Pm designer operation manual – B&B Electronics WOP-2121V-N4AE - Manual User Manual
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14
PM Designer Operation Manual
14-17
CHAPTER 14 USING MACROS
SUM
Format
P1
= SUM(P2,P3)
Data Type
U/S/UD/SD/F
Function
Calculates the sum of the value in an array starting from P2 with P3 elements and saves the
result in P1.
P1 (I)
The location to save the result.
P2 (I)
The starting location of the array.
P3 (I/C)
The size of the array.
Example 1
$U100
= SUM(
$U200
,
16
) (F)
/* Calculate the sum of 16 floating point numbers starting from
$U200 and save the result in $U100 */
XSUM
Format
P1
= XSUM(P2,P3)
Data Type
U/UD
Function
Calculates one element XOR (Bitwise Exclusive OR) sum of all the P3 elements in an array
starting from P2 and saves the result in P1.
P1 (I)
The location to save the result.
P2 (I)
The starting location of the array.
P3 (I/C)
The size of the array.
Example 1
$U100
= XSUM(
$U200
,
5
) (UD)
/* Perform XOR sum of 5 32-bit unsigned numbers starting from
$U200 and save the result in $U100. Another expression of XOR sum is $U100 = $U200 ^
$U202 ^ $U204 ^ $U206 ^ $U208 (UD) */
$U100
=
1001B
$U101
=
1100B
$U102
=
0110B
$U120
=
XSUM(
$U100,
3
)
/* $U120=0011B
*/
SWAP
Format
SWAP(P1,P2)
Data Type
U
Function
Swaps the low byte and high byte of every word in a word array starting from P1 with P2 words.
P1 (I)
The starting location of the array.
P2 (I/C)
The size of the array.
Example 1
$U120
=
1111111100000000B
$U121
=
1000000100000000B
SWAP(
$U120
,
2
)
/*
The value of $U120 will be 0000000011111111B, The value of $U121 will
be 000000010000001B */