[参考译文] TMS320F28379S：使用 ePWM XLink 的示例

尊敬的 Kien：

是、已删除 TIDA-00961参考设计。

我们没有任何现成的示例来展示 EPWMXLINK 功能的用例、但有一个 driverlib 函数、您可以直接在 EPWM 初始化中使用、实施起来没有困难。 请在 epwm.h 文件的以下代码片段中找到：

//*****************************************************************************
//
//! Sets the EPWM links.
//!
//! \param base is the base address of the EPWM module.
//! \param epwmLink is the ePWM instance to link with.
//! \param linkComp is the ePWM component to link.
//!
//! This function links the component defined in linkComp in the current ePWM
//! instance with the linkComp component of the ePWM instance defined by
//! epwmLink. A change (a write) in the value of linkComp component of epwmLink
//! instance, causes a change in the current ePWM linkComp component.
//! For example if the current ePWM is ePWM3 and the values of epwmLink and
//! linkComp are EPWM_LINK_WITH_EPWM_1 and EPWM_LINK_COMP_C respectively,
//! then a write to COMPC register in ePWM1, will result in a simultaneous
//! write to COMPC register in ePWM3.
//! Valid values for epwmLink are:
//!   - EPWM_LINK_WITH_EPWM_1  - link current ePWM with ePWM1
//!   - EPWM_LINK_WITH_EPWM_2  - link current ePWM with ePWM2
//!   - EPWM_LINK_WITH_EPWM_3  - link current ePWM with ePWM3
//!   - EPWM_LINK_WITH_EPWM_4  - link current ePWM with ePWM4
//!   - EPWM_LINK_WITH_EPWM_5  - link current ePWM with ePWM5
//!   - EPWM_LINK_WITH_EPWM_6  - link current ePWM with ePWM6
//!   - EPWM_LINK_WITH_EPWM_7  - link current ePWM with ePWM7
//!   - EPWM_LINK_WITH_EPWM_8  - link current ePWM with ePWM8
//!   - EPWM_LINK_WITH_EPWM_9  - link current ePWM with ePWM9
//!   - EPWM_LINK_WITH_EPWM_10  - link current ePWM with ePWM10
//!   - EPWM_LINK_WITH_EPWM_11  - link current ePWM with ePWM11
//!   - EPWM_LINK_WITH_EPWM_12  - link current ePWM with ePWM12
//!
//! Valid values for linkComp are:
//!   - EPWM_LINK_TBPRD   - link TBPRD:TBPRDHR registers
//!   - EPWM_LINK_COMP_A   - link COMPA registers
//!   - EPWM_LINK_COMP_B   - link COMPB registers
//!   - EPWM_LINK_COMP_C   - link COMPC registers
//!   - EPWM_LINK_COMP_D   - link COMPD registers
//!   - EPWM_LINK_GLDCTL2  - link GLDCTL2 registers
//!
//! \return None.
//
//*****************************************************************************
static inline void
EPWM_setupEPWMLinks(uint32_t base, EPWM_CurrentLink epwmLink,
                    EPWM_LinkComponent linkComp)
{
    //
    // Check the arguments
    //
    ASSERT(EPWM_isBaseValid(base));

    uint32_t registerOffset;
    registerOffset = base + EPWM_O_XLINK;

    //
    // Configure EPWM links
    //
    HWREG(registerOffset) =
        ((HWREG(registerOffset) & ~((uint32_t)EPWM_XLINK_TBPRDLINK_M << (uint32_t)linkComp)) |
        ((uint32_t)epwmLink << (uint32_t)linkComp));
}

此致、

艾里森