CC2538 data rate

Pranav Lekhi

Other Parts Discussed in Thread: CC2538, Z-STACK

I'm using CC2538 with Z-stack Home, the sample temperature sensor example. I want to increase the data rate and have been able to send 20 packets per second.

I did so by specifying the value of delay between packets as follows:

#define SAMPLETEMPERATURESENSOR_REPORT_INTERVAL 50

in zcl_sampletemperaturesensor.c

However, when I go above this, I'm having certain problems. The end device gets orphaned and the received data is distorted. Could someone provide a suggestion to resolve this problem.

over 10 years ago

0 YiKai Chen over 10 years ago

Guru 735695 points

I would suggest you to combine data to send together. For example, you can send 20 temperature data in a packet per second. In this way, you won't create too many over the air messages.

0 Pranav Lekhi over 10 years ago in reply to YiKai Chen

Prodigy 220 points

Thanks YK Chen,
I tried that but there's a problem with reconstructing the input wave. I need to give a sin wave at the input and reconstruct it at the receiver. I tried sending 10 samples in a packet but I got a distorted wave.

0 YiKai Chen over 10 years ago in reply to Pranav Lekhi

Guru 735695 points

From my point of view, this is not related to how fast you send packets. If you only send one temperature data per message, you will waste bandwidth on Zigbee payload. I suggest you combine several temperature data in a message and mane increase number of samples per second.

0 Pranav Lekhi over 10 years ago in reply to YiKai Chen

Prodigy 220 points

Thanks YK Chen
I have kept packet delay at 50ms and I'm sending 10 samples in a packet. Could you suggest any change in the values because I'm not able to reconstruct using the current configuration.

0 YiKai Chen over 10 years ago in reply to Pranav Lekhi

Guru 735695 points

I would suggest you to send packet delay at 100ms and send 20 samples in a packet.

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CC2538 data rate