-// Pin Arduino
-// 0 B16 RXD
-// 1 B17 TXD
-// 2 D0
-// 3 A12 FTM1_CH0
-// 4 A13 FTM1_CH1
-// 5 D7 FTM0_CH7 OC0B/T1
-// 6 D4 FTM0_CH4 OC0A
-// 7 D2
-// 8 D3 ICP1
-// 9 C3 FTM0_CH2 OC1A
-// 10 C4 FTM0_CH3 SS/OC1B
-// 11 C6 MOSI/OC2A
-// 12 C7 MISO
-// 13 C5 SCK
-// 14 D1
-// 15 C0
-// 16 B0 (FTM1_CH0)
-// 17 B1 (FTM1_CH1)
-// 18 B3 SDA
-// 19 B2 SCL
-// 20 D5 FTM0_CH5
-// 21 D6 FTM0_CH6
-// 22 C1 FTM0_CH0
-// 23 C2 FTM0_CH1
-// 24 A5 (FTM0_CH2)
-// 25 B19
-// 26 E1
-// 27 C9
-// 28 C8
-// 29 C10
-// 30 C11
-// 31 E0
-// 32 B18
-// 33 A4 (FTM0_CH1)
-// (34) analog only
-// (35) analog only
-// (36) analog only
-// (37) analog only
+// Pin Name Function Hardware
+// ----------------------------------
+// 0 PTB16 RX0
+// 1 PTB17 TX0
+// 2 PTD0 PCS0
+// 3 PTA12 FTM1_CH0 PWM (CAN TX - Teensy 3.1) I2S_TXD0
+// 4 PTA13 FTM1_CH1 PWM (CAN RX - Teensy 3.1) I2S_TX_FS
+// 5 PTD7 FTM0_CH7 PWM
+// 6 PTD4 FTM0_CH4 PWM PCS1
+// 7 PTD2 RX2 SOUT0
+// 8 PTD3 TX2 SIN0
+// 9 PTC3 FTM0_CH2 RX1 PWM PCS1 I2S_TX_BCLK
+// 10 PTC4 FTM0_CH3 TX1 PWM PCS0
+// 11 PTC6 SOUT0 I2S_RX_BCLK I2S_MCLK
+// 12 PTC7 SIN0 I2S_RX_FS
+// 13 PTC5 LED SCK0 I2S_RXD0
+// 14 PTD1 SCK0
+// 15 PTC0 PCS4 I2S_TXD1
+// 16 PTB0 (FTM1_CH0) SCL0
+// 17 PTB1 (FTM1_CH1) SDA0
+// 18 PTB3 SDA0
+// 19 PTB2 SCL0
+// 20 PTD5 FTM0_CH5 PWM PCS2
+// 21 PTD6 FTM0_CH6 PWM PCS3
+// 22 PTC1 FTM0_CH0 PWM PCS3 I2S_TXD0
+// 23 PTC2 FTM0_CH1 PWM PCS2 I2S_TX_FS
+// 24 PTA5 (FTM0_CH2) I2S_TX_BCLK
+// 25 PTB19 (PWM - Teensy 3.1) I2S_TX_FS
+// 26 PTE1 RX1 SCL1
+// 27 PTC9 I2S_RX_BCLK
+// 28 PTC8 I2S_MCLK
+// 29 PTC10 (SCL1 - Teensy 3.1) I2S_RX_FS
+// 30 PTC11 (SDA1 - Teensy 3.1) I2S_RXD1
+// 31 PTE0 TX1 SDA1
+// 32 PTB18 (PWM - Teensy 3.1) I2S_TX_BCLK
+// 33 PTA4 (FTM0_CH1)
+// 34 analog only
+// 35 analog only
+// 36 analog only
+// 37 analog only
+// 38 Temp Sensor
+// 39 Vref
+// 40 DAC/A14
// not available to user:
-// A0 FTM0_CH5 SWD Clock
-// A1 FTM0_CH6 USB ID
-// A2 FTM0_CH7 SWD Trace
-// A3 FTM0_CH0 SWD Data
+// A0 FTM0_CH5 SWD Clock
+// A1 FTM0_CH6 USB ID
+// A2 FTM0_CH7 SWD Trace
+// A3 FTM0_CH0 SWD Data
+
+// Analog Channel Channel
+// Pin Pin Name ADC0 ADC1
+// -----------------------------------------
+// A0 14 D1 5 (AD5b)
+// A1 15 C0 14 (AD14)
+// A2 16 B0 8 (AD8) 8 (AD8)
+// A3 17 B1 9 (AD9) 9 (AD9)
+// A4 18 B3 13 (AD13)
+// A5 19 B2 12 (AD12)
+// A6 20 D5 6 (AD6b)
+// A7 21 D6 7 (AD7b)
+// A8 22 C1 15 (AD15)
+// A9 23 C2 4 (AD4b)
+// A10 0 (DAD0) 3 (DAD3)
+// A11 19 (AD19)
+// A12 3 (DAD3) 0 (DAD0)
+// A13 19 (AD19)
+// A14 DAC 23 (AD23) (Teensy 3.1 Only)
+// A15 26 E1 5 (AD5a)
+// A16 27 C9 5 (AD5b)
+// A17 28 C8 4 (AD4b)
+// A18 29 C10 6 (AD6b)
+// A19 30 C11 7 (AD7b)
+// A20 31 E0 4 (AD4a)