Add segment name definitions for alphanumeric displays

Adafruit_LEDBackpack.h

@@ -50,6 +50,22 @@
 
 #define SEVENSEG_DIGITS 5 ///< # Digits in 7-seg displays, plus NUL end
 
+#define ALPHANUM_SEG_A 0b0000000000000001  ///< Alphanumeric segment A
+#define ALPHANUM_SEG_B 0b0000000000000010  ///< Alphanumeric segment B
+#define ALPHANUM_SEG_C 0b0000000000000100  ///< Alphanumeric segment C
+#define ALPHANUM_SEG_D 0b0000000000001000  ///< Alphanumeric segment D
+#define ALPHANUM_SEG_E 0b0000000000010000  ///< Alphanumeric segment E
+#define ALPHANUM_SEG_F 0b0000000000100000  ///< Alphanumeric segment F
+#define ALPHANUM_SEG_G1 0b0000000001000000 ///< Alphanumeric segment G1
+#define ALPHANUM_SEG_G2 0b0000000010000000 ///< Alphanumeric segment G2
+#define ALPHANUM_SEG_H 0b0000000100000000  ///< Alphanumeric segment H
+#define ALPHANUM_SEG_J 0b0000001000000000  ///< Alphanumeric segment J
+#define ALPHANUM_SEG_K 0b0000010000000000  ///< Alphanumeric segment K
+#define ALPHANUM_SEG_L 0b0000100000000000  ///< Alphanumeric segment L
+#define ALPHANUM_SEG_M 0b0001000000000000  ///< Alphanumeric segment M
+#define ALPHANUM_SEG_N 0b0010000000000000  ///< Alphanumeric segment N
+#define ALPHANUM_SEG_DP 0b0100000000000000 ///< Alphanumeric segment DP
+
 /*!
     @brief  Class encapsulating the raw HT16K33 controller device.
 */

examples/quadalphaanimation/quadalphaanimation.ino

@@ -0,0 +1,42 @@
+// This example shows how to use the alphanumeric segment names in an animation.
+//
+// Author: Jonny Bergdahl ([email protected])
+//
+#include <Arduino.h>
+#include <Adafruit_LEDBackpack.h>
+
+Adafruit_AlphaNum4 alpha4 = Adafruit_AlphaNum4();
+// Defines the animation. For segment names, 
+// see https://learn.adafruit.com/14-segment-alpha-numeric-led-featherwing/usage
+uint16_t animation[] { 0, ALPHANUM_SEG_A, 
+                       1, ALPHANUM_SEG_H, 
+                       1, ALPHANUM_SEG_N, 
+                       2, ALPHANUM_SEG_L, 
+                       2, ALPHANUM_SEG_K, 
+                       3, ALPHANUM_SEG_A, 
+                       3, ALPHANUM_SEG_B, 
+                       3, ALPHANUM_SEG_C, 
+                       3, ALPHANUM_SEG_D, 
+                       2, ALPHANUM_SEG_N,
+                       2, ALPHANUM_SEG_H, 
+                       1, ALPHANUM_SEG_K,
+                       1, ALPHANUM_SEG_L, 
+                       0, ALPHANUM_SEG_D,
+                       0, ALPHANUM_SEG_E,
+                       0, ALPHANUM_SEG_F };
+
+void setup() {
+  Serial.begin(9600);  
+  alpha4.begin(0x70);  // pass in the address
+}
+
+void loop() {
+  // For each step of the animation, write the value to the given digit
+  for (int j = 0; j < sizeof(animation)/2; j = j + 2)
+  {
+    alpha4.clear();
+    alpha4.writeDigitRaw(animation[j], animation[j+1]);
+    alpha4.writeDisplay();
+    delay(200);
+  }
+}