pc-ble-driver-py multi peripheral problem

RE: pc-ble-driver-py multi peripheral problem

Youngjun — Fri, 06 Dec 2019 00:22:31 GMT

Thanks Kenneth.

RE: pc-ble-driver-py multi peripheral problem

Kenneth — Thu, 05 Dec 2019 13:38:13 GMT

Try to add before ble_enable():

gap_cfg = BLEConfigConnGap()
gap_cfg.conn_count = 2
self.adapter.driver.ble_cfg_set(BLEConfig.conn_gap, gap_cfg)

RE: pc-ble-driver-py multi peripheral problem

Youngjun — Thu, 05 Dec 2019 10:34:21 GMT

Ok. I understand.

I Checked heart_rate_collector.py example.

In open() method, I can change central_conn_count when i use nRF51.

But, my central device is nRF52 and nrf_sd_ble_api_ver is 5.

Is it possible to change central connection count using nRF52(nrf_sd_ble_api_ver 5)?

    def open(self):
        self.adapter.driver.open()
        if config.__conn_ic_id__ == "NRF51":
            self.adapter.driver.ble_enable(
                BLEEnableParams(
                    vs_uuid_count=1,
                    service_changed=0,
                    periph_conn_count=0,
                    central_conn_count=1,
                    central_sec_count=0,
                )
            )
        elif config.__conn_ic_id__ == "NRF52":
            gatt_cfg = BLEConfigConnGatt()
            gatt_cfg.att_mtu = self.adapter.default_mtu
            gatt_cfg.tag = CFG_TAG
            self.adapter.driver.ble_cfg_set(BLEConfig.conn_gatt, gatt_cfg)

            self.adapter.driver.ble_enable()

RE: pc-ble-driver-py multi peripheral problem

Kenneth — Thu, 05 Dec 2019 08:12:18 GMT

No need to change firmware or driver. You should only need to increment 'central_conn_count' in your source code.

RE: pc-ble-driver-py multi peripheral problem

Youngjun — Thu, 05 Dec 2019 04:06:03 GMT

Ok.

I'm using pc-ble-driver-py(0.12.0) and connectivity_4.1.1 s132_5.1.0.hex file.

When i test multi peripheral using heart_rate_collector.py example, i got error code 18.

So, i thought i had to modify the central firmware code.

Is it possible to connect multi peripheral just modifying heart_rate_collector.py?

RE: pc-ble-driver-py multi peripheral problem

Kenneth — Wed, 04 Dec 2019 13:16:27 GMT

The connectivity.hex files are already delivered pre-compiled for each release. It is possible to build the connectivity.hex files, however it is not straight forward, and I am not sure why you would want to do so. If you still want to build them, you can find a description here on how to compile pc-ble-driver from source:
https://github.com/NordicSemiconductor/pc-ble-driver/#compiling-connectivity-hex-files

[Recommended:] If you don't want to build your own connectivity.hex files, but use the pre-compiled hex files, then you can find an overview of releases here:
https://github.com/NordicSemiconductor/pc-ble-driver-py/releases

To install the latest release see:
https://github.com/NordicSemiconductor/pc-ble-driver-py#installing-from-pypi
Example: pip install pc-ble-driver-py

After installation you can find pre-compiled connectivity.hex files in the following path (actual connectivity.hex files will depend on the release you have installed):
<your python install path>\Lib\site-packages\pc_ble_driver_py\hex

The latest release (as of 4th Dec 19) support nRF51 S130 v2 (nRF51822) and nRF52 S132 v5 (nRF52832 and nRF52840).

RE: pc-ble-driver-py multi peripheral problem

Youngjun — Wed, 04 Dec 2019 00:21:14 GMT

Hi, Kenneth

Thanks for replying.

Can i modify connectivity.hex file in pc-ble-driver-py?

Or, Can i use central example(in SDK folder) with pc-ble-driver?

RE: pc-ble-driver-py multi peripheral problem

Kenneth — Mon, 02 Dec 2019 12:48:10 GMT

Hi,

From:
https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.s132.api.v7.0.1/group___b_l_e___g_a_p___f_u_n_c_t_i_o_n_s.html#gacca0e56084c7b3ed832b1bfa3911b7fe

I can see that 18 = NRF_ERROR_CONN_COUNT .

I assume you need to change 'central_conn_count' to something more than 1?

Best regards,
Kenneth