EMAC example for SAM.

#include <asf.h>
#include <string.h>
#include "mini_ip.h"
#include "conf_eth.h"

Macros
#define	STRING_EOL "\r"

#define	STRING_HEADER

Functions
static void	configure_console (void)
	Configure UART console. More...

static void	emac_display_ip_packet (p_ip_header_t p_ip_header, uint32_t ul_size)
	Display the IP packet. More...

void	EMAC_Handler (void)
	EMAC interrupt handler. More...

static uint16_t	emac_icmp_checksum (uint16_t *p_buff, uint32_t ul_len)
	Process & return the ICMP checksum. More...

static void	emac_process_arp_packet (uint8_t *p_uc_data, uint32_t ul_size)
	Process the received ARP packet; change address and send it back. More...

static void	emac_process_eth_packet (uint8_t *p_uc_data, uint32_t ul_size)
	Process the received EMAC packet. More...

static void	emac_process_ip_packet (uint8_t *p_uc_data, uint32_t ul_size)
	Process the received IP packet; change address and send it back. More...

int	main (void)
	EMAC example entry point. More...

Variables
static emac_device_t	gs_emac_dev
	The EMAC driver instance. More...

static volatile uint8_t	gs_uc_eth_buffer [EMAC_FRAME_LENTGH_MAX]
	Buffer for ethernet packets. More...

static uint8_t	gs_uc_ip_address []
	The IP address used for test (ping ...) More...

static uint8_t	gs_uc_mac_address []
	The MAC address used for the test. More...

#define STRING_EOL "\r"

#define STRING_HEADER

Value:

"-- EMAC Example --\r" \
        "-- "BOARD_NAME" --\r" \
        "-- Compiled: "__DATE__" "__TIME__" --"STRING_EOL

Referenced by main().

static void configure_console ( void )

static

Configure UART console.

References uart_rs232_options::baudrate, stdio_serial_init(), and sysclk_enable_peripheral_clock().

Referenced by main().

static void emac_display_ip_packet	(	p_ip_header_t	p_ip_header,
		uint32_t	ul_size
	)

static

Display the IP packet.

Parameters

p_ip_header	Pointer to the IP header.
ul_size	The data size.

References _IPheader::ip_dst, _IPheader::ip_hl_v, _IPheader::ip_id, _IPheader::ip_len, _IPheader::ip_p, IP_PROT_ICMP, IP_PROT_IP, IP_PROT_TCP, IP_PROT_UDP, _IPheader::ip_src, _IPheader::ip_sum, and _IPheader::ip_tos.

Referenced by emac_process_eth_packet().

void EMAC_Handler ( void )

EMAC interrupt handler.

References emac_handler().

static uint16_t emac_icmp_checksum	(	uint16_t *	p_buff,
		uint32_t	ul_len
	)

static

Process & return the ICMP checksum.

Parameters

p_buff	Pointer to the buffer.
ul_len	The length of the buffered data.

Returns: Checksum of the ICMP.

References SWAP16.

Referenced by emac_process_ip_packet().

static void emac_process_arp_packet	(	uint8_t *	p_uc_data,
		uint32_t	ul_size
	)

static

Process the received ARP packet; change address and send it back.

Parameters

p_uc_data	The data to process.
ul_size	The data size.

References arp_header::ar_op, arp_header::ar_sha, arp_header::ar_spa, arp_header::ar_tha, arp_header::ar_tpa, ARP_REPLY, ARP_REQUEST, emac_dev_write(), EMAC_OK, ethernet_header::et_dest, ethernet_header::et_src, ETH_HEADER_SIZE, NULL, and SWAP16.

Referenced by emac_process_eth_packet().

static void emac_process_eth_packet	(	uint8_t *	p_uc_data,
		uint32_t	ul_size
	)

static

Process the received EMAC packet.

Parameters

p_uc_data	The data to process.
ul_size	The data size.

References emac_display_ip_packet(), emac_process_arp_packet(), emac_process_ip_packet(), ethernet_header::et_protlen, ETH_HEADER_SIZE, ETH_PROT_ARP, ETH_PROT_IP, and SWAP16.

Referenced by main().

static void emac_process_ip_packet	(	uint8_t *	p_uc_data,
		uint32_t	ul_size
	)

static

Process the received IP packet; change address and send it back.

Parameters

p_uc_data	The data to process.
ul_size	The data size.

References icmp_echo_header::cksum, icmp_echo_header::code, emac_dev_write(), emac_icmp_checksum(), EMAC_OK, ethernet_header::et_dest, ethernet_header::et_src, ETH_HEADER_SIZE, ETH_IP_HEADER_SIZE, ICMP_ECHO_REPLY, ICMP_ECHO_REQUEST, _IPheader::ip_dst, _IPheader::ip_len, _IPheader::ip_p, IP_PROT_ICMP, _IPheader::ip_src, NULL, SWAP16, icmp_echo_header::type, and UNUSED.

Referenced by emac_process_eth_packet().

int main ( void )

EMAC example entry point.

Returns: Unused (ANSI-C compatibility).

References board_init(), configure_console(), emac_dev_init(), emac_dev_read(), EMAC_OK, emac_process_eth_packet(), ethernet_phy_auto_negotiate(), ethernet_phy_init(), ethernet_phy_set_link(), emac_device::p_hw, pmc_enable_periph_clk(), rstc_get_status(), rstc_reset_extern(), rstc_set_external_reset(), STRING_HEADER, sysclk_get_cpu_hz(), sysclk_init(), emac_options::uc_copy_all_frame, emac_options::uc_mac_addr, and emac_options::uc_no_boardcast.

emac_device_t gs_emac_dev

static

The EMAC driver instance.

volatile uint8_t gs_uc_eth_buffer[EMAC_FRAME_LENTGH_MAX]

static

Buffer for ethernet packets.

uint8_t gs_uc_ip_address[]

static

Initial value:

=
        { ETHERNET_CONF_IPADDR0, ETHERNET_CONF_IPADDR1,
            ETHERNET_CONF_IPADDR2, ETHERNET_CONF_IPADDR3 }

The IP address used for test (ping ...)

uint8_t gs_uc_mac_address[]

static

Initial value:

=
        { ETHERNET_CONF_ETHADDR0, ETHERNET_CONF_ETHADDR1, ETHERNET_CONF_ETHADDR2,
            ETHERNET_CONF_ETHADDR3, ETHERNET_CONF_ETHADDR4, ETHERNET_CONF_ETHADDR5
}

The MAC address used for the test.

Microchip® Advanced Software Framework

Macros

Functions

Variables