HW: ShieldBuddy TC275

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Related header

• IfxVadc_cfg.h: VADC on-chip implementation data.
• IfxVadc_PinMap.h: VADC I/O map.
• IfxVadc_Adc.h: VADC ADC details.
• IfxVadc.h: VADC basic functionality.

IfxVadc_Adc.h

VADC comprises of independent analog channels with Analog/Digital converters to convert analog input to discrete digital output.

Examples

Background

#include "IfxCpu.h"

#include "IfxScuWdt.h"

#include "IfxVadc_Adc.h"

#include "Ifx_Types.h"

IfxCpu_syncEvent cpuSyncEvent = 0;

// VADC handle

IfxVadc_Adc vadc;

IfxVadc_Adc_Group adcGroup;

int core0_main(void) {

IfxCpu_enableInterrupts();

/*

* !!WATCHDOG0 AND SAFETY WATCHDOG ARE DISABLED HERE!!

* Enable the watchdog in the demo if it is required and also service the

* watchdog periodically

* */

IfxScuWdt_disableCpuWatchdog(IfxScuWdt_getCpuWatchdogPassword());

IfxScuWdt_disableSafetyWatchdog(IfxScuWdt_getSafetyWatchdogPassword());

/* Cpu sync event wait*/

IfxCpu_emitEvent(&cpuSyncEvent);

IfxCpu_waitEvent(&cpuSyncEvent, 1);

IfxVadc_Adc_Config adcConfig;

IfxVadc_Adc_initModuleConfig(&adcConfig, &MODULE_VADC);

IfxVadc_Adc_initModule(&vadc, &adcConfig);

IfxVadc_Adc_GroupConfig adcGroupConfig;

IfxVadc_Adc_initGroupConfig(&adcGroupConfig, &vadc);

// group 0

adcGroupConfig.groupId = IfxVadc_GroupId_0;

adcGroupConfig.master = adcGroupConfig.groupId;

adcGroupConfig.arbiter.requestSlotBackgroundScanEnabled = TRUE;

adcGroupConfig.backgroundScanRequest.autoBackgroundScanEnabled = TRUE;

adcGroupConfig.backgroundScanRequest.triggerConfig.gatingMode

= IfxVadc_GatingMode_always;

IfxVadc_Adc_initGroup(&adcGroup, &adcGroupConfig);

IfxVadc_Adc_ChannelConfig adcChannelConfig;

IfxVadc_Adc_Channel adcChannel;

IfxVadc_Adc_initChannelConfig(&adcChannelConfig, &adcGroup);

// channel 0

adcChannelConfig.channelId = (IfxVadc_ChannelId)(0);

adcChannelConfig.resultRegister = (IfxVadc_ChannelResult)(0);

adcChannelConfig.backgroundChannel = TRUE;

IfxVadc_Adc_initChannel(&adcChannel, &adcChannelConfig);

// add to background scan

unsigned channels = (1 << adcChannelConfig.channelId);

unsigned mask = channels;

IfxVadc_Adc_setBackgroundScan(&vadc, &adcGroup, channels, mask);

IfxVadc_Adc_startBackgroundScan(&vadc);

while(1) {

// wait for valid result

Ifx_VADC_RES conversionResult;

do {

conversionResult = IfxVadc_Adc_getResult(&adcChannel);

} while(! conversionResult.B.VF);

uint32 actual = conversionResult.B.RESULT;

// print

}

return 1;

}