diff --git a/variants/mkr1000/variant.cpp b/variants/mkr1000/variant.cpp
index 18e37a352a1566b7fc3fcfa3e483eedf60cabf24..4a79a6a0aed9cd709aebf16a6b5e6da19c6021c3 100644
--- a/variants/mkr1000/variant.cpp
+++ b/variants/mkr1000/variant.cpp
@@ -18,32 +18,30 @@
 
 #include "variant.h"
 
-// TODO: FIX TIMERS
+const PinDescription g_APinDescription[] = {
 
-const PinDescription g_APinDescription[]=
-{
 /*
  +------------+------------------+--------+-----------------+--------+-----------------------+---------+---------+--------+--------+----------+----------+
  | Pin number |  MKR  Board pin  |  PIN   | Notes           | Peri.A |     Peripheral B      | Perip.C | Perip.D | Peri.E | Peri.F | Periph.G | Periph.H |
  |            |                  |        |                 |   EIC  | ADC |  AC | PTC | DAC | SERCOMx | SERCOMx |  TCCx  |  TCCx  |    COM   | AC/GLCK  |
  |            |                  |        |                 |(EXTINT)|(AIN)|(AIN)|     |     | (x/PAD) | (x/PAD) | (x/WO) | (x/WO) |          |          |
  +------------+------------------+--------+-----------------+--------+-----+-----+-----+-----+---------+---------+--------+--------+----------+----------+
- | 0          | D0               |  PA22  |                 |  *06   |     |     | X10 |     |   3/00  |   5/00  |* TC4/0 | TCC0/4 |          | GCLK_IO6 |
- | 1          | D1               |  PA23  |                 |  *07   |     |     | X11 |     |   3/01  |   5/01  |* TC4/1 | TCC0/5 | USB/SOF  | GCLK_IO7 |
- | 2          | D2               |  PA10  |                 |   10   | *18 |     | X02 |     |   0/02  |   2/02  |*TCC1/0 | TCC0/2 | I2S/SCK0 | GCLK_IO4 |
- | 3          | D3               |  PA11  |                 |   11   | *19 |     | X03 |     |   0/03  |   2/03  |*TCC1/1 | TCC0/3 | I2S/FS0  | GCLK_IO5 |
- | 4          | D4               |  PB10  |                 |   10   |     |     |     |     |         |   4/02  |* TC5/0 | TCC0/4 | I2S/MCK1 | GCLK_IO4 |
- | 5          | D5               |  PB11  |                 |   11   |     |     |     |     |         |   4/03  |* TC5/1 | TCC0/5 | I2S/SCK1 | GCLK_IO5 |
- | 6          | D6               |  PA20  |                 |  *04   |     |     | X08 |     |   5/02  |   3/02  |        |*TCC0/6 | I2S/SCK0 | GCLK_IO4 |
- | 7          | D7               |  PA21  |                 |  *05   |     |     | X09 |     |   5/03  |   3/03  |        |*TCC0/7 | I2S/FS0  | GCLK_IO5 |
+ | 00         | D0               |  PA22  |                 |  *06   |     |     | X10 |     |   3/00  |   5/00  |* TC4/0 | TCC0/4 |          | GCLK_IO6 |
+ | 01         | D1               |  PA23  |                 |  *07   |     |     | X11 |     |   3/01  |   5/01  |* TC4/1 | TCC0/5 | USB/SOF  | GCLK_IO7 |
+ | 02         | D2               |  PA10  |                 |   10   | *18 |     | X02 |     |   0/02  |   2/02  |*TCC1/0 | TCC0/2 | I2S/SCK0 | GCLK_IO4 |
+ | 03         | D3               |  PA11  |                 |   11   | *19 |     | X03 |     |   0/03  |   2/03  |*TCC1/1 | TCC0/3 | I2S/FS0  | GCLK_IO5 |
+ | 04         | D4               |  PB10  |                 |  *10   |     |     |     |     |         |   4/02  |* TC5/0 | TCC0/4 | I2S/MCK1 | GCLK_IO4 |
+ | 05         | D5               |  PB11  |                 |  *11   |     |     |     |     |         |   4/03  |* TC5/1 | TCC0/5 | I2S/SCK1 | GCLK_IO5 |
+ | 06         | D6               |  PA20  |                 |  *04   |     |     | X08 |     |   5/02  |   3/02  |        |*TCC0/6 | I2S/SCK0 | GCLK_IO4 |
+ | 07         | D7               |  PA21  |                 |  *05   |     |     | X09 |     |   5/03  |   3/03  |        |*TCC0/7 | I2S/FS0  | GCLK_IO5 |
  +------------+------------------+--------+-----------------+--------+-----+-----+-----+-----+---------+---------+--------+--------+----------+----------+
  */
   { PORTA, 22, PIO_DIGITAL, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER    ), No_ADC_Channel, PWM4_CH0,   TC4_CH0,      EXTERNAL_INT_6    },
-  { PORTA, 23, PIO_DIGITAL, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER    ), No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_7    },
-  { PORTA, 10, PIO_DIGITAL, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER    ), ADC_Channel18,  NOT_ON_PWM, TCC1_CH0,     EXTERNAL_INT_10   },
-  { PORTA, 11, PIO_DIGITAL, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER_ALT), ADC_Channel19,  NOT_ON_PWM, TCC0_CH3,     EXTERNAL_INT_11   },
-  { PORTB, 10, PIO_DIGITAL, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER    ), No_ADC_Channel, NOT_ON_PWM, TC5_CH0,      EXTERNAL_INT_10   },
-  { PORTB, 11, PIO_DIGITAL, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER_ALT), No_ADC_Channel, NOT_ON_PWM, TCC0_CH5,     EXTERNAL_INT_11   },
+  { PORTA, 23, PIO_DIGITAL, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER    ), No_ADC_Channel, PWM4_CH1,   TC4_CH1,      EXTERNAL_INT_7    },
+  { PORTA, 10, PIO_DIGITAL, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER    ), ADC_Channel18,  PWM1_CH0,   TCC1_CH0,     EXTERNAL_INT_NONE },
+  { PORTA, 11, PIO_DIGITAL, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER    ), ADC_Channel19,  PWM1_CH1,   TCC1_CH1,     EXTERNAL_INT_NONE },
+  { PORTB, 10, PIO_DIGITAL, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER    ), No_ADC_Channel, PWM5_CH0,   TC5_CH0,      EXTERNAL_INT_10   },
+  { PORTB, 11, PIO_DIGITAL, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER    ), No_ADC_Channel, PWM5_CH1,   TC5_CH1,      EXTERNAL_INT_11   },
   { PORTA, 20, PIO_DIGITAL, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER_ALT), No_ADC_Channel, PWM0_CH6,   TCC0_CH6,     EXTERNAL_INT_4    },
   { PORTA, 21, PIO_DIGITAL, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER_ALT), No_ADC_Channel, PWM0_CH7,   TCC0_CH7,     EXTERNAL_INT_5    },
 
@@ -53,20 +51,54 @@ const PinDescription g_APinDescription[]=
  |            |                  |        |                 |   EIC  | ADC |  AC | PTC | DAC | SERCOMx | SERCOMx |  TCCx  |  TCCx  |    COM   | AC/GLCK  |
  |            |                  |        |                 |(EXTINT)|(AIN)|(AIN)|     |     | (x/PAD) | (x/PAD) | (x/WO) | (x/WO) |          |          |
  +------------+------------------+--------+-----------------+--------+-----+-----+-----+-----+---------+---------+--------+--------+----------+----------+
- | 8          | A0 / DAC0        |  PA02  |                 |   02   | *00 |     | Y00 | OUT |         |         |        |        |          |          |
- | 9          | A1               |  PB02  |                 |  *02   | *10 |     | Y08 |     |         |   5/00  |        |        |          |          |
- | 10         | A2               |  PB03  |                 |  *03   | *11 |     | Y09 |     |         |   5/01  |        |        |          |          |
- | 11         | A3               |  PA04  |                 |   04   | *04 |  00 | Y02 |     |         |   0/00  |*TCC0/0 |        |          |          |
- | 12         | A4               |  PA05  |                 |   05   | *05 |  01 | Y03 |     |         |   0/01  |*TCC0/1 |        |          |          |
- | 13         | A5               |  PA06  |                 |   06   | *06 |  02 | Y04 |     |         |   0/02  | TCC1/0 |        |          |          |
- | 14         | A6               |  PA07  |                 |   07   | *07 |  03 | Y05 |     |         |   0/03  | TCC1/1 |        | I2S/SD0  |          |
+ |            |       SPI        |        |                 |        |     |     |     |     |         |         |        |        |          |          |
+ | 08         | MOSI             |  PA16  |                 |  *00   |     |     | X04 |     |  *1/00  |   3/00  |*TCC2/0 | TCC0/6 |          | GCLK_IO2 |
+ | 09         | SCK              |  PA17  |                 |  *01   |     |     | X05 |     |  *1/01  |   3/01  | TCC2/1 | TCC0/7 |          | GCLK_IO3 |
+ | 10         | MISO             |  PA19  |                 |   03   |     |     | X07 |     |  *1/03  |   3/03  |* TC3/1 | TCC0/3 | I2S/SD0  | AC/CMP1  |
+ +------------+------------------+--------+-----------------+--------------------+-----+-----+---------+---------+--------+--------+----------+----------+
+ |            |       Wire       |        |                 |        |     |     |     |     |         |         |        |        |          |          |
+ | 11         | SDA              |  PA08  |                 |   NMI  | *16 |     | X00 |     |  *0/00  |   2/00  | TCC0/0 | TCC1/2 | I2S/SD1  |          |
+ | 12         | SCL              |  PA09  |                 |   09   | *17 |     | X01 |     |  *0/01  |   2/01  | TCC0/1 | TCC1/3 | I2S/MCK0 |          |
+ +------------+------------------+--------+-----------------+--------+-----+-----+-----+-----+---------+---------+--------+--------+----------+----------+
+ |            |      Serial1     |        |                 |        |     |     |     |     |         |         |        |        |          |          |
+ | 13         | RX               |  PB23  |                 |   07   |     |     |     |     |         |  *5/03  |        |        |          | GCLK_IO1 |
+ | 14         | TX               |  PB22  |                 |   06   |     |     |     |     |         |  *5/02  |        |        |          | GCLK_IO0 |
+ +------------+------------------+--------+-----------------+--------+-----+-----+-----+-----+---------+---------+--------+--------+----------+----------+
+ */
+                                                                                                                                               // DIPO=3 DOPO=0
+  { PORTA, 16, PIO_SERCOM,  (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER    ), No_ADC_Channel, PWM2_CH0,   TCC2_CH0,     EXTERNAL_INT_0    }, // MOSI: SERCOM1/PAD[0]
+  { PORTA, 17, PIO_SERCOM,  (PIN_ATTR_DIGITAL                                ), No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // SCK:  SERCOM1/PAD[1]
+  { PORTA, 19, PIO_SERCOM,  (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER    ), No_ADC_Channel, PWM3_CH1,   TC3_CH1,      EXTERNAL_INT_NONE }, // MISO: SERCOM1/PAD[3]
+
+                                                                                                                                               // PINOUT=0
+  { PORTA,  8, PIO_SERCOM,  (PIN_ATTR_DIGITAL                                ), ADC_Channel16,  NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NMI  }, // SDA:  SERCOM0/PAD[0]
+  { PORTA,  9, PIO_SERCOM,  (PIN_ATTR_DIGITAL                                ), ADC_Channel17,  NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // SCL:  SERCOM0/PAD[1]
+
+                                                                                                                                               // RXPO=3 TXPO=1
+  { PORTB, 23, PIO_SERCOM_ALT, (PIN_ATTR_DIGITAL                             ), No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // RX:   SERCOM5/PAD[3]
+  { PORTB, 22, PIO_SERCOM_ALT, (PIN_ATTR_DIGITAL                             ), No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // TX:   SERCOM5/PAD[2]
+
+
+/*
+ +------------+------------------+--------+-----------------+--------+-----------------------+---------+---------+--------+--------+----------+----------+
+ | Pin number |  MKR  Board pin  |  PIN   | Notes           | Peri.A |     Peripheral B      | Perip.C | Perip.D | Peri.E | Peri.F | Periph.G | Periph.H |
+ |            |                  |        |                 |   EIC  | ADC |  AC | PTC | DAC | SERCOMx | SERCOMx |  TCCx  |  TCCx  |    COM   | AC/GLCK  |
+ |            |                  |        |                 |(EXTINT)|(AIN)|(AIN)|     |     | (x/PAD) | (x/PAD) | (x/WO) | (x/WO) |          |          |
+ +------------+------------------+--------+-----------------+--------+-----+-----+-----+-----+---------+---------+--------+--------+----------+----------+
+ | 15         | A0 / DAC0        |  PA02  |                 |   02   | *00 |     | Y00 | OUT |         |         |        |        |          |          |
+ | 16         | A1               |  PB02  |                 |  *02   | *10 |     | Y08 |     |         |   5/00  |        |        |          |          |
+ | 17         | A2               |  PB03  |                 |  *03   | *11 |     | Y09 |     |         |   5/01  |        |        |          |          |
+ | 18         | A3               |  PA04  |                 |   04   | *04 |  00 | Y02 |     |         |   0/00  |*TCC0/0 |        |          |          |
+ | 19         | A4               |  PA05  |                 |   05   | *05 |  01 | Y03 |     |         |   0/01  |*TCC0/1 |        |          |          |
+ | 20         | A5               |  PA06  |                 |   06   | *06 |  02 | Y04 |     |         |   0/02  | TCC1/0 |        |          |          |
+ | 21         | A6               |  PA07  |                 |   07   | *07 |  03 | Y05 |     |         |   0/03  | TCC1/1 |        | I2S/SD0  |          |
  +------------+------------------+--------+-----------------+--------+-----+-----+-----+-----+---------+---------+--------+--------+----------+----------+
  */
-  { PORTA,  2, PIO_ANALOG,  (PIN_ATTR_DIGITAL|PIN_ATTR_ANALOG                ), ADC_Channel0,   NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // DAC
-  { PORTB,  2, PIO_ANALOG,  (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER    ), ADC_Channel10,  NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_2    },
+  { PORTA,  2, PIO_ANALOG,  (PIN_ATTR_DIGITAL|PIN_ATTR_ANALOG /*DAC*/        ), ADC_Channel0,   NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE },
+  { PORTB,  2, PIO_ANALOG,  (PIN_ATTR_DIGITAL                                ), ADC_Channel10,  NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_2    },
   { PORTB,  3, PIO_ANALOG,  (PIN_ATTR_DIGITAL                                ), ADC_Channel11,  NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_3    },
-  { PORTA,  4, PIO_ANALOG,  (PIN_ATTR_DIGITAL                                ), ADC_Channel4,   NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE },
-  { PORTA,  5, PIO_ANALOG,  (PIN_ATTR_DIGITAL                                ), ADC_Channel5,   NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE },
+  { PORTA,  4, PIO_ANALOG,  (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER    ), ADC_Channel4,   PWM0_CH0,   TCC0_CH0,     EXTERNAL_INT_NONE },
+  { PORTA,  5, PIO_ANALOG,  (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER    ), ADC_Channel5,   PWM0_CH1,   TCC0_CH1,     EXTERNAL_INT_NONE },
   { PORTA,  6, PIO_ANALOG,  (PIN_ATTR_DIGITAL                                ), ADC_Channel6,   NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE },
   { PORTA,  7, PIO_ANALOG,  (PIN_ATTR_DIGITAL                                ), ADC_Channel7,   NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE },
 
@@ -76,33 +108,19 @@ const PinDescription g_APinDescription[]=
  |            |                  |        |                 |   EIC  | ADC |  AC | PTC | DAC | SERCOMx | SERCOMx |  TCCx  |  TCCx  |    COM   | AC/GLCK  |
  |            |                  |        |                 |(EXTINT)|(AIN)|(AIN)|     |     | (x/PAD) | (x/PAD) | (x/WO) | (x/WO) |          |          |
  +------------+------------------+--------+-----------------+--------+-----+-----+-----+-----+---------+---------+--------+--------+----------+----------+
- |            |       SPI        |        |                 |        |     |     |     |     |         |         |        |        |          |          |
- | 15         | MOSI             |  PA16  |                 |  *00   |     |     | X04 |     |   1/00  |   3/00  |*TCC2/0 | TCC0/6 |          | GCLK_IO2 |
- | 16         | SCK              |  PA17  |                 |  *01   |     |     | X05 |     |   1/01  |   3/01  | TCC2/1 | TCC0/7 |          | GCLK_IO3 |
- | 17         | MISO             |  PA19  |                 |   03   |     |     | X07 |     |   1/03  |   3/03  |* TC3/1 | TCC0/3 | I2S/SD0  | AC/CMP1  |
- +------------+------------------+--------+-----------------+--------------------+-----+-----+---------+---------+--------+--------+----------+----------+
- |            |       Wire       |        |                 |        |     |     |     |     |         |         |        |        |          |          |
- | 18         | SDA              |  PA08  |                 |   NMI  |  16 |     | X00 |     |   0/00  |   2/00  | TCC0/0 | TCC1/2 | I2S/SD1  |          |
- | 19         | DCL              |  PA09  |                 |   09   |  17 |     | X01 |     |   0/01  |   2/01  | TCC0/1 | TCC1/3 | I2S/MCK0 |          |
+ |            |       USB        |        |                 |        |     |     |     |     |         |         |        |        |          |          |
+ | 22         |                  |  PA24  | USB N           |   12   |     |     |     |     |   3/02  |   5/02  |  TC5/0 | TCC1/2 | USB/DM   |          |
+ | 23         |                  |  PA25  | USB P           |   13   |     |     |     |     |   3/03  |   5/03  |  TC5/1 | TCC1/3 | USB/DP   |          |
+ | 24         |                  |  PA18  | USB ID          |   02   |     |     | X06 |     |   1/02  |   3/02  |  TC3/0 | TCC0/2 |          | AC/CMP0  |
  +------------+------------------+--------+-----------------+--------+-----+-----+-----+-----+---------+---------+--------+--------+----------+----------+
- |            |      Serial1     |        |                 |        |     |     |     |     |         |         |        |        |          |          |
- | 20         | TX               |  PB22  |                 |   06   |     |     |     |     |         |   5/02  |        |        |          | GCLK_IO0 |
- | 21         | RX               |  PB23  |                 |   07   |     |     |     |     |         |   5/03  |        |        |          | GCLK_IO1 |
+ | 25         | AREF             |  PA03  |                 |   03   |  01 |     | Y01 |     |         |         |        |        |          |          |
  +------------+------------------+--------+-----------------+--------+-----+-----+-----+-----+---------+---------+--------+--------+----------+----------+
  */
-                                                                                                                                               // DIPO=3 DOPO=0
-  { PORTA, 16, PIO_SERCOM,  (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER    ), No_ADC_Channel, PWM2_CH0,   TCC2_CH0,     EXTERNAL_INT_0    }, // MOSI: SERCOM1/PAD[0]
-  { PORTA, 17, PIO_SERCOM,  (PIN_ATTR_NONE                                   ), No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // SCK:  SERCOM1/PAD[1]
-  { PORTA, 19, PIO_SERCOM,  (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER    ), No_ADC_Channel, PWM3_CH0,   TC3_CH0,      EXTERNAL_INT_NONE }, // MISO: SERCOM1/PAD[3]
-
-                                                                                                                                               // PINOUT=0
-  { PORTA,  8, PIO_SERCOM,  (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER    ), ADC_Channel16,  PWM0_CH0,   TCC0_CH0,     EXTERNAL_INT_NMI  }, // SDA:  SERCOM0/PAD[0]
-  { PORTA,  9, PIO_SERCOM,  (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER_ALT), ADC_Channel17,  PWM0_CH1,   TCC1_CH3,     EXTERNAL_INT_NONE }, // SCL:  SERCOM0/PAD[1]
-
-                                                                                                                                               // RXPO=3 TXPO=1
-  { PORTB, 22, PIO_SERCOM_ALT, (PIN_ATTR_NONE                                ), No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // TX:   SERCOM5/PAD[2]
-  { PORTB, 23, PIO_SERCOM_ALT, (PIN_ATTR_NONE                                ), No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // RX:   SERCOM5/PAD[3]
+  { 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
+  { PORTA, 18, PIO_DIGITAL, (PIN_ATTR_DIGITAL                                ), No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE },
 
+  { PORTA,  3, PIO_DIGITAL, (PIN_ATTR_DIGITAL                                ), No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // DAC/VREFP
 
 /*
  +------------+------------------+--------+-----------------+--------+-----------------------+---------+---------+--------+--------+----------+----------+
@@ -111,16 +129,20 @@ const PinDescription g_APinDescription[]=
  |            |                  |        |                 |(EXTINT)|(AIN)|(AIN)|     |     | (x/PAD) | (x/PAD) | (x/WO) | (x/WO) |          |          |
  +------------+------------------+--------+-----------------+--------+-----+-----+-----+-----+---------+---------+--------+--------+----------+----------+
  |            | ATWINC1501B SPI  |        |                 |        |     |     |     |     |         |         |        |        |          |          |
- | 22         |                  |  PA12  | WINC MOSI       |   12   |     |     |     |     |   2/00  |   4/00  | TCC2/0 | TCC0/6 |          | AC/CMP0  |
- | 23         |                  |  PA13  | WINC SCK        |   13   |     |     |     |     |   2/01  |   4/01  | TCC2/1 | TCC0/7 |          | AC/CMP1  |
- | 24         |                  |  PA14  | WINC SSN        |   14   |     |     |     |     |   2/02  |   4/02  |  TC3/0 | TCC0/4 |          | GCLK_IO0 |
- | 25         |                  |  PA15  | WINC MISO       |   15   |     |     |     |     |   2/03  |   4/03  |  TC3/1 | TCC0/5 |          | GCLK_IO1 |
+ | 26         |                  |  PA12  | WINC MOSI       |   12   |     |     |     |     |  *2/00  |   4/00  | TCC2/0 | TCC0/6 |          | AC/CMP0  |
+ | 27         |                  |  PA13  | WINC SCK        |   13   |     |     |     |     |  *2/01  |   4/01  | TCC2/1 | TCC0/7 |          | AC/CMP1  |
+ | 28         |                  |  PA14  | WINC SSN        |   14   |     |     |     |     |   2/02  |   4/02  |  TC3/0 | TCC0/4 |          | GCLK_IO0 |
+ | 29         |                  |  PA15  | WINC MISO       |   15   |     |     |     |     |  *2/03  |   4/03  |  TC3/1 | TCC0/5 |          | GCLK_IO1 |
  +------------+------------------+--------+-----------------+--------+-----+-----+-----+-----+---------+---------+--------+--------+----------+----------+
  |            | ATWINC1501B PINS |        |                 |        |     |     |     |     |         |         |        |        |          |          |
- | 26         |                  |  PA27  | WINC RESETN_WIFI|   15   |     |     |     |     |         |         |        |        |          | GCLK_IO0 |
- | 27         |                  |  PA28  | WINC CHIP_EN    |   08   |     |     |     |     |         |         |        |        |          | GCLK_IO0 |
- | 28         |                  |  PB08  | WINC WAKE       |   08   |  02 |     | Y14 |     |         |   4/00  |  TC4/0 |        |          |          |
- | 29         |                  |  PB09  | WINC IRQN       |  *09   |  03 |     | Y15 |     |         |   4/01  |  TC4/1 |        |          |          |
+ | 30         |                  |  PA27  | WINC RESETN_WIFI|   15   |     |     |     |     |         |         |        |        |          | GCLK_IO0 |
+ | 31         |                  |  PA28  | WINC CHIP_EN    |   08   |     |     |     |     |         |         |        |        |          | GCLK_IO0 |
+ | 32         |                  |  PB08  | WINC WAKE       |   08   |  02 |     | Y14 |     |         |   4/00  |  TC4/0 |        |          |          |
+ | 33         |                  |  PB09  | WINC IRQN       |  *09   |  03 |     | Y15 |     |         |   4/01  |  TC4/1 |        |          |          |
+ +------------+------------------+--------+-----------------+--------+-----+-----+-----+-----+---------+---------+--------+--------+----------+----------+
+ |            | 32768Hz Crystal  |        |                 |        |     |     |     |     |         |         |        |        |          |          |
+ | 34         |                  |  PA00  | XIN32           |   00   |     |     |     |     |         |   1/00  | TCC2/0 |        |          |          |
+ | 35         |                  |  PA01  | XOUT32          |   01   |     |     |     |     |         |   1/01  | TCC2/1 |        |          |          |
  +------------+------------------+--------+-----------------+--------+-----+-----+-----+-----+---------+---------+--------+--------+----------+----------+
  */
                                                                                                                                                // DIPO=3 DOPO=0
@@ -134,29 +156,8 @@ const PinDescription g_APinDescription[]=
   { PORTB,  8, PIO_DIGITAL,    (PIN_ATTR_NONE                                ), No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE },
   { PORTB,  9, PIO_DIGITAL,    (PIN_ATTR_NONE                                ), No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_9    },
 
-/*
- +------------+------------------+--------+-----------------+--------+-----------------------+---------+---------+--------+--------+----------+----------+
- | Pin number |  MKR  Board pin  |  PIN   | Notes           | Peri.A |     Peripheral B      | Perip.C | Perip.D | Peri.E | Peri.F | Periph.G | Periph.H |
- |            |                  |        |                 |   EIC  | ADC |  AC | PTC | DAC | SERCOMx | SERCOMx |  TCCx  |  TCCx  |    COM   | AC/GLCK  |
- |            |                  |        |                 |(EXTINT)|(AIN)|(AIN)|     |     | (x/PAD) | (x/PAD) | (x/WO) | (x/WO) |          |          |
- +------------+------------------+--------+-----------------+--------+-----+-----+-----+-----+---------+---------+--------+--------+----------+----------+
- |            |       USB        |        |                 |        |     |     |     |     |         |         |        |        |          |          |
- | 30         |                  |  PA24  | USB N           |   12   |     |     |     |     |   3/02  |   5/02  |  TC5/0 | TCC1/2 | USB/DM   |          |
- | 31         |                  |  PA25  | USB P           |   13   |     |     |     |     |   3/03  |   5/03  |  TC5/1 | TCC1/3 | USB/DP   |          |
- | 32         |                  |  PA18  | USB ID          |   02   |     |     | X06 |     |   1/02  |   3/02  |  TC3/0 | TCC0/2 |          | AC/CMP0  |
- +------------+------------------+--------+-----------------+--------+-----+-----+-----+-----+---------+---------+--------+--------+----------+----------+
- | 33         | AREF             |  PA03  |                 |   03   |  01 |     | Y01 |     |         |         |        |        |          |          |
- +------------+------------------+--------+-----------------+--------+-----+-----+-----+-----+---------+---------+--------+--------+----------+----------+
- |            | 32768Hz Crystal  |        |                 |        |     |     |     |     |         |         |        |        |          |          |
- |            |                  |  PA00  | XIN32           |   00   |     |     |     |     |         |   1/00  | TCC2/0 |        |          |          |
- |            |                  |  PA01  | XOUT32          |   01   |     |     |     |     |         |   1/01  | TCC2/1 |        |          |          |
- +------------+------------------+--------+-----------------+--------+-----+-----+-----+-----+---------+---------+--------+--------+----------+----------+
- */
-  { 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
-  { PORTA, 18, PIO_DIGITAL, (PIN_ATTR_NONE                                   ), No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE },
-
-  { PORTA,  3, PIO_DIGITAL, (PIN_ATTR_NONE                                   ), No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // DAC/VREFP
+  { PORTA,  0, PIO_DIGITAL,    (PIN_ATTR_NONE                                ), No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE },
+  { PORTA,  1, PIO_DIGITAL,    (PIN_ATTR_NONE                                ), No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE },
 };
 
 const void* g_apTCInstances[TCC_INST_NUM + TC_INST_NUM]={ TCC0, TCC1, TCC2, TC3, TC4, TC5 };
diff --git a/variants/mkr1000/variant.h b/variants/mkr1000/variant.h
index 8f042d588316110f738af1649eb3efc8e41438a7..cda39ec36d8713d58a513c6ab8270d5de86c4c5f 100644
--- a/variants/mkr1000/variant.h
+++ b/variants/mkr1000/variant.h
@@ -41,8 +41,8 @@
 
 // Number of pins defined in PinDescription array
 #define PINS_COUNT           (26u)
-#define NUM_DIGITAL_PINS     (14u)
-#define NUM_ANALOG_INPUTS    (6u)
+#define NUM_DIGITAL_PINS     (15u)
+#define NUM_ANALOG_INPUTS    (7u)
 #define NUM_ANALOG_OUTPUTS   (1u)
 
 #define digitalPinToPort(P)        (&(PORT->Group[g_APinDescription[P].ulPort]))
@@ -66,19 +66,18 @@
 
 // LEDs
 // ----
-#define PIN_LED              (6u)
-#define PIN_LED2             (7u)
+#define PIN_LED              (7u)
 #define LED_BUILTIN          PIN_LED
 
 // Analog pins
 // -----------
-#define PIN_A0               (8u)
-#define PIN_A1               (9u)
-#define PIN_A2               (10u)
-#define PIN_A3               (11u)
-#define PIN_A4               (12u)
-#define PIN_A5               (13u)
-#define PIN_A6               (14u)
+#define PIN_A0               (15u)
+#define PIN_A1               (16u)
+#define PIN_A2               (17u)
+#define PIN_A3               (18u)
+#define PIN_A4               (19u)
+#define PIN_A5               (20u)
+#define PIN_A6               (21u)
 static const uint8_t A0  = PIN_A0;
 static const uint8_t A1  = PIN_A1;
 static const uint8_t A2  = PIN_A2;
@@ -93,10 +92,10 @@ static const uint8_t A6  = PIN_A6;
 #define SPI_INTERFACES_COUNT 2
 
 // SPI
-#define PIN_SPI_MISO         (17u)
-#define PIN_SPI_MOSI         (15u)
-#define PIN_SPI_SCK          (16u)
-#define PIN_SPI_SS           (32u)
+#define PIN_SPI_MISO         (10u)
+#define PIN_SPI_MOSI         (8u)
+#define PIN_SPI_SCK          (9u)
+#define PIN_SPI_SS           (24u)
 #define PERIPH_SPI           sercom1
 #define PAD_SPI_TX           SPI_PAD_0_SCK_1
 #define PAD_SPI_RX           SERCOM_RX_PAD_3
@@ -106,14 +105,14 @@ static const uint8_t MISO = PIN_SPI_MISO;
 static const uint8_t SCK  = PIN_SPI_SCK;
 
 // SPI1: Connected to WINC1501B
-#define PIN_SPI1_MISO         (25u)
-#define PIN_SPI1_MOSI         (22u)
-#define PIN_SPI1_SCK          (23u)
-#define PIN_SPI1_SS           (24u)
+#define PIN_SPI1_MISO         (29u)
+#define PIN_SPI1_MOSI         (26u)
+#define PIN_SPI1_SCK          (27u)
+#define PIN_SPI1_SS           (28u)
 #define PERIPH_SPI1           sercom2
 #define PAD_SPI1_TX           SPI_PAD_0_SCK_1
 #define PAD_SPI1_RX           SERCOM_RX_PAD_3
-static const uint8_t SS1   = PIN_SPI1_SS;   // SPI Slave SS not used. Set here only for reference.
+static const uint8_t SS1   = PIN_SPI1_SS;
 static const uint8_t MOSI1 = PIN_SPI1_MOSI;
 static const uint8_t MISO1 = PIN_SPI1_MISO;
 static const uint8_t SCK1  = PIN_SPI1_SCK;
@@ -123,16 +122,16 @@ static const uint8_t SCK1  = PIN_SPI1_SCK;
 #define WIRE_INTERFACES_COUNT 1
 
 // Wire
-#define PIN_WIRE_SDA        (18u)
-#define PIN_WIRE_SCL        (19u)
+#define PIN_WIRE_SDA        (11u)
+#define PIN_WIRE_SCL        (12u)
 #define PERIPH_WIRE         sercom0
 #define WIRE_IT_HANDLER     SERCOM0_Handler
 
 // USB
 // ---
-#define PIN_USB_HOST_ENABLE (32ul)
-#define PIN_USB_DM          (30ul)
-#define PIN_USB_DP          (31ul)
+#define PIN_USB_DM          (22ul)
+#define PIN_USB_DP          (23ul)
+#define PIN_USB_HOST_ENABLE (24ul)
 
 //#ifdef __cplusplus
 //}
@@ -140,10 +139,11 @@ static const uint8_t SCK1  = PIN_SPI1_SCK;
 
 // Needed for WINC1501B (WiFi101) library
 // --------------------------------------
-#define WINC1501_RESET_PIN  (26u)
-#define WINC1501_INTN_PIN   (29u)
-#define WINC1501_SPI        SPI1
-#define WINC1501_SPI_CS_PIN PIN_SPI1_SS
+#define WINC1501_RESET_PIN   (30u)
+#define WINC1501_CHIP_EN_PIN (31u)
+#define WINC1501_INTN_PIN    (33u)
+#define WINC1501_SPI         SPI1
+#define WINC1501_SPI_CS_PIN  PIN_SPI1_SS
 
 /*----------------------------------------------------------------------------
  *        Arduino objects - C++ only
@@ -163,8 +163,8 @@ extern SERCOM sercom5;
 
 // Serial1
 extern Uart Serial1;
-#define PIN_SERIAL1_RX       (20ul)
-#define PIN_SERIAL1_TX       (21ul)
+#define PIN_SERIAL1_RX       (13ul)
+#define PIN_SERIAL1_TX       (14ul)
 #define PAD_SERIAL1_TX       (UART_TX_PAD_2)
 #define PAD_SERIAL1_RX       (SERCOM_RX_PAD_3)
 #endif
@@ -189,6 +189,6 @@ extern Uart Serial1;
 #define SERIAL_PORT_HARDWARE        Serial1
 #define SERIAL_PORT_HARDWARE_OPEN   Serial1
 
-// Alisa Serial to SerialUSB, it's the most used serial port
+// Alias Serial to SerialUSB
 #define Serial                      SerialUSB