avr-build.yml

name: AVR Build

on:
  push:
    branches: [main]
  pull_request:
    branches: [main]

jobs:
  build:
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v4

      - name: Install AVR toolchain
        run: |
          sudo apt-get update -q
          sudo apt-get install -y gcc-avr binutils-avr avr-libc avra

      - name: Locate avra include path
        run: |
          AVRA_INC=$(find /usr/share/avra -name "m32def.inc" 2>/dev/null | head -1 | xargs dirname)
          echo "AVRA_INC=$AVRA_INC" >> $GITHUB_ENV

      - name: Assemble Lab 6 (external interrupts)
        run: avra -I "$AVRA_INC" Lab6_Interrupts/lab6_interrupts.asm

      - name: Assemble Lab 7 Part 1 (timer LED roll)
        run: |
          sed 's/^\.equ PART_SELECT = ./.equ PART_SELECT = 1/' \
            Lab7_Timers_Keypad/lab7_timers_keypad.asm > /tmp/lab7_p1.asm
          avra -I "$AVRA_INC" /tmp/lab7_p1.asm

      - name: Assemble Lab 7 Part 2 (keypad ASCII lookup)
        run: |
          sed 's/^\.equ PART_SELECT = ./.equ PART_SELECT = 2/' \
            Lab7_Timers_Keypad/lab7_timers_keypad.asm > /tmp/lab7_p2.asm
          avra -I "$AVRA_INC" /tmp/lab7_p2.asm

      - name: Assemble Lab 7 Part 3 (SRAM message buffer)
        run: avra -I "$AVRA_INC" Lab7_Timers_Keypad/lab7_timers_keypad.asm

      - name: Assemble Lab 8 Part 2 (PWM servo)
        run: avra -I "$AVRA_INC" Lab8_PWM_ADC/lab8_part2_pwm_servo.asm

      - name: Compile Lab 8 Part 6 (ADC / C)
        run: |
          avr-gcc -mmcu=atmega32 -DF_CPU=1000000UL \
            -Wall -Wextra -Os \
            -c Lab8_PWM_ADC/lab8_part6_adc_servo.c \
            -o /tmp/lab8_part6_adc_servo.o