; BMW I/K-Bus Interface — ESP32 + PC817 Optocoupler
; Based on muki01/I-K_Bus (MIT), ported for ESP32 with R2=220 fix

[platformio]
default_envs = esp32dev

[env]
platform = espressif32
framework = arduino
monitor_speed = 115200
upload_speed = 921600
lib_deps =
build_flags =
    -DIBUS_DEBUG
    -DIBUS_RX_BUFFER_SIZE=256
    -DIBUS_TX_BUFFER_SIZE=128
    -DIBUS_IDLE_TIMEOUT_US=1500
    -DIBUS_PACKET_GAP_MS=10

; --- ESP32 (classic, dual-core) ---
; GPIO 16/17 are UART2 defaults, free on most devkits
[env:esp32dev]
board = esp32dev
build_flags =
    ${env.build_flags}
    -DIBUS_RX_PIN=16
    -DIBUS_TX_PIN=17
    -DIBUS_LED_PIN=2
    -DIBUS_UART_NUM=1

; --- ESP32-C3 (single-core RISC-V) ---
; GPIO 4/5 are general-purpose; GPIO 8 is onboard LED on most C3 devkits
[env:esp32-c3]
board = esp32-c3-devkitm-1
build_flags =
    ${env.build_flags}
    -DIBUS_RX_PIN=4
    -DIBUS_TX_PIN=5
    -DIBUS_LED_PIN=8
    -DIBUS_UART_NUM=1

; --- ESP32-S3 (dual-core, USB native) ---
; GPIO 15/16 free on S3-DevKitM; GPIO 48 is RGB LED
[env:esp32-s3]
board = esp32-s3-devkitm-1
build_flags =
    ${env.build_flags}
    -DIBUS_RX_PIN=15
    -DIBUS_TX_PIN=16
    -DIBUS_LED_PIN=48
    -DIBUS_UART_NUM=1