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2026-09-25 10:48:51 +10:00
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+// This example shows how to use the alphanumeric segment names in an animation.
+//
+// Author: Jonny Bergdahl (github@bergdahl.org)
+//
+#include <Arduino.h>
+#include <Adafruit_LEDBackpack.h>
+
+Adafruit_AlphaNum4 alpha4 = Adafruit_AlphaNum4();
+
+/*
+Segment names for 14-segment alphanumeric displays.
+See https://learn.adafruit.com/14-segment-alpha-numeric-led-featherwing/usage
+
+    -------A-------
+    |\     |     /|
+    | \    J    / |
+    |   H  |  K   |
+    F    \ | /    B
+    |     \|/     |
+    |--G1--|--G2--|
+    |     /|\     |
+    E    / | \    C
+    |   L  |   N  |
+    | /    M    \ |
+    |/     |     \|
+    -------D-------  DP
+*/
+
+uint16_t animation[] { 0, ALPHANUM_SEG_A | ALPHANUM_SEG_D, 
+                       1, ALPHANUM_SEG_H | ALPHANUM_SEG_L, 
+                       1, ALPHANUM_SEG_N | ALPHANUM_SEG_K, 
+                       2, ALPHANUM_SEG_L | ALPHANUM_SEG_H, 
+                       2, ALPHANUM_SEG_K | ALPHANUM_SEG_N, 
+                       3, ALPHANUM_SEG_A | ALPHANUM_SEG_D, 
+                       3, ALPHANUM_SEG_B | ALPHANUM_SEG_C, 
+                       3, ALPHANUM_SEG_C | ALPHANUM_SEG_B, 
+                       3, ALPHANUM_SEG_D | ALPHANUM_SEG_A, 
+                       2, ALPHANUM_SEG_N | ALPHANUM_SEG_K,
+                       2, ALPHANUM_SEG_H | ALPHANUM_SEG_L, 
+                       1, ALPHANUM_SEG_K | ALPHANUM_SEG_N,
+                       1, ALPHANUM_SEG_L | ALPHANUM_SEG_H, 
+                       0, ALPHANUM_SEG_D | ALPHANUM_SEG_A,
+                       0, ALPHANUM_SEG_E | ALPHANUM_SEG_F,
+                       0, ALPHANUM_SEG_F | ALPHANUM_SEG_E };
+
+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);
+  }
+}