optimize plc motor test and fix the lwip mutex and sem error

Ubiquitous/XiZi/resources/ethernet/LwIP/arch/sys_arch.c

@@ -184,7 +184,7 @@ sys_sem_free(sys_sem_t *sem)
 
 int sys_sem_valid(sys_sem_t *sem)
 {
-  return (*sem >= SYS_SEM_NULL);
+  return (*sem > SYS_SEM_NULL);
 }
 
 void
@@ -212,7 +212,7 @@ u32_t sys_arch_sem_wait(sys_sem_t *sem, u32_t timeout)
 
 
   if(KSemaphoreObtain(*sem, wait_time) == EOK)
-    return ((CurrentTicksGain()-start_tick)*MS_PER_SYSTICK_F407);
+    return ((CurrentTicksGain()-start_tick)*MS_PER_SYSTICK);
   else
     return SYS_ARCH_TIMEOUT;
 }
@@ -226,7 +226,7 @@ void sys_sem_signal(sys_sem_t *sem)
 err_t sys_mutex_new(sys_mutex_t *mutex)
 {
   *mutex = KMutexCreate();
-  if(*mutex >= 0)
+  if(*mutex > SYS_MRTEX_NULL)
     return ERR_OK;
   else
   {
@@ -344,7 +344,7 @@ u32_t sys_arch_mbox_fetch(sys_mbox_t *q, void **msg, u32_t timeout)
     wait_time = timeout;
 
   if(KMsgQueueRecv(*q, &(*msg), sizeof(void *), wait_time) == EOK)
-    return ((CurrentTicksGain()-start_tick)*MS_PER_SYSTICK_F407);
+    return ((CurrentTicksGain()-start_tick)*MS_PER_SYSTICK);
   else{
     *msg = NULL;
     return SYS_ARCH_TIMEOUT;
@@ -446,7 +446,6 @@ void lwip_input_thread(void *param)
         /* Poll the driver, get any outstanding frames */
         ethernetif_input(net);
         sys_check_timeouts(); /* Handle all system timeouts for all core protocols */
-        KPrintf("");
     }
   }
 }

Ubiquitous/XiZi/resources/ethernet/LwIP/arch/sys_arch.h

@@ -62,7 +62,7 @@
 
 /* USER CODE END 0 */
 #define SYS_MBOX_NULL  -1
-#define SYS_SEM_NULL   0
+#define SYS_SEM_NULL   -1
 #define SYS_MRTEX_NULL SYS_SEM_NULL
 
 typedef int32 sys_sem_t;
@@ -71,7 +71,7 @@ typedef int32 sys_mbox_t;
 typedef int32 sys_thread_t;
 typedef x_base sys_prot_t;
 
-#define MS_PER_SYSTICK_F407 (1000 / TICK_PER_SECOND)
+#define MS_PER_SYSTICK (1000 / TICK_PER_SECOND)
 
 //debug rtos with IRQ
 //#define FSL_RTOS_XIUOS

Ubiquitous/XiZi/tool/shell/letter-shell/shell.c

@@ -1652,7 +1652,6 @@ void shellTask(void *param)
                 shellHandler(shell, data[i]);
             }
         }
-        KPrintf("");
     }
 }