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Board.hh
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Board.hh
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/**
* @file PJRC/Teensypp_2_0/Board.hh
* @version 1.0
*
* @section License
* Copyright (C) 2014-2015, Mikael Patel
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* This file is part of the Arduino Che Cosa project.
*/
#ifndef COSA_PJRC_TEENSYPP_2_0_HH
#define COSA_PJRC_TEENSYPP_2_0_HH
/* This board is based on AT90USB1286 */
#define BOARD_AT90USB1286
/**
* Compiler warning on unused varable.
*/
#if !defined(UNUSED)
#define UNUSED(x) (void) (x)
#endif
/**
* Cosa pin symbol definitions for the PJRC Teensy++ 2.0, AT90USB1286
* based board. Cosa does not use pin numbers as Arduino/Wiring,
* instead strong data type is used (enum types) for the specific pin
* classes; DigitalPin, AnalogPin, PWMPin, etc.
*
* The pin numbers for Teensy++ 2.0 are only symbolically mapped,
* i.e. a pin number/digit will not work, symbols must be used,
* e.g., Board::D12. Avoid iterations assuming that the symbols
* are in order.
*
* The static inline functions, SFR, BIT and UART, rely on compiler
* optimizations to be reduced.
*
* @section Board
* @code
* Teensy++ 2.0
* -----
* +----| V |----+
* GND |o | | o| VCC
* D27 |o ----- o| D26
* D0 |o o| D25
* D1 |o o| D24
* D2 |o o| D23
* D3 |o 36 o-o 37 o| D22
* D4 |o o| D21
* D5 |o o| D20
* LED/D6 |o o| D19
* D7 |o o| D18
* D8 |o o| GND
* D9 |o o| AREF
* D10 |o o| D38/A0
* D11 |o 32 o-o 28 o| D39/A1
* D12 |o 33 o-o 29 o| D40/A2
* D13 |o 34 o-o 30 o| D41/A3
* D14 |o 35 o-o 31 o| D42/A4
* D15 |o o| D43/A5
* D16 |o ( ) o| D44/A6
* D17 |o o o o o| D45/A7
* +-------------+
* / | \
* RST GND VCC
* @endcode
*/
class Board {
friend class Pin;
friend class GPIO;
friend class UART;
private:
/**
* Do not allow instances. This is a static singleton; name space.
*/
Board() {}
/**
* Return Special Function Register for given Teensy pin number.
* @param[in] pin number.
* @return special register pointer.
*/
static volatile uint8_t* SFR(uint8_t pin)
__attribute__((always_inline))
{
return (pin < 8 ? &PIND :
pin < 16 ? &PINC :
pin < 24 ? &PINB :
pin < 32 ? &PINA :
pin < 40 ? &PINE :
&PINF);
}
/**
* Return bit position for given Teensy pin number in Special
* Function Register.
* @param[in] pin number.
* @return pin bit position.
*/
static uint8_t BIT(uint8_t pin)
__attribute__((always_inline))
{
return (pin & 0x07);
}
/**
* Return Pin Change Mask Register for given Teensy pin number.
* @param[in] pin number.
* @return pin change mask register pointer.
*/
static volatile uint8_t* PCIMR(uint8_t pin)
__attribute__((always_inline))
{
UNUSED(pin);
return (&PCMSK0);
}
/**
* Return UART Register for given Teensy serial port.
* @param[in] port number.
* @return UART register pointer.
*/
static volatile uint8_t* UART(uint8_t port)
__attribute__((always_inline))
{
UNUSED(port);
return (&UCSR1A);
}
public:
/**
* Initiate board ports. Default void.
*/
static void init() {}
/**
* Digital pin symbols
*/
enum DigitalPin {
D0 = 0, // PD0
D1 = 1, // PD1
D2 = 2, // PD2
D3 = 3, // PD3
D4 = 4, // PD4
D5 = 5, // PD5
D6 = 6, // PD6
D7 = 7, // PD7
D8 = 32, // PE0
D9 = 33, // PE1
D10 = 8, // PC0
D11 = 9, // PC1
D12 = 10, // PC2
D13 = 11, // PC3
D14 = 12, // PC4
D15 = 13, // PC5
D16 = 14, // PC6
D17 = 15, // PC7
D18 = 39, // PE7
D19 = 38, // PE6
D20 = 16, // PB0
D21 = 17, // PB1
D22 = 18, // PB2
D23 = 19, // PB3
D24 = 20, // PB4
D25 = 21, // PB5
D26 = 22, // PB6
D27 = 23, // PB7
D28 = 24, // PA0
D29 = 25, // PA1
D30 = 26, // PA2
D31 = 27, // PA3
D32 = 28, // PA4
D33 = 29, // PA5
D34 = 30, // PA6
D35 = 31, // PA7
D36 = 36, // PE4
D37 = 37, // PE5
D38 = 40, // PF0
D39 = 41, // PF1
D40 = 42, // PF2
D41 = 43, // PF3
D42 = 44, // PF4
D43 = 45, // PF5
D44 = 46, // PF6
D45 = 47, // PF7
LED = D6
} __attribute__((packed));
/**
* Analog pin symbols (ADC channel numbers)
*/
enum AnalogPin {
A0 = 0, // PF0
A1 = 1, // PF1
A2 = 2, // PF2
A3 = 3, // PF3
A4 = 5, // PF4
A5 = 5, // PF5
A6 = 6, // PF6
A7 = 7 // PF7
} __attribute__((packed));
/**
* Reference voltage; ARef pin, Vcc or internal 2V56
*/
enum Reference {
APIN_REFERENCE = 0,
AVCC_REFERENCE = _BV(REFS0),
A2V56_REFERENCE = (_BV(REFS1) | _BV(REFS0))
} __attribute__((packed));
/**
* PWM pin symbols; sub-set of digital pins to allow compile
* time checking
*/
enum PWMPin {
PWM0 = D27, // PB7 => OCR0A
PWM1 = D0, // PD0 => OCR0B
PWM2 = D25, // PB5 => OCR1A
PWM3 = D26, // PB6 => OCR1B
PWM4 = D16, // PC6 => OCR3A
PWM5 = D15, // PC5 => OCR3B
PWM6 = D14 // PD4 => OCR3C
} __attribute__((packed));
/**
* External interrupt pin symbols; sub-set of digital pins
* to allow compile time checking.
*/
enum ExternalInterruptPin {
EXT0 = D0, // PD0
EXT1 = D1, // PD1
EXT2 = D2, // PD2
EXT3 = D3, // PD3
EXT4 = D36, // PE4
EXT5 = D37, // PE5
EXT6 = D18, // PE6
EXT7 = D19 // PE7
} __attribute__((packed));
/**
* Pin change interrupt (PCI) pins. Number of port registers.
*/
enum InterruptPin {
PCI0 = D20, // PB0
PCI1 = D21, // PB1
PCI2 = D22, // PB2
PCI3 = D23, // PB3
PCI4 = D24, // PB4
PCI5 = D25, // PB5
PCI6 = D26, // PB6
PCI7 = D27 // PB7
} __attribute__((packed));
/**
* Size of pin maps.
*/
enum {
ANALOG_PIN_MAX = 8,
DIGITAL_PIN_MAX = 46,
EXT_PIN_MAX = 8,
PCI_PIN_MAX = 8,
PWM_PIN_MAX = 7
};
/**
* Pins used for TWI interface (in port D, bit 0-1, D0-D1)
*/
enum TWIPin {
SDA = 1, // PD1/D1
SCL = 0 // PD0/D0
} __attribute__((packed));
/**
* Pins used for SPI interface (in port B, bit 0-3, D20-D23)
*/
enum SPIPin {
SS = 0, // PB0/D20
MOSI = 2, // PB2/D22
MISO = 3, // PB3/D23
SCK = 1 // PB1/D21
} __attribute__((packed));
/**
* Auxiliary
*/
enum {
VBG = (_BV(MUX4) | _BV(MUX3) | _BV(MUX2) | _BV(MUX1)),
UART_MAX = 2,
EXT_MAX = 8,
PCMSK_MAX = 1,
PCINT_MAX = 8
} __attribute__((packed));
};
/**
* Redefined symbols to allow generic code.
*/
#define UCSZ00 UCSZ10
#define UCSZ01 UCSZ11
#define UCSZ02 UCSZ12
#define UPM00 UPM10
#define UPM01 UPM11
#define USBS0 USBS1
#define U2X0 U2X1
#define TXC0 TXC1
#define RXCIE0 RXCIE1
#define RXEN0 RXEN1
#define TXEN0 TXEN1
#define UDRE0 UDRE1
#define UDRIE0 UDRIE1
#define TXCIE0 TXCIE1
#if !defined(ADCW)
#define ADCW ADC
#endif
#undef ID
/**
* Forward declare interrupt service routines to allow them as friends.
*/
extern "C" {
void ADC_vect(void) __attribute__ ((signal));
void ANALOG_COMP_vect(void) __attribute__ ((signal));
void INT0_vect(void) __attribute__ ((signal));
void INT1_vect(void) __attribute__ ((signal));
void INT2_vect(void) __attribute__ ((signal));
void INT3_vect(void) __attribute__ ((signal));
void INT4_vect(void) __attribute__ ((signal));
void INT5_vect(void) __attribute__ ((signal));
void INT6_vect(void) __attribute__ ((signal));
void INT7_vect(void) __attribute__ ((signal));
void PCINT0_vect(void) __attribute__ ((signal));
void SPI_STC_vect(void) __attribute__ ((signal));
void TIMER0_COMPA_vect(void) __attribute__ ((signal));
void TIMER0_COMPB_vect(void) __attribute__ ((signal));
void TIMER0_OVF_vect(void) __attribute__ ((signal));
void TIMER1_CAPT_vect(void) __attribute__ ((signal));
void TIMER1_COMPA_vect(void) __attribute__ ((signal));
void TIMER1_COMPB_vect(void) __attribute__ ((signal));
void TIMER1_COMPC_vect(void) __attribute__ ((signal));
void TIMER1_OVF_vect(void) __attribute__ ((signal));
void TIMER2_COMPA_vect(void) __attribute__ ((signal));
void TIMER2_COMPB_vect(void) __attribute__ ((signal));
void TIMER2_OVF_vect(void) __attribute__ ((signal));
void TIMER3_CAPT_vect(void) __attribute__ ((signal));
void TIMER3_COMPA_vect(void) __attribute__ ((signal));
void TIMER3_COMPB_vect(void) __attribute__ ((signal));
void TIMER3_COMPC_vect(void) __attribute__ ((signal));
void TIMER3_OVF_vect(void) __attribute__ ((signal));
void TWI_vect(void) __attribute__ ((signal));
void WDT_vect(void) __attribute__ ((signal));
void USART1_RX_vect(void) __attribute__ ((signal));
void USART1_TX_vect(void) __attribute__ ((signal));
void USART1_UDRE_vect(void) __attribute__ ((signal));
void USB_COM_vect(void) __attribute__ ((signal));
void USB_GEN_vect(void) __attribute__ ((signal));
}
#endif