CC2652R: Obtaining 4+ Mbps modulation on CC2652R

Hello Daniel,

We gave not yet tested proprietary GFSK mode on CC2652. However, if you already have the link at 200kbps, by changing the receiver settings, you could go up to 500kbps. For higher datarates, custom settings might be necessary and this is not available yet.

If you need a device that can provide high throughput, our recommendation would be to use CC2640R2 which can support upto 5mbps datarate.

Regards,

Hi SVS,

Thanks for the update.

Do you have an ETA for GFSK qualification for the 2652? I'd even be happy with preliminary values.

If you're able to do this, could you describe the custom setting register space and allowable values, and I can try to sweep them using some code and look for a working setting?

As a last resort, I already have 2 of the 2652 LaunchPads that I purchased for development. Would it either be possible to:
1. RMA and refund the 2652 LaunchPads?
2. Exchange the 2652 LaunchPads for 2640 LaunchPads?

Thanks,

Daniel

In the spirit of getting more data, I wrote a script to sweep through a number of settings and measure TX rate and RX rate using two LaunchPads.

I can edge right up to 450kbps RX, but any faster rates and no data is received. In the picture attached, the X axis is TX rate, the Y axis is rxBw setting, and the Z axis is RX rate.

Is there any chance that TI can provide the settings (even preliminary) for faster rates?

(Edited to fix units on max RX rate)

Hi Daniel,

Thank you for sharing this data with us.

As previously mentioned, we have not tested and do not have settings for higher data rates on CC2652 device yet. I cannot share our roadmap on the forum either, please send me a friend request if you need further information on this.

What are your project timelines? If you need high datarate today, the best option is to use CC2640R2 and we can help you to get HS mode working on this device.

Please contact TI store for exchanging LPs if you choose to go that route.

Regards,

Before I go down the 2640 route, can you provide documentation regarding the setup/requirements required to hit 5mbps on the 2640? This thread seems to suggest that its a different API and has special requirements: e2e.ti.com/.../701877

Furthermore, this post (from you?) seems to suggest that the 2640 is the exact same situation as the 2652? e2e.ti.com/.../735165

Hello Daniel,

We do not have this mode released in SDK or SmartRF studio. However, on CC2640R2 device, this mode can be implemented without patches and we can help you with the settings. We do not recommend using CC2640 for this mode.

Regards,