2878d3aaa2
timing is very tight so we need an extra routine per timing type for sending a byte to the led strip.
407 lines
9.2 KiB
NASM
407 lines
9.2 KiB
NASM
; ***************************************************************************
|
|
; copyright : (C) 2024 by Martin Preuss
|
|
; email : martin@libchipcard.de
|
|
;
|
|
; ***************************************************************************
|
|
; * This file is part of the project "AqHome". *
|
|
; * Please see toplevel file COPYING of that project for license details. *
|
|
; ***************************************************************************
|
|
|
|
|
|
|
|
; ***************************************************************************
|
|
; defines
|
|
|
|
.equ SK6812_PATTERN_NUM = 3
|
|
|
|
.equ SK6812_MODE_OFF = 0
|
|
.equ SK6812_MODE_ON = 1
|
|
.equ SK6812_MODE_AUTO = 2
|
|
|
|
|
|
.equ SK6812_TYPE_BTF_NEW = 0
|
|
.equ SK6812_TYPE_NUM = 1
|
|
|
|
|
|
|
|
; ***************************************************************************
|
|
; data
|
|
|
|
.dseg
|
|
|
|
sk6812DataBegin:
|
|
sk6812NumLeds: .byte 1
|
|
sk6812Pattern: .byte 5*SK6812_PATTERN_NUM ; 1 byte num leds, 4 bytes colour (RGBW)
|
|
sk6812RGBW: .byte 4 ; current RGBW value
|
|
sk6812Mode: .byte 1
|
|
sk6812Type: .byte 1 ; which timing type to use
|
|
sk6812DataEnd:
|
|
|
|
|
|
|
|
; ***************************************************************************
|
|
; code
|
|
|
|
.cseg
|
|
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; @routine SK6812_Init
|
|
;
|
|
; @return CFLAG set if okay, clear on error
|
|
|
|
SK6812_Init:
|
|
ldi xh, HIGH(sk6812DataBegin)
|
|
ldi xl, LOW(sk6812DataBegin)
|
|
clr r16
|
|
ldi r17, (sk6812DataEnd-sk6812DataBegin)
|
|
rcall Utils_FillSram
|
|
|
|
ldi r16, SK6812_MODE_AUTO
|
|
sts sk6812Mode, r16
|
|
|
|
sbi SK6812_DDR, SK6812_PINNUM ; set to output
|
|
cbi SK6812_PORT, SK6812_PINNUM ; set LOW
|
|
ldi r16, 144
|
|
sts sk6812NumLeds, r16
|
|
|
|
rcall sk6812ReadConfFromEeprom
|
|
|
|
ldi r18, 1 ; ON (DEBUG)
|
|
rcall SK6812_SetState ; (r16, r17, r18, r19, r20, r21, r23, r24, r25)
|
|
|
|
sec
|
|
ret
|
|
SK6812_Init_error:
|
|
clc
|
|
ret
|
|
; @end
|
|
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; @routine SK6812_Fini
|
|
;
|
|
; @return CFLAG set if okay, clear on error
|
|
; USED:
|
|
|
|
SK6812_Fini:
|
|
sec
|
|
ret
|
|
; @end
|
|
|
|
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; @routine SK6812_SetState @global
|
|
;
|
|
; Set all LEDs to same colour according to state.
|
|
;
|
|
; @param r18 0: all LEDs off, otherwise all LEDs color stored in sk6812RGBW
|
|
; @clobbers r18, r19, r20, r21, (r16, r17, r23, r24, r25)
|
|
|
|
SK6812_SetState:
|
|
lds r16, sk6812Mode
|
|
cpi r16, SK6812_MODE_AUTO
|
|
brne SK6812_SetState_end
|
|
rjmp sk6812SetState
|
|
SK6812_SetState_end:
|
|
ret
|
|
; @end
|
|
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; @routine SK6812_SetMode @global
|
|
;
|
|
; @param r18 mode (SK6812_MODE_OFF, SK6812_MODE_ON, SK6812_MODE_AUTO)
|
|
; @clobbers r18, (r16, r17, r19, r20, r21, r23, r24, r25)
|
|
|
|
SK6812_SetMode:
|
|
sts sk6812Mode, r18
|
|
cpi r18, SK6812_MODE_OFF
|
|
breq SK6812_SetState_off
|
|
; cpi r18, SK6812_MODE_ON
|
|
; breq SK6812_SetState_on
|
|
rjmp SK6812_SetState_on
|
|
ret
|
|
SK6812_SetState_off:
|
|
clr r18
|
|
rjmp sk6812SetState ; (r16, r17, r18, r19, r20, r21, r23, r24, r25)
|
|
SK6812_SetState_on:
|
|
ldi r18, 1
|
|
rjmp sk6812SetState ; (r16, r17, r18, r19, r20, r21, r23, r24, r25)
|
|
; @end
|
|
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; @routine SK6812_SetRGBW @global
|
|
;
|
|
; Store new color for all LEDs.
|
|
;
|
|
; @param r18 red value
|
|
; @param r19 green value
|
|
; @param r20 blue color
|
|
; @param r21 white color
|
|
; @clobbers (r16, r17, r18, r19, r20, r21, r23, r24, r25, X)
|
|
|
|
SK6812_SetRGBW:
|
|
push r15
|
|
in r15, SREG
|
|
cli
|
|
sts sk6812RGBW, r18
|
|
sts sk6812RGBW+1, r19
|
|
sts sk6812RGBW+2, r20
|
|
sts sk6812RGBW+3, r21
|
|
rcall sk6812WriteConfToEeprom ; (R16, R17, X)
|
|
; no longer set state
|
|
; ldi r18, 1 ; ON
|
|
; rcall SK6812_SetState ; (r16, r17, r18, r19, r20, r21, r23, r24, r25)
|
|
out SREG, r15
|
|
pop r15
|
|
ret
|
|
; @end
|
|
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; @routine sk6812SetState
|
|
;
|
|
; Set all LEDs to same colour according to state.
|
|
;
|
|
; @param r18 0: all LEDs off, otherwise all LEDs color stored in sk6812RGBW
|
|
; @clobbers r18, r19, r20, r21, (r16, r17, r23, r24, r25)
|
|
|
|
sk6812SetState:
|
|
tst r18
|
|
breq sk6812SetState_off
|
|
lds r18, sk6812RGBW
|
|
lds r19, sk6812RGBW+1
|
|
lds r20, sk6812RGBW+2
|
|
lds r21, sk6812RGBW+3
|
|
rjmp sk6812SetState_haveValue
|
|
sk6812SetState_off:
|
|
clr r18
|
|
clr r19
|
|
clr r20
|
|
clr r21
|
|
sk6812SetState_haveValue:
|
|
rjmp sk6812SetAllColor ; (r16, r17, r23, r24, r25)
|
|
; @end
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; @routine sk6812SendPattern
|
|
;
|
|
; Send given pattern to LEDs.
|
|
;
|
|
; @param R22 number of 5-byte subpatterns
|
|
; @param X pointer to pattern (numleds, R, G, B, W)*SK6812_PATTERN_NUM
|
|
; @clobbers R18, R19, R20, R21, R22, R23, X (R16, R17)
|
|
|
|
sk6812SendPattern:
|
|
sk6812SendPattern_loop1:
|
|
ld r23, X+ ; num leds
|
|
tst r23
|
|
brne sk6812SendPattern_readandset
|
|
ret ; no leds, done
|
|
sk6812SendPattern_readandset:
|
|
ld r18, X+ ; R
|
|
ld r19, X+ ; G
|
|
ld r20, X+ ; B
|
|
ld r21, X+ ; W
|
|
sk6812SendPattern_loop2:
|
|
rcall sk6812SendQuadruple ; (r16, r17)
|
|
dec r23
|
|
brne sk6812SendPattern_loop2
|
|
dec r22
|
|
brne sk6812SendPattern_loop1
|
|
ret
|
|
; @end
|
|
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; @routine sk6812SetAllColor
|
|
;
|
|
; Set all LEDs to same colour.
|
|
;
|
|
; @param r18 red value
|
|
; @param r19 green value
|
|
; @param r20 blue value
|
|
; @param r21 white value
|
|
; @clobbers r23 (r16, r17, r24, r25)
|
|
|
|
sk6812SetAllColor:
|
|
push zl
|
|
push zh
|
|
rcall sk6812GetJumpTableEntryForCurrentType
|
|
brcc sk6812SetAllColor_done
|
|
sbi SK6812_DDR, SK6812_PINNUM ; set to output
|
|
cbi SK6812_PORT, SK6812_PINNUM
|
|
push r15
|
|
in r15, SREG
|
|
cli
|
|
; Utils_WaitNanoSecs 80000, 0, r22 ; wait for 80us
|
|
nop
|
|
nop
|
|
lds r23, sk6812NumLeds
|
|
sk6812SetAllColor_loop:
|
|
rcall sk6812SendQuadruple ; (r16, r17, r24, r25, Z)
|
|
dec r23
|
|
brne sk6812SetAllColor_loop
|
|
|
|
; reset
|
|
cbi SK6812_PORT, SK6812_PINNUM
|
|
Utils_WaitNanoSecs 80000, 0, r22 ; wait for 80us
|
|
|
|
; sbi SK6812_PORT, SK6812_PINNUM
|
|
|
|
out SREG, r15
|
|
pop r15
|
|
sk6812SetAllColor_done:
|
|
pop zh
|
|
pop zl
|
|
ret
|
|
; @end
|
|
|
|
|
|
|
|
; @clobbers r24
|
|
|
|
sk6812GetJumpTableEntryForCurrentType:
|
|
ldi zl, LOW(sk6812JumpTableSendByte)
|
|
ldi zh, HIGH(sk6812JumpTableSendByte)
|
|
lds r24, sk6812Type
|
|
cpi r24, SK6812_TYPE_NUM
|
|
brcc sk6812GetJumpTableEntryForCurrentType_ret
|
|
add zl, r24
|
|
adc zh, r24
|
|
sub zh, r24
|
|
sec
|
|
sk6812GetJumpTableEntryForCurrentType_ret:
|
|
ret
|
|
; @end
|
|
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; @routine sk6812SendQuadruple
|
|
;
|
|
; Sends GRBW
|
|
; @param r18 red value
|
|
; @param r19 green value
|
|
; @param r20 blue value
|
|
; @param r21 white value
|
|
; @param Z pointer to jumptable entry for SendByte function (called by ijmp)
|
|
; @clobbers r16 (r17, r24, r25)
|
|
|
|
sk6812SendQuadruple:
|
|
mov r16, r19 ; G
|
|
rcall sk6812SendByte ; (r16, r17, r24, r25)
|
|
mov r16, r18 ; R
|
|
rcall sk6812SendByte ; (r16, r17, r24, r25)
|
|
mov r16, r20 ; B
|
|
rcall sk6812SendByte ; (r16, r17, r24, r25)
|
|
mov r16, r21 ; W
|
|
rcall sk6812SendByte ; (r16, r17, r24, r25)
|
|
ret
|
|
; @end
|
|
|
|
|
|
|
|
sk6812SendByte:
|
|
ijmp
|
|
|
|
ret
|
|
; @end
|
|
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; @routine sk6812WriteConfToEeprom
|
|
;
|
|
; @clobbers r16, r17, X
|
|
|
|
sk6812WriteConfToEeprom:
|
|
push r15
|
|
in r15, SREG
|
|
cli
|
|
ldi xl, LOW(EEPROM_OFFS_SK6812_RGBW)
|
|
ldi xh, HIGH(EEPROM_OFFS_SK6812_RGBW)
|
|
lds r16, sk6812RGBW
|
|
rcall Eeprom_WriteByteIfChanged ; (R17)
|
|
adiw xh:xl, 1
|
|
lds r16, sk6812RGBW+1
|
|
rcall Eeprom_WriteByteIfChanged ; (R17)
|
|
adiw xh:xl, 1
|
|
lds r16, sk6812RGBW+2
|
|
rcall Eeprom_WriteByteIfChanged ; (R17)
|
|
adiw xh:xl, 1
|
|
lds r16, sk6812RGBW+3
|
|
rcall Eeprom_WriteByteIfChanged ; (R17)
|
|
out SREG, r15
|
|
pop r15
|
|
ret
|
|
; @end
|
|
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; @routine sk6812ReadConfFromEeprom
|
|
;
|
|
; @clobbers r16, r17, X
|
|
|
|
sk6812ReadConfFromEeprom:
|
|
push r15
|
|
in r15, SREG
|
|
cli
|
|
ldi xl, LOW(EEPROM_OFFS_SK6812_RGBW)
|
|
ldi xh, HIGH(EEPROM_OFFS_SK6812_RGBW)
|
|
rcall Eeprom_ReadByte
|
|
brcc sk6812ReadConfFromEeprom_default
|
|
mov r18, r16
|
|
adiw xh:xl, 1
|
|
|
|
rcall Eeprom_ReadByte
|
|
brcc sk6812ReadConfFromEeprom_default
|
|
mov r19, r16
|
|
adiw xh:xl, 1
|
|
|
|
rcall Eeprom_ReadByte
|
|
brcc sk6812ReadConfFromEeprom_default
|
|
mov r20, r16
|
|
adiw xh:xl, 1
|
|
|
|
rcall Eeprom_ReadByte
|
|
brcc sk6812ReadConfFromEeprom_default
|
|
mov r21, r16
|
|
|
|
mov r16, r18
|
|
and r16, r19
|
|
and r16, r20
|
|
and r16, r21
|
|
inc r16
|
|
brne sk6812ReadConfFromEeprom_storeColor
|
|
; fall through if value from EEPROM is 0xffffffff
|
|
sk6812ReadConfFromEeprom_default:
|
|
ldi r18, 128 ; R
|
|
ldi r19, 69 ; G
|
|
ldi r20, 0 ; B
|
|
ldi r21, 0 ; W
|
|
sk6812ReadConfFromEeprom_storeColor:
|
|
sts sk6812RGBW, r18
|
|
sts sk6812RGBW+1, r19
|
|
sts sk6812RGBW+2, r20
|
|
sts sk6812RGBW+3, r21
|
|
sk6812ReadConfFromEeprom_end:
|
|
out SREG, r15
|
|
pop r15
|
|
ret
|
|
; @end
|
|
|
|
|