diff --git a/variants/arduino_zero/variant.cpp b/variants/arduino_zero/variant.cpp
index 9c95365ad9382cd80530cae9b1ead3e4af80f4e6..d63648e9742a180a92cf9ef680a787951d58f41c 100644
--- a/variants/arduino_zero/variant.cpp
+++ b/variants/arduino_zero/variant.cpp
@@ -40,10 +40,10 @@
* | 12 | ~12 | PA19 | | EIC/EXTINT[3] PTC/X[7] SERCOM1/PAD[3] SERCOM3/PAD[3] TC3/WO[1] *TCC0/WO[3]
* | 13 | ~13 | PA17 | LED | EIC/EXTINT[1] PTC/X[5] SERCOM1/PAD[1] SERCOM3/PAD[1] *TCC2/WO[1] TCC0/WO[7]
* +------------+------------------+--------+-----------------+------------------------------
- * | |Wire | | |
+ * | | | | |
* +------------+------------------+--------+-----------------+------------------------------
- * | 14 | GND | | |
- * | 15 | AREF | PA03 | | *DAC/VREFP PTC/Y[1]
+ * | | GND | | |
+ * | 42 | AREF | PA03 | | *DAC/VREFP PTC/Y[1]
* +------------+------------------+--------+-----------------+------------------------------
* | | Wire | | |
* +------------+------------------+--------+-----------------+------------------------------
@@ -53,49 +53,49 @@
* | |SPI (Legacy ICSP) | | |
* +------------+------------------+--------+-----------------+------------------------------
* | 18 | 1 | PA12 | MISO | EIC/EXTINT[12] SERCOM2/PAD[0] *SERCOM4/PAD[0] TCC2/WO[0] TCC0/WO[6]
- * | 19 | 2 | | 5V0 |
+ * | | 2 | | 5V0 |
* | 20 | 3 | PB11 | SCK | EIC/EXTINT[11] *SERCOM4/PAD[3] TC5/WO[1] TCC0/WO[5]
* | 21 | 4 | PB10 | MOSI | EIC/EXTINT[10] *SERCOM4/PAD[2] TC5/WO[0] TCC0/WO[4]
- * | 22 | 5 | | RESET |
- * | 23 | 6 | | GND |
+ * | | 5 | | RESET |
+ * | | 6 | | GND |
* +------------+------------------+--------+-----------------+------------------------------
* | | Analog Connector | | |
* +------------+------------------+--------+-----------------+------------------------------
- * | 24 | A0 | PA02 | | EIC/EXTINT[2] *ADC/AIN[0] PTC/Y[0] DAC/VOUT
- * | 25 | A1 | PB08 | | EIC/EXTINT[8] *ADC/AIN[2] PTC/Y[14] SERCOM4/PAD[0] TC4/WO[0]
- * | 26 | A2 | PB09 | | EIC/EXTINT[9] *ADC/AIN[3] PTC/Y[15] SERCOM4/PAD[1] TC4/WO[1]
- * | 27 | A3 | PA04 | | EIC/EXTINT[4] *ADC/AIN[4] AC/AIN[0] PTC/Y[2] SERCOM0/PAD[0] TCC0/WO[0]
- * | 28 | A4 | PA05 | | EIC/EXTINT[5] *ADC/AIN[5] AC/AIN[1] PTC/Y[5] SERCOM0/PAD[1] TCC0/WO[1]
- * | 29 | A5 | PB02 | | EIC/EXTINT[2] *ADC/AIN[10] PTC/Y[8] SERCOM5/PAD[0]
+ * | 14 | A0 | PA02 | | EIC/EXTINT[2] *ADC/AIN[0] PTC/Y[0] DAC/VOUT
+ * | 15 | A1 | PB08 | | EIC/EXTINT[8] *ADC/AIN[2] PTC/Y[14] SERCOM4/PAD[0] TC4/WO[0]
+ * | 16 | A2 | PB09 | | EIC/EXTINT[9] *ADC/AIN[3] PTC/Y[15] SERCOM4/PAD[1] TC4/WO[1]
+ * | 17 | A3 | PA04 | | EIC/EXTINT[4] *ADC/AIN[4] AC/AIN[0] PTC/Y[2] SERCOM0/PAD[0] TCC0/WO[0]
+ * | 18 | A4 | PA05 | | EIC/EXTINT[5] *ADC/AIN[5] AC/AIN[1] PTC/Y[5] SERCOM0/PAD[1] TCC0/WO[1]
+ * | 19 | A5 | PB02 | | EIC/EXTINT[2] *ADC/AIN[10] PTC/Y[8] SERCOM5/PAD[0]
* +------------+------------------+--------+-----------------+------------------------------
* | | LEDs | | |
* +------------+------------------+--------+-----------------+------------------------------
- * | 30 | | PB03 | RX |
- * | 31 | | PA27 | TX |
+ * | 25 | | PB03 | RX |
+ * | 26 | | PA27 | TX |
* +------------+------------------+--------+-----------------+------------------------------
* | | USB | | |
* +------------+------------------+--------+-----------------+------------------------------
- * | 32 | | PA28 | USB HOST ENABLE |
- * | 33 | | PA24 | USB_NEGATIVE | USB/DM
- * | 34 | | PA25 | USB_POSITIVE | USB/DP
+ * | 27 | | PA28 | USB_HOST_ENABLE |
+ * | 28 | | PA24 | USB_NEGATIVE | USB/DM
+ * | 29 | | PA25 | USB_POSITIVE | USB/DP
* +------------+------------------+--------+-----------------+------------------------------
* | | EDBG | | |
* +------------+------------------+--------+-----------------+------------------------------
- * | 35 | | PB22 | EDBG_UART TX | SERCOM5/PAD[2]
- * | 36 | | PB23 | EDBG_UART RX | SERCOM5/PAD[3]
+ * | 30 | | PB22 | EDBG_UART TX | SERCOM5/PAD[2]
+ * | 31 | | PB23 | EDBG_UART RX | SERCOM5/PAD[3]
* +------------+------------------+--------+-----------------+------------------------------
- * | 37 | | PA22 | EDBG_SDA | SERCOM3/PAD[0]
- * | 38 | | PA23 | EDBG_SCL | SERCOM3/PAD[1]
+ * | 32 | | PA22 | EDBG_SDA | SERCOM3/PAD[0]
+ * | 33 | | PA23 | EDBG_SCL | SERCOM3/PAD[1]
* +------------+------------------+--------+-----------------+------------------------------
- * | 39 | | PA19 | EDBG_MISO | SERCOM1/PAD[3]
- * | 40 | | PA16 | EDBG_MOSI | SERCOM1/PAD[0]
- * | 41 | | PA18 | EDBG_SS | SERCOM1/PAD[2]
- * | 42 | | PA17 | EDBG_SCK | SERCOM1/PAD[1]
+ * | 34 | | PA19 | EDBG_MISO | SERCOM1/PAD[3]
+ * | 35 | | PA16 | EDBG_MOSI | SERCOM1/PAD[0]
+ * | 36 | | PA18 | EDBG_SS | SERCOM1/PAD[2]
+ * | 37 | | PA17 | EDBG_SCK | SERCOM1/PAD[1]
* +------------+------------------+--------+-----------------+------------------------------
- * | 43 | | PA13 | EDBG_GPIO0 | EIC/EXTINT[13] *TCC2/WO[1] TCC0/WO[7]
- * | 44 | | PA21 | EDBG_GPIO1 | Pin 7
- * | 45 | | PA06 | EDBG_GPIO2 | Pin 8
- * | 46 | | PA07 | EDBG_GPIO3 | Pin 9
+ * | 38 | | PA13 | EDBG_GPIO0 | EIC/EXTINT[13] *TCC2/WO[1] TCC0/WO[7]
+ * | 39 | | PA21 | EDBG_GPIO1 | Pin 7
+ * | 40 | | PA06 | EDBG_GPIO2 | Pin 8
+ * | 41 | | PA07 | EDBG_GPIO3 | Pin 9
* +------------+------------------+--------+-----------------+------------------------------
* | |32.768KHz Crystal | | |
* +------------+------------------+--------+-----------------+------------------------------
@@ -163,7 +163,7 @@ const PinDescription g_APinDescription[]=
// 27..29 - USB
// --------------------
- { PORTA, 28, PIO_COM, PIN_ATTR_NONE, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // USB/SOF
+ { PORTA, 28, PIO_COM, PIN_ATTR_NONE, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // USB Host enable
{ PORTA, 24, PIO_COM, PIN_ATTR_NONE, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // USB/DM
{ PORTA, 25, PIO_COM, PIN_ATTR_NONE, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // USB/DP
diff --git a/variants/arduino_zero/variant.h b/variants/arduino_zero/variant.h
index d06622417b96fceb4db477def4d9006cd3733bf7..dbab9e09a5406412d11af6cdb6f7ee68eebeae58 100644
--- a/variants/arduino_zero/variant.h
+++ b/variants/arduino_zero/variant.h
@@ -168,6 +168,13 @@ static const uint8_t SCK = PIN_SPI_SCK ;
#define TC_RESOLUTION 8
*/
+/*
+ * USB
+ */
+#define PIN_USB_HOST_ENABLE (27ul)
+#define PIN_USB_DM (28ul)
+#define PIN_USB_DP (29ul)
+
#ifdef __cplusplus
}
#endif