parc_example.c File Reference

PARC example.

Copyright (c) 2013-2018 Microchip Technology Inc. and its subsidiaries.

#include <string.h>
#include <asf.h>
#include <conf_board.h>
#include <conf_clock.h>
#include <conf_example.h>
#include <ioport.h>
#include <sysclk.h>

Macros
#define	BUFFER_SIZE   64
	Size of the receive buffer used by the PDCA, in bytes. More...
#define	PDCA_PARC_CHANNEL   0
#define	PDCA_PID_PARC   16
#define	STRING_EOL   "\r"
#define	STRING_HEADER
#define	TC_FREQ   10
	Timer counter frequency in Hz. More...

Functions
static void	configure_console (void)
	Configure UART for debug message output. More...
static void	configure_tc (void)
	Configure Timer Counter 0 (TC0) to generate an interrupt every 200ms. More...
int	main (void)
	Application entry point for PARC example. More...
static void	pdca_parc_callback (enum pdca_channel_status status)
	The callback function for PDCA channel of PARC. More...
void	TC00_Handler (void)
	Interrupt handler for TC00. More...

Variables
static uint8_t	gs_puc_buffer [BUFFER_SIZE]
	Receive buffer. More...
static uint8_t	gs_puc_nextbuffer [BUFFER_SIZE]
	Next Receive buffer. More...
struct parc_config	parc_configex
	PARC configure stuct. More...
pdca_channel_config_t	PDCA_PARC_OPTIONS
	PDCA channel options. More...

#define BUFFER_SIZE   64

Size of the receive buffer used by the PDCA, in bytes.

Referenced by main(), pdca_parc_callback(), and TC00_Handler().

#define PDCA_PARC_CHANNEL   0

Referenced by main(), and pdca_parc_callback().

#define PDCA_PID_PARC   16

#define STRING_EOL   "\r"

#define STRING_HEADER

Value:

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

Referenced by main().

#define TC_FREQ   10

Timer counter frequency in Hz.

Referenced by configure_tc().

static void configure_console ( void  )

static

Configure UART for debug message output.

References uart_rs232_options::baudrate, and stdio_serial_init().

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 sysclk_enable_peripheral_clock(), sysclk_get_peripheral_bus_hz(), tc_enable_interrupt(), tc_find_mck_divisor(), TC_FREQ, tc_init(), and tc_write_rc().

Referenced by main().

int main

(

void

)

Application entry point for PARC example.

Returns

Unused (ANSI-C compatibility).

[parc_variables]

[parc_variables]

[parc_get_defaults]

[parc_get_defaults]

[parc_init_enable_and_start] [parc_init_enable_and_start_1]

[parc_init_enable_and_start_1]

[parc_init_enable_and_start_2]

[parc_init_enable_and_start_2] [parc_init_enable_and_start]

References board_init(), BUFFER_SIZE, parc_config::capture_mode, configure_console(), configure_tc(), gs_puc_buffer, IOPORT_PIN_LEVEL_HIGH, ioport_set_pin_level(), PARC_BOTH_CAPTURE, parc_enable(), PARC_EVEN_CAPTURE, parc_get_config_defaults(), parc_init(), PARC_SMODE_ALWAYS, PARC_SMODE_PCEN1_AND_PCEN2_H, parc_start_capture(), pdca_channel_enable(), pdca_channel_set_callback(), pdca_channel_set_config(), pdca_channel_write_load(), pdca_enable(), pdca_parc_callback(), PDCA_PARC_CHANNEL, parc_config::smode, STRING_HEADER, sysclk_init(), tc_start(), and usart_read().

static void pdca_parc_callback ( enum pdca_channel_status  status )

static

The callback function for PDCA channel of PARC.

Parameters

status

PDCA channel status

References BUFFER_SIZE, gs_puc_buffer, pdca_channel_disable(), pdca_channel_disable_interrupt(), PDCA_PARC_CHANNEL, and UNUSED.

Referenced by main().

void TC00_Handler

(

void

)

Interrupt handler for TC00.

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

References BUFFER_SIZE, ioport_toggle_pin_level(), and tc_get_status().

uint8_t gs_puc_buffer[BUFFER_SIZE]

static

Receive buffer.

Referenced by main(), and pdca_parc_callback().

uint8_t gs_puc_nextbuffer[BUFFER_SIZE]

static

Next Receive buffer.

struct parc_config parc_configex

PARC configure stuct.

pdca_channel_config_t PDCA_PARC_OPTIONS

Initial value:

= {
    .addr = (void *)gs_puc_buffer, 
    .pid = PDCA_PID_PARC, 
    .size = BUFFER_SIZE, 
    .r_addr = (void *)gs_puc_nextbuffer, 
    .r_size = BUFFER_SIZE, 
    .transfer_size = PDCA_MR_SIZE_BYTE 
}

PDCA channel options.