C++ dmaStreamRelease函数代码示例

/**
 * @brief   Deactivates the SPI peripheral.
 *
 * @param[in] spip      pointer to the @p SPIDriver object
 *
 * @notapi
 */
void spi_lld_stop(SPIDriver *spip) {

  /* If in ready state then disables the SPI clock.*/
  if (spip->state == SPI_READY) {

    /* SPI disable.*/
    spip->spi->CR1 = 0;
    spip->spi->CR2 = 0;
    dmaStreamRelease(spip->dmarx);
    dmaStreamRelease(spip->dmatx);

#if STM32_SPI_USE_SPI1
    if (&SPID1 == spip)
      rccDisableSPI1(FALSE);
#endif
#if STM32_SPI_USE_SPI2
    if (&SPID2 == spip)
      rccDisableSPI2(FALSE);
#endif
#if STM32_SPI_USE_SPI3
    if (&SPID3 == spip)
      rccDisableSPI3(FALSE);
#endif
  }
}

/**
 * @brief   Deactivates the I2C peripheral.
 *
 * @param[in] i2cp      pointer to the @p I2CDriver object
 *
 * @notapi
 */
void i2c_lld_stop(I2CDriver *i2cp) {

  /* If not in stopped state then disables the I2C clock.*/
  if (i2cp->state != I2C_STOP) {

    /* I2C disable.*/
    i2c_lld_abort_operation(i2cp);
    dmaStreamRelease(i2cp->dmatx);
    dmaStreamRelease(i2cp->dmarx);

#if STM32_I2C_USE_I2C1
    if (&I2CD1 == i2cp) {
      nvicDisableVector(I2C1_EV_IRQn);
      nvicDisableVector(I2C1_ER_IRQn);
      rccDisableI2C1(FALSE);
    }
#endif

#if STM32_I2C_USE_I2C2
    if (&I2CD2 == i2cp) {
      nvicDisableVector(I2C2_EV_IRQn);
      nvicDisableVector(I2C2_ER_IRQn);
      rccDisableI2C2(FALSE);
    }
#endif

#if STM32_I2C_USE_I2C3
    if (&I2CD3 == i2cp) {
      nvicDisableVector(I2C3_EV_IRQn);
      nvicDisableVector(I2C3_ER_IRQn);
      rccDisableI2C3(FALSE);
    }
#endif
  }
}

/**
 * @brief   Deactivates the UART peripheral.
 *
 * @param[in] uartp     pointer to the @p UARTDriver object
 *
 * @notapi
 */
void uart_lld_stop(UARTDriver *uartp) {

  if (uartp->state == UART_READY) {
    usart_stop(uartp);
    dmaStreamRelease(uartp->dmarx);
    dmaStreamRelease(uartp->dmatx);

#if STM32_UART_USE_USART1
    if (&UARTD1 == uartp) {
      nvicDisableVector(STM32_USART1_NUMBER);
      rccDisableUSART1(FALSE);
      return;
    }
#endif

#if STM32_UART_USE_USART2
    if (&UARTD2 == uartp) {
      nvicDisableVector(STM32_USART2_NUMBER);
      rccDisableUSART2(FALSE);
      return;
    }
#endif

#if STM32_UART_USE_USART3
    if (&UARTD3 == uartp) {
      nvicDisableVector(STM32_USART3_NUMBER);
      rccDisableUSART3(FALSE);
      return;
    }
#endif
  }
}

/**
 * @brief   Deactivates the ADC peripheral.
 *
 * @param[in] adcp      pointer to the @p ADCDriver object
 *
 * @notapi
 */
void adc_lld_stop(ADCDriver *adcp) {

  /* If in ready state then disables the ADC clock and analog part.*/
  if (adcp->state == ADC_READY) {

    /* Releasing the associated DMA channel.*/
    dmaStreamRelease(adcp->dmastp);

    /* Stopping the ongoing conversion, if any.*/
    adc_lld_stop_adc(adcp);

    /* Disabling ADC analog circuit and regulator.*/
    adc_lld_analog_off(adcp);
    adc_lld_vreg_off(adcp);

#if STM32_ADC_USE_ADC1
    if (&ADCD1 == adcp)
      rccDisableADC12(FALSE);
#endif

#if STM32_ADC_USE_ADC3
    if (&ADCD3 == adcp)
      rccDisableADC34(FALSE);
#endif
  }
}

void gpdrive_deinit(void) {
	if (!m_init_done) {
		return;
	}

	m_init_done = false;

	timer_thd_stop = true;

	while (timer_thd_stop) {
		chThdSleepMilliseconds(1);
	}

	TIM_DeInit(TIM1);
	TIM_DeInit(TIM12);
	ADC_DeInit();
	DMA_DeInit(DMA2_Stream4);
	nvicDisableVector(ADC_IRQn);
	dmaStreamRelease(STM32_DMA_STREAM(STM32_DMA_STREAM_ID(2, 4)));

	// Restore pins
	palSetPadMode(GPIOA, 9, PAL_MODE_ALTERNATE(GPIO_AF_TIM1) |
			PAL_STM32_OSPEED_HIGHEST |
			PAL_STM32_PUDR_FLOATING);
	palSetPadMode(GPIOB, 14, PAL_MODE_ALTERNATE(GPIO_AF_TIM1) |
			PAL_STM32_OSPEED_HIGHEST |
			PAL_STM32_PUDR_FLOATING);
}

/**
 * @brief   Deactivates the SDC peripheral.
 *
 * @param[in] sdcp      pointer to the @p SDCDriver object
 *
 * @notapi
 */
void sdc_lld_stop(SDCDriver *sdcp) {

  if (sdcp->state != BLK_STOP) {

    /* SDIO deactivation.*/
    sdcp->sdmmc->POWER  = 0;
    sdcp->sdmmc->CLKCR  = 0;
    sdcp->sdmmc->DCTRL  = 0;
    sdcp->sdmmc->DTIMER = 0;

    /* DMA stream released.*/
    dmaStreamRelease(sdcp->dma);

    /* Clock deactivation.*/
#if STM32_SDC_USE_SDMMC1
    if (&SDCD1 == sdcp) {
      rccDisableSDMMC1(FALSE);
    }
#endif

#if STM32_SDC_USE_SDMMC2
    if (&SDCD2 == sdcp) {
      rccDisableSDMMC2(FALSE);
    }
#endif
  }
}

/**
 * @brief   Deactivates the DAC peripheral.
 *
 * @param[in] dacp      pointer to the @p DACDriver object
 *
 * @notapi
 */
void dac_lld_stop(DACDriver *dacp) {

  /* If in ready state then disables the DAC clock.*/
  if (dacp->state == DAC_READY) {

    /* DMA disable.*/
    dmaStreamRelease(dacp->dma);

#if STM32_DAC_USE_CHN1
    if (&DACD1 == dacp) {
      dacp->dac->CR &= ~STM32_DAC_CR_EN; /* DAC1 disable.*/
    }
#endif
#if STM32_DAC_USE_CHN2
    if (&DACD2 == dacp) {
      dacp->dac->CR &= ~STM32_DAC_CR_EN << 16; /* DAC1 disable.*/
    }
#endif
#if STM32_DAC_USE_CHN3
    if (&DACD3 == dacp) {
      dacp->dac->CR &= ~STM32_DAC_CR_EN; /* DAC2 disable.*/
      rccDisableDAC2(FALSE); /* DAC Clock disable.*/
    }
#endif
    dacp->tim->CR1 &= ~TIM_CR1_CEN; /* Disable associated timer */
    dacp->state = DAC_STOP;

    if (!(DAC1->CR & (STM32_DAC_CR_EN | STM32_DAC_CR_EN << 16))) {
      /* DAC Clock disable only if all channels are off.*/
      rccDisableDAC1(FALSE);
    }
  }
}

/**
 * @brief   Deactivates the CRC peripheral.
 *
 * @param[in] crcp      pointer to the @p CRCDriver object
 *
 * @notapi
 */
void crc_lld_stop(CRCDriver *crcp) {
#if CRC_USE_DMA == TRUE
  dmaStreamRelease(crcp->dma);
#else
  (void)crcp;
#endif
  rccDisableCRC(FALSE);
}

/**
 * @brief   Deactivates the NAND peripheral.
 *
 * @param[in] nandp         pointer to the @p NANDDriver object
 *
 * @notapi
 */
void nand_lld_stop(NANDDriver *nandp) {

  if (nandp->state == NAND_READY) {
    dmaStreamRelease(nandp->dma);
    nandp->nand->PCR &= ~FSMC_PCR_PBKEN;
    nand_ready_isr_disable(nandp);
    nandp->isr_handler = NULL;
  }
}

/**
 * @brief   Deactivates the I2C peripheral.
 *
 * @param[in] i2cp      pointer to the @p I2CDriver object
 *
 * @notapi
 */
void i2c_lld_stop(I2CDriver *i2cp) {

  /* If not in stopped state then disables the I2C clock.*/
  if (i2cp->state != I2C_STOP) {

    /* I2C disable.*/
    i2c_lld_abort_operation(i2cp);
#if STM32_I2C_USE_DMA == TRUE
    dmaStreamRelease(i2cp->dmatx);
    dmaStreamRelease(i2cp->dmarx);
#endif

#if STM32_I2C_USE_I2C1
    if (&I2CD1 == i2cp) {
#if defined(STM32_I2C1_GLOBAL_NUMBER) || defined(__DOXYGEN__)
      nvicDisableVector(STM32_I2C1_GLOBAL_NUMBER);
#elif defined(STM32_I2C1_EVENT_NUMBER) && defined(STM32_I2C1_ERROR_NUMBER)
      nvicDisableVector(STM32_I2C1_EVENT_NUMBER);
      nvicDisableVector(STM32_I2C1_ERROR_NUMBER);
#else
#error "I2C1 interrupt numbers not defined"
#endif

      rccDisableI2C1(FALSE);
    }
#endif

#if STM32_I2C_USE_I2C2
    if (&I2CD2 == i2cp) {
#if defined(STM32_I2C2_GLOBAL_NUMBER) || defined(__DOXYGEN__)
      nvicDisableVector(STM32_I2C2_GLOBAL_NUMBER);
#elif defined(STM32_I2C2_EVENT_NUMBER) && defined(STM32_I2C2_ERROR_NUMBER)
      nvicDisableVector(STM32_I2C2_EVENT_NUMBER);
      nvicDisableVector(STM32_I2C2_ERROR_NUMBER);
#else
#error "I2C2 interrupt numbers not defined"
#endif

      rccDisableI2C2(FALSE);
    }
#endif
  }
}

/**
 * @brief   Deactivates the I2S peripheral.
 *
 * @param[in] i2sp      pointer to the @p I2SDriver object
 *
 * @notapi
 */
void i2s_lld_stop(I2SDriver *i2sp) {

  /* If in ready state then disables the SPI clock.*/
  if (i2sp->state == I2S_READY) {

    /* SPI disable.*/
    i2sp->spi->CR2 = 0;
    if (NULL != i2sp->dmarx)
      dmaStreamRelease(i2sp->dmarx);
    if (NULL != i2sp->dmatx)
      dmaStreamRelease(i2sp->dmatx);

#if STM32_I2S_USE_SPI2
    if (&I2SD2 == i2sp)
      rccDisableSPI2(FALSE);
#endif
#if STM32_I2S_USE_SPI3
    if (&I2SD3 == i2sp)
      rccDisableSPI3(FALSE);
#endif
  }
}

/**
 * @brief   Deactivates the SDC peripheral.
 *
 * @param[in] sdcp      pointer to the @p SDCDriver object
 *
 * @notapi
 */
void sdc_lld_stop(SDCDriver *sdcp) {

  if ((sdcp->state == SDC_READY) || (sdcp->state == SDC_ACTIVE)) {
    SDIO->POWER  = 0;
    SDIO->CLKCR  = 0;
    SDIO->DCTRL  = 0;
    SDIO->DTIMER = 0;

    /* Clock deactivation.*/
    nvicDisableVector(SDIO_IRQn);
    dmaStreamRelease(STM32_DMA2_STREAM4);
    rccDisableSDIO(FALSE);
  }
}

/**
 * @brief   Deactivates the ADC peripheral.
 *
 * @param[in] adcp      pointer to the @p ADCDriver object
 *
 * @notapi
 */
void adc_lld_stop(ADCDriver *adcp) {

  /* If in ready state then disables the ADC clock.*/
  if (adcp->state == ADC_READY) {
#if STM32_ADC_USE_ADC1
    if (&ADCD1 == adcp) {
      ADC1->CR1 = 0;
      ADC1->CR2 = 0;
      dmaStreamRelease(adcp->dmastp);
      rccDisableADC1(FALSE);
    }
#endif
  }
}

/**
 * @brief   Deactivates the ADC peripheral.
 *
 * @param[in] adcp      pointer to the @p ADCDriver object
 *
 * @notapi
 */
void adc_lld_stop(ADCDriver *adcp) {

  /* If in ready state then disables the ADC clock and analog part.*/
  if (adcp->state == ADC_READY) {
    dmaStreamRelease(adcp->dmastp);
    adcp->adc->CR1 = 0;
    adcp->adc->CR2 = 0;

#if STM32_ADC_USE_ADC1
    if (&ADCD1 == adcp)
      rccDisableADC1(FALSE);
#endif
  }
}

 */
void sdc_lld_stop(SDCDriver *sdcp) {

  if (sdcp->state != BLK_STOP) {

    /* SDIO deactivation.*/
    SDIO->POWER  = 0;
    SDIO->CLKCR  = 0;
    SDIO->DCTRL  = 0;
    SDIO->DTIMER = 0;

    /* Clock deactivation.*/
    nvicDisableVector(STM32_SDIO_NUMBER);
    dmaStreamRelease(sdcp->dma);
    rccDisableSDIO(FALSE);
  }