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Added explicit ADC channel masks for the standard set of ADC channels, as the single-ended channel MUX masks are not equal to the channel number on some AVR models. Changed demos to use the new channel masks when using the ADC driver.

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This commit is contained in:
Dean Camera
2010-01-25 00:52:45 +00:00
parent 871d9bf1af
commit b68f7f1649
11 changed files with 116 additions and 12 deletions
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2
Demos/Device/ClassDriver/AudioInput/AudioInput.c
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@@ -86,7 +86,7 @@ void SetupHardware(void)
ADC_SetupChannel(MIC_IN_ADC_CHANNEL);
/* Start the ADC conversion in free running mode */
ADC_StartReading(ADC_REFERENCE_AVCC | ADC_RIGHT_ADJUSTED | MIC_IN_ADC_CHANNEL);
ADC_StartReading(ADC_REFERENCE_AVCC | ADC_RIGHT_ADJUSTED | MIC_IN_ADC_MUX_MASK);
}
/** Processes the next audio sample by reading the last ADC conversion and writing it to the audio

3
Demos/Device/ClassDriver/AudioInput/AudioInput.h
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@@ -52,6 +52,9 @@
/* Macros: */
/** ADC channel number for the microphone input. */
#define MIC_IN_ADC_CHANNEL 2
/** ADC channel MUX mask for the microphone input. */
#define MIC_IN_ADC_MUX_MASK ADC_CHANNEL2
/** Maximum ADC sample value for the microphone input. */
#define SAMPLE_MAX_RANGE 0xFFFF