed, and peering device can correctly pair.
At this stage, the peering device has 30 seconds to type the passkey, otherwise, pairing will fail returning `SMP_RSP_TIMEOUT` error.
However, we now want to set the pairing passkey to 4 digits :
* Is it possible using cypress SDK ?
* I read that BLE passkey has to be a 6 digits number, so an acceptable workaround would be to use a 6 digits passkey between '000000' and '009999' (a '00' prefix can be set on peering device). Can we set pairing passkey manually at runtime using cypress SDK ?
We also to be able to set the pairing passkey timeout to 60 seconds. Is it possible using cypress SDK ?
Best Regards,
Jean Martin.
