lin_mngt_example.c File Reference

LIN example for SAM.

Copyright (c) 2012-2018 Microchip Technology Inc. and its subsidiaries.

#include "asf.h"
#include "led.h"

Macros
#define	LIN_FIRST_BYTE   0x55
	First byte for test. More...
#define	LIN_FRAME_ID_12   0x12
	LIN frame number. More...
#define	LIN_LED0_WAIT_COUNTER   10
	LED0 wait count. More...
#define	LIN_MASTER_NODE_NUM   0
	LIN master node number. More...
#define	LIN_SLAVE_NODE_NUM   0
	LIN slave node number. More...
#define	STRING_EOL   "\r"
#define	STRING_HEADER
#define	TC_CHANNEL   0
	Timer counter channel used. More...
#define	TC_FREQ   20
	Timer counter frequency in Hz. More...

Functions
static void	configure_console (void)
	Configure UART console. More...
static void	configure_tc (void)
	Configure Timer Counter 0 (TC0) to generate an interrupt every 200ms. More...
static void	display_menu (void)
	Display the user menu on the UART. More...
static void	lin_master_task_ID12 (void)
	lin_master_task_ID12 More...
static void	lin_slave_task_ID12 (uint8_t *uc_buf)
	lin_slave_task_ID12 More...
int	main (void)
	This is an example demonstrating the LIN mode of USART IP functionalities using a dedicated USART LIN driver. More...
void	TC0_Handler (void)
	Interrupt handler for TC0. More...
void	USART0_Handler (void)
	Interrupt handler for USART. More...

Variables
uint8_t	lin_data_node [8]
	Local Buffer for emission. More...
static uint32_t	lin_led1_counter = 0

#define LIN_FIRST_BYTE   0x55

First byte for test.

Referenced by lin_master_task_ID12(), and lin_slave_task_ID12().

#define LIN_FRAME_ID_12   0x12

LIN frame number.

Referenced by lin_master_task_ID12(), and main().

#define LIN_LED0_WAIT_COUNTER   10

LED0 wait count.

Referenced by lin_slave_task_ID12().

#define LIN_MASTER_NODE_NUM   0

LIN master node number.

Referenced by lin_master_task_ID12(), and main().

#define LIN_SLAVE_NODE_NUM   0

LIN slave node number.

Referenced by main(), and USART0_Handler().

#define STRING_EOL   "\r"

#define STRING_HEADER

Value:

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

Referenced by main().

#define TC_CHANNEL   0

Timer counter channel used.

#define TC_FREQ   20

Timer counter frequency in Hz.

Referenced by configure_tc().

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_tc ( void  )

static

Configure Timer Counter 0 (TC0) to generate an interrupt every 200ms.

This interrupt will be used to flush USART input and echo back.

References pmc_enable_periph_clk(), sysclk_get_cpu_hz(), tc_enable_interrupt(), tc_find_mck_divisor(), TC_FREQ, tc_init(), and tc_write_rc().

Referenced by main().

static void display_menu ( void  )

static

Display the user menu on the UART.

Referenced by main().

static void lin_master_task_ID12 ( void  )

static

lin_master_task_ID12

References lin_data_node, LIN_FIRST_BYTE, LIN_FRAME_ID_12, LIN_MASTER_NODE_NUM, and lin_send_cmd().

Referenced by TC0_Handler().

static void lin_slave_task_ID12 ( uint8_t *  uc_buf )

static

lin_slave_task_ID12

References LIN_FIRST_BYTE, LIN_LED0_WAIT_COUNTER, and lin_led1_counter.

Referenced by main().

int main

(

void

)

This is an example demonstrating the LIN mode of USART IP functionalities using a dedicated USART LIN driver.

References board_init(), configure_console(), configure_tc(), display_menu(), gpio_set_pin_high, st_lin_message::lin_cmd, lin_data_node, LIN_FRAME_ID_12, lin_init(), LIN_MASTER_NODE_NUM, lin_register_descriptor(), LIN_SLAVE_NODE_NUM, lin_slave_task_ID12(), pmc_enable_periph_clk(), st_lin_message::pt_function, PUBLISH, STRING_HEADER, SUBSCRIBE, sysclk_get_cpu_hz(), sysclk_init(), tc_start(), uart_read(), st_lin_message::uc_dlc, st_lin_message::uc_id, st_lin_message::uc_pt_data, st_lin_message::uc_status, and usart_enable_interrupt().

void TC0_Handler

(

void

)

Interrupt handler for TC0.

Record the number of bytes received, and then restart a read transfer on the USART if the transfer was stopped.

References lin_master_task_ID12(), and tc_get_status().

void USART0_Handler

(

void

)

Interrupt handler for USART.

Echo the bytes received and start the next receive.

References LIN_SLAVE_NODE_NUM, and usart_lin_handler().

uint8_t lin_data_node[8]

Local Buffer for emission.

uint32_t lin_led1_counter = 0

static

Referenced by lin_slave_task_ID12().