/**
* This function should be called when a packet is ready to be read
* from the interface. It uses the function low_level_input() that
* should handle the actual reception of bytes from the network
* interface. Then the type of the received packet is determined and
* the appropriate input function is called.
*
* @param netif the lwip network interface structure for this ethernetif
*/
static void
ethernetif_input(struct netif *netif)
{
struct eth_hdr *ethhdr;
struct pbuf *p;
EMAC_IntCmd(EMAC_INT_RX_DONE, ENABLE);
for (;;)
{
sys_sem_wait(&sem_recv);
/* no packet could be read, silently ignore this */
while ((p = low_level_input(netif)) != NULL)
{
/* points to packet payload, which starts with an Ethernet header */
ethhdr = p->payload;
switch (htons(ethhdr->type)) {
/* IP or ARP packet? */
case ETHTYPE_IP:
case ETHTYPE_ARP:
#if PPPOE_SUPPORT
/* PPPoE packet? */
case ETHTYPE_PPPOEDISC:
case ETHTYPE_PPPOE:
#endif /* PPPOE_SUPPORT */
/* full packet send to tcpip_thread to process */
if (netif->input(p, netif)!=ERR_OK)
{ LWIP_DEBUGF(NETIF_DEBUG, ("ethernetif_input: IP input error\n"));
pbuf_free(p);
p = NULL;
}
break;
default:
pbuf_free(p);
p = NULL;
break;
}
}
EMAC_IntCmd(EMAC_INT_RX_DONE, ENABLE);
}
}
int _EMAC_IntCmd(uint8_t * args)
{
uint8_t * arg_ptr;
uint32_t ulIntType;
FunctionalState NewState;
if ((arg_ptr = (uint8_t *) strtok(NULL, " ")) == NULL) return 1;
ulIntType = (uint32_t) strtoul((char *) arg_ptr, NULL, 16);
if ((arg_ptr = (uint8_t *) strtok(NULL, " ")) == NULL) return 1;
NewState = (FunctionalState) strtoul((char *) arg_ptr, NULL, 16);
EMAC_IntCmd(ulIntType, NewState);
return 0;
}
/**
* User EMAC initialization
*/
void Usr_Init_Emac(void)
{
/* EMAC configuration type */
EMAC_CFG_Type Emac_Config;
/* pin configuration */
PINSEL_CFG_Type PinCfg;
uint32_t i;
/*
* Enable P1 Ethernet Pins:
* P1.0 - ENET_TXD0
* P1.1 - ENET_TXD1
* P1.4 - ENET_TX_EN
* P1.8 - ENET_CRS
* P1.9 - ENET_RXD0
* P1.10 - ENET_RXD1
* P1.14 - ENET_RX_ER
* P1.15 - ENET_REF_CLK
* P1.16 - ENET_MDC
* P1.17 - ENET_MDIO
*/
PinCfg.Funcnum = 1;
PinCfg.OpenDrain = 0;
PinCfg.Pinmode = 0;
PinCfg.Portnum = 1;
PinCfg.Pinnum = 0;
PINSEL_ConfigPin(&PinCfg);
PinCfg.Pinnum = 1;
PINSEL_ConfigPin(&PinCfg);
PinCfg.Pinnum = 4;
PINSEL_ConfigPin(&PinCfg);
PinCfg.Pinnum = 8;
PINSEL_ConfigPin(&PinCfg);
PinCfg.Pinnum = 9;
PINSEL_ConfigPin(&PinCfg);
PinCfg.Pinnum = 10;
PINSEL_ConfigPin(&PinCfg);
PinCfg.Pinnum = 14;
PINSEL_ConfigPin(&PinCfg);
PinCfg.Pinnum = 15;
PINSEL_ConfigPin(&PinCfg);
PinCfg.Pinnum = 16;
PINSEL_ConfigPin(&PinCfg);
PinCfg.Pinnum = 17;
PINSEL_ConfigPin(&PinCfg);
_DBG_("Init EMAC module");
sprintf(db_,"MAC[1..6] addr: %X-%X-%X-%X-%X-%X \n\r", \
EMACAddr[0], EMACAddr[1], EMACAddr[2], \
EMACAddr[3], EMACAddr[4], EMACAddr[5]);
DB;
Emac_Config.Mode = EMAC_MODE_AUTO;
Emac_Config.pbEMAC_Addr = EMACAddr;
// Initialize EMAC module with given parameter
while (EMAC_Init(&Emac_Config) == ERROR){
// Delay for a while then continue initializing EMAC module
_DBG_("Error during initializing EMAC, restart after a while");
for (i = 0x100000; i; i--);
}
_DBG_("Setup callback functions");
// Setup callback functions
EMAC_SetupIntCBS(EMAC_INT_RX_OVERRUN, RxOverrun_UsrCBS);
EMAC_SetupIntCBS(EMAC_INT_RX_ERR, RxError_UsrCBS);
EMAC_SetupIntCBS(EMAC_INT_RX_FIN, RxFinish_UsrCBS);
EMAC_SetupIntCBS(EMAC_INT_RX_DONE, RxDone_UsrCBS);
EMAC_SetupIntCBS(EMAC_INT_TX_UNDERRUN, TxUnderrun_UsrCBS);
EMAC_SetupIntCBS(EMAC_INT_TX_ERR, TxError_UsrCBS);
EMAC_SetupIntCBS(EMAC_INT_TX_FIN, TxFinish_UsrCBS);
EMAC_SetupIntCBS(EMAC_INT_TX_DONE, TxDone_UsrCBS);
#if ENABLE_WOL
EMAC_SetupIntCBS(EMAC_INT_WAKEUP, WoL_UsrCBS);
#endif
// Enable all interrupt
EMAC_IntCmd((EMAC_INT_RX_OVERRUN | EMAC_INT_RX_ERR | EMAC_INT_RX_FIN \
| EMAC_INT_RX_DONE | EMAC_INT_TX_UNDERRUN | EMAC_INT_TX_ERR \
| EMAC_INT_TX_FIN | EMAC_INT_TX_DONE), ENABLE);
NVIC_SetPriority(ENET_IRQn, 0);
NVIC_EnableIRQ(ENET_IRQn);
_DBG_("Initialize EMAC complete");
}
void ethernetif_frame_ready()
{
EMAC_IntCmd(EMAC_INT_RX_DONE, DISABLE);
if (sys_sem_valid(&sem_recv))
sys_sem_signal(&sem_recv);
}