added simple performance test for FRAM

libraries/FRAM/examples/testFRAMPerformance/testFRAMPerformance.ino

@@ -0,0 +1,88 @@
+//
+//    FILE: testFRAMPerformance.ino
+//  AUTHOR: Rob Tillaart
+// VERSION: 0.1.0
+// PURPOSE: test for FRAM library for Arduino
+//     URL:
+//
+// Released to the public domain
+//
+
+#include "FRAM.h"
+
+FRAM fram;
+
+uint32_t start;
+uint32_t stop;
+
+void setup()
+{
+  Serial.begin(115200);
+  Serial.println(__FILE__);
+  Serial.print("FRAM_LIB_VERSION: ");
+  Serial.println(FRAM_LIB_VERSION);
+  Serial.println();
+  Serial.println();
+
+  Wire.begin();
+
+  int rv = fram.begin(0x50);
+  if (rv != 0)
+  {
+    Serial.println(rv);
+  }
+  else
+  {
+    for (int s = 1; s < 9; s++)  // test up to 800 KB
+    {
+      uint32_t speed = s * 100000UL;
+      Serial.print("CLOCK: ");
+      Serial.println(speed);
+      Wire.setClock(speed);
+      testReadWriteLarge();
+    }
+    Wire.setClock(100000);
+  }
+  Serial.println("done...");
+}
+
+void loop()
+{
+}
+
+void testReadWriteLarge()
+{
+  Serial.println();
+  Serial.println(__FUNCTION__);
+
+  uint8_t ar[100];
+  for (int i = 0; i < 100; i++) ar[i] = i;
+
+  start = millis();
+  fram.write(1000, ar, 100);
+  stop = millis();
+  Serial.print("WRITE 100 bytes TIME:\t");
+  Serial.print(stop - start);
+  Serial.println(" ms");
+
+  for (int i = 0; i < 100; i++) ar[i] = 0;
+
+  start = millis();
+  fram.read(1000, ar, 100);
+  stop = millis();
+  Serial.print("READ 100 bytes TIME:\t");
+  Serial.print(stop - start);
+  Serial.println(" ms");
+
+  for (int i = 0; i < 100; i++)
+  {
+    if (ar[i] != i)
+    {
+      Serial.print("FAIL: \t");
+      Serial.println(i);
+    }
+  }
+  Serial.println();
+}
+
+// END OF FILE