Files
eink-photo-frame/firmware/tools/load_env.py
Thomas Hallock 4642b90366 Wire WiFi creds via .env + build-time injection, add heartbeat reporting
Adopts the weather-display pattern: .env file parsed by tools/load_env.py
and injected as -D compiler flags. WIFI_NETWORKS uses "SSID:password" format.
ESP32 now sends a heartbeat POST after each display update so the server
can track frame status for the HA integration.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-03-26 17:28:20 -05:00

28 lines
959 B
Python

"""
PlatformIO pre-build script: reads .env and injects values as -D build flags.
Handles quoting so that comma-separated WIFI_NETWORKS works as a single string.
"""
Import("env")
import os
env_file = os.path.join(env.get("PROJECT_DIR", "."), ".env")
if not os.path.exists(env_file):
print("WARNING: .env file not found, skipping credential injection")
else:
with open(env_file) as f:
for line in f:
line = line.strip()
if not line or line.startswith("#"):
continue
key, _, value = line.partition("=")
key = key.strip()
value = value.strip().strip('"').strip("'")
if not key or not value:
continue
# Escape for C string literal
escaped = value.replace("\\", "\\\\").replace('"', '\\"')
env.Append(CPPDEFINES=[(key, env.StringifyMacro(escaped))])
print(f" .env: {key} = {value[:20]}...")