C++ (Cpp) DMA_CSR_MAJORLINKCH Exemples

Exemple #1

Fichier : dma.c Projet : Siqiu/Template_For_uCOS-II

/**
 * @brief  使能Major LoopLink 功能
 * @note   当一个通道结束MajorLoopLink后 自动开始另一个通道的传输
 * @param[in]  chl  DMA通道号
 *         			@arg HW_DMA_CH0
 *         			@arg HW_DMA_CH1
 *         			@arg HW_DMA_CH2
 *         			@arg HW_DMA_CH3
 * @param[in]  linkChl 需要连接到通道号
 * \param[in] flag enable or disable
 * 							\arg 0 disable
 *     					\arg 1 enable
 * @retval None
 */
void DMA_EnableMajorLink(uint8_t chl , uint8_t linkChl, bool flag)
{
    if(flag)
    {
        /* enable major loop link */
        DMA0->TCD[chl].CSR |= DMA_CSR_MAJORELINK_MASK;
        /* set chl */
        DMA0->TCD[chl].CSR &= ~DMA_CSR_MAJORLINKCH_MASK;
        DMA0->TCD[chl].CSR |= DMA_CSR_MAJORLINKCH(linkChl);
    }
    else
    {
        DMA0->TCD[chl].CSR &= ~DMA_CSR_MAJORELINK_MASK;
    }
}

Exemple #2

Fichier : fsl_edma.c Projet : Johnnygx/mcuoneclipse

void EDMA_TcdSetChannelLink(edma_tcd_t *tcd, edma_channel_link_type_t type, uint32_t linkedChannel)
{
    assert(tcd != NULL);
    assert(((uint32_t)tcd & 0x1FU) == 0);
    assert(linkedChannel < FSL_FEATURE_EDMA_MODULE_CHANNEL);

    if (type == kEDMA_MinorLink) /* Minor link config */
    {
        uint32_t tmpreg;

        /* Enable minor link */
        tcd->CITER |= DMA_CITER_ELINKYES_ELINK_MASK;
        tcd->BITER |= DMA_BITER_ELINKYES_ELINK_MASK;
        /* Set likned channel */
        tmpreg = tcd->CITER & (~DMA_CITER_ELINKYES_LINKCH_MASK);
        tmpreg |= DMA_CITER_ELINKYES_LINKCH(linkedChannel);
        tcd->CITER = tmpreg;
        tmpreg = tcd->BITER & (~DMA_BITER_ELINKYES_LINKCH_MASK);
        tmpreg |= DMA_BITER_ELINKYES_LINKCH(linkedChannel);
        tcd->BITER = tmpreg;
    }
    else if (type == kEDMA_MajorLink) /* Major link config */
    {
        uint32_t tmpreg;

        /* Enable major link */
        tcd->CSR |= DMA_CSR_MAJORELINK_MASK;
        /* Set major linked channel */
        tmpreg = tcd->CSR & (~DMA_CSR_MAJORLINKCH_MASK);
        tcd->CSR = tmpreg | DMA_CSR_MAJORLINKCH(linkedChannel);
    }
    else /* Link none */
    {
        tcd->CITER &= ~DMA_CITER_ELINKYES_ELINK_MASK;
        tcd->BITER &= ~DMA_BITER_ELINKYES_ELINK_MASK;
        tcd->CSR &= ~DMA_CSR_MAJORELINK_MASK;
    }
}