void vuIP_Task( void *pvParameters )
{
portBASE_TYPE i;
uip_ipaddr_t xIPAddr;
struct timer periodic_timer, arp_timer;
/* Create the semaphore used by the ISR to wake this task. */
vSemaphoreCreateBinary( xSemaphore );
/* Initialise the uIP stack. */
timer_set( &periodic_timer, configTICK_RATE_HZ / 2 );
timer_set( &arp_timer, configTICK_RATE_HZ * 10 );
uip_init();
uip_ipaddr( xIPAddr, uipIP_ADDR0, uipIP_ADDR1, uipIP_ADDR2, uipIP_ADDR3 );
uip_sethostaddr( xIPAddr );
uip_ipaddr( xIPAddr, uipNET_MASK0, uipNET_MASK1, uipNET_MASK2, uipNET_MASK3 );
uip_setnetmask( xIPAddr );
uip_ipaddr( xIPAddr, uipGATEWAY_ADDR0, uipGATEWAY_ADDR1, uipGATEWAY_ADDR2, uipGATEWAY_ADDR3 );
uip_setdraddr( xIPAddr );
httpd_init();
/* Initialise the MAC. */
ENET_InitClocksGPIO();
ENET_Init();
portENTER_CRITICAL();
{
ENET_Start();
prvSetMACAddress();
VIC_Config( ENET_ITLine, VIC_IRQ, 1 );
VIC_ITCmd( ENET_ITLine, ENABLE );
ENET_DMA->ISR = uipDMI_RX_CURRENT_DONE;
ENET_DMA->IER = uipDMI_RX_CURRENT_DONE;
}
portEXIT_CRITICAL();
while(1)
{
/* Is there received data ready to be processed? */
uip_len = ENET_HandleRxPkt( uip_buf );
if( uip_len > 0 )
{
/* Standard uIP loop taken from the uIP manual. */
if( xHeader->type == htons( UIP_ETHTYPE_IP ) )
{
uip_arp_ipin();
uip_input();
/* If the above function invocation resulted in data that
should be sent out on the network, the global variable
uip_len is set to a value > 0. */
if( uip_len > 0 )
{
uip_arp_out();
prvENET_Send();
}
}
else if( xHeader->type == htons( UIP_ETHTYPE_ARP ) )
{
uip_arp_arpin();
/* If the above function invocation resulted in data that
should be sent out on the network, the global variable
uip_len is set to a value > 0. */
if( uip_len > 0 )
{
prvENET_Send();
}
}
}
else
{
if( timer_expired( &periodic_timer ) )
{
timer_reset( &periodic_timer );
for( i = 0; i < UIP_CONNS; i++ )
{
uip_periodic( i );
/* If the above function invocation resulted in data that
should be sent out on the network, the global variable
uip_len is set to a value > 0. */
if( uip_len > 0 )
{
uip_arp_out();
prvENET_Send();
}
}
/* Call the ARP timer function every 10 seconds. */
if( timer_expired( &arp_timer ) )
{
timer_reset( &arp_timer );
uip_arp_timer();
}
}
else
{
/* We did not receive a packet, and there was no periodic
processing to perform. Block for a fixed period. If a packet
is received during this period we will be woken by the ISR
giving us the Semaphore. */
xSemaphoreTake( xSemaphore, configTICK_RATE_HZ / 2 );
}
}
}
}
/** \brief Low level init of the MAC and PHY.
*
* \param[in] netif Pointer to LWIP netif structure
*/
static err_t low_level_init(struct netif *netif)
{
struct k64f_enetdata *k64f_enet = netif->state;
uint8_t i;
uint32_t sysClock;
phy_speed_t phy_speed;
phy_duplex_t phy_duplex;
uint32_t phyAddr = 0;
bool link = false;
enet_config_t config;
// Allocate RX descriptors
rx_desc_start_addr = (uint8_t *)calloc(1, sizeof(enet_rx_bd_struct_t) * ENET_RX_RING_LEN + ENET_BUFF_ALIGNMENT);
if(!rx_desc_start_addr)
return ERR_MEM;
// Allocate TX descriptors
tx_desc_start_addr = (uint8_t *)calloc(1, sizeof(enet_tx_bd_struct_t) * ENET_TX_RING_LEN + ENET_BUFF_ALIGNMENT);
if(!tx_desc_start_addr)
return ERR_MEM;
rx_desc_start_addr = (uint8_t *)ENET_ALIGN(rx_desc_start_addr, ENET_BUFF_ALIGNMENT);
tx_desc_start_addr = (uint8_t *)ENET_ALIGN(tx_desc_start_addr, ENET_BUFF_ALIGNMENT);
/* Create buffers for each receive BD */
for (i = 0; i < ENET_RX_RING_LEN; i++) {
rx_buff[i] = pbuf_alloc(PBUF_RAW, ENET_ETH_MAX_FLEN + ENET_BUFF_ALIGNMENT, PBUF_RAM);
if (NULL == rx_buff[i])
return ERR_MEM;
/* K64F note: the next line ensures that the RX buffer is properly aligned for the K64F
RX descriptors (16 bytes alignment). However, by doing so, we're effectively changing
a data structure which is internal to lwIP. This might not prove to be a good idea
in the long run, but a better fix would probably involve modifying lwIP itself */
rx_buff[i]->payload = (void*)ENET_ALIGN((uint32_t)rx_buff[i]->payload, ENET_BUFF_ALIGNMENT);
rx_ptr[i] = rx_buff[i]->payload;
}
k64f_enet->tx_consume_index = k64f_enet->tx_produce_index = 0;
/* prepare the buffer configuration. */
enet_buffer_config_t buffCfg = {
ENET_RX_RING_LEN,
ENET_TX_RING_LEN,
ENET_ALIGN(ENET_ETH_MAX_FLEN, ENET_BUFF_ALIGNMENT),
0,
(volatile enet_rx_bd_struct_t *)rx_desc_start_addr,
(volatile enet_tx_bd_struct_t *)tx_desc_start_addr,
(uint8_t *)&rx_ptr,
NULL,
};
#if (defined(TARGET_K64F) && (defined(TARGET_FRDM)))
k64f_init_eth_hardware();
#endif
#if (defined(TARGET_K66F) && (defined(TARGET_FRDM)))
k66f_init_eth_hardware();
#endif
sysClock = CLOCK_GetFreq(kCLOCK_CoreSysClk);
ENET_GetDefaultConfig(&config);
PHY_Init(ENET, 0, sysClock);
PHY_GetLinkStatus(ENET, phyAddr, &link);
if (link)
{
/* Get link information from PHY */
PHY_GetLinkSpeedDuplex(ENET, phyAddr, &phy_speed, &phy_duplex);
/* Change the MII speed and duplex for actual link status. */
config.miiSpeed = (enet_mii_speed_t)phy_speed;
config.miiDuplex = (enet_mii_duplex_t)phy_duplex;
config.interrupt = kENET_RxFrameInterrupt | kENET_TxFrameInterrupt;
}
config.rxMaxFrameLen = ENET_ETH_MAX_FLEN;
config.macSpecialConfig = kENET_ControlFlowControlEnable;
config.txAccelerConfig = kENET_TxAccelIsShift16Enabled;
config.rxAccelerConfig = kENET_RxAccelisShift16Enabled | kENET_RxAccelMacCheckEnabled;
ENET_Init(ENET, &g_handle, &config, &buffCfg, netif->hwaddr, sysClock);
ENET_SetCallback(&g_handle, ethernet_callback, netif);
ENET_ActiveRead(ENET);
return ERR_OK;
}
