Display DHCP client name
When MRF24W is a client in the infrastructure network, MRF24W client name appears as empty field in the AP/router's DHCP client table . See figure below.
To have MRF24W display a DHCP client name, incorporate the following changes into DHCP.c
Add new code below.
#define DHCP_HOSTNAME_SIZE 18
char Dhcp_HostName[DHCP_HOSTNAME_SIZE + 1];
/*****************************************************************************
Function:
static void DHCPSetHostName(char *HostName)
Description:
Set the Host Name.
Precondition:
None.
Parameters:
HostName = Pointer to zero terminated host name
Returns:
None
***************************************************************************/
void DHCPSetHostName(char *HostName)
{
strncpy(Dhcp_HostName, HostName, DHCP_HOSTNAME_SIZE);
Dhcp_HostName[DHCP_HOSTNAME_SIZE] = 0;
}
Modify existing DHCPSend() as below.
static void _DHCPSend(BYTE messageType, BOOL bRenewing)
{
...................................................
// Load our interested parameters
// This is hardcoded list. If any new parameters are desired,
// new lines must be added here.
UDPPut(DHCP_PARAM_REQUEST_LIST);
UDPPut(DHCP_PARAM_REQUEST_LIST_LEN - 1);
UDPPut(DHCP_SUBNET_MASK);
UDPPut(DHCP_ROUTER);
UDPPut(DHCP_DNS);
// Add requested IP address to DHCP Request Message
if( ((messageType == DHCP_REQUEST_MESSAGE) && !bRenewing) ||
((messageType == DHCP_DISCOVER_MESSAGE) && DHCPClient.tempIPAddress.Val))
{
UDPPut(DHCP_PARAM_REQUEST_IP_ADDRESS);
UDPPut(DHCP_PARAM_REQUEST_IP_ADDRESS_LEN);
UDPPutArray((BYTE*)&DHCPClient.tempIPAddress, DHCP_PARAM_REQUEST_IP_ADDRESS_LEN);
}
// Add any new parameter request here.
UDPPut(DHCP_HOST_NAME);
sprintf((char *)Dhcp_HostName,"%s_%02x%02x", MY_DEFAULT_HOST_NAME, AppConfig.MyMACAddr.v[4], AppConfig.MyMACAddr.v[5]);
UDPPut(strlen(Dhcp_HostName));
UDPPutArray((BYTE*)Dhcp_HostName, strlen(Dhcp_HostName));
........................
}
With these modifications, MRF24W has a valid client name now. See figure below.
