From d45f18cc8d310e71eb63f094b9367d2c6195b077 Mon Sep 17 00:00:00 2001
From: Richard Barry <ribarry@amazon.com>
Date: Fri, 13 Jun 2014 14:06:43 +0000
Subject: [PATCH] Add additional comments to the Zynq lwIP demo.

---
 .../RTOSDemo/src/lwIP_Demo/lwIP_port/sys_arch.c |  1 -
 .../RTOSDemo/src/lwIP_Demo/main_lwIP.c          | 17 ++++++++++++++++-
 2 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/FreeRTOS/Demo/CORTEX_A9_Zynq_ZC702/RTOSDemo/src/lwIP_Demo/lwIP_port/sys_arch.c b/FreeRTOS/Demo/CORTEX_A9_Zynq_ZC702/RTOSDemo/src/lwIP_Demo/lwIP_port/sys_arch.c
index e2e880521..bb3662e0d 100644
--- a/FreeRTOS/Demo/CORTEX_A9_Zynq_ZC702/RTOSDemo/src/lwIP_Demo/lwIP_port/sys_arch.c
+++ b/FreeRTOS/Demo/CORTEX_A9_Zynq_ZC702/RTOSDemo/src/lwIP_Demo/lwIP_port/sys_arch.c
@@ -422,7 +422,6 @@ BaseType_t xHigherPriorityTaskWoken = pdFALSE;
 	}
 	else
 	{
-#warning What happens if the mutex cannot be taken from an ISR in the code below
 		xGotSemaphore = xSemaphoreTakeFromISR( *pxMutex, &xHigherPriorityTaskWoken );
 		configASSERT( xGotSemaphore );
 		portYIELD_FROM_ISR( xHigherPriorityTaskWoken );
diff --git a/FreeRTOS/Demo/CORTEX_A9_Zynq_ZC702/RTOSDemo/src/lwIP_Demo/main_lwIP.c b/FreeRTOS/Demo/CORTEX_A9_Zynq_ZC702/RTOSDemo/src/lwIP_Demo/main_lwIP.c
index 7cd652da6..d749abda5 100644
--- a/FreeRTOS/Demo/CORTEX_A9_Zynq_ZC702/RTOSDemo/src/lwIP_Demo/main_lwIP.c
+++ b/FreeRTOS/Demo/CORTEX_A9_Zynq_ZC702/RTOSDemo/src/lwIP_Demo/main_lwIP.c
@@ -74,8 +74,23 @@
  * basic demo.  Generic functions, such FreeRTOS hook functions, and functions
  * required to configure the hardware are defined in main.c.
  ******************************************************************************
+ *
+ * The lwIP example can be configured to use either a static or dynamic IP
+ * address:
+ *    + To use a dynamically allocated IP address set LWIP_DHCP to 1 in
+ *      lwipopts.h and connect the target to a network that includes a DHCP
+ *      server.  The obtained IP address is printed to the UART console.
+ *    + To use a static IP address set LWIP_DHCP to 0 in lwipopts.h and set
+ *      the static IP address using the configIP_ADDR0 to configIP_ADDR3
+ *      constants at the bottom of FreeRTOSConfig.h.  Constants used to define
+ *      a netmask are also located at the bottom of FreeRTOSConfig.h.
+ *
+ * When connected correctly the demo uses the lwIP sockets API to create
+ * a FreeRTOS+CLI command console, and the lwIP raw API to create a create a
+ * basic HTTP web server with server side includes that generate dynamic run
+ * time web pages.  See http://www.freertos.org/RTOS-Xilinx-Zynq.html for more
+ * information.
  */
-#warning Need to update the comment above.
 
 /* Kernel includes. */
 #include "FreeRTOS.h"