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Merged
merged 2 commits into from
Jul 11, 2017
Merged

Two fixes to Adafruit Circuit Playground Express #241

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1a08091
fix for crystal-less startup stability
ladyada Jun 23, 2017
7527091
match variant to shipping rev G hardware
ladyada Jun 23, 2017
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28 changes: 18 additions & 10 deletions cores/arduino/startup.c
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Original file line number Diff line number Diff line change
Expand Up @@ -139,7 +139,7 @@ void SystemInit( void )
/* DFLL Configuration in Closed Loop mode, cf product datasheet chapter 15.6.7.1 - Closed-Loop Operation */

/* Remove the OnDemand mode, Bug http://avr32.icgroup.norway.atmel.com/bugzilla/show_bug.cgi?id=9905 */
SYSCTRL->DFLLCTRL.bit.ONDEMAND = 0 ;
SYSCTRL->DFLLCTRL.reg = SYSCTRL_DFLLCTRL_ENABLE;

while ( (SYSCTRL->PCLKSR.reg & SYSCTRL_PCLKSR_DFLLRDY) == 0 )
{
Expand All @@ -158,27 +158,35 @@ void SystemInit( void )
#if defined(CRYSTALLESS)

#define NVM_SW_CALIB_DFLL48M_COARSE_VAL 58
#define NVM_SW_CALIB_DFLL48M_FINE_VAL 64

// Turn on DFLL
uint32_t coarse =( *((uint32_t *)(NVMCTRL_OTP4) + (NVM_SW_CALIB_DFLL48M_COARSE_VAL / 32)) >> (NVM_SW_CALIB_DFLL48M_COARSE_VAL % 32) )
& ((1 << 6) - 1);
if (coarse == 0x3f) {
coarse = 0x1f;
}
uint32_t fine =( *((uint32_t *)(NVMCTRL_OTP4) + (NVM_SW_CALIB_DFLL48M_FINE_VAL / 32)) >> (NVM_SW_CALIB_DFLL48M_FINE_VAL % 32) )
& ((1 << 10) - 1);
if (fine == 0x3ff) {
fine = 0x1ff;
}
// TODO(tannewt): Load this value from memory we've written previously. There
// isn't a value from the Atmel factory.
uint32_t fine = 0x1ff;

SYSCTRL->DFLLVAL.bit.COARSE = coarse;
SYSCTRL->DFLLVAL.bit.FINE = fine;
/* Write full configuration to DFLL control register */
SYSCTRL->DFLLCTRL.reg = SYSCTRL_DFLLCTRL_USBCRM | /* USB correction */
SYSCTRL->DFLLMUL.reg = SYSCTRL_DFLLMUL_CSTEP( 0x1f / 4 ) | // Coarse step is 31, half of the max value
SYSCTRL_DFLLMUL_FSTEP( 10 ) |
SYSCTRL_DFLLMUL_MUL( (48000) ) ;

SYSCTRL->DFLLCTRL.reg = 0;

while ( (SYSCTRL->PCLKSR.reg & SYSCTRL_PCLKSR_DFLLRDY) == 0 )
{
/* Wait for synchronization */
}

SYSCTRL->DFLLCTRL.reg = SYSCTRL_DFLLCTRL_MODE |
SYSCTRL_DFLLCTRL_CCDIS |
SYSCTRL_DFLLCTRL_WAITLOCK |
SYSCTRL_DFLLCTRL_QLDIS ; /* Disable Quick lock */
SYSCTRL_DFLLCTRL_USBCRM | /* USB correction */
SYSCTRL_DFLLCTRL_BPLCKC;

while ( (SYSCTRL->PCLKSR.reg & SYSCTRL_PCLKSR_DFLLRDY) == 0 )
{
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139 changes: 52 additions & 87 deletions variants/circuitplay/variant.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -114,109 +114,74 @@ const PinDescription g_APinDescription[]=
// 0..13 - Digital pins
// ----------------------
// 0/1 - SERCOM/UART (Serial1)
{ PORTA, 11, PIO_SERCOM, (PIN_ATTR_DIGITAL), No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_11 }, // RX: SERCOM0/PAD[3]
{ PORTA, 10, PIO_SERCOM, (PIN_ATTR_DIGITAL), No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_10 }, // TX: SERCOM0/PAD[2]
{ PORTB, 9, PIO_SERCOM_ALT, (PIN_ATTR_PWM|PIN_ATTR_TIMER), ADC_Channel3, PWM4_CH1, TC4_CH1, EXTERNAL_INT_9 }, // GPIO 0 / A6 / UART RX
{ PORTB, 8, PIO_SERCOM_ALT, (PIN_ATTR_PWM|PIN_ATTR_TIMER), ADC_Channel2, PWM4_CH0, TC4_CH0, EXTERNAL_INT_8 }, // GPIO 1 / A7 / UART TX

// 2..12
// Digital Low
{ PORTA, 14, PIO_DIGITAL, (PIN_ATTR_DIGITAL), No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_14 },
{ PORTA, 9, PIO_ANALOG, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER|PIN_ATTR_ANALOG), ADC_Channel17, PWM0_CH1, TCC0_CH1, EXTERNAL_INT_9 }, // TCC0/WO[1]
{ PORTA, 8, PIO_ANALOG, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER|PIN_ATTR_ANALOG), ADC_Channel16, PWM0_CH0, TCC0_CH0, EXTERNAL_INT_NMI }, // TCC0/WO[0]
{ PORTA, 15, PIO_TIMER, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER), No_ADC_Channel, PWM3_CH1, TC3_CH1, EXTERNAL_INT_15 }, // TC3/WO[1]
{ PORTA, 20, PIO_TIMER_ALT, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER_ALT), No_ADC_Channel, PWM0_CH6, TCC0_CH6, EXTERNAL_INT_4 }, // TCC0/WO[6]
{ PORTA, 21, PIO_DIGITAL, (PIN_ATTR_DIGITAL), No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_5 },
{ PORTB, 2, PIO_SERCOM_ALT, 0, ADC_Channel10, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_2 }, // GPIO D2 / A5 / SDA
{ PORTB, 3, PIO_SERCOM_ALT, PIN_ATTR_DIGITAL, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_3 }, // GPIO D3 / A4 / SCL
{ PORTA, 28, PIO_COM, PIN_ATTR_NONE, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // GPIO D4 / Left Button
{ PORTA, 14, PIO_DIGITAL, (PIN_ATTR_DIGITAL), No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_14 }, // GPIO D5 / Right button
{ PORTA, 5, PIO_TIMER, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER), ADC_Channel5, PWM0_CH1, TCC0_CH1, EXTERNAL_INT_5 }, // GPIO D6 / A1
{ PORTA, 15, PIO_TIMER, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER), No_ADC_Channel, PWM3_CH1, TC3_CH1, EXTERNAL_INT_15 }, // GPIO D7 / Slide Switch

// Digital High
{ PORTA, 6, PIO_TIMER, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER|PIN_ATTR_ANALOG), ADC_Channel6, PWM1_CH0, TCC1_CH0, EXTERNAL_INT_6 }, // TCC1/WO[0]
{ PORTA, 7, PIO_TIMER, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER|PIN_ATTR_ANALOG), ADC_Channel7, PWM1_CH1, TCC1_CH1, EXTERNAL_INT_7 }, // TCC1/WO[1]
{ PORTA, 18, PIO_SERCOM_ALT, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER), No_ADC_Channel, PWM3_CH0, TC3_CH0, EXTERNAL_INT_2 }, // TC3/WO[0]
{ PORTA, 16, PIO_SERCOM_ALT, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER), No_ADC_Channel, PWM2_CH0, TCC2_CH0, EXTERNAL_INT_0 }, // TCC2/WO[0]
{ PORTA, 19, PIO_SERCOM_ALT, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER_ALT), No_ADC_Channel, PWM0_CH3, TCC0_CH3, EXTERNAL_INT_3 }, // TCC0/WO[3]

{ PORTB, 23, PIO_DIGITAL, PIN_ATTR_NONE, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // GPIO D8 / NeoPixels
{ PORTA, 6, PIO_TIMER, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER), ADC_Channel6, PWM1_CH0, TCC1_CH0, EXTERNAL_INT_6 }, // GPIO D9 / A2
{ PORTA, 7, PIO_TIMER, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER), ADC_Channel7, PWM1_CH1, TCC1_CH1, EXTERNAL_INT_7 }, // GPIO D10 / A3
{ PORTA, 30, PIO_DIGITAL, PIN_ATTR_DIGITAL, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // GPIO D11 / Speaker Shutdown
{ PORTA, 2, PIO_DIGITAL, (PIN_ATTR_DIGITAL|PIN_ATTR_ANALOG), ADC_Channel0, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_2 }, // GPIO D12 / VOut / A0
// 13 (LED)
{ PORTA, 17, PIO_TIMER, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER), No_ADC_Channel, PWM2_CH1, TCC2_CH1, EXTERNAL_INT_1 }, // TCC2/WO[1]
{ PORTA, 17, PIO_TIMER, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER), No_ADC_Channel, PWM2_CH1, TCC2_CH1, EXTERNAL_INT_1 }, // GPIO D13 / Red LED

// 14..19 - Analog pins
// 14..24 - Analog pins
// --------------------
{ PORTA, 2, PIO_ANALOG, PIN_ATTR_ANALOG, ADC_Channel0, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_2 }, // ADC/AIN[0]
{ PORTB, 8, PIO_SERCOM_ALT, (PIN_ATTR_PWM|PIN_ATTR_TIMER), ADC_Channel2, PWM4_CH0, TC4_CH0, EXTERNAL_INT_8 }, // ADC/AIN[2] (UART TX)
{ PORTB, 9, PIO_SERCOM_ALT, (PIN_ATTR_PWM|PIN_ATTR_TIMER), ADC_Channel3, PWM4_CH1, TC4_CH1, EXTERNAL_INT_9 }, // ADC/AIN[3] (UART RX)
{ PORTA, 4, PIO_ANALOG, 0, ADC_Channel4, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_4 }, // ADC/AIN[4]
{ PORTA, 5, PIO_ANALOG, 0, ADC_Channel5, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_5 }, // ADC/AIN[5]
{ PORTB, 2, PIO_SERCOM_ALT, 0, ADC_Channel10, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_2 }, // ADC/AIN[10] & I2C (SDA)

// A6: D20 / D0
{ PORTA, 11, PIO_ANALOG, (PIN_ATTR_DIGITAL), ADC_Channel19, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_11 },
// A7: D21 / D1
{ PORTA, 10, PIO_ANALOG, (PIN_ATTR_DIGITAL), ADC_Channel18, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_10 },

// A8: D22 / D8
{ PORTA, 6, PIO_TIMER, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER|PIN_ATTR_ANALOG), ADC_Channel6, PWM1_CH0, TCC1_CH0, EXTERNAL_INT_6 }, // TCC1/WO[0]
// A9: D23 / D9
{ PORTA, 7, PIO_TIMER, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER|PIN_ATTR_ANALOG), ADC_Channel7, PWM1_CH1, TCC1_CH1, EXTERNAL_INT_7 }, // TCC1/WO[1]

// A10: D24 / D3
{ PORTA, 9, PIO_ANALOG, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER|PIN_ATTR_ANALOG), ADC_Channel17, PWM0_CH1, TCC0_CH1, EXTERNAL_INT_9 }, // TCC0/WO[1]
// A11: D25 / D4
{ PORTA, 8, PIO_ANALOG, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER|PIN_ATTR_ANALOG), ADC_Channel16, PWM0_CH0, TCC0_CH0, EXTERNAL_INT_NMI }, // TCC0/WO[0]


// 26..27
// ----------------------
{ PORTA, 22, PIO_DIGITAL, PIN_ATTR_DIGITAL, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_6 },
{ PORTA, 23, PIO_DIGITAL, PIN_ATTR_DIGITAL, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_7 },
{ PORTA, 2, PIO_ANALOG, (PIN_ATTR_DIGITAL|PIN_ATTR_ANALOG), ADC_Channel0, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_2 }, // A0 (Same as D12)
{ PORTA, 5, PIO_ANALOG, (PIN_ATTR_DIGITAL|PIN_ATTR_ANALOG), ADC_Channel5, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_5 }, // A1 (Same as D6)
{ PORTA, 6, PIO_ANALOG, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER|PIN_ATTR_ANALOG), ADC_Channel6, PWM1_CH0, TCC1_CH0, EXTERNAL_INT_6 }, // A2 (Same as D9)
{ PORTA, 7, PIO_ANALOG, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER|PIN_ATTR_ANALOG), ADC_Channel7, PWM1_CH1, TCC1_CH1, EXTERNAL_INT_7 }, // A3 (Same as D10
{ PORTB, 3, PIO_ANALOG, (PIN_ATTR_DIGITAL|PIN_ATTR_ANALOG), ADC_Channel11, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // A4 (Same as D3)
{ PORTB, 2, PIO_ANALOG, (PIN_ATTR_DIGITAL|PIN_ATTR_ANALOG), ADC_Channel10, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_2 }, // A5 (Same as D2)
{ PORTB, 9, PIO_ANALOG, (PIN_ATTR_DIGITAL|PIN_ATTR_ANALOG|PIN_ATTR_PWM|PIN_ATTR_TIMER), ADC_Channel3, PWM4_CH1, TC4_CH1, EXTERNAL_INT_9 }, // A6 (Same as D0)
{ PORTB, 8, PIO_ANALOG, (PIN_ATTR_DIGITAL|PIN_ATTR_ANALOG|PIN_ATTR_PWM|PIN_ATTR_TIMER), ADC_Channel2, PWM4_CH0, TC4_CH0, EXTERNAL_INT_8 }, // A7 (Same as D1)

{ PORTA, 11, PIO_ANALOG, (PIN_ATTR_DIGITAL|PIN_ATTR_ANALOG), ADC_Channel19, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_11 }, // A8 / Light Sensor
{ PORTA, 9, PIO_ANALOG, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER|PIN_ATTR_ANALOG), ADC_Channel17, PWM0_CH1, TCC0_CH1, EXTERNAL_INT_9 }, // A9 / Thermistor
{ PORTA, 4, PIO_ANALOG, (PIN_ATTR_DIGITAL|PIN_ATTR_ANALOG), ADC_Channel4, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_4 }, // A10 Proximity

// GPIO 25 / IR Transmit
{ PORTA, 23, PIO_DIGITAL, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER), No_ADC_Channel, PWM4_CH1, TC4_CH1, EXTERNAL_INT_7 }, // GPIO D25 - IR Transmitter
// GPIO 26 / IR Remote in
{ PORTA, 12, PIO_DIGITAL, PIN_ATTR_DIGITAL, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_12 }, // GPIO D26 - IR Receiver

// GPIO 27 (LIS IRQ)
{ PORTA, 13, PIO_PWM, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM), No_ADC_Channel, PWM0_CH5, NOT_ON_TIMER, EXTERNAL_INT_13 }, // EIC/EXTINT[13] *TCC2/WO[1] TCC0/WO[7]

// 28..30 - SPI pins (ICSP:MISO,SCK,MOSI)
// ----------------------
{ PORTA, 12, PIO_SERCOM_ALT, PIN_ATTR_DIGITAL, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_12 }, // MISO: SERCOM4/PAD[0]
{ PORTB, 10, PIO_SERCOM_ALT, PIN_ATTR_DIGITAL, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_10 }, // MOSI: SERCOM4/PAD[2]
{ PORTB, 11, PIO_SERCOM_ALT, PIN_ATTR_DIGITAL, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_11 }, // SCK: SERCOM4/PAD[3]
// GPIO 28 & 29 internal I2C (original xtal pins)
{ PORTA, 0, PIO_SERCOM_ALT, PIN_ATTR_NONE, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // Internal SDA
{ PORTA, 1, PIO_SERCOM_ALT, PIN_ATTR_NONE, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // Internal SCL

// GPIO31 - SCL
{ PORTB, 3, PIO_SERCOM_ALT, PIN_ATTR_DIGITAL, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // external I2C SCL
// GPIO 30, 31, 32 Internal SPI
{ PORTA, 16, PIO_SERCOM_ALT, PIN_ATTR_NONE, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // MISO: SERCOM3/PAD[0]
{ PORTA, 21, PIO_SERCOM_ALT, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM), No_ADC_Channel, PWM0_CH7, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // SCK: SERCOM3/PAD[3]
{ PORTA, 20, PIO_SERCOM_ALT, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER_ALT), No_ADC_Channel, PWM0_CH6, TCC0_CH6, EXTERNAL_INT_4 }, // MOSI: SERCOM3/PAD[2]

// GPIO 33 - left button
{ PORTA, 27, PIO_OUTPUT, PIN_ATTR_DIGITAL, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // "RX/TX LED"
// GPIO 33 (Flash CS)
{ PORTB, 22, PIO_DIGITAL, PIN_ATTR_NONE, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE },

// GPIO33
{ PORTA, 28, PIO_COM, PIN_ATTR_NONE, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE },
// GPIO 34 (I2S SCK)
{ PORTA, 10, PIO_DIGITAL, (PIN_ATTR_DIGITAL|PIN_ATTR_ANALOG), ADC_Channel18, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_10 },
// GPIO 35 (I2S Datain)
{ PORTA, 8, PIO_DIGITAL, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER|PIN_ATTR_ANALOG), ADC_Channel16, PWM0_CH0, TCC0_CH0, EXTERNAL_INT_NMI },

// 34..35 - USB
// --------------------

// 36..38 - USB
// --------------------
{ PORTA, 22, PIO_SERCOM, PIN_ATTR_NONE, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // GPIO 29 - Host USB (not used)
{ 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


// 36/37 - GPIO
{ PORTB, 22, PIO_SERCOM_ALT, PIN_ATTR_NONE, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE },
{ PORTB, 23, PIO_SERCOM_ALT, PIN_ATTR_NONE, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // RX: SERCOM5/PAD[3]

// 38/39
{ PORTA, 22, PIO_SERCOM, PIN_ATTR_NONE, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // SDA: SERCOM3/PAD[0]
{ PORTA, 23, PIO_SERCOM, PIN_ATTR_NONE, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // SCL: SERCOM3/PAD[1]

// 40..43 - GPIO
{ PORTA, 19, PIO_SERCOM, PIN_ATTR_NONE, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // MISO: SERCOM1/PAD[3]
{ PORTA, 16, PIO_SERCOM, PIN_ATTR_NONE, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // MOSI: SERCOM1/PAD[0]
{ PORTA, 18, PIO_SERCOM, PIN_ATTR_NONE, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // SS: SERCOM1/PAD[2]
{ PORTA, 17, PIO_SERCOM, PIN_ATTR_NONE, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // SCK: SERCOM1/PAD[1]

// 44..47 - GPIO
{ PORTA, 13, PIO_PWM, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM), No_ADC_Channel, PWM0_CH5, NOT_ON_TIMER, EXTERNAL_INT_13 }, // EIC/EXTINT[13] *TCC2/WO[1] TCC0/WO[7]
{ PORTA, 21, PIO_PWM_ALT, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM), No_ADC_Channel, PWM0_CH7, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // Pin 7
{ PORTA, 6, PIO_PWM, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM), No_ADC_Channel, PWM1_CH0, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // Pin 8
{ PORTA, 7, PIO_PWM, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM), No_ADC_Channel, PWM1_CH1, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // Pin 9

// 48 (AREF)
{ PORTA, 3, PIO_ANALOG, PIN_ATTR_ANALOG, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // DAC/VREFP

// 49 & 50 original xtal pins
{ PORTA, 0, PIO_SERCOM_ALT, PIN_ATTR_NONE, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // Internal SDA
{ PORTA, 1, PIO_SERCOM_ALT, PIN_ATTR_NONE, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // Internal SCL

// ----------------------
// 51 - Alternate use of A0 (DAC output)
{ PORTA, 2, PIO_ANALOG, PIN_ATTR_ANALOG, DAC_Channel0, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_2 }, // DAC/VOUT
} ;

const void* g_apTCInstances[TCC_INST_NUM+TC_INST_NUM]={ TCC0, TCC1, TCC2, TC3, TC4, TC5 } ;
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