TX timeout must also be cancelled on a TX error. TX timeout should check if we are waiting for a TXto complete. TX timeout was too short (short than the maximum number of retries).

configs/b-l475e-iot01a/README.txt

@@ -523,15 +523,10 @@ Configuration sub-directories
         length to 84 and that did NOT eliminate the RX FIFO error.
 
         At the end of the TCP test, the "nsh> ifconfig" command shows that
-        there were two TX timeouts.  Perhaps this is related?  The TX timeout
+        there were two TX timeouts.  Perhaps this is related?  I found that
-        is set to 5 seconds, so this could be a serious performance issue.
+        the TX timeout was not being cancelled.  It must be canceled on each
-
+        TX completed or TX error.  This DID eliminate the RX FIFO error, but
-        So for now I have to live with the RX FIFO error.  I have observed
+        now the test hangs and does not complete.
-        only a single RX FIFO error and it occurs at the same place in the
-        the TCP test (when the data is turned around and sent back to the
-        client).  the UDP test and Telnet work perfectly.  The RX FIFO error
-        is handled perfectly and, since it is TCP, there is no loss of data
-        and all tests pass.  That is as good as I can do for now.
 
         Another Errata:  "Using the STack packet format and no CRC field, the
         reading from RX FIFO to the last received byte, is not possible. ..."
@@ -542,4 +537,3 @@ Configuration sub-directories
 
         Reducing the FIFO to 94 bytes fixed the problem with the 2 byte CRC
         but did not resolve that occasional RX FIFO error.
-

drivers/bch/Make.defs

@@ -38,9 +38,9 @@ ifneq ($(CONFIG_DISABLE_MOUNTPOINT),y)
 
 # Include BCH driver
 
-CSRCS += bchlib_setup.c bchlib_teardown.c bchlib_read.c bchlib_write.c \
+CSRCS += bchlib_setup.c bchlib_teardown.c bchlib_read.c bchlib_write.c
-		 bchlib_cache.c bchlib_sem.c bchdev_register.c bchdev_unregister.c \
+CSRCS += bchlib_cache.c bchlib_sem.c bchdev_register.c bchdev_unregister.c
-		 bchdev_driver.c
+CSRCS += bchdev_driver.c
 
 # Include BCH driver build support
 

drivers/wireless/spirit/drivers/spirit_netdev.c

@@ -232,14 +232,20 @@
 
 #define SPIRIT_WDDELAY      (1*CLK_TCK)
 
-/* TX timeout = 5 seconds */
+/* Maximum number of retries (10) */
 
-#define SPIRIT_TXTIMEOUT    (5*CLK_TCK)
+#define SPIRIT_MAX_RETX     PKT_N_RETX_10
 
-/* RX timeout = 1.5 seconds */
+/* RX timeout = 1.5 seconds.  Transmitter will wait this amount timer for
+ * an ACK from the receiver (per transmission).
+ */
 
 #define SPIRIT_RXTIMEOUT    1500.0
 
+/* Failsafe TX timeout = MAX_RETX * RXTIMEOUT + 1 = 16 seconds */
+
+#define SPIRIT_TXTIMEOUT    (16*CLK_TCK)
+
 /****************************************************************************
  * Private Types
  ****************************************************************************/
@@ -1081,10 +1087,16 @@ static void spirit_interrupt_work(FAR void *arg)
       DEBUGVERIFY(spirit_command(spirit, COMMAND_FLUSHTXFIFO));
       irqstatus.IRQ_TX_DATA_SENT = 0;
 
-      /* Revert the sending state */
+      /* Were we in the sending state? */
 
       if (priv->state == DRIVER_STATE_SENDING)
         {
+          /* Yes.. Cancel the TX timeout */
+
+          wd_cancel(priv->txtimeout);
+
+          /* Revert the sending state */
+
           priv->state = DRIVER_STATE_IDLE;
         }
 
@@ -1106,7 +1118,7 @@ static void spirit_interrupt_work(FAR void *arg)
     {
       wlinfo("Data sent\n");
 
-      /* Disable the TX timeout */
+      /* Cancel the TX timeout */
 
       wd_cancel(priv->txtimeout);
 
@@ -1407,10 +1419,10 @@ static void spirit_interrupt_work(FAR void *arg)
 
   if (irqstatus.IRQ_RX_DATA_DISC != 0)
     {
-      wlinfo("Data discarded: Node addr=%02x RX dest addr=%02x\n",
+      wlwarn("WARNING: Data discarded: Node addr=%02x RX dest addr=%02x\n",
              spirit_pktcommon_get_nodeaddress(spirit),
              spirit_pktcommon_get_rxdestaddr(spirit));
-      wlinfo("                CRC error=%u RX timeout=%u\n",
+      wlwarn("                         CRC error=%u RX timeout=%u\n",
              irqstatus.IRQ_CRC_ERROR, irqstatus.IRQ_RX_TIMEOUT);
 
       /* Flush the RX FIFO and revert the receiving state */
@@ -1500,10 +1512,18 @@ static void spirit_txtimeout_work(FAR void *arg)
 {
   FAR struct spirit_driver_s *priv = (FAR struct spirit_driver_s *)arg;
 
+  wlwarn("WARNING: TX Timeout.  state=%u\n", priv->state);
+
+  /* Are we in the sending state?  If not, then this must be a spurious
+   * timout.
+   */
+
+  if (priv->state == DRIVER_STATE_SENDING)
+    {
       /* Lock the network and serialize driver operations if necessary.
-   * NOTE: Serialization is only required in the case where the driver work
+       * NOTE: Serialization is only required in the case where the driver
-   * is performed on an LP worker thread and where more than one LP worker
+       * work is performed on an LP worker thread and where more than one LP
-   * thread has been configured.
+       * worker thread has been configured.
        */
 
       net_lock();
@@ -1517,12 +1537,13 @@ static void spirit_txtimeout_work(FAR void *arg)
       spirit_ifdown(&priv->radio.r_dev);
       spirit_ifup(&priv->radio.r_dev);
 
-  /* Then schedule to poll the network for new XMIT data on the LP worker
+      /* Then schedule to poll the network for new XMIT data on the LP
-   * thread.
+       * worker thread.
        */
 
       work_queue(LPWORK, &priv->pollwork, spirit_txpoll_work, priv, 0);
       net_unlock();
+    }
 }
 
 /****************************************************************************