8000 Updated listfiles example and added CardInfo example (#1914) · LinusHeu/arduino-pico@24f6302 · GitHub
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Updated listfiles example and added CardInfo example (earlephilhower#1914)
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‎libraries/SD/examples/CardInfo/CardInfo.ino

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/*
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SD card test
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This example shows how use the utility libraries on which the'
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SD library is based in order to get info about your SD card.
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Very useful for testing a card when you're not sure whether its working or not.
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The circuit:
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SD card attached to SPI bus as follows on RP2040:
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************ SPI0 ************
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** MISO (AKA RX) - pin 0, 4, or 16
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** MOSI (AKA TX) - pin 3, 7, or 19
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** CS - pin 1, 5, or 17
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** SCK - pin 2, 6, or 18
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************ SPI1 ************
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** MISO (AKA RX) - pin 8 or 12
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** MOSI (AKA TX) - pin 11 or 15
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** CS - pin 9 or 13
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** SCK - pin 10 or 14
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created 28 Mar 2011
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by Limor Fried
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modified 9 Apr 2012
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by Tom Igoe
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modified 26 Dec 2023
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by Richard Teel from code provided by Renzo Mischianti
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SOURCE: https://mischianti.org/raspberry-pi-pico-and-rp2040-boards-how-to-use-sd-card-5/
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*/
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// This are GP pins for SPI0 on the Raspberry Pi Pico board, and connect
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// to different *board* level pinouts. Check the PCB while wiring.
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// Only certain pins can be used by the SPI hardware, so if you change
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// these be sure they are legal or the program will crash.
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// See: https://datasheets.raspberrypi.com/picow/PicoW-A4-Pinout.pdf
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const int _MISO = 4; // AKA SPI RX
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const int _MOSI = 7; // AKA SPI TX
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const int _CS = 5;
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const int _SCK = 6;
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// include the SD library:
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#include <SPI.h>
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#include <SD.h>
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File root;
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void setup() {
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// Open serial communications and wait for port to open:
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Serial.begin(115200);
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while (!Serial) {
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delay(1); // wait for serial port to connect. Needed for native USB port only
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}
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Serial.println("\nInitializing SD card...");
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bool sdInitialized = false;
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// Ensure the SPI pinout the SD card is connected to is configured properly
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// Select the correct SPI based on _MISO pin for the RP2040
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if (_MISO == 0 || _MISO == 4 || _MISO == 16) {
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SPI.setRX(_MISO);
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SPI.setTX(_MOSI);
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SPI.setSCK(_SCK);
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sdInitialized = SD.begin(_CS);
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} else if (_MISO == 8 || _MISO == 12) {
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SPI1.setRX(_MISO);
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SPI1.setTX(_MOSI);
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SPI1.setSCK(_SCK);
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sdInitialized = SD.begin(_CS, SPI1);
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} else {
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Serial.println(F("ERROR: Unknown SPI Configuration"));
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return;
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}
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if (!sdInitialized) {
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Serial.println("initialization failed. Things to check:");
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Serial.println("* is a card inserted?");
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Serial.println("* is your wiring correct?");
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Serial.println("* did you change the chipSelect pin to match your shield or module?");
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return;
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} else {
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Serial.println("Wiring is correct and a card is present.");
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}
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// 0 - SD V1, 1 - SD V2, or 3 - SDHC/SDXC
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// print the type of card
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Serial.println();
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Serial.print("Card type: ");
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switch (SD.type()) {
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case 0:
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Serial.println("SD1");
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break;
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case 1:
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Serial.println("SD2");
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break;
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case 3:
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Serial.println("SDHC/SDXC");
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break;
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default:
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Serial.println("Unknown");
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}
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Serial.print("Cluster size: ");
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Serial.println(SD.clusterSize());
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Serial.print("Blocks x Cluster: ");
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Serial.println(SD.blocksPerCluster());
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Serial.print("Blocks size: ");
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Serial.println(SD.blockSize());
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Serial.print("Total Blocks: ");
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Serial.println(SD.totalBlocks());
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Serial.println();
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Serial.print("Total Cluster: ");
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Serial.println(SD.totalClusters());
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Serial.println();
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// print the type and size of the first FAT-type volume
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uint32_t volumesize;
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Serial.print("Volume type is: FAT");
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Serial.println(SD.fatType(), DEC);
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volumesize = SD.totalClusters();
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volumesize *= SD.clusterSize();
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volumesize /= 1000;
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Serial.print("Volume size (Kb): ");
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Serial.println(volumesize);
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Serial.print("Volume size (Mb): ");
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volumesize /= 1024;
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Serial.println(volumesize);
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Serial.print("Volume size (Gb): ");
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Serial.println((float)volumesize / 1024.0);
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Serial.print("Card size: ");
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Serial.println((float)SD.size() / 1000);
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FSInfo fs_info;
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SDFS.info(fs_info);
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Serial.print("Total bytes: ");
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Serial.println(fs_info.totalBytes);
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Serial.print("Used bytes: ");
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Serial.println(fs_info.usedBytes);
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root = SD.open("/");
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printDirectory(root, 0);
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}
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void loop(void) {
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// nothing happens after setup finishes.
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}
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void printDirectory(File dir, int numTabs) {
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while (true) {
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File entry = dir.openNextFile();
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if (!entry) {
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// no more files
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break;
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}
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for (uint8_t i = 0; i < numTabs; i++) {
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Serial.print('\t');
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}
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Serial.print(entry.name());
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if (entry.isDirectory()) {
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Serial.println("/");
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printDirectory(entry, numTabs + 1);
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} else {
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// files have sizes, directories do not
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Serial.print("\t\t");
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Serial.print(entry.size(), DEC);
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time_t cr = entry.getCreationTime();
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time_t lw = entry.getLastWrite();
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struct tm* tmstruct = localtime(&cr);
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Serial.printf("\tCREATION: %d-%02d-%02d %02d:%02d:%02d", (tmstruct->tm_year) + 1900, (tmstruct->tm_mon) + 1, tmstruct->tm_mday, tmstruct->tm_hour, tmstruct->tm_min, tmstruct->tm_sec);
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tmstruct = localtime(&lw);
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Serial.printf("\tLAST WRITE: %d-%02d-%02d %02d:%02d:%02d\n", (tmstruct->tm_year) + 1900, (tmstruct->tm_mon) + 1, tmstruct->tm_mday, tmstruct->tm_hour, tmstruct->tm_min, tmstruct->tm_sec);
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}
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entry.close();
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}
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}

‎libraries/SD/examples/listfiles/listfiles.ino

Lines changed: 42 additions & 15 deletions
Original file line numberDiff line numberDiff line change
@@ -5,18 +5,28 @@
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directory on a SD card
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The circuit:
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SD card attached to SPI bus as follows:
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** MISO - pin 4
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** MOSI - pin 7
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** CS - pin 5
12-
** SCK - pin 6
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SD card attached to SPI bus as follows on RP2040:
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************ SPI0 ************
10+
** MISO (AKA RX) - pin 0, 4, or 16
11+
** MOSI (AKA TX) - pin 3, 7, or 19
12+
** CS - pin 1, 5, or 17
13+
** SCK - pin 2, 6, or 18
14+
************ SPI1 ************
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** MISO (AKA RX) - pin 8 or 12
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** MOSI (AKA TX) - pin 11 or 15
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** CS - pin 9 or 13
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** SCK - pin 10 or 14
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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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modified 2 Feb 2014
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by Scott Fitzgerald
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modified 12 Feb 2023
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by Earle F. Philhower, III
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modified 26 Dec 2023
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by Richard Teel
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This example code is in the public domain.
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@@ -27,8 +37,8 @@
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// Only certain pins can be used by the SPI hardware, so if you change
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// these be sure they are legal or the program will crash.
2939
// See: https://datasheets.raspberrypi.com/picow/PicoW-A4-Pinout.pdf
30-
const int _MISO = 4;
31-
const int _MOSI = 7;
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const int _MISO = 4; // AKA SPI RX
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const int _MOSI = 7; // AKA SPI TX
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const int _CS = 5;
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const int _SCK = 6;
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@@ -41,14 +51,31 @@ void setup() {
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// Open serial communications and wait for port to open:
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Serial.begin(115200);
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44-
Serial.print("Initializing SD card...");
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while (!Serial) {
55+
delay(1); // wait for serial port to connect. Needed for native USB port only
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}
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58+
Serial.println("\nInitializing SD card...");
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60+
bool sdInitialized = false;
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// Ensure the SPI pinout the SD card is connected to is configured properly
47-
SPI.setRX(_MISO);
48-
SPI.setTX(_MOSI);
49-
SPI.setSCK(_SCK);
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// Select the correct SPI based on _MISO pin for the RP2040
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if (_MISO == 0 || _MISO == 4 || _MISO == 16) {
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SPI.setRX(_MISO);
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SPI.setTX(_MOSI);
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SPI.setSCK(_SCK);
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sdInitialized = SD.begin(_CS);
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} else if (_MISO == 8 || _MISO == 12) {
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SPI1.setRX(_MISO);
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SPI1.setTX(_MOSI);
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SPI1.setSCK(_SCK);
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sdInitialized = SD.begin(_CS, SPI1);
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} else {
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Serial.println(F("ERROR: Unknown SPI Configuration"));
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return;
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}
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51-
if (!SD.begin(_CS)) {
78+
if (!sdInitialized) {
5279
Serial.println("initialization failed!");
5380
return;
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}
@@ -68,8 +95,8 @@ void loop() {
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void printDirectory(File dir, int numTabs) {
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while (true) {
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71-
File entry = dir.openNextFile();
72-
if (! entry) {
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File entry = dir.openNextFile();
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if (!entry) {
73100
// no more files
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break;
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}
@@ -86,7 +113,7 @@ void printDirectory(File dir, int numTabs) {
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Serial.print(entry.size(), DEC);
87114
time_t cr = entry.getCreationTime();
88115
time_t lw = entry.getLastWrite();
89-
struct tm * tmstruct = localtime(&cr);
116+
struct tm* tmstruct = localtime(&cr);
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Serial.printf("\tCREATION: %d-%02d-%02d %02d:%02d:%02d", (tmstruct->tm_year) + 1900, (tmstruct->tm_mon) + 1, tmstruct->tm_mday, tmstruct->tm_hour, tmstruct->tm_min, tmstruct->tm_sec);
91118
tmstruct = localtime(&lw);
92119
Serial.printf("\tLAST WRITE: %d-%02d-%02d %02d:%02d:%02d\n", (tmstruct->tm_year) + 1900, (tmstruct->tm_mon) + 1, tmstruct->tm_mday, tmstruct->tm_hour, tmstruct->tm_min, tmstruct->tm_sec);

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