radioinit.c

通过手动烧写flash,实现了stm32的自动更新功能,用户可以再本例程的基础上修改实现通过串口或者网络实现程序的自动更新

/*******************************************************************
*
*    DESCRIPTION: 射频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 */
/** 
 * 初始化射频芯片的中断口
 * 
 */
void RadioVectorInit(void);
/** 
 * 初始化射频的SPI口
 * 
 */
void  RadioSpiInit(void);
/** 
 * 初始化射频芯片想关的GPIO
 * 
 */
void RadioGPIOInit(void);
/** external functions **/

/** external data **/

/** internal functions **/

/** public data **/

/** private data **/

/** public functions **/
/** 
 * 射频芯片有关的初始化
 * 
 */
void  RadioInit(void)
{
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB |

						   RCC_APB2Periph_SPI1|RCC_APB2Periph_AFIO, ENABLE);

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

}
/** private functions **/

/** 
 * 初始化射频的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);

}
/** 
 * 初始化射频芯片想关的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 中断输入脚
	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 脚　
	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脚　
	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);

}

/** 
 * 初始化射频芯片的中断口
 * 
 */
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);
}