u-blox odin w2 drivers update

features/FEATURE_LWIP/lwip-interface/emac_stack_lwip.cpp

@@ -47,6 +47,11 @@ void emac_stack_mem_free(emac_stack_t* stack, emac_stack_mem_t *mem)
     pbuf_free((struct pbuf*)mem);
 }
 
+void emac_stack_mem_copy(emac_stack_t* stack, emac_stack_mem_t *to, emac_stack_mem_t *from)
+{
+    pbuf_copy((struct pbuf*)to, (struct pbuf*)from);
+}
+
 void *emac_stack_mem_ptr(emac_stack_t* stack, emac_stack_mem_t *mem)
 {
     return ((struct pbuf*)mem)->payload;

features/netsocket/emac_stack_mem.h

@@ -49,6 +49,15 @@ emac_stack_mem_t *emac_stack_mem_alloc(emac_stack_t* stack, uint32_t size, uint3
  */
 void emac_stack_mem_free(emac_stack_t* stack, emac_stack_mem_t *mem);
 
+/**
+ * Copy memory
+ *
+ * @param  stack Emac stack context
+ * @param to Memory to copy to
+ * @param from Memory to copy from
+ */
+void emac_stack_mem_copy(emac_stack_t* stack, emac_stack_mem_t *to, emac_stack_mem_t *from);
+
 /**
  * Return pointer to the payload
  *

targets/TARGET_STM/TARGET_STM32F4/TARGET_UBLOX_EVK_ODIN_W2/sdk/ublox-odin-w2-drivers/OdinWiFiInterface.h

@@ -22,6 +22,7 @@
 #include "mbed_events.h"
 
 #include "rtos.h"
+#include "cmsis_os.h"
 #include "emac_api.h"
 #include "nsapi_types.h"
 #include "lwip/netif.h"
@@ -211,8 +212,9 @@ class OdinWiFiInterface : public WiFiInterface
     int32_t target_id;
     // Event queue for sending start up and connection events from driver to this class
     MsgQueue _event_queue;
-    // Event queue for sending scan events from driver to this class
-    MsgQueue _scan_event_queue;    
+    // Message queue for sending scan events from driver to this class
+    osMessageQId _scan_msg_queue_id;
+    osMessageQDef_t _queue_def;
 };
 
 #endif

targets/TARGET_STM/TARGET_STM32F4/TARGET_UBLOX_EVK_ODIN_W2/sdk/ublox-odin-w2-drivers/cb_main.h

@@ -110,6 +110,7 @@ extern void cbMAIN_startOS(void);
 /**
 * Get event queue. Used for running a function in the same thread context as the driver.
 * Can not be called before cbMAIN_initOS/cbMAIN_initBt/cbMAIN_initWlan.
+* Use cbMAIN_dispatchEventQueue to trigger the driver to call the queued up functions.
 * @return EventQueue     Pointer to the event queue where function calls can be enqueued.
 */
 extern EventQueue* cbMAIN_getEventQueue(void);
@@ -128,4 +129,11 @@ extern void cbMAIN_driverLock(void);
 */
 extern void cbMAIN_driverUnlock(void);
 
+/**
+* Dispatch event queue. Should be called to trigger calls that have been queued up in the driver context
+*
+* @return void
+*/
+extern void cbMAIN_dispatchEventQueue(void);
+
 #endif /*_CB_MAIN_H_*/

targets/TARGET_STM/TARGET_STM32F4/TARGET_UBLOX_EVK_ODIN_W2/sdk/wifi_emac/wifi_emac_api.cpp

@@ -266,8 +266,17 @@ static bool wifi_link_out(emac_interface_t *emac, emac_stack_mem_t *buf)
 {
     (void)emac;
     // Break call chain to avoid the driver affecting stack usage for the IP stack thread too much
-    emac_stack_mem_ref(emac,buf);
-    cbMAIN_getEventQueue()->call(send_packet,emac,buf);
+    emac_stack_mem_t *new_buf = emac_stack_mem_alloc(emac, emac_stack_mem_chain_len(emac,buf),0);
+    if (new_buf != NULL) {
+        emac_stack_mem_copy(emac, new_buf, buf);
+        int id = cbMAIN_getEventQueue()->call(send_packet, emac, new_buf);
+        if (id != 0) {
+            cbMAIN_dispatchEventQueue();        
+        }
+        else {
+            emac_stack_mem_free(emac, new_buf);
+        }
+    }
     return true;
 }