CCS/CC1310: riduction the trasmission time

Massimo Gravaghi

Part Number: CC1310

Tool/software: Code Composer Studio

Hello,
We made a project with your CC1310 controller
Starting from your example firware and the launchpad demoboard, we developed our firmware.
every 2 seconds the C1310 transmits a data packet and then switches to receive
We measured how long it takes to send the packet 100ms
Is it possible to reduce the transmission time?

Best regards,
Gravaghi Massimo

over 5 years ago

0 Ryan Brown1 over 5 years ago

TI__Guru**** 217607 points

Hello Gravaghi,

What example are you using and how are you measuring the time? The measurement is much longer than expected but several factors must be accounted for. Please refer to the following resources:

https://e2e.ti.com/support/wireless-connectivity/sub-1-ghz/f/156/t/923364
https://e2e.ti.com/support/wireless-connectivity/sub-1-ghz/f/156/t/826090
https://dev.ti.com/tirex/content/simplelink_cc13x0_sdk_4_10_01_01/docs/proprietary-rf/proprietary-rf-users-guide/proprietary-rf-guide/proprietary-rf-index-cc13x0.html

Regards,
Ryan

0 TER over 5 years ago in reply to Ryan Brown1

TI__Guru**** 317180 points

Gravaghi, please state which datarate you are using since without this information it's not possible to comment on the expected on air time. We would also need the number of preamble byte, sync bytes and payload bytess.

0 Massimo Gravaghi over 5 years ago in reply to TER

Prodigy 170 points

Hello,

I send our firmware so you can analyze if there are errors in the code.

Any improvement is accepted

Best regardsCC1310F128RHB_REV00.zip

0 Ryan Brown1 over 5 years ago in reply to Massimo Gravaghi

TI__Guru**** 217607 points

Hi Gravaghi,

It appears that you are intentionally setting the absolute time to transmit the packet inside EasyLink_TxPacket to 100 ms.

            /* Add a Tx delay for > 500ms, so that the abort kicks in and brakes the burst */
            if(EasyLink_getAbsTime(&absTime) != EasyLink_Status_Success)
            {
                // Problem getting absolute time
            }

            if(txBurstSize++ >= RFEASYLINKTX_BURST_SIZE)
            {
                /* Set Tx absolute time to current time + 1s */

                txPacket.absTime = absTime + EasyLink_ms_To_RadioTime(1000);
                txBurstSize = 0;
            }
            /* Else set the next packet in burst to Tx in 100ms */
            else
            {
                /* Set Tx absolute time to current time + 100ms */
                txPacket.absTime = absTime + EasyLink_ms_To_RadioTime(100);
            }

            /*
             * Set the Transmit done flag to false, callback will set it to true
             * Also set the sleep counter to 0
             */
            txDoneFlag = false;
            txSleepPeriodsElapsed = 0;

            /* Transmit the packet */
            EasyLink_transmitAsync(&txPacket, txDoneCb);

Regards,
Ryan

Sub-1 GHz

Sub-1 GHz forum

CCS/CC1310: riduction the trasmission time