Example #1
0
void PDB_QuickInit(PDB_TriggerSrc_Type triggerSrc, uint32_t timeInUs)
{
    uint32_t clock;
    PDB_InitTypeDef  PDB_InitStruct1;
    
    CLOCK_GetClockFrequency(kBusClock, &clock);

    PDB_InitStruct1.inputTrigSource = kPDB_SoftwareTrigger;  /* software Trigger */
    PDB_InitStruct1.isContinuesMode = true;
    PDB_InitStruct1.srcClock = clock;
    PDB_InitStruct1.timeInUs = timeInUs;
    PDB_Init(&PDB_InitStruct1);
}
/*!
 * @brief Main function
 */
int main(void)
{
    pdb_config_t pdbConfigStruct;
    pdb_adc_pretrigger_config_t pdbAdcPreTriggerConfigStruct;

    BOARD_InitPins();
    BOARD_BootClockRUN();
    BOARD_InitDebugConsole();
    EnableIRQ(DEMO_PDB_IRQ_ID);
    EnableIRQ(DEMO_ADC_IRQ_ID);

    PRINTF("\r\nPDB ADC16 Pre-Trigger Example.\r\n");

    /* Configure the PDB counter. */
    /*
     * pdbConfigStruct.loadValueMode = kPDB_LoadValueImmediately;
     * pdbConfigStruct.prescalerDivider = kPDB_PrescalerDivider1;
     * pdbConfigStruct.dividerMultiplicationFactor = kPDB_DividerMultiplicationFactor1;
     * pdbConfigStruct.triggerInputSource = kPDB_TriggerSoftware;
     * pdbConfigStruct.enableContinuousMode = false;
     */
    PDB_GetDefaultConfig(&pdbConfigStruct);
    PDB_Init(DEMO_PDB_BASE, &pdbConfigStruct);

    /* Configure the delay interrupt. */
    PDB_SetModulusValue(DEMO_PDB_BASE, 1000U);

    /* The available delay value is less than or equal to the modulus value. */
    PDB_SetCounterDelayValue(DEMO_PDB_BASE, 1000U);
    PDB_EnableInterrupts(DEMO_PDB_BASE, kPDB_DelayInterruptEnable);

    /* Configure the ADC Pre-Trigger. */
    pdbAdcPreTriggerConfigStruct.enablePreTriggerMask = 1U << DEMO_PDB_ADC_PRETRIGGER_CHANNEL;
    pdbAdcPreTriggerConfigStruct.enableOutputMask = 1U << DEMO_PDB_ADC_PRETRIGGER_CHANNEL;
    pdbAdcPreTriggerConfigStruct.enableBackToBackOperationMask = 0U;
    PDB_SetADCPreTriggerConfig(DEMO_PDB_BASE, DEMO_PDB_ADC_TRIGGER_CHANNEL, &pdbAdcPreTriggerConfigStruct);
    PDB_SetADCPreTriggerDelayValue(DEMO_PDB_BASE, DEMO_PDB_ADC_TRIGGER_CHANNEL, DEMO_PDB_ADC_PRETRIGGER_CHANNEL, 200U);
    /* The available Pre-Trigger delay value is less than or equal to the modulus value. */

    PDB_DoLoadValues(DEMO_PDB_BASE);

    /* Configure the ADC. */
    DEMO_InitPDB_ADC();

    g_PdbDelayInterruptCounter = 0U;
    g_AdcInterruptCounter = 0U;

    while (1)
    {
        PRINTF("\r\nType any key into terminal to trigger the PDB and then trigger the ADC's conversion ...\r\n");
        GETCHAR();

        g_PdbDelayInterruptFlag = false;
        g_AdcInterruptFlag = false;
        PDB_DoSoftwareTrigger(DEMO_PDB_BASE);
        while ((!g_PdbDelayInterruptFlag) || (!g_AdcInterruptFlag))
        {
        }
        PRINTF("\r\n");
        PRINTF("PDB Interrupt Counter: %d\r\n", g_PdbDelayInterruptCounter);
        PRINTF("ADC Conversion Interrupt Counter: %d\r\n", g_AdcInterruptCounter);
        PRINTF("ADC Conversion Value: %d\r\n", g_AdcConvValue);
    }
}