91 lines
2.6 KiB
Arduino
91 lines
2.6 KiB
Arduino
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/**
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* @file sd-test.ino
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* @brief MicroSD card test for the Guition ESP32-S3 4.3" 480x272 display,
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* accessed over plain SPI (SD.h) rather than SD_MMC. See sdmmc-test.ino
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* in the sibling folder for the same card over SD_MMC instead - it's the
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* same 4 physical pins either way (SD cards support both interfaces on
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* the same wiring: CLK, CMD/MOSI, DAT0/MISO, DAT3/CS), just accessed
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* through a different ESP32 peripheral/library. SD_MMC is what got
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* confirmed working first; this SPI variant is UNTESTED but should work
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* on the same wiring since it's electrically the same bus in a different
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* mode - verify on your hardware before relying on it.
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*
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* Writes a small test file, reads it back, and lists the card's root
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* directory.
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*
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* @author Phil Schatzmann
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* @copyright GPLv3
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*/
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#include <FS.h>
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#include <SD.h>
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#include <SPI.h>
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// Same physical pins as sdmmc-test.ino, confirmed working there;
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// untested in SPI mode - see file header.
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constexpr int kPinSdCs = 10; // DAT3 in SD_MMC mode
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constexpr int kPinSdMosi = 11; // CMD in SD_MMC mode
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constexpr int kPinSdClk = 12;
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constexpr int kPinSdMiso = 13; // DAT0 in SD_MMC mode
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const char* testFile = "/audiotools_sd_test.txt";
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const char* testContent = "arduino-audio-tools sd-test\n";
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void listDir(const char* path) {
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File root = SD.open(path);
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File entry;
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while ((entry = root.openNextFile())) {
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Serial.printf(" %s%s (%u bytes)\n", path, entry.name(), entry.size());
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entry.close();
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}
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}
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bool writeReadTest() {
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File f = SD.open(testFile, FILE_WRITE);
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if (!f) {
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Serial.println("open for write failed");
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return false;
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}
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f.print(testContent);
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f.close();
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f = SD.open(testFile, FILE_READ);
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if (!f) {
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Serial.println("open for read failed");
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return false;
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}
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String readBack = f.readString();
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f.close();
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Serial.printf("read back: %s", readBack.c_str());
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return readBack == testContent;
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}
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void setup() {
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Serial.begin(115200);
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while (!Serial) delay(10);
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Serial.println("starting SD (SPI)...");
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SPI.begin(kPinSdClk, kPinSdMiso, kPinSdMosi, kPinSdCs);
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if (!SD.begin(kPinSdCs)) {
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Serial.println("SD.begin() failed - check card is inserted");
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return;
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}
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uint8_t cardType = SD.cardType();
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if (cardType == CARD_NONE) {
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Serial.println("no SD card found");
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return;
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}
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Serial.printf("card type: %d, size: %llu MB\n", cardType,
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SD.cardSize() / (1024 * 1024));
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Serial.println(writeReadTest() ? "write/read test: OK"
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: "write/read test: FAILED");
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Serial.println("root directory:");
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listDir("/");
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}
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void loop() {}
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