6.4.1 How to Set IP Addresses in the Sample Programs

With the introduction of Dynamic C 7.30 we have taken steps to make it easier to run many of our sample programs. You will see a TCPCONFIG macro. This macro tells Dynamic C to select your configuration from a list of default configurations. You will have three choices when you encounter a sample program with the TCPCONFIG macro.

1.You can replace the TCPCONFIG macro with individual MY_IP_ADDRESS, MY_NET- MASK, MY_GATEWAY, and MY_NAMESERVER macros in each program.

2.You can leave TCPCONFIG at the usual default of 1, which will set the IP configurations to 10.10.6.100, the netmask to 255.255.255.0, and the nameserver and gateway to 10.10.6.1. If you would like to change the default values, for example, to use an IP address of 10.1.1.2 for the RCM4000 module, and 10.1.1.1 for your PC, you can edit the values in the section that directly follows the “General Configuration” com- ment in the TCP_CONFIG.LIB library. You will find this library in the LIB\TCPIP directory.

3.You can create a CUSTOM_CONFIG.LIB library and use a TCPCONFIG value greater than 100. Instructions for doing this are at the beginning of the TCP_CONFIG.LIB library in the LIB\TCPIP directory.

There are some other “standard” configurations for TCPCONFIG that let you select differ- ent features such as DHCP. Their values are documented at the top of the TCP_CON- FIG.LIB library in the LIB\TCPIP directory. More information is available in the Dynamic C TCP/IP User’s Manual.

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Digi RCM4000 user manual How to Set IP Addresses in the Sample Programs