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toppot2009
toppot2009
Associate II
March 28, 2016
Question

Bluenrg-MS simultaneously Central/Peripheral

  • March 28, 2016
  • 2 replies
  • 816 views
Posted on March 28, 2016 at 21:15

Hi,

why after the aci_gap_set_discoverable and after the implementation of aci gap create_connection team advertising disappears and the connection is not established? But if carried out in the reverse order it works.

P.S. Bluenrg-MS (Stack mode 3).
This topic has been closed for replies.

2 replies

Scott Löhr
Scott Löhr
Senior III
April 18, 2017
Posted on April 18, 2017 at 23:43

Can you clarify, call by call (aci_gap..., etc.) what are your steps and what are your results and what are your expected results?

Before I see your response, I might guess that you need stack mode 4 to do what you want to do?

/**

 * Select the BlueNRG mode configurations.\n

 * @li Mode 1: slave or master, 1 connection, RAM1 only (small GATT DB)

 * @li Mode 2: slave or master, 1 connection, RAM1 and RAM2 (large GATT DB)

 * @li Mode 3: master/slave, 8 connections, RAM1 and RAM2.

 * @li Mode 4: master/slave, 4 connections, RAM1 and RAM2 simultaneous scanning and advertising.

 */

#define CONFIG_DATA_MODE_OFFSET             (0x2D)
mehdi
mehdi
Visitor II
April 27, 2017
Posted on April 27, 2017 at 11:46

Hi,

I try to start advertising while scanning operation is enabled.

The scanning works well, but the advertising never start.

I look at the Simultaneous_Mode_Master_Slave.py script, and I found that s

imultaneous 

scanning and advertising is not tested, so in fact,there is no example to show scanning and advertising at the same time. 

This is my functions call and configuration:

/*---------------------------------------------------------------------------*

 /

Stack mode : 0x04

gap_role = GAP_PERIPHERAL_ROLE_IDB05A1 | GAP_CENTRAL_ROLE_IDB05A1;

status = aci_gap_init_IDB05A1(gap_role,

0,

strlen(local_name)-2,

&service_handle,

&dev_name_char_handle,

&appearance_char_handle);

/*---------------------------------------------------------------------------*

 /

After initializing the gap role, I start a scanning:

/*---------------------------------------------------------------------------*

 /

aci_gap_start_general_discovery_proc(((SCAN_INTERVAL*1000)/(625)),

((SCAN_WINDOW*1000)/(625)),

PUBLIC_ADDR,

0x00)

/*---------------------------------------------------------------------------*

 /

at this level, the scanning works well, The BlueNRG scans the adv packets and I have my EVT_LE_ADVERTISING_REPORT events.

When I scan a specific Advertising Data, I start the advertising without setting any advertising data:

/*---------------------------------------------------------------------------*

 /

 status = aci_gap_set_discoverable(ADV_IND, // Advertising_Event_Type

0x0320,

0x0320,

PUBLIC_ADDR, // Address_Type

NO_WHITE_LIST_USE, 

NULL

, 

NULL

, 

NULL,

NULL,

NULL,

NULL); 

/*---------------------------------------------------------------------------*

 /

 and here I obtaint a BLE_STATUS_TIMEOUT. 

I hope these information will help to get any answer about this issue.

Kind regards,

M.BRA�K

Scott Löhr
Scott Löhr
Senior III
April 27, 2017
Posted on April 27, 2017 at 17:48

It looks like you are running this from a tool, and my only experience is running from debugger with actual code interacting with BlueNRG-MS over SPI, so I don't know where is the 'timeout' for your scenario - it seems there should be a return value, either success or error code ... a timeout would indicate SPI bus hang or something bad outside of just advertising/scanning request.

When you show 'Stack mode : 0x04', I suppose this means that for sure you got success from your call to aci_hal_write_config_data(CONFIG_DATA_MODE_OFFSET, CONFIG_DATA_MODE_LEN,... ?

Perhaps you can ensure that your advertising intervals of 0x0320 are achievable with your scan intervals of (SCAN_INTERVAL*1000)/(625) - perhaps you need to reduce scan window to allow time for the advertising?

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