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Jonathan Wyss
2024-02-27 12:42:35 +01:00
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52
light_ws2812_AVR/Examples/Chained_writes.c Normal file
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/*
* ATTENTION: This example uses the old v1.0 interface.
*
* Light_WS2812 library example - Chained Writes
*
* This example shows how to use multiple calls without issuing a reset
* in between, allowing to send the same buffer to the string
* multiple times. This technique can be useful to conserve memory
* or to calculate LED colors on-the-fly.
*
* Please make sure to set your configuration in "WS2812_config.h" first
*
*/
#include <util/delay.h>
#include <avr/io.h>
#include <avr/interrupt.h>
#include "light_ws2812.h"
struct cRGB led[2];
int main(void)
{
uint8_t pos=0;
uint8_t direction=1;
uint8_t i;
#ifdef __AVR_ATtiny10__
CCP=0xD8; // configuration change protection, write signature
CLKPSR=0; // set cpu clock prescaler =1 (8Mhz) (attiny 4/5/9/10)
#endif
led[0].r=16;led[0].g=00;led[0].b=00; // LED 0 is red
led[1].r=16;led[1].g=16;led[1].b=16; // LED 1 is White
while(1)
{
for (i=0; i<pos; i++)
ws2812_sendarray((uint8_t *)&led[0],3); // Repeatedly send "red" to the led string.
// No more than 1-2µs should pass between calls
// to avoid issuing a reset condition.
for (i=0; i<(16-pos); i++)
ws2812_sendarray((uint8_t *)&led[1],3); // white
_delay_ms(50); // Issue reset and wait for 50 ms.
pos+=direction;
if ((pos==16)||(pos==0)) direction=-direction;
}
}

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light_ws2812_AVR/Examples/RGBW_blinky.c Normal file
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/*
* Light_WS2812 library example - RGBW_blinky
*
* cycles one LED through red, green, blue, white
*
* This example does only work with the SK6812RGBW LEDs
*
* Please make sure to set your configuration in "WS2812_config.h" first
*
*/
#include <util/delay.h>
#include <avr/io.h>
#include <avr/interrupt.h>
#include "light_ws2812.h"
struct cRGBW led[1];
int main(void)
{
#ifdef __AVR_ATtiny10__
CCP=0xD8; // configuration change protection, write signature
CLKPSR=0; // set cpu clock prescaler =1 (8Mhz) (attiny 4/5/9/10)
#endif
while(1)
{
led[0].r=128;led[0].g=00;led[0].b=0;led[0].w=0; // Write red to array
ws2812_setleds_rgbw(led,1);
_delay_ms(500); // wait for 500ms.
led[0].r=0;led[0].g=128;led[0].b=0;led[0].w=0; // green
ws2812_setleds_rgbw(led,1);
_delay_ms(500);
led[0].r=0;led[0].g=0;led[0].b=128;led[0].w=0; // blue
ws2812_setleds_rgbw(led,1);
_delay_ms(500);
led[0].r=0;led[0].g=0;led[0].b=0;led[0].w=128; // white
ws2812_setleds_rgbw(led,1);
_delay_ms(500);
}
}

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light_ws2812_AVR/Examples/RGB_blinky.c Normal file
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/*
* Light_WS2812 library example - RGB_blinky
*
* cycles one LED through red, green, blue
*
* This example is configured for a ATtiny85 with PLL clock fuse set and
* the WS2812 string connected to PB4.
*/
#include <util/delay.h>
#include <avr/io.h>
#include <avr/interrupt.h>
#include "light_ws2812.h"
struct cRGB led[1];
int main(void)
{
#ifdef __AVR_ATtiny10__
CCP=0xD8; // configuration change protection, write signature
CLKPSR=0; // set cpu clock prescaler =1 (8Mhz) (attiny 4/5/9/10)
#endif
while(1)
{
led[0].r=255;led[0].g=00;led[0].b=0; // Write red to array
ws2812_setleds(led,1);
_delay_ms(500); // wait for 500ms.
led[0].r=0;led[0].g=255;led[0].b=0; // green
ws2812_setleds(led,1);
_delay_ms(500);
led[0].r=0;led[0].g=00;led[0].b=255; // blue
ws2812_setleds(led,1);
_delay_ms(500);
}
}

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light_ws2812_AVR/Examples/Rainbow.c Normal file
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/*
*
* This example is configured for a Atmega32 at 16MHz
*/
#include <util/delay.h>
#include <avr/io.h>
#include <avr/interrupt.h>
#include "light_ws2812.h"
#define MAXPIX 30
#define COLORLENGTH (MAXPIX/2)
#define FADE (256/COLORLENGTH)
struct cRGB colors[8];
struct cRGB led[MAXPIX];
int main(void)
{
uint8_t j = 1;
uint8_t k = 1;
DDRB|=_BV(ws2812_pin);
uint8_t i;
for(i=MAXPIX; i>0; i--)
{
led[i-1].r=0;led[i-1].g=0;led[i-1].b=0;
}
//Rainbowcolors
colors[0].r=150; colors[0].g=150; colors[0].b=150;
colors[1].r=255; colors[1].g=000; colors[1].b=000;//red
colors[2].r=255; colors[2].g=100; colors[2].b=000;//orange
colors[3].r=100; colors[3].g=255; colors[3].b=000;//yellow
colors[4].r=000; colors[4].g=255; colors[4].b=000;//green
colors[5].r=000; colors[5].g=100; colors[5].b=255;//light blue (türkis)
colors[6].r=000; colors[6].g=000; colors[6].b=255;//blue
colors[7].r=100; colors[7].g=000; colors[7].b=255;//violet
while(1)
{
//shift all vallues by one led
uint8_t i=0;
for(i=MAXPIX; i>1; i--)
led[i-1]=led[i-2];
//change colour when colourlength is reached
if(k>COLORLENGTH)
{
j++;
if(j>7)
{
j=0;
}
k=0;
}
k++;
//loop colouers
//fade red
if(led[0].r<(colors[j].r-FADE))
led[0].r+=FADE;
if(led[0].r>(colors[j].r+FADE))
led[0].r-=FADE;
if(led[0].g<(colors[j].g-FADE))
led[0].g+=FADE;
if(led[0].g>(colors[j].g+FADE))
led[0].g-=FADE;
if(led[0].b<(colors[j].b-FADE))
led[0].b+=FADE;
if(led[0].b>(colors[j].b+FADE))
led[0].b-=FADE;
_delay_ms(10);
ws2812_sendarray((uint8_t *)led,MAXPIX*3);
}
}

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light_ws2812_AVR/Light_WS2812/light_ws2812.c Normal file
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/*
* light weight WS2812 lib V2.5b
*
* Controls WS2811/WS2812/WS2812B RGB-LEDs
* Author: Tim (cpldcpu@gmail.com)
*
* Jan 18th, 2014 v2.0b Initial Version
* Nov 29th, 2015 v2.3 Added SK6812RGBW support
* Nov 11th, 2023 v2.5 Added support for ports that cannot be addressed with "out"
* Added LGT8F88A support
*
* License: GNU GPL v2+ (see License.txt)
*/
#include "light_ws2812.h"
#include <avr/interrupt.h>
#include <avr/io.h>
#include <util/delay.h>
// Normally ws2812_sendarray_mask() runs under disabled-interrupt condition,
// undefine if you want to accept interrupts in that function.
#define interrupt_is_disabled
// Setleds for standard RGB
void inline ws2812_setleds(struct cRGB *ledarray, uint16_t leds)
{
ws2812_setleds_pin(ledarray,leds, _BV(ws2812_pin));
}
void inline ws2812_setleds_pin(struct cRGB *ledarray, uint16_t leds, uint8_t pinmask)
{
ws2812_sendarray_mask((uint8_t*)ledarray,leds+leds+leds,pinmask);
_delay_us(ws2812_resettime);
}
// Setleds for SK6812RGBW
void inline ws2812_setleds_rgbw(struct cRGBW *ledarray, uint16_t leds)
{
ws2812_sendarray_mask((uint8_t*)ledarray,leds<<2,_BV(ws2812_pin));
_delay_us(ws2812_resettime);
}
void ws2812_sendarray(uint8_t *data,uint16_t datlen)
{
ws2812_sendarray_mask(data,datlen,_BV(ws2812_pin));
}
/*
This routine writes an array of bytes with RGB values to the Dataout pin
using the fast 800kHz clockless WS2811/2812 protocol.
*/
// Timing in ns
#define w_zeropulse 350
#define w_onepulse 900
#define w_totalperiod 1250
// Fixed cycles used by the inner loop
#if defined(__LGT8F__)
#define w_fixedlow 4
#define w_fixedhigh 6
#define w_fixedtotal 10
#else
#define w_fixedlow 3
#define w_fixedhigh 6
#define w_fixedtotal 10
#endif
// // Fixed cycles used by the inner loop
// #define w_fixedlow 2
// #define w_fixedhigh 4
// #define w_fixedtotal 8
// Insert NOPs to match the timing, if possible
#define w_zerocycles (((F_CPU/1000)*w_zeropulse )/1000000)
#define w_onecycles (((F_CPU/1000)*w_onepulse +500000)/1000000)
#define w_totalcycles (((F_CPU/1000)*w_totalperiod +500000)/1000000)
// w1 - nops between rising edge and falling edge - low
#define w1 (w_zerocycles-w_fixedlow)
// w2 nops between fe low and fe high
#define w2 (w_onecycles-w_fixedhigh-w1)
// w3 nops to complete loop
#define w3 (w_totalcycles-w_fixedtotal-w1-w2)
#if w1>0
#define w1_nops w1
#else
#define w1_nops 0
#endif
// The only critical timing parameter is the minimum pulse length of the "0"
// Warn or throw error if this timing can not be met with current F_CPU settings.
#define w_lowtime ((w1_nops+w_fixedlow)*1000000)/(F_CPU/1000)
#if w_lowtime>550
#error "Light_ws2812: Sorry, the clock speed is too low. Did you set F_CPU correctly?"
#elif w_lowtime>450
#warning "Light_ws2812: The timing is critical and may only work on WS2812B, not on WS2812(S)."
#warning "Please consider a higher clockspeed, if possible"
#endif
#if w2>0
#define w2_nops w2
#else
#define w2_nops 0
#endif
#if w3>0
#define w3_nops w3
#else
#define w3_nops 0
#endif
#define w_nop1 "nop \n\t"
#ifdef interrupt_is_disabled
#define w_nop2 "brid .+0 \n\t"
#else
#define w_nop2 "brtc .+0 \n\t"
#endif
#define w_nop4 w_nop2 w_nop2
#define w_nop8 w_nop4 w_nop4
#define w_nop16 w_nop8 w_nop8
void inline ws2812_sendarray_mask(uint8_t *data,uint16_t datlen,uint8_t maskhi)
{
uint8_t curbyte,ctr,masklo;
uint8_t sreg_prev;
uint8_t *port = (uint8_t*) _SFR_MEM_ADDR(ws2812_PORTREG);
ws2812_DDRREG |= maskhi; // Enable output
masklo =~maskhi&ws2812_PORTREG;
maskhi |= ws2812_PORTREG;
sreg_prev=SREG;
#ifdef interrupt_is_disabled
cli();
#endif
while (datlen--) {
curbyte=*data++;
asm volatile(
" ldi %0,8 \n\t"
#ifndef interrupt_is_disabled
" clt \n\t"
#endif
"loop%=: \n\t"
" st X,%3 \n\t" // '1' [02] '0' [02] - re
#if (w1_nops&1)
w_nop1
#endif
#if (w1_nops&2)
w_nop2
#endif
#if (w1_nops&4)
w_nop4
#endif
#if (w1_nops&8)
w_nop8
#endif
#if (w1_nops&16)
w_nop16
#endif
#if defined(__LGT8F__)
" bst %1,7 \n\t" // '1' [02] '0' [02]
" brts 1f \n\t" // '1' [04] '0' [03]
" st X,%4 \n\t" // '1' [--] '0' [04] - fe-low
"1: lsl %1 \n\t" // '1' [05] '0' [05]
#else
" sbrs %1,7 \n\t" // '1' [04] '0' [03]
" st X,%4 \n\t" // '1' [--] '0' [05] - fe-low
" lsl %1 \n\t" // '1' [05] '0' [06]
#endif
#if (w2_nops&1)
w_nop1
#endif
#if (w2_nops&2)
w_nop2
#endif
#if (w2_nops&4)
w_nop4
#endif
#if (w2_nops&8)
w_nop8
#endif
#if (w2_nops&16)
w_nop16
#endif
" brcc skipone%= \n\t" // '1' [+1] '0' [+2] -
" st X,%4 \n\t" // '1' [+3] '0' [--] - fe-high
"skipone%=: " // '1' [+3] '0' [+2] -
#if (w3_nops&1)
w_nop1
#endif
#if (w3_nops&2)
w_nop2
#endif
#if (w3_nops&4)
w_nop4
#endif
#if (w3_nops&8)
w_nop8
#endif
#if (w3_nops&16)
w_nop16
#endif
" dec %0 \n\t" // '1' [+4] '0' [+3]
" brne loop%=\n\t" // '1' [+5] '0' [+4]
: "=&d" (ctr)
: "r" (curbyte), "x" (port), "r" (maskhi), "r" (masklo)
);
}
SREG=sreg_prev;
}

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light_ws2812_AVR/Light_WS2812/light_ws2812.h Normal file
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/*
* light weight WS2812 lib include
*
* Version 2.3 - Nev 29th 2015
* Author: Tim (cpldcpu@gmail.com)
*
* Please do not change this file! All configuration is handled in "ws2812_config.h"
*
* License: GNU GPL v2+ (see License.txt)
+
*/
#ifndef LIGHT_WS2812_H_
#define LIGHT_WS2812_H_
#include "ws2812_config.h"
#include <avr/io.h>
#include <avr/interrupt.h>
///////////////////////////////////////////////////////////////////////
// Define Reset time in µs.
//
// This is the time the library spends waiting after writing the data.
//
// WS2813 needs 300 µs reset time
// WS2812 and clones only need 50 µs
//
///////////////////////////////////////////////////////////////////////
#if !defined(ws2812_resettime)
#define ws2812_resettime 300
#endif
///////////////////////////////////////////////////////////////////////
// Define I/O pin
///////////////////////////////////////////////////////////////////////
#if !defined(ws2812_port)
#define ws2812_port B // Data port
#endif
#if !defined(ws2812_pin)
#define ws2812_pin 0 // Data out pin
#endif
/*
* Structure of the LED array
*
* cRGB: RGB for WS2812S/B/C/D, SK6812, SK6812Mini, SK6812WWA, APA104, APA106
* cRGBW: RGBW for SK6812RGBW
*/
struct cRGB { uint8_t g; uint8_t r; uint8_t b; };
struct cRGBW { uint8_t g; uint8_t r; uint8_t b; uint8_t w;};
/* User Interface
*
* Input:
* ledarray: An array of GRB data describing the LED colors
* number_of_leds: The number of LEDs to write
* pinmask (optional): Bitmask describing the output bin. e.g. _BV(PB0)
*
* The functions will perform the following actions:
* - Set the data-out pin as output
* - Send out the LED data
* - Wait 50µs to reset the LEDs
*/
void ws2812_setleds (struct cRGB *ledarray, uint16_t number_of_leds);
void ws2812_setleds_pin (struct cRGB *ledarray, uint16_t number_of_leds,uint8_t pinmask);
void ws2812_setleds_rgbw(struct cRGBW *ledarray, uint16_t number_of_leds);
/*
* Old interface / Internal functions
*
* The functions take a byte-array and send to the data output as WS2812 bitstream.
* The length is the number of bytes to send - three per LED.
*/
void ws2812_sendarray (uint8_t *array,uint16_t length);
void ws2812_sendarray_mask(uint8_t *array,uint16_t length, uint8_t pinmask);
/*
* Internal defines
*/
#if !defined(CONCAT)
#define CONCAT(a, b) a ## b
#endif
#if !defined(CONCAT_EXP)
#define CONCAT_EXP(a, b) CONCAT(a, b)
#endif
#define ws2812_PORTREG CONCAT_EXP(PORT,ws2812_port)
#define ws2812_DDRREG CONCAT_EXP(DDR,ws2812_port)
#endif /* LIGHT_WS2812_H_ */

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light_ws2812_AVR/Light_WS2812/light_ws2812.o Normal file
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light_ws2812_AVR/Light_WS2812/ws2812_config.h Normal file
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/*
* light_ws2812_config.h
*
* v2.4 - Nov 27, 2016
*
* User Configuration file for the light_ws2812_lib
*
*/
#ifndef WS2812_CONFIG_H_
#define WS2812_CONFIG_H_
///////////////////////////////////////////////////////////////////////
// Define Reset time in µs.
//
// This is the time the library spends waiting after writing the data.
//
// WS2813 needs 300 µs reset time
// WS2812 and clones only need 50 µs
//
///////////////////////////////////////////////////////////////////////
#define ws2812_resettime 300
///////////////////////////////////////////////////////////////////////
// Define I/O pin
///////////////////////////////////////////////////////////////////////
#define ws2812_port B // Data port
#define ws2812_pin 4 // Data out pin
#endif /* WS2812_CONFIG_H_ */

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light_ws2812_AVR/Makefile Normal file
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# Makefile to build light_ws2812 library examples
# This is not a very good example of a makefile - the dependencies do not work, therefore everything is rebuilt every time.
# Change these parameters for your device
F_CPU = 16000000
# DEVICE = attiny85
DEVICE = atmega168p
#
# Tools:
CC = avr-gcc
LIB = light_ws2812
EXAMPLES = RGB_blinky RGBW_blinky Chained_writes Rainbow
DEP = ws2812_config.h Light_WS2812/light_ws2812.h
CFLAGS = -g2 -I. -ILight_WS2812 -mmcu=$(DEVICE) -DF_CPU=$(F_CPU)
CFLAGS+= -Os -ffunction-sections -fdata-sections -fpack-struct -fno-move-loop-invariants -fno-tree-scev-cprop -fno-inline-small-functions
CFLAGS+= -Wall -Wno-pointer-to-int-cast
#CFLAGS+= -Wa,-ahls=$<.lst
LDFLAGS = -Wl,--relax,--section-start=.text=0,-Map=main.map
all: $(EXAMPLES)
$(LIB): $(DEP)
@echo Building Library
@$(CC) $(CFLAGS) -o Objects/$@.o -c Light_WS2812/$@.c
$(EXAMPLES): $(LIB)
@echo Building $@
@$(CC) $(CFLAGS) -o Objects/$@.o Examples/$@.c Light_WS2812/$^.c
@avr-size Objects/$@.o
@avr-objcopy -j .text -j .data -O ihex Objects/$@.o $@.hex
@avr-objdump -d -S Objects/$@.o >Objects/$@.lss
.PHONY: clean
clean:
rm -f *.hex Objects/*.o Objects/*.lss

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light_ws2812_AVR/Objects/obj files go here.txt Normal file
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empty