e12e219b4e
* Global variables shared between an interrupt and the main code should be volatile See: https://www.embedded.com/electronics-blogs/beginner-s-corner/4023801/Introduction-to-the-Volatile-Keyword * There is no reason to change the active report if it has not changed * Declare local functions and variables static This both helps the compiler and the programmer
50 lines
2.0 KiB
C
50 lines
2.0 KiB
C
#include "fsl_adc16.h"
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#include "fsl_port.h"
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#include "peripherals/adc.h"
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static adc16_channel_config_t adc16ChannelConfigStruct;
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void ADC_Init(void)
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{
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adc16_config_t adc16ConfigStruct;
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CLOCK_EnableClock(ADC_CLOCK);
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PORT_SetPinMux(ADC_PORT, ADC_PIN, kPORT_PinDisabledOrAnalog);
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/*
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* adc16ConfigStruct.referenceVoltageSource = kADC16_ReferenceVoltageSourceVref;
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* adc16ConfigStruct.clockSource = kADC16_ClockSourceAsynchronousClock;
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* adc16ConfigStruct.enableAsynchronousClock = true;
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* adc16ConfigStruct.clockDivider = kADC16_ClockDivider8;
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* adc16ConfigStruct.resolution = kADC16_ResolutionSE12Bit;
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* adc16ConfigStruct.longSampleMode = kADC16_LongSampleDisabled;
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* adc16ConfigStruct.enableHighSpeed = false;
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* adc16ConfigStruct.enableLowPower = false;
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* adc16ConfigStruct.enableContinuousConversion = false;
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*/
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ADC16_GetDefaultConfig(&adc16ConfigStruct);
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ADC16_Init(ADC_BASE, &adc16ConfigStruct);
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ADC16_EnableHardwareTrigger(ADC_BASE, false); /* Make sure the software trigger is used. */
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if (kStatus_Success != ADC16_DoAutoCalibration(ADC_BASE))
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{
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// Handle error
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}
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adc16ChannelConfigStruct.channelNumber = ADC_USER_CHANNEL;
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adc16ChannelConfigStruct.enableInterruptOnConversionCompleted = false;
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adc16ChannelConfigStruct.enableDifferentialConversion = false;
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}
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uint32_t ADC_Measure(void)
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{
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/*
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When in software trigger mode, each conversion would be launched once calling the "ADC16_ChannelConfigure()"
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function, which works like writing a conversion command and executing it. For another channel's conversion,
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just to change the "channelNumber" field in channel's configuration structure, and call the
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"ADC16_ChannelConfigure() again.
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*/
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ADC16_SetChannelConfig(ADC_BASE, ADC_CHANNEL_GROUP, &adc16ChannelConfigStruct);
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while (0U == (kADC16_ChannelConversionDoneFlag & ADC16_GetChannelStatusFlags(ADC_BASE, ADC_CHANNEL_GROUP))) {}
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return ADC16_GetChannelConversionValue(ADC_BASE, ADC_CHANNEL_GROUP);
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}
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