almost no flash left :/

Makefile

@@ -32,6 +32,7 @@ INCLUDES += -I./asf/sam0/drivers/system/interrupt -I./asf/sam0/drivers/system/in
 INCLUDES += -I./boards/$(BOARD)
 
 COMMON_SRC = \
+        src/neopixel.c \
 	src/flash.c \
 	src/init.c \
 	src/startup_samd21.c \

boards/circuitplay/board_config.h

@@ -7,14 +7,18 @@
 #define VENDOR_NAME "Adafruit Industries"
 #define PRODUCT_NAME "Circuit Playground Express"
 #define VOLUME_LABEL "CPLAYBOOT"
+#define INDEX_URL "https://adafru.it/cplayxpress"
 
 #define BOARD_ID "SAMD21G18A-CPlay-v0"
 
 #define USB_VID 0x239A
-#define USB_PID 0x8019
+#define USB_PID 0x0019
 
 #define LED_PIN PIN_PA17
 //#define LED_TX_PIN PIN_PA27
 //#define LED_RX_PIN PIN_PB03
 
+#define BOARD_RGBLED_NEOPIX_PORT           (1) // PB
+#define BOARD_RGBLED_NEOPIX_PIN            (23) // 23
+#define NUM_NEOPIXELS                      1
 #endif

inc/uf2.h

@@ -208,6 +208,7 @@ void led_tick(void);
 void led_signal(void);
 void led_init(void);
 void RGBLED_set_color(uint8_t red, uint8_t green, uint8_t blue);
+void NeoPixel_show(uint8_t);
 
 #define LED_MSC_OFF() PINOP(LED_PIN, OUTCLR)
 #define LED_MSC_ON() PINOP(LED_PIN, OUTSET)

src/utils.c

@@ -139,6 +139,9 @@ void led_init() {
     // using APA102, set pins to outputs
     PORT->Group[BOARD_RGBLED_CLOCK_PORT].DIRSET.reg = (1<<BOARD_RGBLED_CLOCK_PIN); 
     PORT->Group[BOARD_RGBLED_DATA_PORT].DIRSET.reg = (1<<BOARD_RGBLED_DATA_PIN); 
+#endif
+#if defined(BOARD_RGBLED_NEOPIX_PORT)
+    PORT->Group[BOARD_RGBLED_NEOPIX_PORT].DIRSET.reg = (1<<BOARD_RGBLED_NEOPIX_PIN); 
 #endif
     // and clock 0x00000 out!    
     RGBLED_set_color(0,0,0);
@@ -186,4 +189,12 @@ void RGBLED_set_color(uint8_t red, uint8_t green, uint8_t blue) {
   // set clock port low for 100ms
   delay(100);
 #endif
+
+#if defined(BOARD_RGBLED_NEOPIX_PORT)
+  NeoPixel_show(88);
+
+  // set clock port low for 100ms
+  delay(100);
+#endif
 }
+