adcife_wm_example.c File Reference

ADCIFE Window Monitor example for SAM4L.

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

#include "asf.h"
#include "stdio_serial.h"
#include "conf_board.h"

Macros
#define	MAX_DIGITAL   (4095)
	The maximal digital value. More...
#define	MENU_HEADER
#define	STRING_EOL   "\r"
#define	STRING_HEADER
#define	VDDANA   3300
#define	VOLT_REF   1000

Functions
static void	adcife_wm_handler (void)
	Callback function for ADCIFE interrupt. More...
static void	configure_console (void)
	Configure UART console. More...
static void	display_info (void)
	Display current information,including voltage on division resistor, thresholds and window monitor mode. More...
static void	display_menu (void)
	Display main menu. More...
static uint32_t	f_to_int (float x)
	Transform float data type to int. More...
static int16_t	get_voltage (void)
	Get voltage from user input (range from 0 to 3300 mv). More...
static uint8_t	get_wm_mode (void)
	Get window monitor mode. More...
int	main (void)
	Example entry point. More...
static void	start_dac (void)
	Start DAC ouput. More...

Variables
struct adc_dev_inst	g_adc_inst
	ADC instance. More...
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   (4095)

The maximal digital value.

Referenced by adcife_wm_handler(), display_info(), and main().

#define MENU_HEADER

Value:

"\n\r-- Menu Choices for this example--\n\r" \
        "-- 0: Modify DAC output value--\n\r" \
        "-- 1: Modify low threshold.--\n\r" \
        "-- 2: Modify high threshold.--\n\r" \
        "-- 3: Choose comparison mode.--\n\r" \
        "-- i: Display ADCIFE information.--\n\r" \
        "-- m: Display this main menu.--\n\r"

Referenced by display_menu().

#define STRING_EOL   "\r"

#define STRING_HEADER

Value:

"-- ADCIFE Window Monitor Example --\r\n" \
        "-- "BOARD_NAME" --\r\n" \
        "-- Compiled: "__DATE__" "__TIME__" --"STRING_EOL

Referenced by main().

#define VDDANA   3300

Referenced by main().

#define VOLT_REF   1000

Referenced by adcife_wm_handler(), display_info(), get_voltage(), and main().

static void adcife_wm_handler ( void  )

static

Callback function for ADCIFE interrupt.

References adc_clear_status(), adc_disable_interrupt(), adc_get_last_conv_value(), adc_get_status(), adc_get_wm_mode(), ADC_WINDOW_MONITOR, g_adc_inst, 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, and stdio_serial_init().

Referenced by main().

static void display_info ( void  )

static

Display current information,including voltage on division resistor, thresholds and window monitor mode.

References adc_get_last_conv_value(), adc_get_wm_mode(), f_to_int(), g_adc_inst, gs_us_high_threshold, gs_us_low_threshold, MAX_DIGITAL, and VOLT_REF.

Referenced by main().

static void display_menu ( void  )

static

Display main menu.

References MENU_HEADER.

Referenced by main().

static uint32_t f_to_int ( float  x )

static

Transform float data type to int.

Referenced by display_info(), and main().

static int16_t get_voltage ( void  )

static

Get voltage from user input (range from 0 to 3300 mv).

References VOLT_REF.

Referenced by main().

static uint8_t get_wm_mode ( void  )

static

Get window monitor mode.

References adc_get_wm_mode(), and g_adc_inst.

Referenced by main().

int main

(

void

)

Example entry point.

Returns

Unused (ANSI-C compatibility).

References ADC_BIPOLAR_SINGLEENDED, adc_ch_set_config(), adc_clear_status(), ADC_CLKSEL_APBCLK, adc_configure_gain(), adc_configure_trigger(), adc_configure_wm_mode(), adc_configure_wm_threshold(), adc_disable_interrupt(), adc_enable(), adc_enable_interrupt(), ADC_GAIN_1X, ADC_GCOMP_DIS, ADC_HWLA_DIS, adc_init(), ADC_INTERNAL_3, ADC_MUXNEG_1, ADC_MUXPOS_3, ADC_PRESCAL_DIV16, ADC_REFSEL_0, ADC_RES_12_BIT, adc_set_callback(), ADC_SPEED_150K, ADC_TRIG_CON, ADC_WINDOW_MONITOR, ADC_WM_MODE_3, ADC_ZOOMRANGE_0, adcife_wm_handler(), board_init(), configure_console(), DACC_MAX_DATA, dacc_write_conversion_data(), delay_ms, display_info(), display_menu(), f_to_int(), g_adc_inst, get_voltage(), get_wm_mode(), gs_us_high_threshold, gs_us_low_threshold, MAX_DIGITAL, adc_config::prescal, adc_ch_config::seq_cfg, start_dac(), STATUS_OK, STRING_HEADER, sysclk_init(), VDDANA, VOLT_REF, and adc_seq_config::zoomrange.

static void start_dac ( void  )

static

Start DAC ouput.

Initialize DAC, set clock and timing, and set DAC to given mode.

References dacc_enable(), dacc_reset(), dacc_set_timing(), dacc_set_transfer_mode(), dacc_write_conversion_data(), and sysclk_enable_peripheral_clock().

Referenced by main().

struct adc_dev_inst g_adc_inst

ADC instance.

Referenced by adcife_read_conv_result(), adcife_set_conv_flag(), adcife_set_wm_flag(), adcife_wm_handler(), display_info(), get_wm_mode(), main(), run_adcife_diff_test(), run_adcife_init_test(), run_adcife_itimer_trig_test(), run_adcife_multichannel_test(), run_adcife_wm_test(), and start_adc().

uint16_t gs_us_high_threshold = 0

static

High threshold.

Referenced by adcife_wm_handler(), display_info(), and main().

uint16_t gs_us_low_threshold = 0

static

Low threshold.

Referenced by adcife_wm_handler(), display_info(), and main().