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authorJoel Challis <git@zvecr.com>2020-04-02 22:23:57 +0100
committerFlorian Didron <fdidron@users.noreply.github.com>2020-06-12 17:00:27 +0900
commitfec6ee365cac76f3dbb9e81bd544eefe8f6dbc76 (patch)
treed4da10608dce4b2b312b92e5c774c8cab6fb8eae /tmk_core
parent65de39bb6d234a5527a3491f281b4a715de3e52b (diff)
Initial support for ATtiny85 (#8632)
* Initial support for ATtiny85 * Update mcu selection
Diffstat (limited to 'tmk_core')
-rw-r--r--tmk_core/common/avr/bootloader.c10
-rw-r--r--tmk_core/common/avr/timer.c19
2 files changed, 18 insertions, 11 deletions
diff --git a/tmk_core/common/avr/bootloader.c b/tmk_core/common/avr/bootloader.c
index ca9746f327..7e5d2b0579 100644
--- a/tmk_core/common/avr/bootloader.c
+++ b/tmk_core/common/avr/bootloader.c
@@ -237,17 +237,17 @@ void bootloader_jump(void) {
"bootloader_startup_loop%=: \n\t"
"rjmp bootloader_startup_loop%= \n\t"
:
- : [ mcucsrio ] "I"(_SFR_IO_ADDR(MCUCSR)),
+ : [mcucsrio] "I"(_SFR_IO_ADDR(MCUCSR)),
# if (FLASHEND > 131071)
- [ ramendhi ] "M"(((RAMEND - 2) >> 8) & 0xff), [ ramendlo ] "M"(((RAMEND - 2) >> 0) & 0xff), [ bootaddrhi ] "M"((((FLASH_SIZE - BOOTLOADER_SIZE) >> 1) >> 16) & 0xff),
+ [ramendhi] "M"(((RAMEND - 2) >> 8) & 0xff), [ramendlo] "M"(((RAMEND - 2) >> 0) & 0xff), [bootaddrhi] "M"((((FLASH_SIZE - BOOTLOADER_SIZE) >> 1) >> 16) & 0xff),
# else
- [ ramendhi ] "M"(((RAMEND - 1) >> 8) & 0xff), [ ramendlo ] "M"(((RAMEND - 1) >> 0) & 0xff),
+ [ramendhi] "M"(((RAMEND - 1) >> 8) & 0xff), [ramendlo] "M"(((RAMEND - 1) >> 0) & 0xff),
# endif
- [ bootaddrme ] "M"((((FLASH_SIZE - BOOTLOADER_SIZE) >> 1) >> 8) & 0xff), [ bootaddrlo ] "M"((((FLASH_SIZE - BOOTLOADER_SIZE) >> 1) >> 0) & 0xff));
+ [bootaddrme] "M"((((FLASH_SIZE - BOOTLOADER_SIZE) >> 1) >> 8) & 0xff), [bootaddrlo] "M"((((FLASH_SIZE - BOOTLOADER_SIZE) >> 1) >> 0) & 0xff));
#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
}