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#include <SPI.h>
// Definition des Datenpaketes
// Länge: 1 Byte
// Adressierung der LED: 5 Bit
// Maske: 0xF8
// Helligkeitswert: 3 Bit
// Maske: 0x7
// Dadurch 31 LEDs adressierbar mit 7 Helligkeitswerten
//
// * CS - to digital pin 10 (SS pin)
// * SDI - to digital pin 11 (MOSI pin)
// * SDI - to digital pin 12 (MISO pin)
// * CLK - to digital pin 13 (SCK pin)
// Vorbereitungen um als Slave Daten zu empfangen
byte recieve_buff [255];
volatile byte pos;
volatile boolean process_it;
// PINS fuer SPI
const int slaveSelectPin = 10;
const int miso = 12;
const int mosi = 11;
const int ledPin = 2;
//Array fuer Helligkeitswerte Led, 2te Dimension gibt Position im Muster wieder
byte brightnessMatrix[31][2];
//Array fuer Led Pin Adressen
byte ledAdresse[31];
//Fuer For Schleifen im Loop
int brightLimit = 100;
int posLed = 3;
// Matrix fuer Helligkeitsmuster
int bitMusterHelligkeit[][100] =
{
{
0,0,0,0,0,0,0,0,2 }
,
{
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,2 }
,
{
0,0,0,0,0,0,1,0,0,0,0,0,0,1,2 }
,
{
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,2 }
,
{
0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,2 }
,
{
0,1,1,1,0,1,1,1,2 }
,
{
0,1,1,1,0,1,1,1,2 }
,
{
1,1,1,1,1,1,1,1,2 }
};
void setup() {
Serial.begin (115200); // debugging
pinMode(slaveSelectPin, INPUT);
pinMode(miso, OUTPUT);
// SPI als Slave aktivieren
SPCR |= _BV(SPE);
// interrupt vorbereitung
pos =0; //recieve Buffer leer
process_it = false;
SPI.attachInterrupt();
//Leds initialisieren
for(int i=0;i<31;i++){
brightnessMatrix[i][1]=0;
}
// initialize the digital pin as an output.
pinMode(ledPin, OUTPUT);
digitalWrite (ledPin, HIGH);
delay(1000);
digitalWrite (ledPin, LOW);
}
//Interrupt fuer SPI
ISR (SPI_STC_vect)
{
byte buffer = SPDR;
//Schreibt im Array an die Adresse im Datenpaket den Wert
Serial.println((SPDR&0xf8)>>3);
//Serial.println(SPDR);
//brightnessMatrix[2][0]=SPDR&0x07;
brightnessMatrix[SPDR&0x07][0]=(SPDR&0xf8)>>3;
digitalWrite (ledPin, HIGH);
digitalWrite (ledPin, LOW);
}
void loop()
{
//Serial.println(brightnessMatrix[2][0]);
for(int i=0;i<31;i++){
//Serial.println(bitMusterHelligkeit[brightnessMatrix[i][0]][brightnessMatrix[i][1]]);
//Serial.println(
if(bitMusterHelligkeit[brightnessMatrix[i][0]][brightnessMatrix[i][1]]==1){
digitalWrite(i,HIGH);
brightnessMatrix[i][1]==brightnessMatrix[i][1]++;
}
else if(bitMusterHelligkeit[brightnessMatrix[i][0]][brightnessMatrix[i][1]]==0){
digitalWrite(i,LOW);
brightnessMatrix[i][1]==brightnessMatrix[i][1]++;
}
else {
brightnessMatrix[i][1]=0;
}
}
}
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