Overview
========
The lwip_dhcp demo application demonstrates a DHCP demo on the lwIP TCP/IP stack.
The application acts as a DHCP client and prints the status as it is progressing.
Once the interface is being bound to an IP address obtained from DHCP server, address information is printed.
Toolchain supported
===================
- IAR embedded Workbench 9.30.1
- Keil MDK 5.37
- GCC ARM Embedded 10.3.1
- MCUXpresso 11.6.0
Hardware requirements
=====================
- Mini/micro USB cable
- EVK-MIMXRT1020 board
- Personal Computer
Board settings
==============
No special settings are required.
Note:
To debug in qspiflash, following steps are needed:
1. Select the flash target and compile.
2. Set the SW8: 1 off 2 off 3 on 4 off, then power on the board and connect USB cable to J23.
3. Start debugging in IDE.
- Keil: Click "Download (F8)" to program the image to qspiflash first then clicking "Start/Stop Debug Session (Ctrl+F5)" to start debugging.
Prepare the Demo
================
1. Connect a USB cable between the PC host and the OpenSDA(or USB to Serial) USB port on the target board.
2. Open a serial terminal on PC for OpenSDA serial(or USB to Serial) device with these settings:
- 115200 baud rate
- 8 data bits
- No parity
- One stop bit
- No flow control
3. Insert the Ethernet Cable into the target board's RJ45 port and connect it to a router (or other DHCP server capable device).
4. Download the program to the target board.
5. Either press the reset button on your board or launch the debugger in your IDE to begin running the demo.
Running the demo
================
When the demo runs, the log would be seen on the terminal like:
Initializing PHY...
************************************************
DHCP example
************************************************
DHCP state : SELECTING
DHCP state : REQUESTING
DHCP state : CHECKING
DHCP state : BOUND
IPv4 Address : 192.168.0.4
IPv4 Subnet mask : 255.255.255.0
IPv4 Gateway : 192.168.0.1
