/*
the following is modified from SD card file dump
This sketch shows how to read some data from a file in the SD card using the
SD library and update an array of ledMat.
The circuit:
SD card attached to SPI bus as follows:
** MOSI - pin 11
** MISO - pin 12
** CLK - pin 13
** CS - pin 4 (for MKRZero SD: SDCARD_SS_PIN)
created 22 December 2010
by Limor Fried
modified 9 Apr 2012
by Tom Igoe
modified 3 Mar 2022
by Jeszki
*/
#include <SPI.h>
#include <SD.h>
#include <FastLED.h>
#define DATA_PIN 6
#define LED_TYPE NEOPIXEL
#define COLOR_ORDER GRB
#define NUM_LEDS 128
CRGB ledMat[NUM_LEDS];
const int chipSelect = 4;
void setup() {
// Open serial communications and wait for port to open:
FastLED.addLeds<WS2812, DATA_PIN, COLOR_ORDER>(ledMat, NUM_LEDS);
Serial.begin(9600);
while (!Serial) {
; // wait for serial port to connect. Needed for native USB port only
}
Serial.print("Initializing SD card...");
// see if the card is present and can be initialized:
if (!SD.begin(chipSelect)) {
Serial.println("Card failed, or not present");
// don't do anything more:
while (1);
}
Serial.println("card initialized.");
// open the file. note that only one file can be open at a time,
// so you have to close this one before opening another.
File dataFile = SD.open("test.bin"); //just a text file
// if the file is available, write to it:
if (dataFile) {
int x = 0;
while (dataFile.available()) {
char x1 = dataFile.read();
char x2 = dataFile.read();
char x3 = dataFile.read();
Serial.print(x1,HEX);
Serial.print(x2,HEX);
Serial.print(x3,HEX);
if (((x+1)%16)==0) { Serial.println();} // print 16 char on 1 line
ledMat[x++]= CRGB(x1,x2,x3);
}
dataFile.close();
}
// if the file isn't open, pop up an error:
else {
Serial.println("error opening datalog.txt");
}
FastLED.show();
delay(100);
}
void loop() {
}
