7 应用代码

volatile bool gCheckADC;
/* Filtered Result */
uint32_t gResult = 0;
/* ADC Value Output */
uint32_t gADCResult = 0;

/* Scaling Factor, Q8 value (0-255) */
uint32_t gBeta = 16;
const DL_MathACL_operationConfig gMpyConfig = {
    .opType      = DL_MATHACL_OP_TYPE_MAC,
    .opSign      = DL_MATHACL_OPSIGN_SIGNED,
    .iterations  = 0,
    .scaleFactor = 0,
    .qType       = DL_MATHACL_Q_TYPE_Q8};
int main(void)
 {
    SYSCFG_DL_init();
    NVIC_EnableIRQ(ADC12_0_INST_INT_IRQN);
    gCheckADC = false;
    DL_ADC12_startConversion(ADC12_0_INST);

    /* Configure MathACL for Multiply and Accumulate */
    DL_MathACL_configOperation(MATHACL, &gMpyConfig, 0, 0 );
    DL_MathACL_enableSaturation(MATHACL);

    while (1) {
        while (false == gCheckADC) {
            __WFE();
        }
        gCheckADC = false;

        /* Calculate IIR Filter Output */
        gADCResult = DL_ADC12_getMemResult(ADC12_0_INST, DL_ADC12_MEM_IDX_0);
        /* Set Operand One last */
        DL_MathACL_setOperandTwo(MATHACL, gADCResult - gResult);
        DL_MathACL_setOperandOne(MATHACL, gBeta);
        DL_MathACL_waitForOperation(MATHACL);
        gResult = DL_MathACL_getResultOne(MATHACL);
        DL_DAC12_output12(DAC0, gResult);

    }
}
/* Set the ADC Result flag to trigger our main loop to process the new data */
void ADC12_0_INST_IRQHandler(void)
{
    switch (DL_ADC12_getPendingInterrupt(ADC12_0_INST)) {
        case DL_ADC12_IIDX_MEM0_RESULT_LOADED:
            gCheckADC = true;
            break;
        default:
            break;
    }
}