snapshot

libraries/audio-tools/examples/tests/performance/file-speeds-sdfat/file-speeds-sdfat.ino

@@ -0,0 +1,86 @@
+#include "SPI.h"
+#include "SdFat.h"
+
+#define PIN_AUDIO_KIT_SD_CARD_CS 13
+#define PIN_AUDIO_KIT_SD_CARD_MISO 2
+#define PIN_AUDIO_KIT_SD_CARD_MOSI 15
+#define PIN_AUDIO_KIT_SD_CARD_CLK 14
+#define SPI_CLOCK SD_SCK_MHZ(10)
+
+uint8_t* data = nullptr;
+int len[] = { 1, 5, 10, 25, 100, 256, 512, 1024, 1024 * 10, 1024 * 100 };
+size_t totalSize = 1024 * 1024 * 1;
+const char* test_file = "/test.txt";
+
+void testWrite(Stream& file, int writeSize, int totalSize) {
+  memset(data, 0xff, sizeof(data));
+  int32_t start = millis();
+  while (totalSize > 0) {
+    int written = file.write(data, min(writeSize, totalSize));
+    //Serial.println(written);
+    //assert(written > 0);
+    totalSize -= written;
+  }
+}
+
+void testRead(Stream& file, int readSize, int totalSize) {
+  memset(data, 0, sizeof(data));
+  while (totalSize > 0) {
+    int read = file.readBytes(data, min(readSize, totalSize));
+    //assert(read>0);
+    totalSize -= read;
+  }
+}
+
+void logTime(uint32_t start, int i, const char* name, const char* op) {
+  int32_t time = millis() - start;
+  float thru = (float)totalSize / (float)time / 1000.0;
+  Serial.printf("%s, %s, %d, %d, %f\n", op, name, i, time, thru);
+}
+
+
+template<typename SD, typename Open>
+void testFS(const char* name, SD& sd, Open write, Open read) {
+  SdSpiConfig cfg(PIN_AUDIO_KIT_SD_CARD_CS, DEDICATED_SPI, SPI_CLOCK, &SPI);
+  while (!sd.begin(cfg)) {
+    Serial.print(name);
+    Serial.println(" error");
+    delay(1000);
+  }
+
+  for (int i : len) {
+    int32_t start = millis();
+    auto file = sd.open(test_file, write);
+    assert(file);
+    file.seek(0);
+    testWrite(file, len[i], totalSize);
+    file.close();
+    logTime(start, i, name, "Write");
+  }
+  for (int i : len) {
+    int32_t start = millis();
+    auto file = sd.open(test_file, read);
+    assert(file);
+    testRead(file, len[i], totalSize);
+    file.close();
+    logTime(start, i, name, "Read");
+  }
+  sd.end();
+}
+
+void setup() {
+  Serial.begin(115200);
+  // allocate read/write buffer
+  data = new uint8_t[1024 * 100];
+  assert(data != nullptr);
+
+  // setup SPI pins
+  SPI.begin(PIN_AUDIO_KIT_SD_CARD_CLK, PIN_AUDIO_KIT_SD_CARD_MISO, PIN_AUDIO_KIT_SD_CARD_MOSI, PIN_AUDIO_KIT_SD_CARD_CS);
+  delay(1000);
+  
+  // test SD
+  SdFat sdfat;
+  testFS<SdFat, int>("SDFAT", sdfat, FILE_WRITE, FILE_READ);
+}
+
+void loop() {}

libraries/audio-tools/examples/tests/performance/file-speeds-sdfat/result.txt

@@ -0,0 +1 @@
+There seems to be a bug in the library, since this is dumping!