low_power_board.c File Reference

Board specific code for low power example.

Copyright (c) 2014-2018 Microchip Technology Inc. and its subsidiaries.

#include "board.h"
#include "pio.h"
#include "pio_handler.h"
#include "pmc.h"
#include "adc.h"
#include "low_power_board.h"

Macros
#define	IRQ_PRIOR_PIO   0
	IRQ priority for PIO (The lower the value, the greater the priority) More...

Functions
void	init_specific_board (void)
	Initialize SAM4 Xplained Pro board for low power test. More...

Variables
uint32_t	g_fastrc_clock_list [][3]
	Clock list from fast RC. More...
uint32_t	g_pll_clock_list [][4]
	Clock list from PLL. More...

#define IRQ_PRIOR_PIO   0

IRQ priority for PIO (The lower the value, the greater the priority)

Referenced by init_specific_board().

void init_specific_board

(

void

)

Initialize SAM4 Xplained Pro board for low power test.

References ADC_CHANNEL_4, adc_enable_channel(), IRQ_PRIOR_PIO, pio_handler_set_priority(), pio_pull_up(), PIO_PULLUP, pio_set_input(), pmc_disable_udpck(), and pmc_enable_periph_clk().

Referenced by init_chip().

uint32_t g_fastrc_clock_list[][3]

Initial value:

= {
    
    {125000,   CKGR_MOR_MOSCRCF_4_MHz,  PMC_MCKR_PRES_CLK_32},
    {250000,   CKGR_MOR_MOSCRCF_4_MHz,  PMC_MCKR_PRES_CLK_16},
    {500000,   CKGR_MOR_MOSCRCF_4_MHz,  PMC_MCKR_PRES_CLK_8},
    {1000000,  CKGR_MOR_MOSCRCF_4_MHz,  PMC_MCKR_PRES_CLK_4},
    {2000000,  CKGR_MOR_MOSCRCF_4_MHz,  PMC_MCKR_PRES_CLK_2},
    {4000000,  CKGR_MOR_MOSCRCF_4_MHz,  PMC_MCKR_PRES_CLK_1},
    {8000000,  CKGR_MOR_MOSCRCF_8_MHz,  PMC_MCKR_PRES_CLK_1},
    {12000000, CKGR_MOR_MOSCRCF_12_MHz, PMC_MCKR_PRES_CLK_1}
}

Clock list from fast RC.

Referenced by user_change_clock().

uint32_t g_pll_clock_list[][4]

Initial value:

= {
    
    
    {24000000, 7, 1, PMC_MCKR_PRES_CLK_4},
    
    {32000000, 7, 1, PMC_MCKR_PRES_CLK_3},
    
    {48000000, 7, 1, PMC_MCKR_PRES_CLK_2},
    
    {64000000, 31, 3, PMC_MCKR_PRES_CLK_2},
    
    {84000000, 13, 1, PMC_MCKR_PRES_CLK_2},
    
    {100000000, 24, 1, PMC_MCKR_PRES_CLK_3},
    
    {120000000, 19, 1, PMC_MCKR_PRES_CLK_2}
}

Clock list from PLL.

Referenced by user_change_clock().