snapshot

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

@@ -0,0 +1,76 @@
+#include "SPI.h"
+#include "SD.h"
+#include "SD_MMC.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
+
+uint8_t data[1024 * 100];
+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, 0, 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) {
+
+  for (int i : len) {
+    int32_t start = millis();
+    auto file = sd.open(test_file, write);
+    file.seek(0);
+    assert(file);
+    testWrite(file, 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, i, totalSize);
+    file.close();
+    logTime(start, i, name, "Read");
+  }
+  sd.end();
+}
+
+
+void setup() {
+  Serial.begin(115200);
+
+  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);
+  while (!SD.begin(PIN_AUDIO_KIT_SD_CARD_CS)) {
+    Serial.println("SD error");
+    delay(1000);
+  }
+  testFS<fs::SDFS, const char*>("SD", SD, FILE_WRITE, FILE_READ);
+}
+
+void loop() {}

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

@@ -0,0 +1,21 @@
+Write, SD, 1, 12813, 0.081837
+Write, SD, 5, 4578, 0.229047
+Write, SD, 10, 3550, 0.295374
+Write, SD, 25, 2927, 0.358243
+Write, SD, 100, 2623, 0.399762
+Write, SD, 256, 2607, 0.402216
+Write, SD, 512, 2571, 0.407848
+Write, SD, 1024, 2601, 0.403143
+Write, SD, 10240, 2531, 0.414293
+Write, SD, 102400, 2451, 0.427816
+Read, SD, 1, 13009, 0.080604
+Read, SD, 5, 4538, 0.231066
+Read, SD, 10, 3478, 0.301488
+Read, SD, 25, 2845, 0.368568
+Read, SD, 100, 2527, 0.414949
+Read, SD, 256, 2463, 0.425731
+Read, SD, 512, 2443, 0.429217
+Read, SD, 1024, 2432, 0.431158
+Read, SD, 10240, 2423, 0.432759
+Read, SD, 102400, 2421, 0.433117
+