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libraries/audio-tools/examples/tests/etc/test-ringbufferfile/test-ringbufferfile.ino

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+/**
+ * @file test-ringbufferfile.ino
+ * @author Phil Schatzmann
+ * @brief genTest for the file backed ringbuffer
+ * @version 0.1
+ * @date 2023-04-30
+ *
+ * @copyright Copyright (c) 2022
+ *
+ */
+/**
+ * Test for the file backed ringbuffer
+ */
+#include <SdFat.h>
+
+#include "AudioTools.h"
+// SD pins
+#define PIN_SD_CARD_CS 13
+#define PIN_SD_CARD_MISO 2
+#define PIN_SD_CARD_MOSI 15
+#define PIN_SD_CARD_CLK 14
+
+const char* file_name = "/tmp.bin";
+SdFs SD;
+FsFile file;
+RingBufferFile<FsFile, int16_t> buffer(file);
+
+void setup() {
+  Serial.begin(115200);
+  AudioToolsLogger.begin(Serial, AudioToolsLogLevel::Info);
+
+  // setup SD
+  SPI.begin(PIN_SD_CARD_CLK, PIN_SD_CARD_MISO, PIN_SD_CARD_MOSI,
+            PIN_SD_CARD_CS);
+  while (!SD.begin(PIN_SD_CARD_CS, SPI_HALF_SPEED)) {
+    Serial.println("Card Mount Failed");
+    delay(500);
+  }
+
+  // create file and setup buffer
+  file = SD.open(file_name, O_RDWR | O_CREAT);
+  if (!file) {
+    Serial.println("Failed to open file for writing");
+    return;
+  }
+  if (!buffer.begin(file)) {
+    Serial.println("Failed to create buffer");
+    return;
+  }
+
+  // test write
+  for (int j = 0; j < 10; j++) {
+    buffer.write(j);
+  }
+
+  // test write array
+  int16_t tmp[10];
+  for (int j = 0; j < 10; j++) {
+    tmp[j] = j;
+  }
+  buffer.writeArray(tmp, 10);
+
+  // test read
+  Serial.println("read");
+  for (int j = 0; j < 10; j++) {
+    int16_t result;
+    if (buffer.read(result)) {
+      Serial.print(result);
+      Serial.print(" ");
+    }
+    assert(result == j);
+  }
+  Serial.println();
+
+  // test read array
+  Serial.print("readArray");
+  Serial.print(" ");
+  Serial.println(buffer.available());
+  memset(tmp, 0, 10 * sizeof(int16_t));
+
+  int max = buffer.readArray(tmp, buffer.available());
+  for (int j = 0; j < max; j++) {
+    Serial.print(tmp[j]);
+    Serial.print(" ");
+    assert(j == tmp[j]);
+  }
+  Serial.println();
+
+  file.close();
+  Serial.println("Test success!");
+
+  // cleanup
+  SD.remove(file_name);
+}
+
+void loop() {}