LP5569RTWR datasheet(29/86 Pages) TI1

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LP5569

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SNVSAP8 – JULY 2017

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Table 5. LED Mapping Instructions (continued)

load_end

Define the last address of the LED mapping table in SRAM.

Last address at 03h: load_end

03h ; Last address at 03h

map_sel

Connect one LED driver to the LED engine.

map_sel 0 ; Select LED0 as

output

map_clr

Clear the LED driver mappings in an engine

map_clr

map_next

Select the next address in the LED mapping table and set that address

active.

map_next

map_prev

Select the previous address in the LED mapping table and set that

address active.

map_prev

load_next

Move the mapping-table pointer to the next address.

load_next

load_prev

Move the mapping-table pointer to the previous address.

load_prev

load_addr

Set the mapping-table pointer to assigned address.

load_addr 02h ; Set pointer to

02h

map_addr

Set the mapping-table pointer to assigned address and set that address

active.

map_addr 02h ; Set mapping to

02h

(1)

This opcode is used with numerical operands.

(2)

This opcode is used with variables.

(3)

This is a new instruction, not available in LP5523 or LP55231

Table 6. Branch Instructions

INSTRUCTION

USAGE

COMPILER EXAMPLE

rst

Reset program counter to zero.

Reset

branch(1)

Branch to address. The number of loops can be set to a value or

do an infinite loop.

Do 20 loops to loop1 label: branch 20, loop1

branch(2)

Branch to address. The loop count can be one of four variables A,

B, C, or D.

Do 20 loops to loop1 label: ld ra, 30 branch

ra, loop1

int

Send an interrupt to the host system by pulling the GPIO/TRIG/INT

pin low.

int

end

End program execution and reset the program counter to zero.

Can also the set GPIO/TRIG/INT pin high and/or reset mapped

LED PWM and engine LED mapping.

End and reset LEDs:

trigger

Wait or send trigger. The trigger can be sent or received from an

external pin or another engine.

Wait for external trigger: trigger w{e}

trig_clear(3)

Clear pending triggers.

trig_clear

jne

Jump if not equal. A != B

Jump to loop1 if A != B: jne ra, rb, loop1

Jump if less. A < B

Jump to loop1 if A < B : jl ra, rb, loop1

jge

Jump if greater or equal. A

≥ B

Jump to loop1 if A >= B: jge ra, rb, loop1

Jump if equal. A = B

Jump to loop1 if A = B: je ra, rb, loop1

(1)

This opcode is used with numerical operands.

(2)

This opcode is used with variables.

Table 7. Data Transfer and Arithmetic

INSTRUCTION

USAGE

COMPILER EXAMPLE

ld(1)

Assign a value to a variable.

Load value 33h to local variable A: ld ra, 33

add(1)

Add the 8-bit value to the variable value.

Add value 11h to local variable A: add ra, 11

add(2)

Add the value of variable 3 (global variable D) to the value of variable 2

(global variable C) and store the result in variable 1 (local variable A).

Add the value in rd to rc and store in ra: add

ra, rc, rd

sub(1)

Subtract the 8-bit value from the variable value.

Subtract value 11h from local variable A: sub

ra, 11

sub(2)

Subtract the value of variable 3 (global variable D) from the value of

variable 2 (global variable C) and store the result in variable 1 (local

variable A).

Subtract the value in rd from rc and store in

ra: sub ra, rc, rd

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