qei.c

Go to the documentation of this file.

/**************************************************************************/
#include "NuMicro.h"


void QEI_Close(QEI_T* qei)
{
    /* Reset QEI configuration */
    qei->CTL = (uint32_t)0;
}

void QEI_DisableInt(QEI_T* qei, uint32_t u32IntSel)
{
    /* Disable QEI specified interrupt */
    QEI_DISABLE_INT(qei, u32IntSel);

    /* Disable NVIC QEI IRQ */
    if(qei ==(QEI_T*)QEI0)
    {
        NVIC_DisableIRQ((IRQn_Type)QEI0_IRQn);
    }
    else
    {
        NVIC_DisableIRQ((IRQn_Type)QEI1_IRQn);
    }
}

void QEI_EnableInt(QEI_T* qei, uint32_t u32IntSel)
{
    /* Enable QEI specified interrupt */
    QEI_ENABLE_INT(qei, u32IntSel);

    /* Enable NVIC QEI IRQ */
    if(qei == (QEI_T*)QEI0)
    {
        NVIC_EnableIRQ(QEI0_IRQn);
    }
    else
    {
        NVIC_EnableIRQ(QEI1_IRQn);
    }
}

void QEI_Open(QEI_T* qei, uint32_t u32Mode, uint32_t u32Value)
{
    /* Set QEI function configuration */
    /* Set QEI counting mode */
    /* Enable IDX, QEA and QEB input to QEI controller */
    qei->CTL = (qei->CTL & (~QEI_CTL_MODE_Msk)) | ((u32Mode) | QEI_CTL_CHAEN_Msk | QEI_CTL_CHBEN_Msk | QEI_CTL_IDXEN_Msk);

    /* Set QEI maximum count value in in compare-counting mode */
    qei->CNTMAX = u32Value;
}

void QEI_Start(QEI_T* qei)
{
    /* Enable QEI controller function */
    qei->CTL |= QEI_CTL_QEIEN_Msk;
}

void QEI_Stop(QEI_T* qei)
{
    /* Disable QEI controller function */
    qei->CTL &= (~QEI_CTL_QEIEN_Msk);
}

 /* end of group QEI_EXPORTED_FUNCTIONS */
 /* end of group QEI_Driver */
 /* end of group Standard_Driver */

/*** (C) COPYRIGHT 2016 Nuvoton Technology Corp. ***/