Initial commit

SD_Shield_Tester 2.ino

@@ -0,0 +1,274 @@
+
+
+//=============================================================================
+
+
+#include <Arduino.h>
+#include <SD.h>
+
+#include <SPI.h>
+
+// The pins used on the newer SD Shields.
+
+#define NEW_SHIELD_PIN  38
+#define OPTION_1_PIN    42
+#define OPTION_2_PIN    41
+#define OPTION_3_PIN    40
+#define OPTION_4_PIN    39
+#define TIMER_OUT_PIN   43    //maps to pin 18, CB1
+
+// Pin used by the SD card
+
+#define SD_PIN  53
+
+// Pin with the presence sensor
+
+#define PRESENCE_PIN 19
+
+// Define the pins used for the LEDs
+
+#define RED_LED_PIN  24
+#define YELLOW_LED_PIN  23
+#define GREEN_LED_PIN  22
+
+
+// Trying to remember if HIGH or LOW turns the LEDs on or off, so these
+// two macros make it easier.
+
+#define LED_OFF  HIGH
+#define LED_ON   LOW
+
+
+
+
+
+
+int shieldRevision;
+
+
+
+//=============================================================================
+void setup()
+{
+        Serial.begin(9600);
+        Serial.println("Corsham Tech SD Shield Tester");
+
+        // Find what revision this shield is and set a variable.
+        // This value changes what needs to be tested.
+
+        shieldRevision = getShieldRevision();
+        Serial.print("This appears to be a revision ");
+        Serial.print(shieldRevision);
+        Serial.println(" shield.  Verify this is correct.");
+
+        pinMode(SD_PIN, OUTPUT);    // required by SD library
+
+        // Configure the new option pins as inputs with pull-ups
+        pinMode(NEW_SHIELD_PIN, INPUT_PULLUP);
+        pinMode(OPTION_1_PIN, INPUT_PULLUP);
+        pinMode(OPTION_2_PIN, INPUT_PULLUP);
+        pinMode(OPTION_3_PIN, INPUT_PULLUP);
+        pinMode(OPTION_4_PIN, INPUT_PULLUP);
+
+        pinMode(PRESENCE_PIN, INPUT);   // pin with presence bit
+
+        pinMode(RED_LED_PIN, OUTPUT);
+        digitalWrite(RED_LED_PIN, LED_OFF);
+
+        pinMode(YELLOW_LED_PIN, OUTPUT);
+        digitalWrite(YELLOW_LED_PIN, LED_OFF);
+
+        pinMode(GREEN_LED_PIN, OUTPUT);
+        digitalWrite(GREEN_LED_PIN, LED_ON);
+
+        // Configure new output pins
+        pinMode(TIMER_OUT_PIN, OUTPUT);
+
+        SD.begin(SD_PIN);
+}
+
+
+
+//=============================================================================
+void loop()
+{
+        int key;
+
+        printMenu();
+
+        // Now wait for the user to send a command
+
+        do
+        {
+                key = Serial.read();
+        }
+        while (!isprint(key));
+
+        switch (key)
+        {
+                case 'r':
+                case 'R':
+                        toggleLED(RED_LED_PIN, "Red");
+                        break;
+
+                case 'y':
+                case 'Y':
+                        toggleLED(YELLOW_LED_PIN, "Yellow");
+                        break;
+
+                case 'g':
+                case 'G':
+                        toggleLED(GREEN_LED_PIN, "Green");
+                        break;
+
+                case 'i':
+                case 'I':
+                        doInstalledTest();
+                        break;
+
+                case 'o':
+                case 'O':
+                        doShowOptionSwitches();
+                        break;
+
+                case 's':
+                case 'S':
+                        sdAccessTest();
+                        break;
+        }
+}
+
+
+
+//=============================================================================
+void printMenu(void)
+{
+        Serial.println("");
+        Serial.println("Options:");
+        Serial.println("   R = Toggle red LED");
+        Serial.println("   Y = Toggle yellow LED");
+        Serial.println("   G = Toggle green LED");
+
+        if (shieldRevision == 2)
+        {
+                Serial.println("   O = Show option switch settings");
+        }
+        Serial.println("   I = Show if SD card is installed or not");
+}
+
+
+
+//=============================================================================
+// Given an LED pin number and name, toggle the state and display the
+// new state.
+
+void toggleLED(int pin, char *name)
+{
+        Serial.print(name);
+        if (digitalRead(pin))
+        {
+                Serial.println(" LED is now on");
+                digitalWrite(pin, LED_ON);
+        }
+        else
+        {
+                Serial.println(" LED is now off");
+                digitalWrite(pin, LED_OFF);
+        }
+}
+
+
+
+//=============================================================================
+void doInstalledTest(void)
+{
+        if (digitalRead(PRESENCE_PIN))
+        {
+                Serial.println("SD is not installed");
+        }
+        else
+        {
+                Serial.println("SD is installed");
+        }
+}
+
+
+
+//=============================================================================
+void doShowOptionSwitches(void)
+{
+        Serial.print("Option 1: ");
+        Serial.println(digitalRead(OPTION_1_PIN) ? "Off" : "On");
+
+        Serial.print("Option 2: ");
+        Serial.println(digitalRead(OPTION_2_PIN) ? "Off" : "On");
+
+        Serial.print("Option 3: ");
+        Serial.println(digitalRead(OPTION_3_PIN) ? "Off" : "On");
+
+        Serial.print("Option 4: ");
+        Serial.println(digitalRead(OPTION_4_PIN) ? "Off" : "On");
+}
+
+
+
+//=============================================================================
+// This returns the version of the shield.  Currently it only supports old
+// (version 1) or new (version 2).  Returns 1 or 2.
+
+int getShieldRevision(void)
+{
+        if (digitalRead(NEW_SHIELD_PIN))
+                return 1;
+        else
+                return 2;
+}
+
+
+
+//=============================================================================
+// This test to see if we can read the SD card.  It doesn't need to do much,
+// just basic access is enough to prove the board is working.
+
+void sdAccessTest(void)
+{
+        File root;    // root directory
+
+        if (digitalRead(PRESENCE_PIN))
+        {
+                Serial.println("SD is not installed; can't run test.");
+                return;
+        }
+
+        root = SD.open("/");
+        if (root < 0)
+        {
+                Serial.println("Could not read the card");
+                return;
+        }
+
+  while (true) {
+
+    File entry =  root.openNextFile();
+    if (! entry)
+    {
+      // no more files
+      return;
+    }
+
+    Serial.print(entry.name());
+    if (entry.isDirectory())
+    {
+
+    } else {
+      // files have sizes, directories do not
+      Serial.print("\t\t");
+      Serial.println(entry.size(), DEC);
+    }
+    entry.close();
+  }
+//        SD.close();
+        Serial.println("SD card access succeeded");
+}
+
+