afec_example3.c File Reference

AFEC automatic comparison example for SAM.

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

#include <stdio.h>
#include <string.h>
#include <assert.h>
#include "asf.h"

Macros
#define	MAX_DIGITAL   (4095UL)
	The maximal digital value. More...
#define	STRING_EOL   "\r"
#define	STRING_HEADER
#define	VOLT_REF   (3300)
	Reference voltage for AFEC in mv. More...

Functions
static void	afec_print_comp_result (void)
	Callback function for AFEC enter compasion window interrupt. More...
static void	configure_console (void)
	Configure UART console. More...
int	main (void)
	Application entry point. More...

Variables
static uint16_t	gs_us_high_threshold = 0
	High threshold. More...
static uint16_t	gs_us_low_threshold = 0
	Low threshold. More...

#define MAX_DIGITAL   (4095UL)

The maximal digital value.

Referenced by afec_print_comp_result().

#define STRING_EOL   "\r"

#define STRING_HEADER

Value:

"-- AFEC Automatic Comparison Example --\r\n" \
        "-- "BOARD_NAME" --\r\n" \
        "-- Compiled: "__DATE__" "__TIME__" --"STRING_EOL

Referenced by main().

#define VOLT_REF   (3300)

Reference voltage for AFEC in mv.

Referenced by afec_print_comp_result().

static void afec_print_comp_result ( void  )

static

Callback function for AFEC enter compasion window interrupt.

References afec_channel_get_value(), afec_disable_interrupt(), gs_us_high_threshold, gs_us_low_threshold, MAX_DIGITAL, and VOLT_REF.

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().

int main

(

void

)

Application entry point.

Returns

Unused (ANSI-C compatibility).

References afec_ch_get_config_defaults(), afec_ch_set_config(), afec_channel_enable(), afec_channel_set_analog_offset(), AFEC_CMP_MODE_2, afec_enable(), AFEC_GAINVALUE_0, afec_get_config_defaults(), afec_init(), afec_print_comp_result(), afec_set_callback(), afec_set_comparison_mode(), afec_set_comparison_window(), afec_set_trigger(), afec_start_software_conversion(), AFEC_TRIG_SW, board_init(), configure_console(), delay_ms, afec_ch_config::gain, gs_us_high_threshold, gs_us_low_threshold, STRING_HEADER, and sysclk_init().

uint16_t gs_us_high_threshold = 0

static

High threshold.

Referenced by afec_print_comp_result(), and main().

uint16_t gs_us_low_threshold = 0

static

Low threshold.

Referenced by afec_print_comp_result(), and main().