diff options
Diffstat (limited to 'drivers/avr/serial.c')
| -rw-r--r-- | drivers/avr/serial.c | 139 |
1 files changed, 97 insertions, 42 deletions
diff --git a/drivers/avr/serial.c b/drivers/avr/serial.c index c27cbfdd0a..526a0946b2 100644 --- a/drivers/avr/serial.c +++ b/drivers/avr/serial.c @@ -20,50 +20,111 @@ #ifdef SOFT_SERIAL_PIN -# ifdef __AVR_ATmega32U4__ -// if using ATmega32U4 I2C, can not use PD0 and PD1 in soft serial. -# ifdef USE_AVR_I2C -# if SOFT_SERIAL_PIN == D0 || SOFT_SERIAL_PIN == D1 -# error Using ATmega32U4 I2C, so can not use PD0, PD1 -# endif +# if !(defined(__AVR_AT90USB646__) || defined(__AVR_AT90USB647__) || defined(__AVR_AT90USB1286__) || defined(__AVR_AT90USB1287__) || defined(__AVR_ATmega16U2__) || defined(__AVR_ATmega32U2__) || defined(__AVR_ATmega16U4__) || defined(__AVR_ATmega32U4__)) +# error serial.c is not supported for the currently selected MCU +# endif +// if using ATmega32U4/2, AT90USBxxx I2C, can not use PD0 and PD1 in soft serial. +# if defined(__AVR_ATmega16U4__) || defined(__AVR_ATmega32U4__) || defined(__AVR_AT90USB646__) || defined(__AVR_AT90USB647__) || defined(__AVR_AT90USB1286__) || defined(__AVR_AT90USB1287__) +# if defined(USE_AVR_I2C) && (SOFT_SERIAL_PIN == D0 || SOFT_SERIAL_PIN == D1) +# error Using I2C, so can not use PD0, PD1 # endif +# endif +// PD0..PD3, common config +# if SOFT_SERIAL_PIN == D0 +# define EIMSK_BIT _BV(INT0) +# define EICRx_BIT (~(_BV(ISC00) | _BV(ISC01))) +# define SERIAL_PIN_INTERRUPT INT0_vect +# define EICRx EICRA +# elif SOFT_SERIAL_PIN == D1 +# define EIMSK_BIT _BV(INT1) +# define EICRx_BIT (~(_BV(ISC10) | _BV(ISC11))) +# define SERIAL_PIN_INTERRUPT INT1_vect +# define EICRx EICRA +# elif SOFT_SERIAL_PIN == D2 +# define EIMSK_BIT _BV(INT2) +# define EICRx_BIT (~(_BV(ISC20) | _BV(ISC21))) +# define SERIAL_PIN_INTERRUPT INT2_vect +# define EICRx EICRA +# elif SOFT_SERIAL_PIN == D3 +# define EIMSK_BIT _BV(INT3) +# define EICRx_BIT (~(_BV(ISC30) | _BV(ISC31))) +# define SERIAL_PIN_INTERRUPT INT3_vect +# define EICRx EICRA +# endif -# define setPinInputHigh(pin) (DDRx_ADDRESS(pin) &= ~_BV((pin)&0xF), PORTx_ADDRESS(pin) |= _BV((pin)&0xF)) -# define setPinOutput(pin) (DDRx_ADDRESS(pin) |= _BV((pin)&0xF)) -# define writePinHigh(pin) (PORTx_ADDRESS(pin) |= _BV((pin)&0xF)) -# define writePinLow(pin) (PORTx_ADDRESS(pin) &= ~_BV((pin)&0xF)) -# define readPin(pin) ((bool)(PINx_ADDRESS(pin) & _BV((pin)&0xF))) - -# if SOFT_SERIAL_PIN >= D0 && SOFT_SERIAL_PIN <= D3 -# if SOFT_SERIAL_PIN == D0 -# define EIMSK_BIT _BV(INT0) -# define EICRx_BIT (~(_BV(ISC00) | _BV(ISC01))) -# define SERIAL_PIN_INTERRUPT INT0_vect -# elif SOFT_SERIAL_PIN == D1 -# define EIMSK_BIT _BV(INT1) -# define EICRx_BIT (~(_BV(ISC10) | _BV(ISC11))) -# define SERIAL_PIN_INTERRUPT INT1_vect -# elif SOFT_SERIAL_PIN == D2 -# define EIMSK_BIT _BV(INT2) -# define EICRx_BIT (~(_BV(ISC20) | _BV(ISC21))) -# define SERIAL_PIN_INTERRUPT INT2_vect -# elif SOFT_SERIAL_PIN == D3 -# define EIMSK_BIT _BV(INT3) -# define EICRx_BIT (~(_BV(ISC30) | _BV(ISC31))) -# define SERIAL_PIN_INTERRUPT INT3_vect -# endif +// ATmegaxxU2 specific config +# if defined(__AVR_ATmega16U2__) || defined(__AVR_ATmega32U2__) +// PD4(INT5), PD6(INT6), PD7(INT7), PC7(INT4) +# if SOFT_SERIAL_PIN == D4 +# define EIMSK_BIT _BV(INT5) +# define EICRx_BIT (~(_BV(ISC50) | _BV(ISC51))) +# define SERIAL_PIN_INTERRUPT INT5_vect +# define EICRx EICRB +# elif SOFT_SERIAL_PIN == D6 +# define EIMSK_BIT _BV(INT6) +# define EICRx_BIT (~(_BV(ISC60) | _BV(ISC61))) +# define SERIAL_PIN_INTERRUPT INT6_vect +# define EICRx EICRB +# elif SOFT_SERIAL_PIN == D7 +# define EIMSK_BIT _BV(INT7) +# define EICRx_BIT (~(_BV(ISC70) | _BV(ISC71))) +# define SERIAL_PIN_INTERRUPT INT7_vect +# define EICRx EICRB +# elif SOFT_SERIAL_PIN == C7 +# define EIMSK_BIT _BV(INT4) +# define EICRx_BIT (~(_BV(ISC40) | _BV(ISC41))) +# define SERIAL_PIN_INTERRUPT INT4_vect +# define EICRx EICRB +# endif +# endif + +// ATmegaxxU4 specific config +# if defined(__AVR_ATmega16U4__) || defined(__AVR_ATmega32U4__) +// PE6(INT6) +# if SOFT_SERIAL_PIN == E6 +# define EIMSK_BIT _BV(INT6) +# define EICRx_BIT (~(_BV(ISC60) | _BV(ISC61))) +# define SERIAL_PIN_INTERRUPT INT6_vect +# define EICRx EICRB +# endif +# endif + +// AT90USBxxx specific config +# if defined(__AVR_AT90USB646__) || defined(__AVR_AT90USB647__) || defined(__AVR_AT90USB1286__) || defined(__AVR_AT90USB1287__) +// PE4..PE7(INT4..INT7) +# if SOFT_SERIAL_PIN == E4 +# define EIMSK_BIT _BV(INT4) +# define EICRx_BIT (~(_BV(ISC40) | _BV(ISC41))) +# define SERIAL_PIN_INTERRUPT INT4_vect +# define EICRx EICRB +# elif SOFT_SERIAL_PIN == E5 +# define EIMSK_BIT _BV(INT5) +# define EICRx_BIT (~(_BV(ISC50) | _BV(ISC51))) +# define SERIAL_PIN_INTERRUPT INT5_vect +# define EICRx EICRB # elif SOFT_SERIAL_PIN == E6 # define EIMSK_BIT _BV(INT6) # define EICRx_BIT (~(_BV(ISC60) | _BV(ISC61))) # define SERIAL_PIN_INTERRUPT INT6_vect -# else -# error invalid SOFT_SERIAL_PIN value +# define EICRx EICRB +# elif SOFT_SERIAL_PIN == E7 +# define EIMSK_BIT _BV(INT7) +# define EICRx_BIT (~(_BV(ISC70) | _BV(ISC71))) +# define SERIAL_PIN_INTERRUPT INT7_vect +# define EICRx EICRB # endif +# endif -# else -# error serial.c now support ATmega32U4 only +# ifndef SERIAL_PIN_INTERRUPT +# error invalid SOFT_SERIAL_PIN value # endif +# define setPinInputHigh(pin) (DDRx_ADDRESS(pin) &= ~_BV((pin)&0xF), PORTx_ADDRESS(pin) |= _BV((pin)&0xF)) +# define setPinOutput(pin) (DDRx_ADDRESS(pin) |= _BV((pin)&0xF)) +# define writePinHigh(pin) (PORTx_ADDRESS(pin) |= _BV((pin)&0xF)) +# define writePinLow(pin) (PORTx_ADDRESS(pin) &= ~_BV((pin)&0xF)) +# define readPin(pin) ((bool)(PINx_ADDRESS(pin) & _BV((pin)&0xF))) + # define ALWAYS_INLINE __attribute__((always_inline)) # define NO_INLINE __attribute__((noinline)) # define _delay_sub_us(x) __builtin_avr_delay_cycles(x) @@ -210,15 +271,9 @@ void soft_serial_target_init(SSTD_t *sstd_table, int sstd_table_size) { Transaction_table_size = (uint8_t)sstd_table_size; serial_input_with_pullup(); - // Enable INT0-INT3,INT6 + // Enable INT0-INT7 EIMSK |= EIMSK_BIT; -# if SOFT_SERIAL_PIN == E6 - // Trigger on falling edge of INT6 - EICRB &= EICRx_BIT; -# else - // Trigger on falling edge of INT0-INT3 - EICRA &= EICRx_BIT; -# endif + EICRx &= EICRx_BIT; } // Used by the sender to synchronize timing with the reciver. |