XgNutArchCm3Lpc17xxEmac

Functions
EMAC_BUFF_STATUS	Lpc17xxEmacGetBufferStatus (EMAC_BUFF_IDX idx)
	Query buffer status.
void	Lpc17xxEmacRxThread (void *arg)
int	Lpc17xxEmacOutput (NUTDEVICE *dev, NETBUF *nb)
	Send Ethernet packet.
int	Lpc17xxEmacInit (NUTDEVICE *dev)
	Initialize Ethernet hardware.
Variables
NUTDEVICE	devLpc17xxEmac
	Device information structure.

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Function Documentation

EMAC_BUFF_STATUS Lpc17xxEmacGetBufferStatus

(

EMAC_BUFF_IDX

idx

)

[inline]

Query buffer status.

Parameters:

idx	buffer index (EMAC_RX_BUFF, EMAC_TX_BUFF)

Returns:

buffer status (EMAC_BUFF_EMPTY, EMAC_BUFF_PARTIAL_FULL, EMAC_BUFF_FULL)

References EMAC_BUFF_EMPTY, EMAC_BUFF_FULL, EMAC_BUFF_PARTIAL_FULL, EMAC_TX_BUFF, and LPC_EMAC.

Referenced by Lpc17xxEmacOutput().

void Lpc17xxEmacRxThread

(

void *

arg

)

References _NUTDEVICE::dev_dcb, _NUTDEVICE::dev_icb, EMAC_INT_RX_DONE, EMAC_INT_RX_ERR, EMAC_INT_RX_FIN, EMAC_INT_RX_OVERRUN, EMAC_INT_TX_DONE, EMAC_INT_TX_ERR, EMAC_INT_TX_FIN, EMAC_INT_TX_UNDERRUN, EMAC_LINK_LOOPS, EMPRINTF, ETHER_IS_UNICAST, ifnet::if_mac, ifnet::if_recv, LPC_EMAC, _NETBUF::nb_dl, _EMACINFO::ni_insane, _EMACINFO::ni_mutex, _EMACINFO::ni_rx_rdy, NutEventPost(), NutEventWait(), NutIrqEnable(), NutNetBufFree(), NutSleep(), NutThreadSetPriority(), sig_EMAC, and _NBDATA::sz.

Referenced by Lpc17xxEmacInit().

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int Lpc17xxEmacOutput	(	NUTDEVICE *	dev,
		NETBUF *	nb
	)

Send Ethernet packet.

Parameters:

dev	Identifies the device to use.
nb	Network buffer structure containing the packet to be sent. The structure must have been allocated by a previous call NutNetBufAlloc().

Returns:

0 on success, -1 in case of any errors.

References _NUTDEVICE::dev_dcb, EMAC_BUFF_FULL, EMAC_TX_BUFF, Lpc17xxEmacGetBufferStatus(), _EMACINFO::ni_insane, _EMACINFO::ni_mutex, _EMACINFO::ni_tx_rdy, NutEventPost(), NutEventWait(), and rc.

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int Lpc17xxEmacInit

(

NUTDEVICE *

dev

)

Initialize Ethernet hardware.

Applications should do not directly call this function. It is automatically executed during during device registration by NutRegisterDevice().

Parameters:

dev	Identifies the device to initialize.

References CLKPWR_PCONP_PCENET, _NUTDEVICE::dev_dcb, EMAC_LINK_LOOPS, EMPRINTF, GPIO_CFG_PERIPHERAL1, GpioPinConfigSet(), Lpc17xxEmacRxThread(), memset(), NULL, NUT_THREAD_NICRXSTACK, NUT_THREAD_STACK_ADD, NUT_THREAD_STACK_MULT, NUTGPIO_PORT1, NutRegisterIrqHandler(), NutThreadCreate(), sig_EMAC, and SysCtlPeripheralClkEnable.

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Variable Documentation

NUTDEVICE devLpc17xxEmac

Initial value:

 {
    0,                          
    {'e', 't', 'h', '0', 0, 0, 0, 0, 0},        
    IFTYP_NET,                  
    0,                          
    0,                          
    &ifn_eth0,                  
    &dcb_eth0,                  
    Lpc17xxEmacInit,            
    0,                          
    0,                          
    0,                          

    0,                          

    0,                          
    0,                          
    0                           
}

Device information structure.

A pointer to this structure must be passed to NutRegisterDevice() to bind this Ethernet device driver to the Nut/OS kernel. An application may then call NutNetIfConfig() with the name eth0 of this driver to initialize the network interface.