enable LE Ping with pc-driver-ble-py

[Imen]

HIi

I am using the pc-driver-ble_py library to build a central in order to test a peripheral. At this point, I am interested in starting a LE ping and I saw that I should use the function sd_ble_opt_set.

I am trying to add the necessary code in the driver.py in order to be able to set the auth_payload_timeout however I always get the error : "in method 'sd_ble_opt_set', argument 3 of type 'ble_opt_t const *'", argument 3 is p_opt.

I created the class BLEGapPayload to use it as a p_opt input, but still the same error

class BLEGapPayload(object):
def __init__(
self,
conn_handle,
auth_payload_timeout
):
self.conn_handle = conn_handle
self.auth_payload_timeout = auth_payload_timeout

@classmethod
def from_c(cls, opt_auth_payload_timeout):
return cls(
conn_handle = opt_auth_payload_timeout.conn_handle,
auth_payload_timeout = opt_auth_payload_timeout.auth_payload_timeout
)

def to_c(self):
opt_auth_payload_timeout = driver.ble_gap_opt_auth_payload_timeout_t()
opt_auth_payload_timeout.conn_handle = self.conn_handle
opt_auth_payload_timeout.auth_payload_timeout = self.auth_payload_timeout
return opt_auth_payload_timeout

putting a constant value in p_opt doesn't work obviously

Can you guide me through this? I know the library doesn't support this functionality yet, Am i in the right direction? thanks in advance

[Mttrinh]

Hi,

Like you said, you are trying to add a function to pc-ble-driver-py that isn't already supported. I suggest you use the ble_cfg_set as a template and go from there, it has a similiar structur.

https://github.com/NordicSemiconductor/pc-ble-driver-py/blob/master/pc_ble_driver_py/ble_driver.py#L1677

[Imen]

Hi thank you for your advice, I managed to do this. I would like to ask you now about the ble_opt_get, in fact, I want to perform an opt get on the channel map but it always return a conn_handle error (error 0x3002) and I don't understand why ( I am connected to only one device and the conn_handle value is 0) do you have any idea what to do? the opt_get works fine on a devkit peripheral but not on my tool using the pc-driver-ble-py library.

[Edvin]

How do you pass the conn_handle into the opt_get()?

Are you sure you don't call this right after a disconnect? You should use the variable holding the conn_handle, to ensure that it is updated at all times.

Best regards,

Edvin

[Imen]

Yes I am using the variable holding the conn_handle value and i can see it in debug mode, the value is correct and of course I don't call the opt_get after a disconnection

[Edvin]

do you happen to get the disconnect event right after this call?