fix: 统一R8工程目标并修复MDK编译前置问题

Drivers/LwIP/port/sys_arch.c

@@ -4,6 +4,7 @@
  */
 
 #include "lwip/opt.h"
+#include "lwip/mem.h"
 #include "lwip/sys.h"
 #include "lwip/stats.h"
 #include "arch/sys_arch.h"
@@ -15,6 +16,8 @@
 
 #include <string.h>
 
+int errno;
+
 /* Timeout for infinite wait */
 #define LWIP_ARCH_TICK_PER_MS   (1000 / configTICK_RATE_HZ)
 

Drivers/LwIP/src/include/arch/cc.h

@@ -9,6 +9,7 @@
 #include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include "lwip/errno.h"
 
 /* Use standard integer types from stdint.h */
 #define LWIP_NO_STDINT_H  0

Drivers/LwIP/src/include/arch/lwipopts.h

@@ -31,6 +31,9 @@
 #define MEM_LIBC_MALLOC                 0
 #define MEMP_MEM_MALLOC                 0
 
+/* Let lwIP provide the errno values used by sockets/netconn. */
+#define LWIP_PROVIDE_ERRNO              1
+
 /*-----------------------------------------------------------------------------
  * Memory Configuration (optimized for STM32F103 with ~20KB RAM)
  *---------------------------------------------------------------------------*/
@@ -63,7 +66,7 @@
 #define MEMP_NUM_TCP_PCB_LISTEN         2
 
 /* Number of simultaneously queued TCP segments */
-#define MEMP_NUM_TCP_SEG                12
+#define MEMP_NUM_TCP_SEG                17
 
 /* Number of simultaneously active timeouts */
 #define MEMP_NUM_SYS_TIMEOUT            8

Drivers/LwIP/src/include/arch/sys_arch.h

@@ -37,6 +37,36 @@ typedef u32_t sys_prot_t;
 #define SYS_MBOX_NULL   ((sys_mbox_t)NULL)
 #define SYS_MUTEX_NULL  ((sys_mutex_t)NULL)
 
+/* Use one per-thread semaphore for lwIP netconn/socket API calls. */
+#define LWIP_NETCONN_THREAD_SEM_TLS_INDEX  0
+#define LWIP_NETCONN_THREAD_SEM_GET() \
+    ((sys_sem_t *)pvTaskGetThreadLocalStoragePointer(NULL, LWIP_NETCONN_THREAD_SEM_TLS_INDEX))
+#define LWIP_NETCONN_THREAD_SEM_ALLOC()                                             \
+    do {                                                                            \
+        sys_sem_t *sem = (sys_sem_t *)mem_malloc(sizeof(sys_sem_t));                \
+        if (sem != NULL) {                                                          \
+            *sem = SYS_SEM_NULL;                                                    \
+            if (sys_sem_new(sem, 0) == ERR_OK) {                                    \
+                vTaskSetThreadLocalStoragePointer(NULL,                             \
+                                                  LWIP_NETCONN_THREAD_SEM_TLS_INDEX,\
+                                                  sem);                             \
+            } else {                                                                \
+                mem_free(sem);                                                      \
+            }                                                                       \
+        }                                                                           \
+    } while (0)
+#define LWIP_NETCONN_THREAD_SEM_FREE()                                              \
+    do {                                                                            \
+        sys_sem_t *sem = LWIP_NETCONN_THREAD_SEM_GET();                             \
+        if (sem != NULL) {                                                          \
+            sys_sem_free(sem);                                                      \
+            mem_free(sem);                                                          \
+            vTaskSetThreadLocalStoragePointer(NULL,                                 \
+                                              LWIP_NETCONN_THREAD_SEM_TLS_INDEX,    \
+                                              NULL);                                \
+        }                                                                           \
+    } while (0)
+
 /* Check if semaphore/mbox is valid */
 #define sys_sem_valid(sem)      ((sem) != NULL && (*(sem)) != SYS_SEM_NULL)
 #define sys_sem_set_invalid(sem) do { if ((sem) != NULL) { *(sem) = SYS_SEM_NULL; } } while(0)