I've used both breakout boards individually with the ItsyBitsy without any problems, but when I try to use them together, the SD card won't be recognized.
The setup with just the SD Card reader is below:
This works just fine, the SD Card is recognized, but of course, there's no flash memory to transfer to.
The setup with both the SD Card reader and the SPIFlash Memory is below:
This fails miserably, the SD Card is not recognized.
The wiring is the same in both setups, the only difference is that the SPIFlash board is not plugged in in the first set-up.
The test code is based on the ReadWrite sample program:
Code: Select all
/*
SD card read/write
This example shows how to read and write data to and from an SD card file
The circuit:
* SD card attached to SPI bus as follows:
** MOSI - pin 11
** MISO - pin 12
** CLK - pin 13
created Nov 2010
by David A. Mellis
modified 9 Apr 2012
by Tom Igoe
This example code is in the public domain.
*/
#include <SPI.h>
#include "SdFat.h"
SdFat32 SD;
#define SD_CS_PIN 9
File myFile;
void setup()
{
// Open serial communications and wait for port to open:
pinMode(2,OUTPUT);
digitalWrite(2,HIGH);
pinMode(9,OUTPUT);
digitalWrite(9,HIGH);
Serial.begin(9600);
while (!Serial) {
; // wait for serial port to connect. Needed for native USB port only
}
Serial.print("Initializing SD card...");
if (!SD.begin(SD_CS_PIN)) {
Serial.println("initialization failed!");
return;
}
Serial.println("initialization done.");
// open the file. note that only one file can be open at a time,
// so you have to close this one before opening another.
myFile = SD.open("test.txt", FILE_WRITE);
// if the file opened okay, write to it:
if (myFile) {
Serial.print("Writing to test.txt...");
myFile.println("Testing....testing....");
// close the file:
myFile.close();
Serial.println("done.");
} else {
// if the file didn't open, print an error:
Serial.println("error opening test.txt");
}
// re-open the file for reading:
myFile = SD.open("test.txt");
if (myFile) {
Serial.println("test.txt:");
// read from the file until there's nothing else in it:
while (myFile.available()) {
Serial.write(myFile.read());
}
// close the file:
myFile.close();
} else {
// if the file didn't open, print an error:
Serial.println("error opening test.txt");
}
SD.remove("test.txt");
}
void loop()
{
// nothing happens after setup
}
All three boards are from Adafruit. I could sure use some help getting these to work together.