fix LED - tested!

Author: ladyada

bootloaders/feather/Makefile

@@ -87,8 +87,8 @@ else ifeq ($(TARGET), FEATHER_SAMR)
    NAME=feather_samr_samr21g18_sam_ba
 else ifeq ($(TARGET), TRINKET_M0)
    # Adafruit Trinket M0 (0x239A 0x0016), crystalless  *fix chipset*
-   CFLAGS_EXTRA?=-D__SAMD21G18A__ -DUSB_PID_HIGH=0x00 -DUSB_PID_LOW=0x16 -DUSB_VID_LOW=0x9A -DUSB_VID_HIGH=0x23 -DSTRING_MANUFACTURER="Adafruit Industries LLC" -DSTRING_PRODUCT="Adafruit Trinket M0"  -DCRYSTALLESS
-   NAME=trinket_m0_samd21g18_sam_ba
+   CFLAGS_EXTRA?=-D__SAMD21E18A__ -DUSB_PID_HIGH=0x00 -DUSB_PID_LOW=0x16 -DUSB_VID_LOW=0x9A -DUSB_VID_HIGH=0x23 -DSTRING_MANUFACTURER="Adafruit Industries LLC" -DSTRING_PRODUCT="Adafruit Trinket M0"  -DCRYSTALLESS -DSAM_BA_INTERFACE=SAM_BA_USBCDC_ONLY
+   NAME=trinket_m0_samd21e18_sam_ba
 else
    # ???
    $(error Unknown target, please edit makefile to select FEATHER_M0, METRO_M0, TRINKET_M0 or FEATHER_SAMR )

bootloaders/feather/board_definitions.h

@@ -60,6 +60,8 @@
 /*
  * LEDs definitions
  */
+
+#if defined(__SAMR21G18A__) || defined(__SAMD21G18A__)
 #define BOARD_LED_PORT                    (0)
 #define BOARD_LED_PIN                     (17)
 
@@ -69,4 +71,17 @@
 #define BOARD_LEDTX_PORT                  (0)
 #define BOARD_LEDTX_PIN                   (27)
 
+#elif  defined(__SAMD21E18A__)
+
+#define BOARD_LED_PORT                    (0)  // PA28
+#define BOARD_LED_PIN                     (28)
+
+#define BOARD_LEDRX_PORT                  (0) // PA00
+#define BOARD_LEDRX_PIN                   (0)
+
+#define BOARD_LEDTX_PORT                  (0) // PA01
+#define BOARD_LEDTX_PIN                   (1)
+
+#endif
+
 #endif // _BOARD_DEFINITIONS_H_