LAUNCHXL-CC1352R1: IEEE foreground and background commands in CSMA

Please provide us with the setup of all the commands you are using and how you have set up the chain, so that we can take a look at it.

BR

Siri

Commands (skipped 0 or null fields):

cmdRadioSetup.commandNo = CMD_RADIO_SETUP;
cmdRadioSetup.startTrigger.triggerType = TRIG_NOW;
cmdRadioSetup.condition.rule = COND_NEVER;
cmdRadioSetup.mode = 1; // IEEE 802.15.4 mode
cmdRadioSetup.txPower = 0x4E63;
cmdRadioSetup.pRegOverride = pOverrides;


cmdFs.commandNo = CMD_FS;
cmdFs.startTrigger.triggerType = TRIG_NOW;
cmdFs.frequency = 0x096F;
cmdFs.fractFreq = 0x0000;
cmdFs.synthConf.bTxMode = 0x1;


cmdIeeeTx.commandNo = CMD_IEEE_TX;
cmdIeeeTx.status = IDLE;
cmdIeeeTx.startTrigger.triggerType = TRIG_NOW;
cmdIeeeTx.startTrigger.pastTrig = 1;
cmdIeeeTx.payloadLen = packetLength;
cmdIeeeTx.pPayload = packet; // (address of array)


cmdIeeeEdScan.commandNo = 0x2802;
cmdIeeeEdScan.channel = 13;
cmdIeeeEdScan.startTrigger.triggerType = TRIG_ABSTIME;
cmdIeeeEdScan.endTrigger.triggerType = TRIG_ABSTIME;
cmdIeeeEdScan.startTime = currentTime;
cmdIeeeEdScan.endTime = cmdIeeeEdScan + 10000;


cmdIeeeCsma.commandNo = 0x2C02;
cmdIeeeCsma.startTime = currentTime + 400;
cmdIeeeCsma.endTime = cmdIeeeCsma + 2000;
cmdIeeeCsma.startTrigger.triggerType = TRIG_ABSTIME;
cmdIeeeCsma.endTrigger.triggerType = TRIG_ABSTIME;

cmdIeeeCsma.randomState = rand();
cmdIeeeCsma.csmaConfig.initCW = 1;
cmdIeeeCsma.csmaConfig.bSlotted = 0;
cmdIeeeCsma.NB = 0;
cmdIeeeCsma.BE = 3;
cmdIeeeCsma.remainPeriods = 0;
cmdIeeeCsma.macMaxBE = 4;
cmdIeeeCsma.macMaxCSMABackoffs = 4;

CurrentTime is uint32_t variable set by RF_gerCurrentTime and incremented by 100000 at beginning of every sequence, so it's always in future.
I tried two versions of chaining, first:

// EdScan -> Csma -> Fs -> Tx
cmdIeeeEdScan.pNextOp = (RF_Op*)&cmdIeeeCsma;
cmdIeeeCsma.pNextOp = (RF_Op*)&cmdFs;
cmdFs.pNextOp = (RF_Op*)&cmdIeeeTx;

// schedule command
RF_scheduleCmd(rfHandle, (RF_Op*)&cmdIeeeEdScan, &edParams, &callback, 0xFFFFFFFF);

second:

// EdScan
// Csma -> Fs -> Tx
cmdIeeeEdScan.pNextOp = NULL;
cmdIeeeCsma.pNextOp = (RF_Op*)&cmdFs;
cmdFs.pNextOp = (RF_Op*)&cmdIeeeTx;

// schedule commands
RF_scheduleCmd(rfHandle, (RF_Op*)&cmdIeeeEdScan, &edParams, &callback, 0xFFFFFFFF);
RF_scheduleCmd(rfHandle, (RF_Op*)&cmdIeeeCsma, &csmaParams, &csmaCallback, 0xFFFFFFFF);

Both RF_schedulerCmdParams were only initialized without any changed fields. I'm using commands generated in SmartRF Studio, values for csma are from CC13x2 manual.

Unfortunately I have so far not been able to find any example code for you, but I have some comment.

the first chain will not work, as the edScan and Scma commands must run at the same time.

The second approach is more correct, but I think you need to remove the CMD_FS.

Also, I am not sure about all your timing/triggers. As a starting point, try to get it to work without using any end triggers on your commands.

BR

Siri

I made it works without cmdFs and commands changes:

cmdIeeeEdScan.startTime = time;
cmdIeeeEdScan.startTrigger.triggerType = TRIG_ABSTIME;
cmdIeeeEdScan.endTrigger.triggerType = TRIG_NEVER;
cmdIeeeCsma.startTime = time;
cmdIeeeCsma.startTrigger.triggerType = TRIG_ABSTIME;
cmdIeeeCsma.startTrigger.pastTrig = 1;

Now I'll try test it with SmartRF Studio transmit, I'll write if encounter a problem. Thank you for help!