Compiler/CC2650: I wold like to connect a specific peripheral via device name.

Louis Wang

Part Number: CC2650

Tool/software: TI C/C++ Compiler

Hi All,
I am using CC2650 chip with ble_cc26xx_2_01_00_44423 for test. I am usin SimpleBLECentral project for Central device.
I have a Peripheral device which name is TEST_PERIPHERAL. It can be finded in my cellphone.

I wold like to connect a specific peripheral via device name.
As I know "when receive an advertisment packet or a scan response that will produce a GAP_DEVICE_INFO_EVENT",
So I add some code to test. Please refer to following picture.

It's not work. I can not see line 672 ane any peripjeral.
Why does not into case GAP_DEVICE_INFO_EVENT ?

Best Regards,

Louis

over 6 years ago

0 Christin Lee over 6 years ago

TI__Guru 56215 points

Hi,

Since you are just starting with our CC2650, I would recommend you to use ble_cc26xx_2_02_02_xxxx instead.

Make sure your scan window is longer than the advertising interval.
To configure the scan interval and window, please do
GAP_SetParamValue(TGAP_GEN_DISC_SCAN_INT , theScanIntervalYouWant);
GAP_SetParamValue(TGAP_GEN_DISC_SCAN_WIND , theScanWindowYouWant);
#define TGAP_GEN_DISC_SCAN_INT 16 //!< Scan interval used during Link Layer Scanning state, when in General Discovery proc (n * 0.625 mSec)
#define TGAP_GEN_DISC_SCAN_WIND 17 //!< Scan window used during Link Layer Scanning state, when in General Discovery proc (n * 0.625 mSec)

0 Louis Wang over 6 years ago in reply to Christin Lee

Prodigy 70 points

Hi Christin Lee
Thanks your quickly response.
The gap.h default define
#define TGAP_GEN_DISC_SCAN_INT 16 //16*0.625=10ms
#define TGAP_GEN_DISC_SCAN_WIND 17 //17*0.625=10.625ms
The scan window is longer than the advertising interval already.
Should I need use GAP_SetParamValue() to set ScanInterval and ScanWindow? And where to add these codes ?
Furthermore, The advertising interval of Peripheral be set 40ms.

Best Regards,

Louis

0 Christin Lee over 6 years ago in reply to Louis Wang

TI__Guru 56215 points

The gap.h defines are the enums, not the actual values used for scanning.

You should write the code under
simple_central_init:
GAP_SetParamValue(TGAP_GEN_DISC_SCAN_INT , theScanIntervalYouWant);
GAP_SetParamValue(TGAP_GEN_DISC_SCAN_WIND , theScanWindowYouWant);

For the scan window to be longer than advertising interval you need to do
GAP_SetParamValue(TGAP_GEN_DISC_SCAN_INT , numberbiggerthan64);
GAP_SetParamValue(TGAP_GEN_DISC_SCAN_WIND , numberbiggerthan64);

0 Louis Wang over 6 years ago in reply to Christin Lee

Prodigy 70 points

Hi Christin
I writed the code under
simple_central_init:
GAP_SetParamValue(TGAP_GEN_DISC_SCAN_INT ,240 );
GAP_SetParamValue(TGAP_GEN_DISC_SCAN_WIND , 240);

240*0.625=150ms is big than advertising interval(40ms).

But SimpleBLECentral_processRoleEvent also can not get event:GAP_DEVICE_INFO_EVENT
static void SimpleBLECentral_processRoleEvent(gapCentralRoleEvent_t *pEvent)
{
...
case GAP_DEVICE_INFO_EVENT:
{
System_printf("%s():%d \r\n",__FUNCTION__,__LINE__);
if(pEvent->deviceInfo.eventType == GAP_ADRPT_SCAN_RSP)//scan response
{
//pEvent->deviceInfo.dataLen;
//pEvent->deviceInfo.pEvtData;
System_printf("%s():%d peripheral_name=%s\r\n",__FUNCTION__,__LINE__,pEvent->deviceInfo.pEvtData);
}
if(pEvent->deviceInfo.eventType == GAP_ADRPT_ADV_IND )//adv
{
//pEvent->deviceInfo.dataLen;
//pEvent->deviceInfo.pEvtData;
System_printf("%s():%d peripheral_name=%s\r\n",__FUNCTION__,__LINE__,pEvent->deviceInfo.pEvtData);
}
....
}

Could you please provide me some suggestions ?

Best Regards,
Louis

0 Christin Lee over 6 years ago in reply to Louis Wang

TI__Guru 56215 points

Can you take down the optimization and make sure DEFAULT_DEV_DISC_BY_SVC_UUID is set to FALSE?
Then set a breakpoint accordingly to check the result.

0 Christin Lee over 6 years ago in reply to Louis Wang

TI__Guru 56215 points

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Compiler/CC2650: I wold like to connect a specific peripheral via device name.