arduino stuffs
Diffstat (limited to 'libraries/SD/examples/DumpFile/DumpFile.ino')
| -rw-r--r-- | libraries/SD/examples/DumpFile/DumpFile.ino | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/libraries/SD/examples/DumpFile/DumpFile.ino b/libraries/SD/examples/DumpFile/DumpFile.ino new file mode 100644 index 0000000..7491999 --- /dev/null +++ b/libraries/SD/examples/DumpFile/DumpFile.ino @@ -0,0 +1,65 @@ +/* + SD card file dump + + This example shows how to read a file from the SD card using the + SD library and send it over the serial port. + + 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 + + This example code is in the public domain. + +*/ + +#include <SPI.h> +#include <SD.h> + +const int chipSelect = 4; + +void setup() { + // Open serial communications and wait for port to open: + 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("datalog.txt"); + + // if the file is available, write to it: + if (dataFile) { + while (dataFile.available()) { + Serial.write(dataFile.read()); + } + dataFile.close(); + } + // if the file isn't open, pop up an error: + else { + Serial.println("error opening datalog.txt"); + } +} + +void loop() { +} + |