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ESP: lwIP fixes #908

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Merged
Grazfather merged 5 commits into from
Feb 13, 2026
Merged

ESP: lwIP fixes #908

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b07f699
update lwIP to v2.2.1 and use the official GitHub mirror
andreacoradi Feb 12, 2026
41ce95b
add adc.c to the needed files to build
andreacoradi Feb 12, 2026
009d1b9
add lwip_assert_core_locked
andreacoradi Feb 13, 2026
eb46860
Merge branch 'main' into esp-lwip-fixes
andreacoradi Feb 13, 2026
641e59c
merge fix
andreacoradi Feb 13, 2026
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7 changes: 7 additions & 0 deletions examples/espressif/esp/src/lwip/exports.zig
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Original file line number Diff line number Diff line change
Expand Up @@ -24,6 +24,13 @@ export fn lwip_unlock_core_mutex() void {
core_mutex.unlock();
}

export fn lwip_assert_core_locked() void {
if (c.lock_tcpip_core == null) return;

const mutex: *rtos.Mutex = @ptrCast(@alignCast(c.lock_tcpip_core));
std.debug.assert(mutex.locked != null);
}

export fn lwip_rand() u32 {
return esp.rng.random_u32();
}
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3 changes: 3 additions & 0 deletions examples/espressif/esp/src/lwip/include/arch/cc.h
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Expand Up @@ -9,9 +9,12 @@ typedef unsigned int sys_prot_t;
extern uint32_t lwip_rand(void);
extern void lwip_lock_core_mutex();
extern void lwip_unlock_core_mutex();
extern void lwip_assert_core_locked();
extern void lwip_assert(const char *msg, const char *file, int line);
extern void lwip_diag(const char *msg, const char *file, int line);

#define LWIP_ASSERT_CORE_LOCKED() do { lwip_assert_core_locked(); } while (0)

#define LWIP_PLATFORM_DIAG(x) \
do { \
lwip_diag((msg), __FILE__, __LINE__); \
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1 change: 1 addition & 0 deletions modules/lwip/build.zig
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Expand Up @@ -72,6 +72,7 @@ const files = [_][]const u8{
"core/ipv4/ip4_addr.c",
"core/ipv4/igmp.c",
"core/ipv4/icmp.c",
"core/ipv4/acd.c",

// IPv6 implementation:
"core/ipv6/icmp6.c",
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6 changes: 3 additions & 3 deletions modules/lwip/build.zig.zon
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Expand Up @@ -7,9 +7,9 @@
},
.dependencies = .{
.lwip = .{
//.url = "https://download.savannah.nongnu.org/releases/lwip/lwip-2.1.3.zip",
.url = "https://github.com/Ashet-Technologies/deps/raw/refs/heads/main/lwip-2.1.3.zip",
.hash = "N-V-__8AAKCP6ADEah-rtpC4uEsB_-GFFCqsNInUAJY7bH3S",
// .url = "https://download.savannah.nongnu.org/releases/lwip/lwip-2.2.1.zip",
.url = "https://github.com/lwip-tcpip/lwip/archive/refs/tags/STABLE-2_2_1_RELEASE.zip",
.hash = "N-V-__8AAGSTdQCcOKeNITCRoYez502saFXZqz4ucBJ4xTa9",
},
},
}