CC2640R2F: Low-Latency RF-Link

Shlomi Yehezkia

Mastermind 6150 points

Part Number: CC2640R2F

Hi Team,

Please advise if TI have a Low-Latency (less than 1 ms) RF-Link.

I need to synchronize two systems (need two triggers) OTA.

Thanks,

Shlomi

over 7 years ago

0 Tim C over 7 years ago

TI__Mastermind 34660 points

Are you looking to do this with BLE? If so, no this is not possible. At least it is not possible for 1 ms connection intervals (7.5 ms is the minimum).

0 YiKai Chen over 7 years ago

Guru 735695 points

Maybe you can elaborate your application so we can suggest more precisely.

0 Shlomi Yehezkia over 7 years ago in reply to Tim C

Mastermind 6150 points

Hi Tim,

BLE is not must, I looking for technology that can do it for less 1ms connection intervals, what about propriety that work at 2.4G or sub 1G?

Thanks,

Shlomi

0 TER over 7 years ago in reply to Shlomi Yehezkia

TI__Guru**** 317180 points

I second YK here, could you describe the application in more detail? It's not clear how you define what should be less than 1 ms.

0 Shlomi Yehezkia over 7 years ago in reply to TER

Mastermind 6150 points

Hi,

I need to sync between ECG output interrupt of some kind, and my camera (which measures the PCG).

The sync has to be made in order to put the SAME P-Q-R-S-T complex on the same time-line; meaning: we must know that a certain P-Q-R-S-T complex captured by the camera is referring to the same P-Q-R-S-T complex which was measured by the ECG, in order to compare the results (we can conclude several things from the deviations between the Electrical signals – ECG, and the Visible signal – PCG).

I hope this explains the issue better.

Thanks,

Shlomi

0 IUsedToBeARealPerson (M-W) over 7 years ago in reply to Shlomi Yehezkia

TI__Guru 58425 points

Hi Shlomi,

Could you elaborate on "latency" in your application? Is it latency as in from interrupt until receiving the packet on the other end, or is it the minimum time between back-to-back packets?

0 Shlomi Yehezkia over 7 years ago in reply to IUsedToBeARealPerson (M-W)

Mastermind 6150 points

Please explain what do you mean by “the minimum time between back-to-back packets”

0 TER over 7 years ago in reply to Shlomi Yehezkia

TI__Guru**** 317180 points

The time from packet n to packet n+1.

Please explain with your own words how you define latency in this project.

0 TER over 7 years ago in reply to TER

TI__Guru**** 317180 points

Have you tested with the rfPacketRx/ rfPacketTx examples in the SDK to see if you get the wanted performance?

0 Shlomi Yehezkia over 7 years ago in reply to TER

Mastermind 6150 points

No, Did I need for that any HW?

0 TER over 7 years ago in reply to Shlomi Yehezkia

TI__Guru**** 317180 points

You can test this on a CC2640R2 LP.

What is the definition of latency in your case?

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CC2640R2F: Low-Latency RF-Link