ada3c1ea8c
GPS tracked SDS011 sensor, transmitting data via Lora through TTN to opensensemap.org based on Arduino Mega
44 lines
No EOL
1.1 KiB
C++
44 lines
No EOL
1.1 KiB
C++
// Simple demo of the Stream parsInt() member function.
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#include <SPI.h>
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// The next two lines replace #include <SD.h>.
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#include "SdFat.h"
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SdFat SD;
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// SD card chip select pin - Modify the value of csPin for your SD module.
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const uint8_t csPin = SS;
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File file;
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//------------------------------------------------------------------------------
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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(F("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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// Initialize the SD.
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if (!SD.begin(csPin)) {
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Serial.println(F("begin error"));
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return;
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}
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// Create and open the file. Use flag to truncate an existing file.
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file = SD.open("stream.txt", O_RDWR|O_CREAT|O_TRUNC);
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if (!file) {
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Serial.println(F("open error"));
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return;
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}
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// Write a test number to the file.
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file.println("12345");
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// Rewind the file and read the number with parseInt().
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file.seek(0);
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int i = file.parseInt();
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Serial.print(F("parseInt: "));
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Serial.println(i);
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file.close();
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}
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void loop() {} |