I'm trying to detect the status of the network cable (plugged, un-plugged) on a TWR-SER2 board connected with TWR-K60F120M using MQX 4.2.
I am using the RTCS function - "ipcfg_get_link_active()" but it seems to always return a 'TRUE' once the Ethernet system is configured. Prior to configuring the Ethernet it reports a 'FALSE'.
Once the Ethernet system is configured and operational, plugging or un-plugging the Ethernet cable from the TWR-SER2 module seems to make no difference, the function always returns a 'TRUE'.
Code Snippet:
#define BSP_DEFAULT_ENET_DEVICE 0
error = RTCS_create();
if(error == RTCS_OK)
{
/* Initialise Ethernet */
error = ipcfg_init_device(BSP_DEFAULT_ENET_DEVICE, mac_address);
if (error != IPCFG_OK)
{
printf("Fatal Error 0x%X: Network device initialisation failed.\n", error);
_task_block();
}
while(retVal == FALSE)
{
retVal = ipcfg_get_link_active(BSP_DEFAULT_ENET_DEVICE);
if(retVal == TRUE)
printf("\nCable Connected..!!");
else
printf("\nCable not connected..!!");
_time_delay(100);
}
-- It comes out of while loop at once.
Also, i tried to read the data value in phy_dp83xxx_get_link_status() function; it always returns 0x7FFF, no matter whether the cable is connected or not connected.
static bool phy_dp83xxx_get_link_status
(
ENET_CONTEXT_STRUCT_PTR enet_ptr
)
{
uint32_t data;
bool res = FALSE;
/* Some PHY (e.g.DP8340) returns "unconnected" and than "connected" state
* just to show that was transition event from one state to another.
* As we need only curent state, read 2 times and return
* the current/latest state. */
if ((*enet_ptr->PARAM_PTR->ENET_IF->MAC_IF->PHY_READ)(enet_ptr, DP83XXX_REG_BMSR, &data, MII_TIMEOUT)) {
if ((*enet_ptr->PARAM_PTR->ENET_IF->MAC_IF->PHY_READ)(enet_ptr, DP83XXX_REG_BMSR, &data, MII_TIMEOUT))
{
printf("\nData: %lx", data);
res = ((data & DP83XXX_REG_BMSR_LINK_STATUS) != 0) ? TRUE : FALSE;
}
}
return res;
}
