all_init.c

ATMEL ATSAM7S64处理器部分控制程序。

/*********************************************************************************************
* File：	all_init.c
* Author:	Embest z.j.zheng
* Desc：	init the testable functions of the board by the usart
* History:	
*********************************************************************************************/
/*------------------------------------------------------------------------------------------*/
/*								include files												*/
/*------------------------------------------------------------------------------------------*/
#include "Board.h"

/*********************************************************************************************
* name:		SPI_init
* func:		init the SPI
* para:		none
* ret:		none
* modify:
* comment:		
*********************************************************************************************/
void  SPI_Init(void)
{	
	AT91F_SPI_CfgPIO();
	AT91F_SPI_CfgPMC();										    // AT91F_PIOA_CfgPMC();
	AT91F_SPI_Open(0);
	AT91F_SPI_CfgCs(AT91C_BASE_SPI,0,(AT91C_SPI_BITS_8 | AT91C_SPI_CSAAT | AT91C_SPI_NCPHA | AT91C_SPI_SCBR));
	AT91F_SPI_CfgMode(AT91C_BASE_SPI,AT91C_SPI_MSTR);
	AT91F_SPI_DisableIt(AT91C_BASE_SPI,0x3f);					// Disable SPI interrupt
	AT91F_SPI_Enable(AT91C_BASE_SPI);                           // Enable SPI
	
}

/*********************************************************************************************
* name:		adc_init
* func:		adc init
* para:		none		
* ret:		none
* modify:
* comment:		
*********************************************************************************************/
void  adc_Init(void)
{
	AT91F_ADC_CfgModeReg(AT91C_BASE_ADC,AT91C_ADC_TRGEN_DIS | AT91C_ADC_LOWRES_8_BIT | AT91C_ADC_SLEEP_NORMAL_MODE
					| AT91C_ADC_PRESCAL | AT91C_ADC_STARTUP | AT91C_ADC_SHTIM);
	AT91F_ADC_EnableChannel(AT91C_BASE_ADC,AT91C_ADC_CH4);
	AT91F_ADC_StartConversion(AT91C_BASE_ADC);
	
}	

/*********************************************************************************************
* name:		pwm_Init
* func:		init the pwm
* para:		none
* ret:		none
* modify:
* comment:		
*********************************************************************************************/
void pwm_Init(void)
{
	AT91F_PWMC_CH0_CfgPIO();				
	AT91F_PWMC_CfgPMC();
	AT91F_PWMC_InterruptDisable(AT91C_BASE_PWMC,AT91C_PWMC_CHID0);  //Disable PWM Interrupt
	AT91F_PWMC_CfgChannel(AT91C_BASE_PWMC,0,
				(AT91C_PWMC_CPRE_MCK | AT91C_PWMC_CALG | AT91C_PWMC_CPOL | AT91C_PWMC_CPD),
						AT91C_PWMC_CPRD,AT91C_PWMC_CDTY);
}

/*********************************************************************************************
* name:		init_twi
* func:		
* para:		none
* ret:		none
* modify:
* comment:	
*********************************************************************************************/
void twi_Init(void)
{
	// Configure PIO controllers to periph mode, in open drain
	AT91F_TWI_CfgPIO();        
	AT91F_PIO_CfgOpendrain(AT91C_BASE_PIOA,AT91C_PA3_TWD | AT91C_PA4_TWCK);
	
	AT91F_TWI_CfgPMC();

	AT91F_TWI_DisableIt(AT91C_BASE_TWI,-1);                     // Disable TWI IT
	AT91F_TWI_Configure(AT91C_BASE_TWI);                        // Configure TWI in master mode
}

/*********************************************************************************************
* name:		button_Init
* func:		init the button
* para:		none
* ret:		none
* modify:
* comment:		
*********************************************************************************************/
void button_Init(void)
{
	// configure the PIO Lines corresponding to button1 to button4   
	AT91F_PIO_CfgInput( AT91C_BASE_PIOA, SW_MASK ) ;
	AT91F_PIO_InputFilterEnable(AT91C_BASE_PIOA,SW_MASK);       // enable the input filter
	AT91F_PIO_Enable(AT91C_BASE_PIOA,SW_MASK);
}

/*********************************************************************************************
* name:		led_Init
* func:		init the led
* para:		none
* ret:		none
* modify:
* comment:		
*********************************************************************************************/
void led_Init(void)
{
	// then, we configure the PIO Lines corresponding to LED1 to LED3
	// to be outputs. No need to set these pins to be driven by the PIO because it is GPIO pins only.
	AT91F_PIO_CfgOutput( AT91C_BASE_PIOA, LED_MASK ) ;

	// Clear the LED's. On the EB55 we must apply a "1" to turn off LEDs
	AT91F_PIO_SetOutput( AT91C_BASE_PIOA, LED_MASK ) ;
}