qs_mcan_basic.c File Reference

SAM MCAN basic Quick Start.

Copyright (c) 2015-2018 Microchip Technology Inc. and its subsidiaries.

#include <asf.h>
#include <string.h>
#include <conf_mcan.h>

Macros
#define	MCAN_RX_EXTENDED_FILTER_ID_0   0x100000A5
#define	MCAN_RX_EXTENDED_FILTER_ID_0_BUFFER_INDEX   1
#define	MCAN_RX_EXTENDED_FILTER_ID_1   0x10000096
#define	MCAN_RX_EXTENDED_FILTER_INDEX_0   0
#define	MCAN_RX_EXTENDED_FILTER_INDEX_1   1
#define	MCAN_RX_STANDARD_FILTER_ID_0   0x45A
#define	MCAN_RX_STANDARD_FILTER_ID_0_BUFFER_INDEX   2
#define	MCAN_RX_STANDARD_FILTER_ID_1   0x469
#define	MCAN_RX_STANDARD_FILTER_INDEX_0   0
#define	MCAN_RX_STANDARD_FILTER_INDEX_1   1
#define	MCAN_TX_BUFFER_INDEX   0

Functions
static void	configure_console (void)
	Configure UART console. More...
static void	configure_mcan (void)
	MCAN module initialization. More...
static void	display_menu (void)
	display configuration menu. More...
int	main (void)
void	MCAN1_INT0_Handler (void)
	Interrupt handler for MCAN, inlcuding RX,TX,ERROR and so on processes. More...
static void	mcan_send_extended_message (uint32_t id_value, uint8_t *data, uint32_t data_length)
	send extended MCAN message, More...
static void	mcan_send_standard_message (uint32_t id_value, uint8_t *data, uint32_t data_length)
	send standard MCAN message, More...
static void	mcan_set_extended_filter_0 (void)
	set receive extended MCAN ID, dedicated buffer More...
static void	mcan_set_extended_filter_1 (void)
	set receive extended MCAN ID,FIFO buffer. More...
static void	mcan_set_standard_filter_0 (void)
	set receive standard MCAN ID, dedicated buffer More...
static void	mcan_set_standard_filter_1 (void)
	set receive standard MCAN ID,FIFO buffer. More...

Variables
static volatile uint32_t	extended_receive_index = 0
static struct mcan_module	mcan_instance
static struct mcan_rx_element_buffer	rx_element_buffer
static struct mcan_rx_element_fifo_0	rx_element_fifo_0
static struct mcan_rx_element_fifo_1	rx_element_fifo_1
static volatile uint32_t	standard_receive_index = 0
static uint8_t	tx_message_0 [CONF_MCAN_ELEMENT_DATA_SIZE]
static uint8_t	tx_message_1 [CONF_MCAN_ELEMENT_DATA_SIZE]

#define MCAN_RX_EXTENDED_FILTER_ID_0   0x100000A5

Referenced by main(), and mcan_set_extended_filter_0().

#define MCAN_RX_EXTENDED_FILTER_ID_0_BUFFER_INDEX   1

Referenced by mcan_set_extended_filter_0().

#define MCAN_RX_EXTENDED_FILTER_ID_1   0x10000096

Referenced by main(), and mcan_set_extended_filter_1().

#define MCAN_RX_EXTENDED_FILTER_INDEX_0   0

Referenced by mcan_set_extended_filter_0().

#define MCAN_RX_EXTENDED_FILTER_INDEX_1   1

Referenced by mcan_set_extended_filter_1().

#define MCAN_RX_STANDARD_FILTER_ID_0   0x45A

Referenced by main(), and mcan_set_standard_filter_0().

#define MCAN_RX_STANDARD_FILTER_ID_0_BUFFER_INDEX   2

Referenced by mcan_set_standard_filter_0().

#define MCAN_RX_STANDARD_FILTER_ID_1   0x469

Referenced by main(), and mcan_set_standard_filter_1().

#define MCAN_RX_STANDARD_FILTER_INDEX_0   0

Referenced by mcan_set_standard_filter_0().

#define MCAN_RX_STANDARD_FILTER_INDEX_1   1

Referenced by mcan_set_standard_filter_1().

#define MCAN_TX_BUFFER_INDEX   0

Referenced by mcan_send_extended_message(), and mcan_send_standard_message().

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 configure_mcan ( void  )

static

MCAN module initialization.

References irq_register_handler, MCAN_ACKNOWLEDGE_ERROR, MCAN_BUS_OFF, mcan_enable_interrupt(), MCAN_FORMAT_ERROR, mcan_get_config_defaults(), mcan_init(), mcan_instance, mcan_start(), tx_message_0, and tx_message_1.

Referenced by main(), and MCAN1_INT0_Handler().

static void display_menu ( void  )

static

display configuration menu.

Referenced by main().

int main

(

void

)

References board_init(), configure_console(), configure_mcan(), display_menu(), MCAN_RX_EXTENDED_FILTER_ID_0, MCAN_RX_EXTENDED_FILTER_ID_1, MCAN_RX_STANDARD_FILTER_ID_0, MCAN_RX_STANDARD_FILTER_ID_1, mcan_send_extended_message(), mcan_send_standard_message(), mcan_set_extended_filter_0(), mcan_set_extended_filter_1(), mcan_set_standard_filter_0(), mcan_set_standard_filter_1(), sysclk_init(), tx_message_0, and tx_message_1.

void MCAN1_INT0_Handler

(

void

)

Interrupt handler for MCAN, inlcuding RX,TX,ERROR and so on processes.

References MCAN_RX_ELEMENT_R0_Type::bit, MCAN_RX_ELEMENT_R1_Type::bit, configure_mcan(), mcan_rx_element_buffer::data, mcan_rx_element_fifo_0::data, mcan_rx_element_fifo_1::data, MCAN_RX_ELEMENT_R1_Type::DLC, extended_receive_index, MCAN_ACKNOWLEDGE_ERROR, MCAN_BUS_OFF, mcan_clear_interrupt_status(), MCAN_FORMAT_ERROR, mcan_get_rx_buffer_element(), mcan_get_rx_fifo_0_element(), mcan_get_rx_fifo_1_element(), mcan_instance, mcan_read_interrupt_status(), MCAN_RX_BUFFER_NEW_MESSAGE, mcan_rx_clear_buffer_status(), MCAN_RX_FIFO_0_NEW_MESSAGE, MCAN_RX_FIFO_1_NEW_MESSAGE, mcan_rx_fifo_acknowledge(), mcan_rx_get_buffer_status(), mcan_stop(), mcan_rx_element_buffer::R0, mcan_rx_element_buffer::R1, mcan_rx_element_fifo_0::R1, mcan_rx_element_fifo_1::R1, rx_element_buffer, rx_element_fifo_0, rx_element_fifo_1, standard_receive_index, status, and MCAN_RX_ELEMENT_R0_Type::XTD.

static void mcan_send_extended_message ( uint32_t  id_value, uint8_t *  data, uint32_t  data_length  )

static

send extended MCAN message,

Parameters

id_value	extended MCAN ID
*data	content to be sent
data_length	data length code

References MCAN_TX_ELEMENT_T1_Type::bit, mcan_tx_element::data, MCAN_TX_ELEMENT_T1_Type::DLC, mcan_get_tx_buffer_element_defaults(), mcan_instance, mcan_set_tx_buffer_element(), MCAN_TX_BUFFER_INDEX, MCAN_TX_ELEMENT_T0_EXTENDED_ID, MCAN_TX_ELEMENT_T0_XTD, mcan_tx_transfer_request(), MCAN_TX_ELEMENT_T0_Type::reg, mcan_tx_element::T0, and mcan_tx_element::T1.

Referenced by main().

static void mcan_send_standard_message ( uint32_t  id_value, uint8_t *  data, uint32_t  data_length  )

static

send standard MCAN message,

Parameters

id_value	standard MCAN ID
*data	content to be sent
data_length	data length code

References MCAN_TX_ELEMENT_T1_Type::bit, mcan_tx_element::data, MCAN_TX_ELEMENT_T1_Type::DLC, mcan_get_tx_buffer_element_defaults(), mcan_instance, mcan_set_tx_buffer_element(), MCAN_TX_BUFFER_INDEX, MCAN_TX_ELEMENT_T0_STANDARD_ID, mcan_tx_transfer_request(), MCAN_TX_ELEMENT_T0_Type::reg, mcan_tx_element::T0, and mcan_tx_element::T1.

Referenced by main().

static void mcan_set_extended_filter_0 ( void  )

static

set receive extended MCAN ID, dedicated buffer

References MCAN_EXTENDED_MESSAGE_FILTER_ELEMENT_F0_Type::bit, MCAN_EXTENDED_MESSAGE_FILTER_ELEMENT_F1_Type::bit, MCAN_EXTENDED_MESSAGE_FILTER_ELEMENT_F0_Type::EFEC, MCAN_EXTENDED_MESSAGE_FILTER_ELEMENT_F0_Type::EFID1, MCAN_EXTENDED_MESSAGE_FILTER_ELEMENT_F1_Type::EFID2, mcan_extended_message_filter_element::F0, mcan_extended_message_filter_element::F1, mcan_enable_interrupt(), MCAN_EXTENDED_MESSAGE_FILTER_ELEMENT_F0_EFEC_STRXBUF_Val, mcan_get_extended_message_filter_element_default(), mcan_instance, MCAN_RX_BUFFER_NEW_MESSAGE, MCAN_RX_EXTENDED_FILTER_ID_0, MCAN_RX_EXTENDED_FILTER_ID_0_BUFFER_INDEX, MCAN_RX_EXTENDED_FILTER_INDEX_0, and mcan_set_rx_extended_filter().

Referenced by main().

static void mcan_set_extended_filter_1 ( void  )

static

set receive extended MCAN ID,FIFO buffer.

References MCAN_EXTENDED_MESSAGE_FILTER_ELEMENT_F0_Type::bit, MCAN_EXTENDED_MESSAGE_FILTER_ELEMENT_F0_Type::EFID1, mcan_extended_message_filter_element::F0, mcan_enable_interrupt(), mcan_get_extended_message_filter_element_default(), mcan_instance, MCAN_RX_EXTENDED_FILTER_ID_1, MCAN_RX_EXTENDED_FILTER_INDEX_1, MCAN_RX_FIFO_1_NEW_MESSAGE, and mcan_set_rx_extended_filter().

Referenced by main().

static void mcan_set_standard_filter_0 ( void  )

static

set receive standard MCAN ID, dedicated buffer

References MCAN_STANDARD_MESSAGE_FILTER_ELEMENT_S0_Type::bit, mcan_enable_interrupt(), mcan_get_standard_message_filter_element_default(), mcan_instance, MCAN_RX_BUFFER_NEW_MESSAGE, MCAN_RX_STANDARD_FILTER_ID_0, MCAN_RX_STANDARD_FILTER_ID_0_BUFFER_INDEX, MCAN_RX_STANDARD_FILTER_INDEX_0, mcan_set_rx_standard_filter(), MCAN_STANDARD_MESSAGE_FILTER_ELEMENT_S0_SFEC_STRXBUF_Val, mcan_standard_message_filter_element::S0, MCAN_STANDARD_MESSAGE_FILTER_ELEMENT_S0_Type::SFEC, MCAN_STANDARD_MESSAGE_FILTER_ELEMENT_S0_Type::SFID1, and MCAN_STANDARD_MESSAGE_FILTER_ELEMENT_S0_Type::SFID2.

Referenced by main().

static void mcan_set_standard_filter_1 ( void  )

static

set receive standard MCAN ID,FIFO buffer.

References MCAN_STANDARD_MESSAGE_FILTER_ELEMENT_S0_Type::bit, mcan_enable_interrupt(), mcan_get_standard_message_filter_element_default(), mcan_instance, MCAN_RX_FIFO_0_NEW_MESSAGE, MCAN_RX_STANDARD_FILTER_ID_1, MCAN_RX_STANDARD_FILTER_INDEX_1, mcan_set_rx_standard_filter(), mcan_standard_message_filter_element::S0, and MCAN_STANDARD_MESSAGE_FILTER_ELEMENT_S0_Type::SFID1.

Referenced by main().

volatile uint32_t extended_receive_index = 0

static

Referenced by MCAN1_INT0_Handler().

struct mcan_module mcan_instance

static

Referenced by configure_mcan(), MCAN1_INT0_Handler(), mcan_send_extended_message(), mcan_send_standard_message(), mcan_set_extended_filter_0(), mcan_set_extended_filter_1(), mcan_set_standard_filter_0(), and mcan_set_standard_filter_1().

struct mcan_rx_element_buffer rx_element_buffer

static

Referenced by MCAN1_INT0_Handler().

struct mcan_rx_element_fifo_0 rx_element_fifo_0

static

Referenced by MCAN1_INT0_Handler().

struct mcan_rx_element_fifo_1 rx_element_fifo_1

static

Referenced by MCAN1_INT0_Handler().

volatile uint32_t standard_receive_index = 0

static

Referenced by MCAN1_INT0_Handler().

uint8_t tx_message_0[CONF_MCAN_ELEMENT_DATA_SIZE]

static

Referenced by configure_mcan(), and main().

uint8_t tx_message_1[CONF_MCAN_ELEMENT_DATA_SIZE]

static

Referenced by configure_mcan(), and main().