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Add support for soft serial to ATmega32U2 (#10204)

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* Add support for soft serial to ATmega32U2

* Update drivers/avr/serial.c

* Update drivers/avr/serial.c

* Update drivers/avr/serial.c

* Fix comment

* Update drivers/avr/serial.c
This commit is contained in:
Naoto Takai 2020-09-03 01:18:21 +09:00 • committed by James Young
parent 53ad78b4b6
commit 73d20754bb
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GPG key ID: 8E1085BF6FCFBD74
3 changed files with 12 additions and 7 deletions
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10
drivers/avr/serial.c
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@ -20,11 +20,11 @@
#ifdef SOFT_SERIAL_PIN
# ifdef __AVR_ATmega32U4__
// if using ATmega32U4 I2C, can not use PD0 and PD1 in soft serial.
# if defined(__AVR_ATmega16U2__) || defined(__AVR_ATmega32U2__) || defined(__AVR_ATmega16U4__) || defined(__AVR_ATmega32U4__)
// if using ATmegaxxU4 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
# error Using ATmegaxxU4 I2C, so can not use PD0, PD1
# endif
# endif
@ -52,7 +52,7 @@
# define EICRx_BIT (~(_BV(ISC30) | _BV(ISC31)))
# define SERIAL_PIN_INTERRUPT INT3_vect
# endif
# elif SOFT_SERIAL_PIN == E6
# elif (defined(__AVR_ATmega16U4__) || defined(__AVR_ATmega32U4__)) && SOFT_SERIAL_PIN == E6
# define EIMSK_BIT _BV(INT6)
# define EICRx_BIT (~(_BV(ISC60) | _BV(ISC61)))
# define SERIAL_PIN_INTERRUPT INT6_vect
@ -61,7 +61,7 @@
# endif
# else
# error serial.c now support ATmega32U4 only
# error serial.c currently only supports ATmegaxxU2 and ATmegaxxU4
# endif
# define ALWAYS_INLINE __attribute__((always_inline))