CC2640R2F: Is it possible get real connection parameters?

Kimi Hu

Part Number: CC2640R2F

Hi all,

If host send "parameters update" within connection, can I get real parameters(connection interval, slave latency) in Stack? Thanks

over 7 years ago

0 YiKai Chen over 7 years ago

Guru 735695 points

Evan W Marie H Christin Lee Is there any callback or parameter we can use to know connection interval and slave latency parameter is changed?

0 Tim C over 7 years ago in reply to YiKai Chen

TI__Mastermind 34660 points

Yes there is, depending on the stack version. What stack version is this?

0 YiKai Chen over 7 years ago in reply to Tim C

Guru 735695 points

We are using latest CC2640R2 SDK 2.20.00.49

0 Tim C over 7 years ago in reply to YiKai Chen

TI__Mastermind 34660 points

There are two stacks in that installer (BLE 3.02.00.49 and BLE5 1.01.02.49). Which one are you referring to?

0 YiKai Chen over 7 years ago in reply to Tim C

Guru 735695 points

BLE 3.02.00.49

0 Tim C over 7 years ago in reply to YiKai Chen

TI__Mastermind 34660 points

You can find the current connection parameters from linkDB_GetInfo().

0 Kimi Hu over 7 years ago in reply to Tim C

Mastermind 6165 points

Hi Tim,

linkDB_GetInfo() can get connection interval, can it get slave latency?

0 Tim C over 7 years ago in reply to Kimi Hu

TI__Mastermind 34660 points

No, unfortunately the ble3 stack only has connection interval in linkDBInfo_t. The ble5 stack does have the latency and timeout but I guess that doesn't help you here.

If you need to know these, you'll need to track them in the application using events received from the stack, starting when the GAP_LINK_ESTABLISHED_EVENT is received and updating every time a GAP_LINK_PARAM_UPDATE_EVENT is received

0 Kimi Hu over 7 years ago in reply to Tim C

Mastermind 6165 points

Hi Tim,

OK, I will test it. Thank you.

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CC2640R2F: Is it possible get real connection parameters?