auto-use feather wing pins

Author: ladyada

Adafruit_ESP32_Arduino_Demos/SerialESPPassthrough/SerialESPPassthrough.ino

@@ -23,7 +23,18 @@
 
 unsigned long baud = 115200;
 
-Adafruit_NeoPixel pixel = Adafruit_NeoPixel(1, 2, NEO_GRB + NEO_KHZ800);
+#if defined(ADAFRUIT_FEATHER_M4_EXPRESS) 
+  // Configure the pins used for the ESP32 connection
+  #define SerialESP32   Serial1
+  #define SPIWIFI       SPI    // The SPI port
+  #define SPIWIFI_SS    13   // Chip select pin
+  #define ESP32_RESETN  12   // Reset pin
+  #define SPIWIFI_ACK   11   // a.k.a BUSY or READY pin
+  #define ESP32_GPIO0   10
+  #define NEOPIXEL_PIN   8
+#endif
+
+Adafruit_NeoPixel pixel = Adafruit_NeoPixel(1, NEOPIXEL_PIN, NEO_GRB + NEO_KHZ800);
 
 
 void setup() {
@@ -35,18 +46,18 @@ void setup() {
   pixel.setPixelColor(0, 50, 50, 50); pixel.show();
 
   delay(100);
-  SerialNina.begin(baud);
+  SerialESP32.begin(baud);
 
-  pinMode(13, OUTPUT);
-  pinMode(NINA_GPIO0, OUTPUT);
-  pinMode(NINA_RESETN, OUTPUT);
+  pinMode(SPIWIFI_SS, OUTPUT);
+  pinMode(ESP32_GPIO0, OUTPUT);
+  pinMode(ESP32_RESETN, OUTPUT);
 
   // manually put the ESP32 in upload mode
-  digitalWrite(NINA_GPIO0, LOW);
+  digitalWrite(ESP32_GPIO0, LOW);
 
-  digitalWrite(NINA_RESETN, LOW);
+  digitalWrite(ESP32_RESETN, LOW);
   delay(100);
-  digitalWrite(NINA_RESETN, HIGH);
+  digitalWrite(ESP32_RESETN, HIGH);
   pixel.setPixelColor(0, 20, 20, 0); pixel.show();
   delay(100);
 }
@@ -57,8 +68,8 @@ void loop() {
     SerialESP32.write(Serial.read());
   }
 
-  while (SerialNina.available()) {
+  while (SerialESP32.available()) {
     pixel.setPixelColor(0, 0, 0, 10); pixel.show();
-    Serial.write(SerialNina.read());
+    Serial.write(SerialESP32.read());
   }
 }