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CC2640R2F: CC2640R2F central scan

규영 배
Prodigy 180 points
Part Number: CC2640R2F


Tool/software: 

Hello, I have a question.
I am currently using the CC2640R2F central example, and the target I am trying to connect is a device based on the CC2640R2F peripheral.

This is the scan structure of the Bluetooth peripheral.


static uint8 advertData[32] = 
{
 8, // length of this data
 GAP_ADTYPE_LOCAL_NAME_COMPLETE,
 'G','F','M','-','4','0','0',
};

// Scan Response Data

static uint8_t scanRspData[] =
{
 0x02, // length of this data
 GAP_ADTYPE_FLAGS,
 GAP_ADTYPE_FLAGS_BREDR_NOT_SUPPORTED,

 // 25 byte beacon advertisement data
 // Preamble: Company ID - 0x000D for TI, refer to www.bluetooth.org/.../company-identifiers
 // Data type: Beacon (0x02)
 // Data length: 0x15
 // UUID: 00000000-0000-0000-0000-000000000000 (null beacon)
 // Major: 1 (0x0001)
 // Minor: 1 (0x0001)
 // Measured Power: -59 (0xc5)
 0x15, // length of this data including the data type byte
 GAP_ADTYPE_MANUFACTURER_SPECIFIC, // manufacturer specific adv data type
 0x4c, // Company ID - Fixed --> 0x4c (IOS) 
 0x00, // Company ID - Fixed
 0x02, // Data Type - Fixed
 0x15, // Data Length - Fixed
 0x00, // UUID - Variable based on different use cases/applications
 0x00, // UUID
 0x00, // UUID
 0x00, // UUID
 0x00, // UUID
 0x00, // UUID
 0x00, // UUID
 0x01, // UUID
 0x00, // UUID
 0x00, // UUID
 0x00, // UUID
 0x00, // UUID
 0x00, // UUID
 0x00, // UUID
 0x00, // UUID
 0x00, // UUID 24
 0x00, // UUID
 0x00, // UUID
 0x00, // UUID
};
The problem is that the central device is not scanning the peripheral devices. Is there a way to fix this?



  • 0
    TI__Expert 5300 points

    Hello,

    Thank you for reaching out! There could a lot of reasons for this behavior, so I will need some information from you to be able to successfully pinpoint the issue.

    1. Are you able to see the peripheral advertising on different devices?
    2. Is the central scanning any devices in general?
    3. Is the central scanning actively or passively?
    4. Can you provide the scanning parameters?

    Please provide an answer to my questions and we'll hopefully solve this issue!

    Best regards,

    Tarek D

  • 0 in reply to Tarek D
    Prodigy 180 points 
    Hello, this is about the parameters and functions of the central device.

1. Currently, various devices are being searched in the central device.

2. The scanning device is using the launchpad.

3. The scan is currently being manually scanned using the keys on the launchpad for testing.

4. These are the scan parameter values.
GapScan_setPhyParams(DEFAULT_SCAN_PHY, SCAN_TYPE_PASSIVE,
SCAN_PARAM_DFLT_INTERVAL, SCAN_PARAM_DFLT_INTERVAL);

// Filtering parameters
uint16_t rptFields = SC_ADV_RPT_FIELDS;
GapScan_setParam(SCAN_PARAM_RPT_FIELDS, &rptFields);

uint8_t scanPhy = DEFAULT_SCAN_PHY;
GapScan_setParam(SCAN_PARAM_PRIM_PHYS, &scanPhy);

uint8_t dupFilter = SCAN_FLT_DUP_ENABLE;
GapScan_setParam(SCAN_PARAM_FLT_DUP, &dupFilter);

uint16_t pduFilter = SCAN_FLT_PDU_CONNECTABLE_ONLY | SCAN_FLT_PDU_COMPLETE_ONLY;
GapScan_setParam(SCAN_PARAM_FLT_PDU_TYPE, &pduFilter);
  • 0 in reply to 규영 배
    TI__Expert 5300 points

    Hello,

    Thank you for providing this information! I believe the issue is in your scan parameters. A BLE central cannot connect to a peripheral if it's scanning passively. I believe changing the scanning to active should solve your problem!

    Best Regards,

    Tarek D