80 lines
1.9 KiB
C++
80 lines
1.9 KiB
C++
/*
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* ws2801.cpp
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*
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* Created: 26-12-16 21:57:10
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* Author: Adrien
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*/
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#define F_CPU 16000000UL
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#include <avr/io.h>
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#include <util/delay.h>
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#include <stdlib.h>
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#include "ws2801.h"
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/*
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L'espace mémoir à envoyer au ci est constituer comme ça :
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ciN |-----------0-----------||-----------1-----------||...||-----------N-----------| Ci numéro
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coulB |R7...R0|G7...G0|B7...B0||R7...R0|G7...G0|B7...B0||...||R7...R0|G7...G0|B7...B0| Valeur Couleurs bit n
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coul |--RED--|-GREEN-|--BLUE-||--RED--|-GREEN-|--BLUE-||...||--RED--|-GREEN-|--BLUE-| Valeur Couleurs
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bitN |7.....0|7.....0|7.....0||7.....0|7.....0|7.....0||...||7.....0|7.....0|7.....0| Bit n
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t[] |---0---|---1---|---2---||---3---|---4---|---5---||...||-3*N+0-|-3*N+1-|-3*N+3-| Emplacement dans le tableau
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Pour l'envois, il faut commencer par le bit 7 !
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*/
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main()
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{
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return 0;
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}
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ws2801::ws2801(uint8_t pin_clk, uint8_t pin_data, uint8_t *port, uint8_t nbr_ci)
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{
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this->pin_clk = pin_clk;
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this->pin_data = pin_data;
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this->port = port;
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this->nbr_ci = nbr_ci;
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PORTB;
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data = (uint8_t*)calloc(3*nbr_ci, 1);
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ddr = port-1;
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*ddr |= (1<<pin_clk)|(1<<pin_data);
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}
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void ws2801::conf(uint8_t pin_clk, uint8_t pin_data, uint8_t *port, uint8_t nbr_ci)
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{
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this->pin_clk = pin_clk;
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this->pin_data = pin_data;
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this->port = port;
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this->nbr_ci = nbr_ci;
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data = (uint8_t*)realloc(data,3*nbr_ci);
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ddr = port-1;
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*ddr |= (1<<pin_clk)|(1<<pin_data);
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}
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void ws2801::toSend(uint8_t LEDn, uint8_t val, Color couleur)
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{
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*(data+32*LEDn+couleur) = val;
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}
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void ws2801::toSend(uint8_t LEDn, uint8_t val)
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{
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*(data+LEDn) = val;
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}
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void ws2801::send()
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{
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sendRaw(data, 3*nbr_ci);
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}
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void ws2801::sendRaw(uint8_t *data,uint8_t size)
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{
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int i,j,m;
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for(i=0;i<size;i++)
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{
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for(j=0,m=0x80;j<8;j++)
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{
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*port &= ~(_BV(pin_clk));
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if(!i&&!j)
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_delay_us(500);
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*port = (*port&(~(_BV(pin_data))))|((data[i]&m)?_BV(pin_data):0);
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if(m==0x01)
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m=0x80;
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else
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m>>=1;
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}
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}
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}
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