Texas Instruments BOOST-LP5569EVM, Руководство пользователя

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LP5569 Programming
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34 SNVU564A – July 2017 – Revised August 2017
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Copyright © 2017, Texas Instruments Incorporated
Using the BOOST-LP5569EVM Evaluation Module
Table 7. Data Transfer and Arithmetic Instructions
INSTRUCTION
SYNTAX
FUNCTION EXAMPLE 16-BIT ASSEMBLED
BIT SEQUENCE
ASSEMBLED CODE
(HEX)
ld var, value
var is a variable (ra, rb,
rc);
value is a constant (0 to
255 or 0 to FFh)
Assigns a value to a
variable ld ra, 10;
Variable A = 10. 1001 0000 0000 1010 900A
add var, value
var is a variable (ra, rb,
rc);
value is a constant (0 to
255 or 0 to FFh)
Add the 8-bit value to
the variable value. add ra, 30;
A = A + 30. 1001 0001 0001 1110 911E
add var1, var2, var3
var1 is a variable (ra, rb,
rc);
var2 is a variable (ra, rb,
rc, rd);
var3 is a variable (ra, rb,
rc, rd).
Add the value of var3 to
the value of var2 and
store the result in var1. add ra, rc, rd;
A = C + D. 1001 0011 0000 1010 930B
sub var, value
var is a variable (ra, rb,
rc);
value is a constant (0 to
255 or 0 to FFh)
Subtract the 8-bit value
from the variable value. sub ra, 30;
A = A – 30 1001 0010 0001 1110 921E
sub var1, var2, var3
var1 is a variable (ra, rb,
rc);
var2 is a variable (ra, rb,
rc, rd);
var3 is a variable (ra, rb,
rc, rd).
Subtract the value of
var3 from the value of
var2 and store the result
in var1. sub ra, rc, rd;
A = C – D 1001 0011 0001 1011 931B
3.7 Programming Examples
This is a demonstration example to display a slow ramp of all three colors for each tri-color LED.
Table 8. Example .src file
Label/Seg INSTRUCTION PARAMETERS
ENG1: dw 0000 0001 0001 0001b
ENG2: dw 0000 0000 1000 1100b
ENG3: dw 0000 0000 0110 0010b
ALL: dw 0000 0001 1111 1111b
.segment program1
map_addr ALL
set_pwm 0
map_addr ENG1
trigger s{2|3}
loop1:
ramp 2, 255
ramp 2, –255
ramp 2, -255
branch 0, loop1
rst
.segment program2
trigger w{1}
map_addr ENG2