Texas Instruments CC2650DK Benutzerhandbuch
IEEE 802.15.4
Table 23-58. IEEE 802.15.4 CSMA-CA Command Structure (continued)
Bytes
Field Name
Bits
Bit Field Name
Type
Description
The BE parameter from the IEEE 802.15.4
20
BE
R/W
CSMA-CA algorithm
The number of remaining periods from a
21
remainingPeriods
R/W
paused backoff countdown
22
lastRssi
R
RSSI measured at the last CCA operation
Trigger that causes the device to end the
23
endTrigger
W
CSMA-CA operation
24–27
lastTimeStamp
R
Time of the last CCA operation
28–31
endTime
W
Time parameter for endTrigger
Table 23-59. IEEE 802.15.4 TX Command Structure
Bytes
Field Name
Bits
Bit Field Name
Type
Description
0: Find PHY header automatically.
0
bIncludePhyHdr
W
1: Insert PHY header from the buffer.
0: Append automatically calculated CRC.
1
bIncludeCrc
W
1: Insert FCS (CRC) from the buffer.
14
txOpt
2
Reserved
Most significant bits of payload length. Should only
3–7
payloadLenMsb
W
be nonzero to create long non-standard packets for
test purposes
test purposes
15
payloadLen
W
Number of bytes in the payload
16–19
pPayload
W
Pointer to payload buffer of size payloadLen
20–23
timeStamp
R
Time stamp of transmitted frame
Table 23-60. IEEE 802.15.4 Recieve ACK Command Structure
Bytes
Field Name
Type
Description
14
seqNo
W
Sequence number to expect
Trigger that causes the device to give up
15
endTrigger
W
acknowledgment reception
16–19
endTime
W
Time parameter for endTrigger
Table 23-61. IEEE 802.15.4 Update Radio Settings Command Structure
Bytes
Field Name
Type
Description
14–15
Reserved
16–19
pRegOverride
W
Pointer to a list of hardware registers to override
23.5.1.2 IEEE 802.15.4 Immediate Command Structures
Table 23-62. IEEE 802.15.4 Modify CCA Immediate Command Structure
Bytes
Field Name
Type
Description
0–1
commandNo
W
The command number
New value of ccaOpt for the running background
2
newCcaOpt
W
level operation, see
for details
New value of ccaRssiThr for the running
3
newCcaRssiThr
W
background level operation
1496
Radio
SWCU117A – February 2015 – Revised March 2015
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