Exemplo n.º 1
0
/**
  * @brief  Main program.
  * @param  None
  * @retval None
  */
int main(void)
{
  /*!< At this stage the microcontroller clock setting is already configured, 
       this is done through SystemInit() function which is called from startup
       file (startup_stm32f072xb.s) before to branch to application main.
       To reconfigure the default setting of SystemInit() function, refer to
       system_stm32f0xx.c file
  
     PLL is set to x12 with  a PREDIV /2 so the system clock SYSCLK = 48MHz
     */

  ConfigureGPIO();
  SetClockForADC();
  CalibrateADC(); 
  ConfigureGPIOforADC();
  EnableADC();
  ConfigureADC();
  ConfigureDMA();
  ADC1->CR |= ADC_CR_ADSTART; /* start the ADC conversions */
  GPIOC->BSRR = (1<<9); /* switch on the green led */    
  __WFI(); /* No interrupt should occur, as only error could trigger an interrupt */ 
  GPIOC->BRR = (1<<9); /* switch off the green led */
  DisableADC();
  SysTick_Config(48000); /* 1ms config */
  while (1) /* Infinite loop */
  {
  }
}
Exemplo n.º 2
0
/**
  * @brief  Main program.
  * @param  None
  * @retval None
  */
int main(void)
{
  /*!< At this stage the microcontroller clock setting is already configured, 
       this is done through SystemInit() function which is called from startup
       file (startup_stm32f072xb.s) before to branch to application main.
       To reconfigure the default setting of SystemInit() function, refer to
       system_stm32f0xx.c file
  
     PLL is set to x12 with  a PREDIV /2 so the system clock SYSCLK = 48MHz
     */
  ConfigureGPIO();
  ConfigureExternalIT();
  RCC->APB2ENR = RCC_APB2ENR_ADC1EN; /* Enable the peripheral clock of the ADC */
  RCC->CFGR |= RCC_CFGR_PPRE_2; /* Set peripheral prescaler to /2 so PCLK = HCLK/2 = 24MHz */
  CalibrateADC(); 
  EnableADC();
  ConfigureADC();
  ConfigureDMA();
  ADC1->CR |= ADC_CR_ADSTART; /* Start the ADC conversions */
      
  while (error < ERROR_UNEXPECTED_DMA_IT) /* loop till no unrecoverable error */
  {
    __WFI();
  }
  
  DisableADC();
  SysTick_Config(48000); /* 1ms config */
  while (1) /* Infinite loop */
  {
  }
}
Exemplo n.º 3
0
/**
  * @brief  Main program.
  * @param  None
  * @retval None
  */
int main(void)
{
  /*!< At this stage the microcontroller clock setting is already configured, 
       this is done through SystemInit() function which is called from startup
       file (startup_stm32f072xb.s) before to branch to application main.
       To reconfigure the default setting of SystemInit() function, refer to
       system_stm32f0xx.c file
  
     PLL is set to x12 with  a PREDIV /2 so the system clock SYSCLK = 48MHz
     */

  ConfigureGPIO();
  ConfigureExternalIT();
  SetClockForADC();
  CalibrateADC();
  ConfigureGPIOforADC();
  EnableADC();
  ConfigureADC();
  CurrentChannel = 0; /* Initializes the CurrentChannel */
  ADC1->CR |= ADC_CR_ADSTART; /* start the ADC conversions */

  while (error == 0) /* loop till no unrecoverable error, should never be exited */
  {   
    __WFI();
  }  
  DisableADC();
  SysTick_Config(48000); /* 1ms config */
  while (1) /* Infinite loop */
  {
  }
}
Exemplo n.º 4
0
/**
  * @brief  Main program.
  * @param  None
  * @retval None
  */
int main(void)
{
  /*!< At this stage the microcontroller clock setting is already configured, 
       this is done through SystemInit() function which is called from startup
       file (startup_stm32f072xb.s) before to branch to application main.
       To reconfigure the default setting of SystemInit() function, refer to
       system_stm32f0xx.c file
  
      PLL is set to x12 with  a PREDIV /2 so the system clock SYSCLK = 48MHz
     */
/* defines the upper limit 15% above the factory value 
   the value is adapted according to the application power supply
   versus the factory calibration power supply */
uint16_t vrefint_high = (*VREFINT_CAL_ADDR)* VDD_CALIB / VDD_APPLI * 115 / 100; 
/* defines the lower limit 15% below the factory value 
   the value is adapted according to the application power supply
   versus the factory calibration power supply */
uint16_t vrefint_low = (*VREFINT_CAL_ADDR) * VDD_CALIB / VDD_APPLI * 85 / 100;

  ConfigureGPIO();
  SetClockForADC();
  CalibrateADC(); 
  EnableADC();
  ConfigureADC();
  ConfigureTIM15();
  ADC1->CR |= ADC_CR_ADSTART; /* start the ADC conversion */
  
  while (error == 0) /* Loop till the measure is in the range */
  {   
    while ((ADC1->ISR & ADC_ISR_EOC) == 0); /* wait end of conversion */

    if ((ADC1->DR > vrefint_high) && (ADC1->DR > vrefint_low))
    {
      error |= WARNING_MEASURE; /* report a warning, the measure being out of range due to VDD shift */
    }
    GPIOC->ODR ^= (1<<9); /* Toggle green led on PC9 */
  }
  DisableADC();
  SysTick_Config(48000); /* 1ms config */
  while(1)
  {
  }
}