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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 Florian Didron
parent 65de39bb6d
commit fec6ee365c
4 changed files with 37 additions and 12 deletions
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3
quantum/config_common.h
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@@ -64,6 +64,9 @@
# define PINB_ADDRESS 0x3 # define PINB_ADDRESS 0x3
# define PINC_ADDRESS 0x6 # define PINC_ADDRESS 0x6
# define PIND_ADDRESS 0x9 # define PIND_ADDRESS 0x9
# elif defined(__AVR_ATtiny85__)
# define ADDRESS_BASE 0x10
# define PINB_ADDRESS 0x6
# else # else
# error "Pins are not defined" # error "Pins are not defined"
# endif # endif

15
quantum/mcu_selection.mk
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@@ -290,3 +290,18 @@ ifneq (,$(filter $(MCU),atmega328p))
NO_UART ?= yes NO_UART ?= yes
NO_SUSPEND_POWER_DOWN ?= yes NO_SUSPEND_POWER_DOWN ?= yes
endif endif
ifneq (,$(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

10
tmk_core/common/avr/bootloader.c
View File

@@ -237,17 +237,17 @@ void bootloader_jump(void) {
"bootloader_startup_loop%=: \n\t" "bootloader_startup_loop%=: \n\t"
"rjmp 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) # 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 # 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 # 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 #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; UDCON = 1;
USBCON = (1 << FRZCLK); // disable USB USBCON = (1 << FRZCLK); // disable USB
UCSR1B = 0; UCSR1B = 0;

21
tmk_core/common/avr/timer.c
View File

@@ -45,19 +45,26 @@ void timer_init(void) {
# error "Timer prescaler value is not valid" # error "Timer prescaler value is not valid"
#endif #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 // Timer0 CTC mode
TCCR0A = _BV(WGM01); TCCR0A = _BV(WGM01);
TCCR0B = prescaler; TCCR0B = prescaler;
OCR0A = TIMER_RAW_TOP; OCR0A = TIMER_RAW_TOP;
TIMSK0 = _BV(OCIE0A); TIMSK0 = _BV(OCIE0A);
#else
// Timer0 CTC mode
TCCR0 = _BV(WGM01) | prescaler;
OCR0 = TIMER_RAW_TOP;
TIMSK = _BV(OCIE0);
#endif #endif
} }