/*******************************************************************
*
*    DESCRIPTION: 射頻NA5TR1的初始化程序
*
*    AUTHOR:
*
*    HISTORY:
*
*    DATE:2008-6-14
*
*******************************************************************/

/** include files **/
#include "includes.h"
#include "radio.h"
/** local definitions **/

/* default settings */
/** 
 * 初始化射頻芯片的中斷口
 * 
 */
void RadioVectorInit(void);
/** 
 * 初始化射頻的SPI口
 * 
 */
void  RadioSpiInit(void);
/** 
 * 初始化射頻芯片想關的GPIO
 * 
 */
void RadioGPIOInit(void);
/** external functions **/

/** external data **/

/** internal functions **/

/** public data **/

/** private data **/

/** public functions **/
/** 
 * 射頻芯片有關的初始化
 * 
 */
void  RadioInit(void)
{
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB |

						   RCC_APB2Periph_SPI1|RCC_APB2Periph_AFIO, ENABLE);

	RadioGPIOInit();
	RadioSpiInit();
	RadioVectorInit();

}
/** private functions **/

/** 
 * 初始化射頻的SPI口
 * 
 */
void  RadioSpiInit(void)
{
	SPI_InitTypeDef     SPI_InitStructure;



	SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;

	SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;

	SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low;

	SPI_InitStructure.SPI_CPHA = SPI_CPHA_1Edge;

	SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;

	SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_4;

	SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_LSB;

	SPI_InitStructure.SPI_CRCPolynomial = 7;

	SPI_InitStructure.SPI_Mode = SPI_Mode_Master;

	SPI_Init(SPI1, &SPI_InitStructure);

	SPI_Cmd(SPI1,ENABLE);

}
/** 
 * 初始化射頻芯片想關的GPIO
 * 
 */
void RadioGPIOInit(void)
{
	GPIO_InitTypeDef      GPIO_InitStructure;


	/* Configure SPI1 pins: SCK, MISO and MOSI ---------------------------------*/
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5 |  GPIO_Pin_7;	 
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;				
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;				
	GPIO_Init(GPIOA, &GPIO_InitStructure);

	GPIO_InitStructure.GPIO_Pin =  GPIO_Pin_6 ;	 
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;				
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;				
	GPIO_Init(GPIOA, &GPIO_InitStructure);

	//PA.2 中斷輸入腳
	GPIO_InitStructure.GPIO_Pin = NANO_INT_PIN;
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
	GPIO_Init(NANO_INT_CTRL_PORT, &GPIO_InitStructure);


	//PA.1 reset 腳　
	GPIO_InitStructure.GPIO_Pin = NANO_RESET_PIN;
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
	GPIO_Init(NANO_RST_CTRL_PORT, &GPIO_InitStructure);

	//PB.11 SPI CS腳　
	GPIO_InitStructure.GPIO_Pin = NANO_CS_PIN;
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
	GPIO_Init(NANO_CS_CTRL_PORT, &GPIO_InitStructure);

}

/** 
 * 初始化射頻芯片的中斷口
 * 
 */
void RadioVectorInit(void)
{
   EXTI_InitTypeDef EXTI_InitStructure;
   NVIC_InitTypeDef NVIC_InitStructure;

  GPIO_EXTILineConfig(GPIO_PortSourceGPIOB, GPIO_PinSource12);

  /* Configure EXTI Line2 to generate an interrupt on falling edge */  
  EXTI_InitStructure.EXTI_Line = EXTI_Line2;
  EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
  EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
  EXTI_InitStructure.EXTI_LineCmd = ENABLE;
  EXTI_Init(&EXTI_InitStructure);

  
  /* Configure one bit for preemption priority */
  NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
  
  /* Enable the EXTI2 Interrupt */
  NVIC_InitStructure.NVIC_IRQChannel = EXTI2_IRQChannel;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);
}