sam/drivers/can/example/example.c File Reference

CAN example for SAM.

Copyright (c) 2014-2018 Microchip Technology Inc. and its subsidiaries.

#include "asf.h"

Macros
#define	CAN_COMM_RXMB_ID   0
#define	CAN_COMM_TXMB_ID   1
#define	CAN_MSG_DUMMY_DATA   0x55AAAA55u
#define	CAN_TRANSFER_ID   7
#define	CAN_TX_PRIO   15
#define	MAX_CAN_FRAME_DATA_LEN   8
	CAN frame max data length. More...
#define	STRING_EOL   "\r"
#define	STRING_HEADER

Functions
void	CAN1_Handler (void)
	Default interrupt handler for CAN 1. More...
static void	configure_console (void)
	Configure UART for debug message output. More...
static void	decode_can_msg (can_mb_conf_t *p_mailbox)
	Decode CAN messages. More...
int	main (void)
	can_example application entry point. More...
static void	reset_mailbox_conf (can_mb_conf_t *p_mailbox)
	Reset mailbox configure structure. More...

Variables
volatile uint32_t	g_ul_recv_status = 0
	Receive status. More...
can_mb_conf_t	rx_mailbox
can_mb_conf_t	tx_mailbox
	Transfer mailbox structure. More...

#define CAN_COMM_RXMB_ID   0

Referenced by main().

#define CAN_COMM_TXMB_ID   1

Referenced by main().

#define CAN_MSG_DUMMY_DATA   0x55AAAA55u

Referenced by decode_can_msg(), and main().

#define CAN_TRANSFER_ID   7

Referenced by main().

#define CAN_TX_PRIO   15

Referenced by main().

#define MAX_CAN_FRAME_DATA_LEN   8

CAN frame max data length.

Referenced by main().

#define STRING_EOL   "\r"

Referenced by main().

#define STRING_HEADER

Value:

"-- CAN Example --\r\n" \
        "-- "BOARD_NAME" --\r\n" \
        "-- Compiled: "__DATE__" "__TIME__" --"STRING_EOL

Referenced by main().

void CAN1_Handler

(

void

)

Default interrupt handler for CAN 1.

References can_mailbox_get_status(), can_mailbox_read(), g_ul_recv_status, and can_mb_conf_t::ul_status.

static void configure_console ( void  )

static

Configure UART for debug message output.

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

Referenced by main().

static void decode_can_msg ( can_mb_conf_t *  p_mailbox )

static

Decode CAN messages.

Parameters

p_mailbox

Pointer to CAN Mailbox structure.

References CAN_MSG_DUMMY_DATA, can_mb_conf_t::ul_datah, and can_mb_conf_t::ul_datal.

Referenced by main().

int main

(

void

)

can_example application entry point.

Returns

Unused (ANSI-C compatibility).

References board_init(), CAN_BPS_1000K, CAN_COMM_RXMB_ID, CAN_COMM_TXMB_ID, CAN_DISABLE_ALL_INTERRUPT_MASK, can_disable_interrupt(), can_enable_interrupt(), can_get_status(), can_global_send_transfer_cmd(), can_init(), can_mailbox_init(), can_mailbox_write(), CAN_MB_RX_MODE, CAN_MB_TX_MODE, CAN_MSG_DUMMY_DATA, can_reset_all_mailbox(), CAN_TRANSFER_ID, CAN_TX_PRIO, cnt, configure_console(), decode_can_msg(), g_ul_recv_status, MAX_CAN_FRAME_DATA_LEN, pmc_enable_periph_clk(), reset_mailbox_conf(), STRING_EOL, STRING_HEADER, sysclk_get_cpu_hz(), sysclk_init(), can_mb_conf_t::uc_id_ver, can_mb_conf_t::uc_length, can_mb_conf_t::uc_obj_type, can_mb_conf_t::uc_tx_prio, can_mb_conf_t::ul_datah, can_mb_conf_t::ul_datal, can_mb_conf_t::ul_id, can_mb_conf_t::ul_id_msk, and can_mb_conf_t::ul_mb_idx.

static void reset_mailbox_conf ( can_mb_conf_t *  p_mailbox )

static

Reset mailbox configure structure.

Parameters

p_mailbox

Pointer to mailbox configure structure.

References can_mb_conf_t::uc_id_ver, can_mb_conf_t::uc_length, can_mb_conf_t::uc_obj_type, can_mb_conf_t::uc_tx_prio, can_mb_conf_t::ul_datah, can_mb_conf_t::ul_datal, can_mb_conf_t::ul_fid, can_mb_conf_t::ul_id, can_mb_conf_t::ul_id_msk, can_mb_conf_t::ul_mb_idx, and can_mb_conf_t::ul_status.

Referenced by main().

volatile uint32_t g_ul_recv_status = 0

Receive status.

can_mb_conf_t rx_mailbox

can_mb_conf_t tx_mailbox

Transfer mailbox structure.