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| author | Joel Challis <git@zvecr.com> | 2020-04-02 22:23:57 +0100 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2020-04-02 22:23:57 +0100 |
| commit | 9c4bf0ac4aed4ab315f27bfa5d2f54b0dd931138 (patch) | |
| tree | 65e9caa97daa7616565835b0c0b88fe4ce79a8c4 | |
| parent | f2901375ce9fbf14e4a95eabf3b6abc7bfbc4300 (diff) | |
Initial support for ATtiny85 (#8632)
* Initial support for ATtiny85
* Update mcu selection
| -rw-r--r-- | quantum/config_common.h | 3 | ||||
| -rw-r--r-- | quantum/mcu_selection.mk | 15 | ||||
| -rw-r--r-- | tmk_core/common/avr/bootloader.c | 2 | ||||
| -rw-r--r-- | tmk_core/common/avr/timer.c | 19 |
4 files changed, 32 insertions, 7 deletions
diff --git a/quantum/config_common.h b/quantum/config_common.h index 4cfd74b0fe..9861c86780 100644 --- a/quantum/config_common.h +++ b/quantum/config_common.h @@ -63,6 +63,9 @@ # define PINB_ADDRESS 0x3 # define PINC_ADDRESS 0x6 # define PIND_ADDRESS 0x9 +# elif defined(__AVR_ATtiny85__) +# define ADDRESS_BASE 0x10 +# define PINB_ADDRESS 0x6 # else # error "Pins are not defined" # endif diff --git a/quantum/mcu_selection.mk b/quantum/mcu_selection.mk index ef7e8ae75d..33de162bb1 100644 --- a/quantum/mcu_selection.mk +++ b/quantum/mcu_selection.mk @@ -287,3 +287,18 @@ ifneq (,$(filter $(MCU),atmega328p)) NO_UART ?= yes NO_SUSPEND_POWER_DOWN ?= yes endif + +ifneq (,$(filter $(MCU),attiny85)) + PROTOCOL = VUSB + + # Processor frequency. + # This will define a symbol, F_CPU, in all source code files equal to the + # processor frequency in Hz. You can then use this symbol in your source code to + # calculate timings. Do NOT tack on a 'UL' at the end, this will be done + # automatically to create a 32-bit value in your source code. + F_CPU ?= 16500000 + + # unsupported features for now + NO_UART ?= yes + NO_SUSPEND_POWER_DOWN ?= yes +endif diff --git a/tmk_core/common/avr/bootloader.c b/tmk_core/common/avr/bootloader.c index ca9746f327..32f69ae8b4 100644 --- a/tmk_core/common/avr/bootloader.c +++ b/tmk_core/common/avr/bootloader.c @@ -247,7 +247,7 @@ void bootloader_jump(void) { #else // Assume remaining boards are DFU, even if the flag isn't set -# if !(defined(__AVR_ATmega32A__) || defined(__AVR_ATmega328P__)) // no USB - maybe BOOTLOADER_BOOTLOADHID instead though? +# if !(defined(__AVR_ATmega32A__) || defined(__AVR_ATmega328P__) || defined(__AVR_ATtiny85__)) // no USB - maybe BOOTLOADER_BOOTLOADHID instead though? UDCON = 1; USBCON = (1 << FRZCLK); // disable USB UCSR1B = 0; diff --git a/tmk_core/common/avr/timer.c b/tmk_core/common/avr/timer.c index 88fa1dfa65..c2e6c6e081 100644 --- a/tmk_core/common/avr/timer.c +++ b/tmk_core/common/avr/timer.c @@ -45,19 +45,26 @@ void timer_init(void) { # error "Timer prescaler value is not valid" #endif -#ifndef __AVR_ATmega32A__ +#if defined(__AVR_ATmega32A__) + // Timer0 CTC mode + TCCR0 = _BV(WGM01) | prescaler; + + OCR0 = TIMER_RAW_TOP; + TIMSK = _BV(OCIE0); +#elif defined(__AVR_ATtiny85__) // Timer0 CTC mode TCCR0A = _BV(WGM01); TCCR0B = prescaler; - OCR0A = TIMER_RAW_TOP; - TIMSK0 = _BV(OCIE0A); + OCR0A = TIMER_RAW_TOP; + TIMSK = _BV(OCIE0A); #else // Timer0 CTC mode - TCCR0 = _BV(WGM01) | prescaler; + TCCR0A = _BV(WGM01); + TCCR0B = prescaler; - OCR0 = TIMER_RAW_TOP; - TIMSK = _BV(OCIE0); + OCR0A = TIMER_RAW_TOP; + TIMSK0 = _BV(OCIE0A); #endif } |