hw_config.c

STM32XXXX usb从设备和住设备的应用源代码

void USB_Cable_Config (FunctionalState NewState)
{ 
  if (NewState != DISABLE)
  {
    GPIO_ResetBits(USB_DISCONNECT, USB_DISCONNECT_PIN);
  }
  else
  {
    GPIO_SetBits(USB_DISCONNECT, USB_DISCONNECT_PIN);
  }
}

/*******************************************************************************
* Function Name  : GPIO_Configuration
* Description    : Configures the different GPIO ports.
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
void GPIO_Configuration(void)
{
  GPIO_InitTypeDef GPIO_InitStructure;
  
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIO_DISCONNECT | RCC_APB2Periph_GPIO_KEY
                         | RCC_APB2Periph_GPIO_TAMPER | RCC_APB2Periph_GPIO_IOAIN 
                         | RCC_APB2Periph_GPIO_LED, ENABLE);   
  
 
  /* USB_DISCONNECT used as USB pull-up */
  GPIO_InitStructure.GPIO_Pin = USB_DISCONNECT_PIN;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_OD;
  GPIO_Init(USB_DISCONNECT, &GPIO_InitStructure); 
  
  /* Configure the KEY IO as Input Floating */
  GPIO_InitStructure.GPIO_Pin = GPIO_KEY_PIN;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
  GPIO_Init(GPIO_KEY, &GPIO_InitStructure);
  
  /* Configure the Tamper IO as Input Floating */
  GPIO_InitStructure.GPIO_Pin = GPIO_TAMPER_PIN;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
  GPIO_Init(GPIO_TAMPER, &GPIO_InitStructure);
  
  /* Configure Potentiometer IO as analog input -------------------------*/
  GPIO_InitStructure.GPIO_Pin = GPIO_IOAIN_PIN;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
  GPIO_Init(GPIO_IOAIN, &GPIO_InitStructure);
  
  /* Configure the LED1, LED2, LED3 & LED4 IOs as Output PP */
  GPIO_InitStructure.GPIO_Pin = GPIO_LED1_PIN | GPIO_LED2_PIN | GPIO_LED3_PIN | GPIO_LED4_PIN;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
  GPIO_Init(GPIO_LED, &GPIO_InitStructure);
  
}
/*******************************************************************************
* Function Name : EXTI_Configuration.
* Description   : Configure the EXTI lines for Key and Tamper push buttons.
* Input         : None.
* Output        : None.
* Return value  : The direction value.
*******************************************************************************/
void EXTI_Configuration(void)
{
  EXTI_InitTypeDef EXTI_InitStructure;
   
  /* Enable the AFIO Clock */
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);  
  
  /* Connect Key to the correspondent EXTI line */
  GPIO_EXTILineConfig(GPIO_KEY_PORTSOURCE, GPIO_KEY_PINSOURCE);
  
  /* Configure Key EXTI line to generate an interrupt on rising & falling edges */  
  EXTI_InitStructure.EXTI_Line = GPIO_KEY_EXTI_Line;
  EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
  EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising_Falling;
  EXTI_InitStructure.EXTI_LineCmd = ENABLE;
  EXTI_Init(&EXTI_InitStructure);

  /* Clear the Key EXTI line pending bit */
  EXTI_ClearITPendingBit(GPIO_KEY_EXTI_Line);
  
  
  /* Connect Tamper puch button to the correspondent EXTI line */
  GPIO_EXTILineConfig(GPIO_TAMPER_PORTSOURCE, GPIO_TAMPER_PINSOURCE);
  
  /* Configure Tamper EXTI Line to generate an interrupt rising & falling edges */  
  EXTI_InitStructure.EXTI_Line = GPIO_TAMPER_EXTI_Line;
  EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
  EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising_Falling;
  EXTI_InitStructure.EXTI_LineCmd = ENABLE;
  EXTI_Init(&EXTI_InitStructure);

  /* Clear the Tamper EXTI line pending bit */
  EXTI_ClearITPendingBit(GPIO_TAMPER_EXTI_Line);
  
}

/*******************************************************************************
* Function Name : ADC_Configuration.
* Description   : Configure the ADC and DMA.
* Input         : None.
* Output        : None.
* Return value  : The direction value.
*******************************************************************************/
void ADC_Configuration(void)
{
  ADC_InitTypeDef ADC_InitStructure;
  DMA_InitTypeDef DMA_InitStructure;

  /* Enable DMA1 clock */
  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);

  /* Enable ADC1 clock */
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
  
  /* DMA1 channel1 configuration ---------------------------------------------*/
  DMA_DeInit(DMA1_Channel1);
  DMA_InitStructure.DMA_PeripheralBaseAddr = ADC1_DR_Address;
  DMA_InitStructure.DMA_MemoryBaseAddr = (u32)&ADC_ConvertedValueX;
  DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
  DMA_InitStructure.DMA_BufferSize = 1;
  DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
  DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Disable;
  DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;
  DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;
  DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
  DMA_InitStructure.DMA_Priority = DMA_Priority_High;
  DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
  DMA_Init(DMA1_Channel1, &DMA_InitStructure);
  
  /* Enable DMA1 channel1 */
  DMA_Cmd(DMA1_Channel1, ENABLE);
  
  /* Enable the DMA1 Channel1 Transfer complete interrupt */
  DMA_ITConfig(DMA1_Channel1, DMA_IT_TC, ENABLE);
     
  /* ADC1 configuration ------------------------------------------------------*/
  ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;
  ADC_InitStructure.ADC_ScanConvMode = ENABLE;
  ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
  ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;
  ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
  ADC_InitStructure.ADC_NbrOfChannel = 1;
  ADC_Init(ADC1, &ADC_InitStructure);

  /* ADC1 regular channel configuration */ 
  ADC_RegularChannelConfig(ADC1, ADC_AIN_CHANNEL, 1, ADC_SampleTime_55Cycles5);

  /* Enable ADC1 DMA */
  ADC_DMACmd(ADC1, ENABLE);
  
  /* Enable ADC1 */
  ADC_Cmd(ADC1, ENABLE);

  /* Enable ADC1 reset calibaration register */   
  ADC_ResetCalibration(ADC1);
  /* Check the end of ADC1 reset calibration register */
  while(ADC_GetResetCalibrationStatus(ADC1));

  /* Start ADC1 calibaration */
  ADC_StartCalibration(ADC1);
  
  /* Check the end of ADC1 calibration */
  while(ADC_GetCalibrationStatus(ADC1));  
}
/*******************************************************************************
* Function Name  : Get_SerialNum.
* Description    : Create the serial number string descriptor.
* Input          : None.
* Output         : None.
* Return         : None.
*******************************************************************************/
void Get_SerialNum(void)
{
  u32 Device_Serial0, Device_Serial1, Device_Serial2;
  
  Device_Serial0 = *(u32*)(0x1FFFF7E8);
  Device_Serial1 = *(u32*)(0x1FFFF7EC);
  Device_Serial2 = *(u32*)(0x1FFFF7F0);
  
  if(Device_Serial0 != 0)
  {
     CustomHID_StringSerial[2] = (u8)(Device_Serial0 & 0x000000FF);  
     CustomHID_StringSerial[4] = (u8)((Device_Serial0 & 0x0000FF00) >> 8);
     CustomHID_StringSerial[6] = (u8)((Device_Serial0 & 0x00FF0000) >> 16);
     CustomHID_StringSerial[8] = (u8)((Device_Serial0 & 0xFF000000) >> 24);  
     
     CustomHID_StringSerial[10] = (u8)(Device_Serial1 & 0x000000FF);  
     CustomHID_StringSerial[12] = (u8)((Device_Serial1 & 0x0000FF00) >> 8);
     CustomHID_StringSerial[14] = (u8)((Device_Serial1 & 0x00FF0000) >> 16);
     CustomHID_StringSerial[16] = (u8)((Device_Serial1 & 0xFF000000) >> 24); 
     
     CustomHID_StringSerial[18] = (u8)(Device_Serial2 & 0x000000FF);  
     CustomHID_StringSerial[20] = (u8)((Device_Serial2 & 0x0000FF00) >> 8);
     CustomHID_StringSerial[22] = (u8)((Device_Serial2 & 0x00FF0000) >> 16);
     CustomHID_StringSerial[24] = (u8)((Device_Serial2 & 0xFF000000) >> 24); 
  }   
}
/******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/