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RF Core HAL

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Table 23-33. Additional End Causes for CMD_COUNT_BRANCH

Condition Status Code Result

Finished operation with counter = 0 when being started DONE_OK TRUE

Finished operation with counter > 0 after decrementing DONE_OK TRUE

DONE_COUNTDO

Finished operation with counter = 0 after decrementing FALSE

23.3.3.1.14 CMD_PATTERN_CHECK: Check a Value in Memory Against a Pattern

Command ID number: 0x0813

CMD_PATTERN_CHECK is a radio operation command. In addition to the parameters listed in

Table 23-8, the command structure contains the fields listed in Table 23-34.

Table 23-34. CMD_PATTERN_CHECK Command Format

Bytes Field Name Bits Bit Field Name Type Description

Operation to perform

0: True if value == compareVal

0–1 operation W 1: True if value < compareVal

2: True if value > compareVal

3: Reserved

If 1, interchange the four bytes of the value, so that they

2 bByteRev W

are read most-significant-byte-first.

14–15 patternOpt 3 bBitRev W If 1, perform bit reversal of the value

0: Treat value and compareVal as unsigned

1–31: Treat value and compareVal as signed, where

4–8 signExtend W

the value gives the number of the most significant bit in

the signed number.

0: Use pValue as a pointer

9 bRxVal W 1: Use pValue as a signed offset to the start of the last

committed RX entry element

16–19 pNextOpIfOk W Pointer to next operation if comparison result was true

Pointer to read from, or offset from last RX entry if

20–23 pValue W

patternOpt.bRxVal == 1

24–27 mask W Bit mask to apply before comparison

28–31 compareVal W Value to compare to

On start, the radio CPU reads a 4-byte value from the location pointed to by pValue if patternOpt.bRxVal

== 0. If patternOpt.bRxVal == 1, the location to read from is found by taking the pointer to the start of the

last committed Rx entry element and adding the signed number found in pValue as a byte offset. In either

case, this pointer does not need to be 4-byte aligned; if not, the value is read byte by byte.

The value is then subject to the following operations in this order:

1. If patternOpt.bByteRev == 1, interchange byte 3 with byte 0, and byte 1 with byte 2, as if the bytes had

been read most-significant-byte-first.

2. If patternOpt.bBitRev == 1, reverse the bit order of the entire 32-bit word.

3. Perform a bitwise ‘AND’ operation between the value and mask.

4. If patternOpt.signExtend > 0, copy the value of bit number patternOpt.signExtend (where bit 0 is the

least significant bit) into all the more significant bits.

5. Perform a compare operation between the resulting value and compareVal, depending on

patternOpt.operation, see Table 23-34. The compare operation is unsigned if

patternOpt.signExtend == 0, otherwise signed.

If patternOpt.operation or pValue have illegal values, the operation ends with status ERROR_PAR.

Otherwise, the operation ends by one of the causes listed in Table 23-13 or Table 23-35, depending on

the result of the comparison in step 5 in the previous list. If the comparison result was true, the next radio

operation command to run is given by pNextOpIfOk instead of pNextOp.

1480

Radio SWCU117A–February 2015–Revised March 2015

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