How can I notify a handle defined by myself in pc-ble-driver-py?

RE: How can I notify a handle defined by myself in pc-ble-driver-py?

Sigurd — Mon, 28 Nov 2022 08:51:12 GMT

If you have a look at e.g. the heart_rate_collector example, you get the data in 'data' in on_notification(self, ble_adapter, conn_handle, uuid, data)

https://github.com/NordicSemiconductor/pc-ble-driver-py/blob/master/pc_ble_driver_py/examples/heart_rate_collector.py#L162

RE: How can I notify a handle defined by myself in pc-ble-driver-py?

zhaoyuan — Mon, 28 Nov 2022 08:30:55 GMT

Hi Sigurd,

Thank you for your helpful advice. I have another problem that I wonder to know where I can get the data notified from nrf5340. I can't find the data in any variable provided by enable_notification such as result. Currently it seems to get data and print it as log.

RE: How can I notify a handle defined by myself in pc-ble-driver-py?

Sigurd — Fri, 25 Nov 2022 09:31:23 GMT

Hi,

You have the function conn_param_update() you can use. Changing to 2MPY should help as well,

phy_update(). And also data_length_update() and att_mtu_exchange()

RE: How can I notify a handle defined by myself in pc-ble-driver-py?

zhaoyuan — Fri, 25 Nov 2022 02:47:51 GMT

Thank you for your reply. I find that connection interval is defined in ble_driver.py. Can the parameter such as connection interval be directly modified in ble_driver.py or any other api?

RE: How can I notify a handle defined by myself in pc-ble-driver-py?

Sigurd — Thu, 24 Nov 2022 12:23:09 GMT

[quote user="zhaoyuan"] I can get the data from enable_notification now.[/quote]

Great!

[quote user="zhaoyuan"]However, the speed is much lower than the speed by the desktop tool, which is 10kbps contrast to 100kbps. [/quote]

Could be a difference in connection interval, and if ATT MTU, DLE, etc is used or not.

RE: How can I notify a handle defined by myself in pc-ble-driver-py?

zhaoyuan — Thu, 24 Nov 2022 05:50:13 GMT

I find that I get a wrong uuid and handle. What I need is the uuid and handle of UART Tx but I took CCCD's uuid and handle. I can get the data from enable_notification now. However, the speed is much lower than the speed by the desktop tool, which is 10kbps contrast to 100kbps.

And the function "self.adapter.enable_notification" seems to get data and print it as log, but I want to store the data in a variable and process it in the future. I wonder if there is any other appropriate function or api in pc-ble-driver-py. Thank you.

RE: How can I notify a handle defined by myself in pc-ble-driver-py?

zhaoyuan — Thu, 24 Nov 2022 04:38:10 GMT

Hi，

Thanks for your relpy.

1) The pc-ble-driver-py I use is verision 0.17.0.

2) Yes, I get handle in this way.

RE: How can I notify a handle defined by myself in pc-ble-driver-py?

Sigurd — Wed, 23 Nov 2022 14:14:37 GMT

Hi,

1) What version of pc-ble-driver-py are you using?

2) You hovered the mouse over the CCCD, and got the handle like this?