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Initial support for ATtiny85 (#8632)

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* Initial support for ATtiny85

* Update mcu selection
This commit is contained in:
Joel Challis 2020-04-02 22:23:57 +01:00 • committed by GitHub
parent f2901375ce
commit 9c4bf0ac4a
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GPG key ID: 4AEE18F83AFDEB23
4 changed files with 33 additions and 8 deletions
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2
tmk_core/common/avr/bootloader.c
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@ -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;

21
tmk_core/common/avr/timer.c
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@ -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;
TIMSK = _BV(OCIE0A);
#else
// Timer0 CTC mode
TCCR0A = _BV(WGM01);
TCCR0B = prescaler;
OCR0A = TIMER_RAW_TOP;
TIMSK0 = _BV(OCIE0A);
#else
// Timer0 CTC mode
TCCR0 = _BV(WGM01) | prescaler;
OCR0 = TIMER_RAW_TOP;
TIMSK = _BV(OCIE0);
#endif
}