[libretiny] Shorten the LN882x zero-size allocation comment

[libretiny] Trim the LN882x zero-size allocation comments
[libretiny] Keep zero-size allocations from hanging the LN882x
2026-10-15 02:32:49 +00:00 · 2026-10-04 21:55:28 -05:00 · 2026-10-04 18:50:42 -05:00 · 2026-10-04 18:01:26 -05:00
2 changed files with 18 additions and 0 deletions
@@ -32,6 +32,7 @@ from esphome.storage_json import StorageJSON
 from . import gpio  # noqa: F401
 from .const import (
    COMPONENT_BK72XX,
+    COMPONENT_LN882X,
    CONF_GPIO_RECOVER,
    CONF_LOGLEVEL,
    CONF_SDK_SILENT,
@@ -490,6 +491,10 @@ async def component_to_code(config):
        # Not enabled on RTL87xx/LN882x — costs more heap than it saves there.
        cg.add_build_flag("-DconfigSUPPORT_STATIC_ALLOCATION=1")

+    # LN882x: a zero-size allocation must not trip the SDK's assert (see ln882x_zero_malloc.c).
+    if config[CONF_COMPONENT_ID] == COMPONENT_LN882X:
+        cg.add_build_flag("-Wl,--wrap=pvPortMalloc")
+
    # RTL8710B needs FreeRTOS 8.2.3+ for xTaskNotifyGive/ulTaskNotifyTake
    # required by AsyncTCP 3.4.3+ (https://github.com/esphome/esphome/issues/10220)
    # RTL8720C (ambz2) requires FreeRTOS 10.x so this only applies to RTL8710B
@@ -0,0 +1,13 @@
+// LN882x: a zero-size pvPortMalloc trips the SDK's malloc-failed LN_ASSERT; ask for 1 byte instead.
+
+#ifdef USE_LN882X
+
+#include <stddef.h>
+
+void *__real_pvPortMalloc(size_t size);  // NOLINT(readability-identifier-naming)
+
+void *__wrap_pvPortMalloc(size_t size) {  // NOLINT(readability-identifier-naming)
+  return __real_pvPortMalloc(size == 0 ? 1 : size);
+}
+
+#endif  // USE_LN882X
Author	SHA1	Message	Date
J. Nick Koston	5a92428bde	[libretiny] Shorten the LN882x zero-size allocation comment	2026-10-04 21:55:28 -05:00
J. Nick Koston	372f13ccce	[libretiny] Trim the LN882x zero-size allocation comments	2026-10-04 18:50:42 -05:00
J. Nick Koston	e2bae54644	[libretiny] Keep zero-size allocations from hanging the LN882x	2026-10-04 18:01:26 -05:00