Advertisement with LE Coded PHY

Hi Ben,

Yes, our S140 Softdevice supports CODED PHY. You can easily test this if you have access to two 52840 DK. The ATT_MTU Throughput Example includes this mode. I have also posted a modified version of the ble_app_uart/ble_app_uart_c here: https://devzone.nordicsemi.com/f/nordic-q-a/40476/unable-to-convert-to-long-range-after-looking-at-umpteen-examples--/157300#157300 that sets the max output power as well as using code phy. 

Best regards,

Vidar

Hi Vidar,

Thank you very much for the prompt reply. 

However, I tried to use the CODED PHY for advertisement in ATT_MTU_Throuput example but I am not successful. 

I changed the following line of codes:

adv_params.primary_phy = BLE_GAP_PHY_1MBPS;
adv_params.secondary_phy = BLE_GAP_PHY_1MBPS;

adv_params.properties.type = BLE_GAP_ADV_TYPE_CONNECTABLE_SCANNABLE_UNDIRECTED;

When I run it on the board, it does not throw an error but just simply stops!

Do you know the reason?

Br,

Ben

Hi Vidar,

Thank you very much for the prompt reply. 

However, I tried to use the CODED PHY for advertisement in ATT_MTU_Throuput example but I am not successful. 

I changed the following line of codes:

adv_params.primary_phy = BLE_GAP_PHY_1MBPS;
adv_params.secondary_phy = BLE_GAP_PHY_1MBPS;

adv_params.properties.type = BLE_GAP_ADV_TYPE_CONNECTABLE_SCANNABLE_UNDIRECTED;

When I run it on the board, it does not throw an error but just simply stops!

Do you know the reason?

Br,

Ben

Hi,

What did you change the type to? Should be BLE_GAP_ADV_TYPE_EXTENDED_CONNECTABLE_NONSCANNABLE_UNDIRECTED. 

Hi Vidar,

Yes I have changed the type to BLE_GAP_ADV_TYPE_EXTENDED_CONNECTABLE_NONSCANNABLE_UNDIRECTED. 

"

adv_params.primary_phy = BLE_GAP_PHY_CODED;
adv_params.secondary_phy = BLE_GAP_PHY_CODED;

adv_params.properties.type = BLE_GAP_ADV_TYPE_EXTENDED_CONNECTABLE_NONSCANNABLE_UNDIRECTED;

"

But I get this :

"

[00:00:00.000,091] <info> app: Preparing the test.
[00:00:00.000,122] <info> app: Starting advertising.
[00:00:00.000,244] <info> app: Starting scanning.
[00:00:00.050,292] <info> app: Device "Nordic_ATT_MTU" found, sending a connection request.

"

It found the device but then it stops!!

Br,

Ben

Hi,

I also add this to the scan parameter:

"

static ble_gap_scan_params_t m_scan_param =
{
.active = 0x00,
.extended = 0x01,
.interval = NRF_BLE_SCAN_SCAN_INTERVAL,
.window = NRF_BLE_SCAN_SCAN_WINDOW,
.timeout = 0x0000, // No timeout.
.scan_phys = BLE_GAP_PHY_CODED, // BLE_GAP_PHY_CODED BLE_GAP_PHY_1MBPS
.filter_policy = BLE_GAP_SCAN_FP_ACCEPT_ALL,
};

"

And then I added this line of code:

"  err_code = sd_ble_gap_scan_start(&m_scan_param, &m_scan_buffer);" 

to scan_start() function.

But still, the code doesn't work and it stops after finding the Nordic device!!!

Br,

Ben

Hi Ben,

It looks like the example will require a few modifications to advertise and scan with CODED PHY. Did you try the other example I linked to?

Hi Vidar,

I have not done the other. Since I am interested in The Throughput example. We are doing a heatmap of RSSI in the indoor environment for studying BLE 5 in the university. 

I would appreciate if you help me with this example! If you could share the code that works with COED PHY, really would save my time for now. 

Br,

Ben