How to program attiny24

1

Hi,

I would like to use platformio for developing a program for an AtTiny24. AFAIK there is generic support for ATTiny24 contained in Arduino framework.

I can’t make pio run with this platform.io

[platformio]
env_default=attiny


[env:attiny]
board=attiny24
framework=arduino

What do I have to do in order to get AtTiny24 support?

TIA

2

Hmm. Really such a strange questions, nobody can answer?

3

After installing framework atmelavr this seems to be a good platform.in

[platformio]
env_default=attiny

[env:attiny]
board=attiny24
platform=atmelavr

4

Could you provide a build output?

5

OK, found a little sample script:

#include <avr/io.h>
#include <util/delay.h>
#include <avr/interrupt.h>

int main(void)
{
    // make the LED pin an output for PORTB5
    DDRB = 1 << 5;

    while (1)
    {
        _delay_ms(500);

        // toggle the LED
        PORTB ^= 1 << 5;
    }
    return 0;
}

Compiled with

pio run -v

[Thu Apr 27 21:58:15 2017] Processing attiny (platform: atmelavr, board: attiny24)
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Collected 0 compatible libraries
Looking for dependencies...
Project does not have dependencies
avr-gcc -o .pioenvs/attiny/src/main.o -c -std=gnu11 -fno-fat-lto-objects -g -Os -Wall -ffunction-sections -fdata-sections -flto -mmcu=attiny24 -DF_CPU=8000000L -DPLATFORMIO=30300 -DARDUINO_ARCH_AVR -DARDUINO_AVR_ATTINY24 -Isrc src/main.c
avr-gcc -o .pioenvs/attiny/firmware.elf -Os -mmcu=attiny24 -Wl,--gc-sections -flto -fuse-linker-plugin .pioenvs/attiny/src/main.o -L.pioenvs/attiny -Wl,--start-group -lm -Wl,--end-group
avr-size --mcu=attiny24 -C -d .pioenvs/attiny/firmware.elf
avr-objcopy -O ihex -R .eeprom .pioenvs/attiny/firmware.elf .pioenvs/attiny/firmware.hex
AVR Memory Usage
----------------
Device: attiny24

Program:      84 bytes (4.1% Full)
(.text + .data + .bootloader)

Data:          0 bytes (0.0% Full)
(.data + .bss + .noinit)

Got .hex and .elf. .Hex here:

:1000000010C015C014C013C012C011C010C00FC062
:100010000EC00DC00CC00BC00AC009C008C007C08C
:1000200006C011241FBECFEDCDBF02D008C0E8CF5F
:1000300080E287BB90E288B3892788BBFCCFF89425
:02004000FFCFF0
:00000001FF

Could disassemble:

~/.platformio/packages/toolchain-atmelavr/avr/bin/objdump -j .sec1 -d -m avr .pioenvs/attiny/firmware.hex

Looks OK (at least changes like cli() appeared in the disassembly)

6

Could you program attiny24 with Arduino IDE using Arduino framework?

7

Don’t use the IDE. Not necessary

8

We have an opened issue for that