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58 lines
1.5 KiB
C++
58 lines
1.5 KiB
C++
// An example of the SdFatSoftSpi template class.
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// This example is for an Adafruit Data Logging Shield on a Mega.
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// Software SPI is required on Mega since this shield connects to pins 10-13.
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// This example will also run on an Uno and other boards using software SPI.
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//
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#include <SPI.h>
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#include "SdFat.h"
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#if ENABLE_SOFTWARE_SPI_CLASS // Must be set in SdFat/SdFatConfig.h
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//
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// Pin numbers in templates must be constants.
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const uint8_t SOFT_MISO_PIN = 12;
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const uint8_t SOFT_MOSI_PIN = 11;
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const uint8_t SOFT_SCK_PIN = 13;
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//
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// Chip select may be constant or RAM variable.
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const uint8_t SD_CHIP_SELECT_PIN = 10;
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// SdFat software SPI template
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SdFatSoftSpi<SOFT_MISO_PIN, SOFT_MOSI_PIN, SOFT_SCK_PIN> sd;
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// Test file.
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SdFile file;
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void setup() {
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Serial.begin(9600);
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// Wait for USB Serial
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while (!Serial) {
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SysCall::yield();
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}
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Serial.println("Type any character to start");
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while (!Serial.available()) {
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SysCall::yield();
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}
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if (!sd.begin(SD_CHIP_SELECT_PIN)) {
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sd.initErrorHalt();
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}
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if (!file.open("SoftSPI.txt", O_CREAT | O_RDWR)) {
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sd.errorHalt(F("open failed"));
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}
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file.println(F("This line was printed using software SPI."));
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file.rewind();
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while (file.available()) {
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Serial.write(file.read());
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}
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file.close();
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Serial.println(F("Done."));
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}
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//------------------------------------------------------------------------------
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void loop() {}
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#else // ENABLE_SOFTWARE_SPI_CLASS
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#error ENABLE_SOFTWARE_SPI_CLASS must be set non-zero in SdFat/SdFatConfig.h
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#endif //ENABLE_SOFTWARE_SPI_CLASS
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