Added defineChar function and updated examples

Author: fourstix

examples/Example10_DefineChar/Example10_DefineChar.ino

@@ -0,0 +1,64 @@
+/**************************************************************************************
+ * This example redefines some characters of an alphanumeric display.
+ * 
+ * Written by Gaston Williams
+ * April 30, 2020
+ * 
+ * Based on code written by
+ * Priyanka Makin @ SparkFun Electronics
+ * Original Creation Date: February 26, 2020
+ * 
+ * SparkFun labored with love to create this code. Feel like supporting open source hardware?
+ * Buy a board from SparkFun! https://www.sparkfun.com/products/16426
+ * 
+ * This code is beerware; if you see me (or any other SparkFun employee) at the
+ * local, and you've found our code helpful, please buy us a round!
+ * 
+ * Hardware Connections:
+ * Attach Red Board to computer using micro-B USB cable.
+ * Attach Qwiic Alphanumeric board to Red Board using Qwiic cable. 
+ *  Don't close any of the address jumpers so that it defaults to address 0x70.
+ * 
+ * Distributed as-is; no warranty is given.
+ *****************************************************************************************/
+#include <SparkFun_Alphanumeric_Display.h>
+HT16K33 display;
+
+void setup() {
+  Serial.begin(115200);
+  Serial.println("Qwiic Alphanumeric examples");
+  Wire.begin(); //Join I2C bus
+
+  //check if displays will acknowledge
+  if (display.begin() == false)
+  {
+    Serial.println("Device did not acknowledge! Freezing.");
+    while(1);
+  }
+  Serial.println("Displays acknowledged.");
+  
+  //Just for demo purposes, show original characters before change
+  display.print("cafe");
+  delay(500);
+  display.print("size");
+  
+
+  //Update a, e, f, s and z to new characters
+  //This change is not permanent, and lasts only for this program.
+  
+  //define 14 segment bits: nmlkjihgfedcba
+  display.defineChar('a', 0b01000001011000);                              
+  display.defineChar('e', 0b10000001011000);
+  display.defineChar('f', 0b01010101000000);
+  display.defineChar('s', 0b00100100001000);
+  display.defineChar('z', 0b10000001001000);
+}
+
+void loop() 
+{ 
+  //Show the new characters
+  delay(500);
+  display.print("cafe");
+  delay(500);
+  display.print("size");
+}

examples/Example7_unkownChar/Example7_unkownChar.ino

@@ -3,9 +3,10 @@
  * 
  * Priyanka Makin @ SparkFun Electronics
  * Original Creation Date: March 13, 2020
+ * Updated April 30, 2020 by Gaston Williams - changed exclamation to tab character
  * 
  * SparkFun labored with love to create this code. Feel like supporting open source hardware?
- * Buy a board from SparkFun! https://www.sparkfun.com/products/16391
+ * Buy a board from SparkFun! LINK GOES HERE
  * 
  * This code is Lemonadeware; if you see me (or any other SparkFun employee) at the 
  * local, and you've found our code helpful, please buy us a round!
@@ -18,7 +19,7 @@
  ****************************************************************************************/
 #include <Wire.h>
 
-#include <SparkFun_Alphanumeric_Display.h>  //Click here to get the library: http://librarymanager/All#Alphanumeric_Display by SparkFun
+#include <SparkFun_Alphanumeric_Display.h>  //Click here to get the library:
 HT16K33 display;
 
 void setup() {
@@ -34,7 +35,7 @@ void setup() {
   }
   Serial.println("Display acknowledged.");
 
-  display.print("!!!!");
+  display.print("\t\t\t\t");  //tabs are not printable characters
 }
 
 void loop()