Hello again,
We are trying to read 320kb txt file to a Micro SD card using an Teensy 3.6. I divided my file into 512 byte buffers in C# and every 65 milliseconds write it to SerialPort. But in Teensy same code goes infinity loop while starting serial (while(!Serial){}).When we replace Serial with Serial1 problem has solved but we could not write buffers to SD card now. Here is the code:
Thank you.
We are trying to read 320kb txt file to a Micro SD card using an Teensy 3.6. I divided my file into 512 byte buffers in C# and every 65 milliseconds write it to SerialPort. But in Teensy same code goes infinity loop while starting serial (while(!Serial){}).When we replace Serial with Serial1 problem has solved but we could not write buffers to SD card now. Here is the code:
Code:
#include <SD.h>
#include <SPI.h>
char gelen[512];
File myFile;
// change this to match your SD shield or module;
// Arduino Ethernet shield: pin 4
// Adafruit SD shields and modules: pin 10
// Sparkfun SD shield: pin 8
// Teensy audio board: pin 10
// Teensy 3.5 & 3.6 & 4.1 on-board: BUILTIN_SDCARD
// Wiz820+SD board: pin 4
// Teensy 2.0: pin 0
// Teensy++ 2.0: pin 20
const int chipSelect = BUILTIN_SDCARD;
const int ledPin = 13;
void setup()
{
pinMode(ledPin, OUTPUT);
//UNCOMMENT THESE TWO LINES FOR TEENSY AUDIO BOARD:
//SPI.setMOSI(7); // Audio shield has MOSI on pin 7
//SPI.setSCK(14); // Audio shield has SCK on pin 14
// Open serial communications and wait for port to open:
Serial.begin(115200);
while (!Serial) {
digitalWrite(ledPin, HIGH);
; // wait for serial port to connect.
}
while (!SD.begin(chipSelect)) {
}
// open the file.
myFile = SD.open("test.txt", FILE_WRITE );
}
void loop(){
if(Serial.available()>0)
{
Serial.readBytes(gelen,512);
myFile.println(gelen);
}
else
{
myFile.flush();
}
}Thank you.