From 9c4bf0ac4aed4ab315f27bfa5d2f54b0dd931138 Mon Sep 17 00:00:00 2001 From: Joel Challis Date: Thu, 2 Apr 2020 22:23:57 +0100 Subject: Initial support for ATtiny85 (#8632) * Initial support for ATtiny85 * Update mcu selection --- tmk_core/common/avr/bootloader.c | 2 +- tmk_core/common/avr/timer.c | 19 +++++++++++++------ 2 files changed, 14 insertions(+), 7 deletions(-) (limited to 'tmk_core/common/avr') 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 } -- cgit v1.2.3