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bug fixes to SD library examples

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This commit is contained in:
Tom Igoe
2010-12-03 15:29:56 -05:00
parent 86e3d4ad7a
commit 4d3b263738
3 changed files with 18 additions and 15 deletions
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2
libraries/SD/examples/Datalogger/Datalogger.pde
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@ -34,7 +34,7 @@ void setup()
Serial.print("Initializing SD card..."); Serial.print("Initializing SD card...");
// make sure that the default chip select pin is set to // make sure that the default chip select pin is set to
// output, even if you don't use it: // output, even if you don't use it:
// pinMode(10, OUTPUT); pinMode(10, OUTPUT);
// see if the card is present and can be initialized: // see if the card is present and can be initialized:
if (!SD.begin(chipSelect)) { if (!SD.begin(chipSelect)) {

20
libraries/SD/examples/Files/Files.pde
View File

@ -29,6 +29,7 @@ void setup()
// Note that even if it's not used as the CS pin, the hardware SS pin // Note that even if it's not used as the CS pin, the hardware SS pin
// (10 on most Arduino boards, 53 on the Mega) must be left as an output // (10 on most Arduino boards, 53 on the Mega) must be left as an output
// or the SD library functions will not work. // or the SD library functions will not work.
pinMode(10, OUTPUT);
if (!SD.begin(4)) { if (!SD.begin(4)) {
Serial.println("initialization failed!"); Serial.println("initialization failed!");
@ -37,23 +38,23 @@ void setup()
Serial.println("initialization done."); Serial.println("initialization done.");
if (SD.exists("example.txt")) { if (SD.exists("example.txt")) {
Serial.println("example.txt exists."); Serial.println("example.txt exists.");
} }
else { else {
Serial.println("example.txt doesn't exist."); Serial.println("example.txt doesn't exist.");
} }
// open a new file and immediately close it: // open a new file and immediately close it:
Serial.println("Creating example.txt..."); Serial.println("Creating example.txt...");
myFile = SD.open("example.txt", FILE_TRUNCATE); myFile = SD.open("example.txt", FILE_TRUNCATE);
myFile.close(); myFile.close();
// Check to see if the file exists: // Check to see if the file exists:
if (SD.exists("example.txt")) { if (SD.exists("example.txt")) {
Serial.println("example.txt exists."); Serial.println("example.txt exists.");
} }
else { else {
Serial.println("example.txt doesn't exist."); Serial.println("example.txt doesn't exist.");
} }
// delete the file: // delete the file:
@ -61,16 +62,17 @@ void setup()
SD.remove("example.txt"); SD.remove("example.txt");
if (SD.exists("example.txt")){ if (SD.exists("example.txt")){
Serial.println("example.txt exists."); Serial.println("example.txt exists.");
} }
else { else {
Serial.println("example.txt doesn't exist."); Serial.println("example.txt doesn't exist.");
} }
} }
void loop() void loop()
{ {
// nothing happens after setup finishes. // nothing happens after setup finishes.
} }

1
libraries/SD/examples/ReadWrite/ReadWrite.pde
View File

@ -30,6 +30,7 @@ void setup()
// Note that even if it's not used as the CS pin, the hardware SS pin // Note that even if it's not used as the CS pin, the hardware SS pin
// (10 on most Arduino boards, 53 on the Mega) must be left as an output // (10 on most Arduino boards, 53 on the Mega) must be left as an output
// or the SD library functions will not work. // or the SD library functions will not work.
pinMode(10, OUTPUT);
if (!SD.begin(4)) { if (!SD.begin(4)) {
Serial.println("initialization failed!"); Serial.println("initialization failed!");