main_sam4l.c File Reference

Low Power Application.

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

#include "asf.h"

Macros
#define	PRIM_NUMS   8
#define	STRING_EOL   "\r"
#define	STRING_HEADER

Functions
static void	app_prime_number_run (void)
static void	ast_per_callback (void)
	AST interrupt handler. More...
static void	button_handler (void)
static void	config_ast (void)
	Initialize AST to generate 1Hz counter. More...
static void	config_backup_wakeup (void)
static void	configure_button (void)
static void	configure_console (void)
	Configure serial console. More...
static void	display_menu_core (void)
int	main (void)
	Low power application entry point. More...
static void	test_active_mode (void)
	Test active mode. More...
static void	test_backup_mode (void)
static void	test_core (void)
	Test Core consumption. More...
static void	test_retention_mode (void)
static void	test_wait_mode (void)

Variables
volatile uint32_t	g_ul_button_pressed = 0
	Button pressed flag. More...

#define PRIM_NUMS   8

Referenced by app_prime_number_run().

#define STRING_EOL   "\r"

#define STRING_HEADER

Value:

"-- Low Power Demo --\r\n" \
"-- "BOARD_NAME" --\r\n" \
"-- Compiled: "__DATE__" "__TIME__" --"STRING_EOL

Referenced by main().

static void app_prime_number_run ( void  )

static

References PRIM_NUMS.

Referenced by test_active_mode().

static void ast_per_callback ( void  )

static

AST interrupt handler.

References ast_clear_interrupt_flag(), AST_INTERRUPT_PER, and ast_stop().

Referenced by config_ast().

static void button_handler ( void  )

static

References ast_stop(), ast_write_counter_value(), BUTTON_0_EIC_LINE, eic_line_clear_interrupt(), eic_line_interrupt_is_pending(), and g_ul_button_pressed.

Referenced by configure_button().

static void config_ast ( void  )

static

Initialize AST to generate 1Hz counter.

References ast_clear_interrupt_flag(), AST_COUNTER_MODE, ast_enable(), ast_enable_wakeup(), AST_INTERRUPT_PER, AST_OSC_1KHZ, ast_per_callback(), AST_PSEL_32KHZ_1HZ, ast_set_callback(), ast_set_config(), ast_stop(), AST_WAKEUP_PER, ast_write_periodic0_value(), ast_config::counter, ast_config::mode, osc_enable(), OSC_ID_OSC32, osc_is_ready(), ast_config::osc_type, osc_wait_ready(), and ast_config::psel.

Referenced by test_core().

static void config_backup_wakeup ( void  )

static

Retain I/O lines after wakeup from backup. Disable to undo the previous retention state then enable.

References bpm_disable_io_retention(), bpm_enable_fast_wakeup(), bpm_enable_io_retention(), and bpm_enable_wakeup_source().

Referenced by test_core().

static void configure_button ( void  )

static

References BUTTON_0_EIC_LINE, button_handler(), eic_line_config::eic_async, EIC_ASYNCH_MODE, eic_line_config::eic_edge, EIC_EDGE_FALLING_EDGE, eic_enable(), eic_line_config::eic_filter, EIC_FILTER_DISABLED, eic_line_config::eic_level, EIC_LEVEL_LOW_LEVEL, eic_line_enable(), eic_line_set_callback(), eic_line_set_config(), eic_line_config::eic_mode, and EIC_MODE_EDGE_TRIGGERED.

Referenced by test_core().

static void configure_console ( void  )

static

Configure serial console.

References uart_rs232_options::baudrate, CONF_UART, CONF_UART_BAUDRATE, CONF_UART_CHAR_LENGTH, CONF_UART_PARITY, CONF_UART_STOP_BITS, and stdio_serial_init().

Referenced by main().

static void display_menu_core ( void  )

static

Referenced by test_core().

int main

(

void

)

Low power application entry point.

Returns

Unused (ANSI-C compatibility).

References board_init(), configure_console(), STRING_HEADER, sysclk_init(), and test_core().

static void test_active_mode ( void  )

static

Test active mode.

References app_prime_number_run(), BUTTON_0_NAME, and g_ul_button_pressed.

Referenced by test_core().

static void test_backup_mode ( void  )

static

References ast_start(), delay_ms, SLEEPMGR_BACKUP, and sleepmgr_sleep().

Referenced by test_core().

static void test_core ( void  )

static

Test Core consumption.

References bpm_configure_power_scaling(), bpm_get_status(), BPM_PS_0, BPM_PS_1, CONF_UART, config_ast(), config_backup_wakeup(), configure_button(), display_menu_core(), test_active_mode(), test_backup_mode(), test_retention_mode(), test_wait_mode(), and usart_read().

Referenced by main().

static void test_retention_mode ( void  )

static

References ast_start(), BUTTON_0_NAME, delay_ms, SLEEPMGR_RET, and sleepmgr_sleep().

Referenced by test_core().

static void test_wait_mode ( void  )

static

References ast_start(), BUTTON_0_NAME, delay_ms, sleepmgr_sleep(), and SLEEPMGR_WAIT.

Referenced by test_core().

volatile uint32_t g_ul_button_pressed = 0

Button pressed flag.

Referenced by button_handler(), and test_active_mode().