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04fe8e8b58
This includes empty stubs for most core Arduino functions. Need to actually implement all those digital reads writes whatever. Need to prebuild toolchains (xtensa-elf-lx106) for 3 platforms and put them on some download server. Need to do the same with esptool. Need to fix 0x40000 binary generation and add correct upload commands. Maybe even implement uploads over WiFi.
86 lines
1.8 KiB
C++
86 lines
1.8 KiB
C++
/*
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SD card basic file example
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This example shows how to create and destroy an SD card file
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The circuit:
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* SD card attached to SPI bus as follows:
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** MOSI - pin 11
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** MISO - pin 12
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** CLK - pin 13
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** CS - pin 4
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created Nov 2010
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by David A. Mellis
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modified 9 Apr 2012
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by Tom Igoe
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This example code is in the public domain.
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*/
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#include <SPI.h>
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#include <SD.h>
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File myFile;
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void setup()
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{
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// Open serial communications and wait for port to open:
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Serial.begin(9600);
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while (!Serial) {
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; // wait for serial port to connect. Needed for Leonardo only
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}
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Serial.print("Initializing SD card...");
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// On the Ethernet Shield, CS is pin 4. It's set as an output by default.
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// Note that even if it's not used as the CS pin, the hardware SS pin
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// (10 on most Arduino boards, 53 on the Mega) must be left as an output
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// or the SD library functions will not work.
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pinMode(10, OUTPUT);
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if (!SD.begin(4)) {
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Serial.println("initialization failed!");
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return;
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}
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Serial.println("initialization done.");
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if (SD.exists("example.txt")) {
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Serial.println("example.txt exists.");
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}
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else {
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Serial.println("example.txt doesn't exist.");
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}
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// open a new file and immediately close it:
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Serial.println("Creating example.txt...");
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myFile = SD.open("example.txt", FILE_WRITE);
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myFile.close();
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// Check to see if the file exists:
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if (SD.exists("example.txt")) {
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Serial.println("example.txt exists.");
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}
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else {
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Serial.println("example.txt doesn't exist.");
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}
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// delete the file:
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Serial.println("Removing example.txt...");
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SD.remove("example.txt");
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if (SD.exists("example.txt")) {
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Serial.println("example.txt exists.");
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}
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else {
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Serial.println("example.txt doesn't exist.");
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}
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}
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void loop()
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{
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// nothing happens after setup finishes.
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}
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