Establishing Connection - BLE P2P Server/Client B-WB1M-WPAN1

[Connor48]

Hi, 

I am setting up a p2p Client and p2p Server example using 2x B-WB1M-WPAN1 boards. There is no example I can find for the B-WB1M-WPAN1 so I have taken the Nucleo example and modified to suit the B-WB1M-WPAN1. 

I cannot connect the p2p Server to the p2p Client. Here is where I am at:

- P2P Server is operational and available on the ST BLE Toolbox phone app. 

- P2P Server advertising settings as below

- P2P Client is running and a button press will initiate a scan as below. 

Questions:

1. Does the p2p_Client application apply a device filter to the scan procedure, and if so what is being filtered and where can I modify this filter to find my device? Could this be my issue?

2. In future I would like to only connect to devices with a specific ID, where could I set this ID and is there an automatic re-connect capability if the ID is fixed?

Thank you for any help.

[Connor48]

Hey,

Is there any more information I could provide to help with assistance?

Or are there any other useful documents other than AN5289?

@STTwo-32 any suggestions?

Cheers, Connor. 

[Connor48 · Accepted solution]

For anyone with this same issue the solution for me was very simple. 

In app_ble.c of the p2p_client the advertising data is filtered for manufacturer specific data. I added the the print messages below to see what k+2 and k+3 was.

To proceed to connect k+2 must be 0x01 and k+3 0x83.

I also had to reduce the adlength filter to 4 instead of 7. 

Additional print functions:

/* USER CODE BEGIN AD_TYPE_MANUFACTURER_SPECIFIC_DATA */

APP_DBG_MSG("Manufacturer Specific Data\n");
APP_DBG_MSG("k+2: %X \n",adv_report_data[k + 2]);
APP_DBG_MSG("k+3: %X \n",adv_report_data[k + 3]);
APP_DBG_MSG("Ad Length %d \n",adlength);

/* USER CODE END AD_TYPE_MANUFACTURER_SPECIFIC_DATA */
if (adlength >= 4 && adv_report_data[k + 2] == 0x01) //>=7 in example
{ /* ST VERSION ID 01 */
APP_DBG_MSG("--- ST MANUFACTURER ID --- \n\r");
switch (adv_report_data[k + 3])
{ /* Demo ID */
case CFG_DEV_ID_P2P_SERVER1: /* End Device 1 */
APP_DBG_MSG("-- SERVER DETECTED -- VIA MAN ID\n\r");

Print result:

Manufacturer Specific Data

k+2: 1

k+3: 83

Ad Length 4

— ST MANUFACTURER ID —

— SERVER DETECTED — VIA MAN ID

Event Type: 00, Data Size: 19

Advertising Data: 02 0A 00 03 09 50 44 03 03 0D 18 04 FF 01 83 00 02 01 06

To change the manufacturer specific data use either:

app_ble.c in p2p_server app and update the a_AdvData array:

4, AD_TYPE_MANUFACTURER_SPECIFIC_DATA, 0x01, 0x83, 0x00 /* */,

Or, use CubeMX to update this same line of code here in your p2p_Server.ioc:

I hope this helps out someone else!