mcal ADC硬件触发和软件触发混用DEMO

Ekko

xianghan etmr触发

Ekko

SSEZKX 这样时间会不会太久，客户的意思就是现在的延时时间太久，影响正常功能

SSEZKX

不会，这样操作时间很短，可以参考这个电机demo代码
71654c09-93fd-404e-86b1-9d8316a0c3f8.zip

SSEZKX

不需要额外增加延时，只需要等待ADC自身采集和转换以及代码执行的时间

Ekko

SSEZKX 好的我让客户试一下

SSEZKX

可以参考OneShunt Demo中这两个API

HW_SetupAdcSeqMode
Motor_AdcFOCISR

Ekko

SSEZKX 如果我Disable ADC HW触发信号输出然后判断确定ADC寄存器STS_ADRDY位置一后，再Enable ADC HW触发信号输出，这个步骤可以吗，省去Init和DeInit操作

SSEZKX

我这里弄错了，ADC重新初始化才需要Disable，不进行重新初始化不需要Disable ADC HW触发信号输出，只需要在采样完成进入中断后按用户需求重新配置ADC就行，配置完后执行以下流程重装载回调函数和开启ADC，等待标志位

    base->INTE = ADC_INTE_EOSEQIE(1U);                                   /* Enable end of sequence interrupt */
    INT_SYS_InstallHandler(ADC0_IRQn, adcISR, NULL);
    INT_SYS_EnableIRQ(ADC0_IRQn);
    base->CTRL = ADC_CTRL_TSEN(1U) |                                     /* Enable temperature sensor */
                 ADC_CTRL_ADEN(1U);                                      /* Enable ADC */
    base->CTRL |= ADC_CTRL_ADSTART(1U);                                  /* Start ADC */
    while(!(base->STS & ADC_STS_ADRDY_MASK));                           /* Wait for ADC ready */

Ekko

SSEZKX 可能我描述也有点不清楚，客户需要在ADC HW触发中穿插一次SW触发，所以肯定先得Disable ADC HW 触发，再打开SW 触发，所以这样的话，是不是直接再判断STS_ADRDY位就行了呢

SSEZKX

不是的，我们的单电阻电机demo就是这样操作的，ADCHW触发，step采样完成后，切换成ADCSW触发，continue采样，完成后切换回ADCHW触发，是这个意思吧，ME0是这样做的，别的芯片也一样，寄存器操作有细微区别

void HW_SetupAdcSeq1Mode(const uint8_t *channels, uint8_t channel_cnt, const isr_t adcISR)
{    
    ADC_Type *base = ADC0;

    /* Setup adc configuration */
    base->CFG0 = ((channel_cnt - 1) & 0xFU) << ADC_CFG0_SEQLEN_SHIFT |   /* Sequence length */
                 ADC_CFG0_DISCEN(1U) |                                                                    
                 ADC_CFG0_CONT(0U) |
                 ADC_CFG0_TRIGMD(1U);                                  

    base->CFG1 = ADC_CFG1_STCNT(32U) | ADC_CFG1_PRS(0);                   /* Start time count */
    base->SMP = ADC_SMP_SMP(1U);                                         /* Sample time */

        /* Configure sequence 0 channels for current sensing */
    ADC0->CHSEL[0] = ADC_CHSEL_CHSEL(ADC_V_PHASE_CHANNEL);
    ADC0->CHSEL[1] = ADC_CHSEL_CHSEL(ADC_V_PHASE_CHANNEL);

    base->INTE = ADC_INTE_EOSEQIE(1U);                                     /* Enable end of sequence interrupt */
    INT_SYS_InstallHandler(ADC0_IRQn, adcISR, NULL);
    INT_SYS_EnableIRQ(ADC0_IRQn);
    base->CTRL = ADC_CTRL_ADEN(1U);                                      /* Enable ADC */
    base->CTRL |= ADC_CTRL_ADSTART(1U);                                  /* Start ADC */
    while(!(base->STS & ADC_STS_ADRDY_MASK));                            /* Wait for ADC ready */
}

void HW_SetupAdcSeq2Mode(const uint8_t *channels, uint8_t channel_cnt, const isr_t adcISR)
{    
    ADC_Type *base = ADC0;

    /* Setup adc configuration */
    base->CFG0 = ((channel_cnt - 1) & 0xFU) << ADC_CFG0_SEQLEN_SHIFT |   /* Sequence length */
                 ADC_CFG0_CONT(0U) |
                 ADC_CFG0_DISCEN(0U) |
                 ADC_CFG0_TRIGMD(0U);                                    

    base->CFG1 = ADC_CFG1_STCNT(32U) | ADC_CFG1_PRS(0);                 /* Start time count */
    base->SMP = ADC_SMP_SMP(16U);                                         /* Sample time */
    for (int i = 0; i < channel_cnt; i++)
    {
        base->CHSEL[i] = ADC_CHSEL_CHSEL(channels[i]);                   /* Setup channel */
    }
    base->INTE = ADC_INTE_EOSEQIE(1U);                                   /* Enable end of sequence interrupt */
    INT_SYS_InstallHandler(ADC0_IRQn, adcISR, NULL);
    INT_SYS_EnableIRQ(ADC0_IRQn);
    base->CTRL = ADC_CTRL_TSEN(1U) |                                     /* Enable temperature sensor */
                 ADC_CTRL_ADEN(1U);                                      /* Enable ADC */
    base->CTRL |= ADC_CTRL_ADSTART(1U);                                  /* Start ADC */
    while(!(base->STS & ADC_STS_ADRDY_MASK));                           /* Wait for ADC ready */
}


uint8_t ADCTrgCnt = 0U;
void Motor_AdcFOCISR(void)
{
    // GPIOE->PSOR = 1 << 10;
    /* Clear the interrupt flag */
    MC_ADC->STS = ADC_STS_EOSEQ_MASK;
    if(ADCTrgCnt  == 0U)
    {
        CIM->SWTRIG = CIM_SWTRIG_SWT(1U) | CIM_SWTRIG_SWTCNT(0U);

        /* User code */

        ADCTrgCnt = 1;

        HW_SetupAdcSeq2Mode(motorAdcFocUserSample2, 2, Motor_AdcFOCISR);
    }
    else
    {
        /* User code */

        HW_SetupAdcSeq1Mode(motorAdcFocUserSample1, 2, Motor_AdcFOCISR);
        ADCTrgCnt = 0U;
    }
    // GPIOE->PCOR = 1 << 10;
}

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