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arduino-cli/libraries/Adafruit_seesaw_Library/examples/analog/Fade/Fade.ino

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+/*
+  Fade
+
+  This example shows how to fade an LED on pin 6 of a seesaw board using the analogWrite()
+  function.
+
+  The analogWrite() function uses PWM, so if you want to change the pin you're
+  using, be sure to use another PWM capable pin. On the SAMD09 breakout these are pins 5, 6, and 7
+*/
+
+#include "Adafruit_seesaw.h"
+
+Adafruit_seesaw ss;
+
+int led = 6;           // the PWM pin the LED is attached to
+int brightness = 0;    // how bright the LED is
+int fadeAmount = 5;    // how many points to fade the LED by
+
+// the setup routine runs once when you press reset:
+void setup() {
+  Serial.begin(9600);
+  
+  if(!ss.begin()){
+    Serial.println("ERROR!");
+    while(1);
+  }
+  else Serial.println("seesaw started");
+}
+
+// the loop routine runs over and over again forever:
+void loop() {
+  // set the brightness of pin 9:
+  ss.analogWrite(led, brightness);
+
+  // change the brightness for next time through the loop:
+  brightness = brightness + fadeAmount;
+
+  // reverse the direction of the fading at the ends of the fade:
+  if (brightness <= 0 || brightness >= 255) {
+    fadeAmount = -fadeAmount;
+  }
+  // wait for 30 milliseconds to see the dimming effect
+  delay(30);
+}

arduino-cli/libraries/Adafruit_seesaw_Library/examples/analog/analogRead/analogRead.ino

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+/*
+ * This example shows how read the ADC on a seesaw. The default ADC pins on the SAMD09 Breakout are 2, 3, and 4.
+ */
+
+#include "Adafruit_seesaw.h"
+
+Adafruit_seesaw ss;
+
+void setup() {
+  Serial.begin(9600);
+  
+  if(!ss.begin()){
+    Serial.println("ERROR!");
+    while(1);
+  }
+  else Serial.println("seesaw started");
+}
+
+void loop() {
+  Serial.print(ss.analogRead(2));
+  Serial.print(",");
+  Serial.println(ss.analogRead(3));
+  delay(50);  
+}