Files
MeshCore/scripts/check_firmware_ram.py
T

485 lines
26 KiB
Python

#!/usr/bin/env python3
"""Gate firmware builds on internal RAM capacity and startup allowances.
Uses real linker heap bounds on ARM and the linked ESP-IDF allocator tables on
ESP32. These are capacity checks before dynamic allocation, not hardware soak
results. MQTT uses a startup minimum with separate runtime admission; a passing
build does not qualify its maximum TLS/WSS/outbox load. PSRAM, instruction-only
RAM and reserved bootloader arenas never count as internal heap. See
docs/research/firmware_memory_budget.md for the budget policy.
"""
from __future__ import annotations
import argparse
import hashlib
import json
from pathlib import Path
import re
import struct
import sys
SCRIPT_DIR = Path(__file__).resolve().parent if "__file__" in globals() else Path("scripts").resolve()
sys.path.insert(0, str(SCRIPT_DIR))
from firmware_elf import FirmwareElf
SUPPORTED = {"NRF52_PLATFORM", "ESP32_PLATFORM", "RP2040_PLATFORM", "STM32_PLATFORM"}
DISPLAY_HEAP = {
"": 0, "NullDisplayDriver": 0,
"ST7735Display": 25602,
"SSD1306Display": 4096, "SH1106Display": 4096, "U8g2Display": 4096,
"SH1107Display": 4096,
# These drivers render directly or embed their pixel storage in globals.
"ST7789Display": 0, "ST7789LCDDisplay": 0, "NV3001BDisplay": 0,
"GxEPDDisplay": 0, "E213Display": 8192, "E290Display": 8192,
}
# Match MQTTBridge's default worker and its explicit SDK client task/buffers.
# The legacy 24 KiB allowance covers two clients with 512 bytes beyond the known
# stacks/buffers. It is a startup minimum, not a bound on TLS/WSS/outbox memory.
MQTT_STARTUP_ALLOWANCE = 24576
MQTT_WORKER_STACK_BYTES = 8192
MQTT_CLIENT_STACK_BYTES = 6144
MQTT_CLIENT_BUFFER_BYTES = 2 * 896
def integer(defines, name, default):
value = str(defines.get(name, default)).strip().strip("()")
value = re.sub(r"[uUlL]+$", "", value)
try:
result = int(value, 0)
except ValueError as error:
raise ValueError(f"memory budget needs an integer {name}, got {value!r}") from error
if result < 0:
raise ValueError(f"negative memory budget input {name}")
return result
def mqtt_requirements(defines):
psram = "BOARD_HAS_PSRAM" in defines
slots = integer(defines, "MQTT_RUNTIME_SLOT_COUNT", 6 if psram else 3)
if not 1 <= slots <= 6:
raise ValueError("MQTT_RUNTIME_SLOT_COUNT must be between 1 and 6")
worker_stack = integer(defines, "MQTT_TASK_STACK_SIZE", MQTT_WORKER_STACK_BYTES)
if worker_stack == 0:
raise ValueError("MQTT_TASK_STACK_SIZE must be positive")
# Reducing slots or stack size cannot lower the existing allowance. Extra
# slots are lazy and each attempt must pass the production admission guard.
startup = MQTT_STARTUP_ALLOWANCE + max(0, worker_stack - MQTT_WORKER_STACK_BYTES)
active = min(slots, 5 if psram else 2)
potential = startup + max(0, active - 2) * (MQTT_CLIENT_STACK_BYTES + MQTT_CLIENT_BUFFER_BYTES)
return {
"budget_scope": "startup minimum with runtime connection admission",
"startup_allowance_bytes": startup,
"startup_active_slot_allowance": min(slots, 2),
"runtime_slot_count": slots,
"maximum_active_slots": active,
"maximum_active_slots_without_psram": min(slots, 2),
"worker_stack_bytes": worker_stack,
"client_task_stack_bytes": MQTT_CLIENT_STACK_BYTES,
"client_task_priority": 5,
"client_rx_tx_buffer_bytes": MQTT_CLIENT_BUFFER_BYTES,
"maximum_slot_stack_buffer_allowance_bytes": potential,
"cold_start_allocation_allowance_bytes": 16384,
"cold_start_dma_admission_free_bytes": 32768,
"cold_start_dma_admission_contiguous_bytes": 8192,
"restart_allocation_allowance_bytes": 8192,
"restart_dma_admission_free_bytes": 24576,
"restart_dma_admission_contiguous_bytes": 8192,
"dma_admission_free_bytes": 16384,
"dma_admission_contiguous_bytes": 4096,
"tls_internal_admission_free_bytes": 61440,
"tls_internal_admission_contiguous_bytes": 17408,
"maximum_runtime_load_qualified": False,
"physical_validation_performed": False,
"limitations": "Maximum TLS/WSS/outbox workload is not covered by the startup allowance; "
"runtime free DMA heap and fragmentation must satisfy connection admission.",
}
def requirements(platform, defines, target):
if platform not in SUPPORTED:
raise ValueError(f"no memory policy for {platform}")
qualified_repeater = integer(defines, "MESH_CLIENT_REPEATER_ONLY", 0) != 0
repeater = qualified_repeater or "repeater" in target.lower()
companion = not qualified_repeater and bool(re.search(r"companion|comp_radio|comp_.*radio", target, re.I))
full = "COMPANION_RADIO_FULL" in defines or "companion_radio_full" in target.lower()
display = str(defines.get("DISPLAY_CLASS", "")).strip('"')
if display == "SCIndicatorDisplay":
# Largest supported runtime canvas is 480 square at four bits/pixel;
# scanout is separately allocated in PSRAM, never included here.
depth = integer(defines, "UI_BUFFER_COLOR_DEPTH", 8)
pixels = 480 * 480 if "INDICATOR_TRANSPORT_RENDER_PROFILE" in defines else 320 * 320
display_heap = (pixels * depth + 7) // 8 + 1024
elif display in DISPLAY_HEAP:
display_heap = DISPLAY_HEAP[display]
else:
raise ValueError(f"add a runtime allocation budget for display {display!r}")
parts = {}
mqtt = None
combined_rak_ethernet = "RAK4631_COMBINED_ETHERNET" in defines
if combined_rak_ethernet and (platform != "NRF52_PLATFORM"
or not {"RAK_4631", "ETHERNET_ENABLED", "OTA_RAK_AUTO_STORE"}.issubset(defines)):
raise ValueError("combined RAK Ethernet budget requires RAK4631 adaptive nRF52 storage")
if (combined_rak_ethernet or platform == "ESP32_PLATFORM") and display == "SSD1306Display":
# The fixed 128x64 driver allocates one 1024-byte framebuffer and
# reuses it after power cycling. Its linked source assertion binds
# framebuffer + complete driver object + allocator overhead to 2 KiB.
# The driver is already linked as a global (124 bytes on ESP32), so
# including it again retains a conservative allocation bound. Other
# display drivers and ordinary non-ESP32 policies are unchanged.
display_heap = 2048
if platform == "NRF52_PLATFORM":
parts["loop_and_callback_stacks"] = integer(defines, "MESH_NRF52_LOOP_STACK_WORDS", 2048) * 4 + 3072
parts["core_usb_filesystems_sensors"] = 12288
if "BLE_PIN_CODE" in defines:
parts["bluetooth_worker_stacks"] = 5920
if combined_rak_ethernet and "WITH_RS232_BRIDGE" in defines:
# The bridge owns a packet/ACK duplicate table as well as its RX
# frame. Its source assertion bounds the object to 2304 bytes;
# retain room for allocation metadata and the UART TX semaphore.
# UART RX/TX arrays are embedded in the already-linked globals.
parts["uart_bridge_and_driver"] = 2560
elif platform == "ESP32_PLATFORM":
parts["core_tasks_usb_filesystems"] = 24576
# MQTT joins with saved runtime credentials even without a compiled SSID
# or OTA seeder. Count its mandatory WiFi stack once with other WiFi uses.
wifi = 49152 if any(name in defines for name in (
"WIFI_SSID", "WIFI_OTA_SEEDER", "WITH_MQTT_BRIDGE")) else 0
ble = 32768 if "BLE_PIN_CODE" in defines else 0
parts["wireless_stacks"] = max(wifi, ble) if "COMPANION_EXCLUSIVE_WIFI_BLE" in defines else wifi + ble
if "WITH_MQTT_BRIDGE" in defines:
mqtt = mqtt_requirements(defines)
parts["mqtt_startup_allowance"] = mqtt["startup_allowance_bytes"]
if "WITH_RS232_BRIDGE" in defines:
# The UART bridge is allocated on enable, alongside WiFi/MQTT.
# RS232Bridge.cpp bounds its object to 2304 bytes. Reserve 2560
# including allocation metadata, plus the unchanged 4 KiB for
# the SDK UART task, buffers and allocator overhead.
parts["uart_bridge_and_driver"] = 2560 + 4096
if "ENABLE_OTA" in defines:
# Existing own-image/manual-source allowance is independent of
# the generic folder leaf/output buffers counted below.
parts["ota_source_scratch"] = 8192
if ("WEBCONFIG_DISABLED" not in defines
and ((companion and "WIFI_SSID" in defines)
or (not companion and "ADMIN_PASSWORD" in defines))):
parts["browser_terminal_session"] = 2048
if "BOARD_HAS_PSRAM" not in defines:
# Larger replies grow on demand only while preserving 32 KiB
# of free internal heap, and shrink after the browser reads.
parts["browser_terminal_scrollback"] = 4096
if "room_server" in target.lower():
# The mailbox is exclusive to Room Server callbacks. JSON's
# real allocator cap and one decoded maximum article coexist;
# ordinary HTTP bodies/responses use the transient margin.
parts["room_browser_mailbox"] = 6656 + 16
parts["room_browser_request_workspace"] = 8192 + 2048 + 16
if repeater:
# Match MyMesh's platform defaults. The post-hook supplies the
# MCU-specific classic ESP32 default before sdkconfig is included.
default_recent = integer(defines, "MESH_RAM_DEFAULT_RECENT_REPEATERS",
256 if "CONFIG_IDF_TARGET_ESP32" in defines else 2048)
count = integer(defines, "MAX_RECENT_REPEATERS", default_recent)
if not integer(defines, "MESH_ENABLE_RECENT_REPEATERS", 1):
count = integer(defines, "MAX_RECENT_REPEATERS", 0)
parts["neighbor_history"] = count * 9 + (16 if count else 0)
else:
parts["core_filesystems_sensors"] = 8192
# Packet bytes plus all three queue tables and allocation overhead.
parts["radio_packet_pool"] = 5120 if companion else 10240
# These tables moved out of .bss, so linker heap bounds now include their
# space. Count it as startup allocation instead; C++ assertions bind the
# per-entry bounds to the production structures.
if qualified_repeater or re.search(r"repeater|room_server|sensor", target, re.I) or "COMPANION_MESH_CLOCK_SYNC" in defines:
client_bytes = 284 if integer(defines, "MESH_CLIENT_REPEATER_ONLY", 0) else 320
parts["client_table"] = integer(defines, "MAX_CLIENTS", 32) * client_bytes + 16
if repeater:
engine = integer(defines, "MESH_ENABLE_FLOOD_RULE_ENGINE", int(platform != "STM32_PLATFORM"))
slots = integer(defines, "FLOOD_PACKET_FILTER_SLOTS", 63 if engine else 16)
parts["flood_filter_table"] = slots * (192 if engine else 40) + 16
if "room_server" in target.lower() and integer(
defines, "MESH_ENABLE_ROOM_FLOOD_RULE_ENGINE", 0):
# FloodRuleEngine keeps all 31 persisted rules in one startup heap
# allocation. Its C++ assertion pins Entry to the budgeted 192 bytes.
parts["room_flood_rule_table"] = 31 * 192 + 16
if "ENABLE_OTA" in defines and "OTA_HEAP_CONTEXT" in defines:
parts["ota_context"] = 16384 + 16
if "ENABLE_OTA" in defines:
# These are lazy on every platform. Freeing static arrays increases
# linked heap capacity but cannot erase their active-operation cost.
# Leaves are sized to the selected source, up to the unchanged limit;
# output holds only one block. They can overlap self-serving/fetching.
leaf_limit = integer(defines, "OTA_PROOFGEN_SCRATCH",
16384 if platform == "ESP32_PLATFORM" else
8192 if "OTA_SD_STORE" in defines else 4096)
block_size = integer(defines, "OTA_MAX_BLOCK", 2048)
parts["ota_generic_source_buffers"] = leaf_limit + block_size + 32
# Match OtaDeflateConfig.h's compile eligibility and build-role override.
# Adaptive RAK may qualify only at runtime; reserve its worst eligible case.
# The shared role hook qualifies sources, not environment names. An
# infrastructure recipe can inherit a Companion-named custom environment.
device_deflate = ("ENABLE_OTA" in defines and "OTA_SEEDER_ONLY" not in defines
and integer(defines, "MESHCORE_OTA_DEVICE_DEFLATE", 0) != 0
and (platform == "ESP32_PLATFORM" or
(platform == "NRF52_PLATFORM" and any(name in defines for name in
("OTA_QSPI_STORE", "OTA_SD_STORE", "OTA_RAK_AUTO_STORE")))))
if device_deflate:
hash_bits = integer(defines, "MESHCORE_OTA_DEFLATE_HASH_BITS", 9)
if not 7 <= hash_bits <= 10:
raise ValueError("device DEFLATE hash must have 128..1024 entries")
# The encoder uses input offsets, not pointers: sizeof(uint16_t) per
# bucket on every platform. This allocation is freed before radio TX.
parts["ota_encoder_workspace"] = (1 << hash_bits) * 2 + 16
if ("ENABLE_OTA" in defines and platform == "NRF52_PLATFORM"
and "OTA_SEEDER_ONLY" not in defines and any(name in defines for name in (
"OTA_QSPI_STORE", "OTA_SD_STORE", "OTA_RAK_AUTO_STORE", "OTA_TOWER_AUTO_STORE"))):
# Own-image leaves/output also exist without a device encoder. The
# running nRF52840 app is <1 MiB: <=512 2-KiB leaves. Compression needs
# one block; raw diagnostic serving retains a leaf-sized output.
parts["ota_self_source_scratch"] = 2 * 2048 + 2 * 16
if combined_rak_ethernet:
words = integer(defines, "RAK4631_ETHERNET_TASK_STACK_WORDS", 1024)
if words < 1024:
raise ValueError("combined RAK Ethernet task requires at least 1024 stack words")
tx_capacity = integer(defines, "ETHERNET_CLI_TX_BUFFER_BYTES", 512)
if not 512 <= tx_capacity <= 2048:
raise ValueError("combined RAK Ethernet TX queue requires 512..2048 bytes")
# Ethernet owns the shared bus only after rejecting live/pinned OTA
# sessions and freeing the external self-source buffers. While it owns
# that bus, OTA encoder/self-source entry points refuse allocation.
# On shutdown the main loop deletes the parked worker synchronously
# and frees its TX queue before releasing ownership, so its stack
# cannot await idle cleanup
# while external OTA workspaces are allocated again.
# UART can remain enabled in either mode, so its budget stays above.
# The library's function-static DHCP object and SPI/socket globals are
# already present in the linked image. The bounded TCP TX queue is
# allocated only while Ethernet is enabled; reserve its capacity plus
# 64 bytes for allocator overhead alongside the worker stack and TCB.
external_ota = sum(parts.pop(name, 0) for name in (
"ota_encoder_workspace", "ota_self_source_scratch", "ota_generic_source_buffers"))
parts["ethernet_or_external_ota_workspaces"] = max(words * 4 + 256 + tx_capacity + 64,
external_ota)
if display and display != "NullDisplayDriver":
parts["display_pixels_and_driver"] = display_heap
screen_budget = integer(defines, "MESH_COMPANION_SCREEN_STARTUP_BYTES", 0)
if companion and screen_budget:
# A target using this override has a source-side static assertion
# that covers its concrete startup screens and allocator overhead.
parts["screen_objects_and_history"] = screen_budget
else:
parts["screen_objects_and_history"] = 8192 if companion else 2048
if companion:
# ui-new retains 32 previews in one heap allocation. The baseline
# covers 78 bytes per message; budget larger buffers explicitly,
# including worst-case 8-byte Entry alignment.
small_display = display in {
"SSD1306Display", "SH1106Display", "ST7735Display", "U8g2Display",
}
small_font = integer(defines, "UI_SMALL_MESSAGE_FONT", int(small_display))
default_preview = 161 if small_font else 78
extra = max(0, integer(defines, "UI_MSG_PREVIEW_SIZE", default_preview) - 78)
if extra and not screen_budget:
parts["expanded_message_previews"] = 32 * ((extra + 7) // 8) * 8
parts["allocation_and_transient_margin"] = 16384 if platform == "ESP32_PLATFORM" else 4096
required = sum(parts.values())
if platform == "NRF52_PLATFORM" and full and display == "ST7735Display":
required = max(required, 73728)
# A new profile may increase this budget; it cannot override it downward.
required = max(required, integer(defines, "MESH_MIN_RUNTIME_HEAP", 0))
largest = max(display_heap, parts["radio_packet_pool"], 8192 if platform == "ESP32_PLATFORM" else 0)
if "expanded_message_previews" in parts:
largest = max(largest, 8192 + parts["expanded_message_previews"])
for name in ("client_table", "flood_filter_table", "room_flood_rule_table", "neighbor_history",
"ota_context", "screen_objects_and_history", "ota_encoder_workspace",
"ota_generic_source_buffers", "ethernet_or_external_ota_workspaces"):
largest = max(largest, parts.get(name, 0))
if "room_browser_mailbox" in parts:
largest = max(largest, 8192, parts["room_browser_mailbox"])
if mqtt:
largest = max(largest, mqtt["worker_stack_bytes"], mqtt["client_task_stack_bytes"])
result = {"required_heap_bytes": required, "required_contiguous_bytes": largest,
"components": parts, "display": display, "full_companion": full}
if mqtt:
result["mqtt"] = mqtt
return result
def subtract_regions(regions, reserved):
result = list(regions)
for lower, upper in reserved:
if lower > upper:
raise ValueError("reversed reserved memory range")
lower, upper = lower & ~3, (upper + 3) & ~3
next_regions = []
for start, end, kind in result:
if upper <= start or lower >= end:
next_regions.append((start, end, kind))
else:
if start < lower:
next_regions.append((start, lower, kind))
if upper < end:
next_regions.append((upper, end, kind))
result = next_regions
merged = []
for start, end, kind in sorted(result):
if end - start <= 16:
continue
if merged and start < merged[-1][1]:
raise ValueError("overlapping internal heap regions")
if merged and start == merged[-1][1] and kind == merged[-1][2]:
merged[-1] = (merged[-1][0], end, kind)
else:
merged.append((start, end, kind))
return merged
def esp32_heap_regions(elf, mcu):
count = elf.words("soc_memory_region_count")[0]
size = elf.symbols["soc_memory_regions"][1]
if not count or count > 256 or size % count:
raise ValueError("invalid ESP-IDF memory-region table")
stride = size // count
if stride not in (16, 20):
raise ValueError(f"unsupported ESP-IDF memory-region ABI ({stride} bytes)")
# IDF 4 puts startup_stack/alias flags in each type; current IDF 5 puts
# startup_stack in each region. Read the actual linked ABI and capabilities.
type_stride = 20 if stride == 16 else 16
type_size = elf.symbols["soc_memory_types"][1]
if not type_size or type_size % type_stride:
raise ValueError("unsupported ESP-IDF memory-type ABI")
types = []
for i in range(type_size // type_stride):
row = elf.read(elf.address("soc_memory_types") + i * type_stride, type_stride)
_, a, b, c = struct.unpack_from("<4I", row)
types.append((a | b | c, bool(row[17]) if type_stride == 20 else False))
regions = []
for i in range(count):
row = elf.read(elf.address("soc_memory_regions") + i * stride, stride)
start, length, kind, _ = struct.unpack_from("<4I", row)
if kind >= len(types) or not length or start + length > 0x100000000:
raise ValueError("invalid ESP-IDF heap region")
caps, startup = types[kind]
if stride == 20:
startup = bool(row[16])
# MALLOC_CAP_INTERNAL | MALLOC_CAP_8BIT, excluding external and RTC RAM.
if caps & 0x804 != 0x804 or caps & (0x400 | 0x8000):
continue
# New chips read a ROM reservation table at boot. Exclude their entire
# late-reclaimed ROM-stack region so unknown silicon reservations can
# never inflate the budget. Classic ESP32 has fixed linked reservations.
if startup and mcu != "esp32":
continue
regions.append((start, start + length, kind))
start = elf.address("soc_reserved_memory_region_start")
end = elf.address("soc_reserved_memory_region_end")
if end < start or (end - start) % 8 or end - start > 8192:
raise ValueError("invalid ESP-IDF reservation table")
reservations = list(struct.iter_unpack("<2I", elf.read(start, end - start)))
return subtract_regions(regions, reservations)
def heap_regions(elf, platform, mcu):
if platform == "ESP32_PLATFORM":
return esp32_heap_regions(elf, mcu)
if platform == "NRF52_PLATFORM":
start, end = elf.address("__HeapBase"), elf.address("__HeapLimit")
elif platform == "RP2040_PLATFORM":
start, end = elf.address("__end__"), elf.address("__HeapLimit")
elif platform == "STM32_PLATFORM":
start = elf.address("_end")
end = elf.address("_estack") - elf.address("_Min_Stack_Size")
else:
raise ValueError(f"unsupported platform {platform}")
if not 0x20000000 <= start < end <= 0x30000000:
raise ValueError("invalid ARM runtime heap boundaries")
return [(start, end, 0)]
def check_firmware(elf_path, platform, mcu, defines, target, output=None):
elf = FirmwareElf(elf_path)
if platform == "ESP32_PLATFORM":
defines = {**defines, "MESH_RAM_DEFAULT_RECENT_REPEATERS": 256 if str(mcu).lower() == "esp32" else 2048}
policy = requirements(platform, defines, target)
regions = heap_regions(elf, platform, mcu)
available = sum(end - start for start, end, _ in regions)
largest = max((end - start for start, end, _ in regions), default=0)
passed = available >= policy["required_heap_bytes"] and largest >= policy["required_contiguous_bytes"]
report = {"schema_version": 1, "target": target, "platform": platform, "mcu": mcu,
"elf_sha256": hashlib.sha256(elf.data).hexdigest(), "passed": passed,
"available_internal_bytes": available, "largest_internal_region_bytes": largest,
**policy, "regions": [{"start": start, "end": end} for start, end, _ in regions],
"scope": "Linked capacity before runtime allocation; physical boot/load/soak validation remains required."}
if output:
Path(output).write_text(json.dumps(report, indent=2) + "\n")
print(f"Runtime RAM: {available:,} internal bytes available; {policy['required_heap_bytes']:,} required; "
f"largest region {largest:,}; {'PASS' if passed else 'FAIL'}")
if "mqtt" in policy:
print("MQTT RAM scope: startup minimum with runtime admission; "
"maximum TLS/WSS/outbox load is not qualified by this build check.")
if not passed:
print("Runtime RAM check failed: insufficient heap for enabled features. "
"Share cold buffers or reduce allocations before publishing this build.", file=sys.stderr)
return 0 if passed else 1
def register_platformio(env):
definitions = {}
for item in env.get("CPPDEFINES", []):
if isinstance(item, (tuple, list)):
definitions[str(item[0])] = item[1] if len(item) > 1 else 1
else:
definitions[str(item)] = 1
platforms = SUPPORTED.intersection(definitions)
if not platforms:
if env.subst("$PIOENV").startswith("native"):
return
raise ValueError("firmware build has no recognized RAM policy platform")
if len(platforms) != 1:
raise ValueError("firmware build has conflicting platform definitions")
platform = next(iter(platforms))
mcu = str(env.BoardConfig().get("build.mcu", "")).lower()
target = env.subst("$PIOENV")
def check(source, target, env):
path = Path(env.subst("$BUILD_DIR/${PROGNAME}.elf"))
output = Path(env.subst("$BUILD_DIR/${PROGNAME}.memory.json"))
try:
result = check_firmware(path, platform, mcu, definitions,
env.subst("$PIOENV"), output)
return result
except (OSError, ValueError, KeyError, struct.error) as error:
print(f"Runtime RAM check failed: {error}", file=sys.stderr)
return 2
for alias in ("checkprogsize", "mergebin", "upload"):
env.AddPreAction(env.Alias(alias), check)
for suffix in ("bin", "hex", "uf2", "zip"):
env.AddPreAction("$BUILD_DIR/${PROGNAME}." + suffix, check)
def main():
parser = argparse.ArgumentParser(description=__doc__)
parser.add_argument("elf", type=Path)
parser.add_argument("--platform", required=True, choices=sorted(SUPPORTED))
parser.add_argument("--mcu", required=True)
parser.add_argument("--target", required=True)
parser.add_argument("--defines", type=Path, help="JSON object of resolved build definitions")
parser.add_argument("--output", type=Path)
args = parser.parse_args()
try:
defines = json.loads(args.defines.read_text()) if args.defines else {}
return check_firmware(args.elf, args.platform, args.mcu, defines, args.target, args.output)
except (OSError, ValueError, KeyError, struct.error) as error:
print(f"Runtime RAM check failed: {error}", file=sys.stderr)
return 2
try:
Import("env") # noqa: F821 -- PlatformIO/SCons
except NameError:
if __name__ == "__main__":
raise SystemExit(main())
else:
register_platformio(env) # noqa: F821