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FVR not handled bij ADC library #192

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GoogleCodeExporter opened this issue Mar 3, 2016 · 1 comment

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auto-migrated Component-Peripheral Priority-Medium Type-Enhancement Usability

GoogleCodeExporter commented Mar 3, 2016

The ADC library allows to specify ADC_NVREF = ADC_VREF_FVR,
but this choice is not handled (by procedure _adc_vref_vcfg()
in the adc_channels library).

When configuring ADCON1_PVCFG and _NVCFG bits for 'FVR' in the application 
program after the call of adc_init() the ADC works as expected (tested with a 
18f25k22).

Original issue reported on code.google.com by robhamerling on 16 Apr 2013 at 2:59

The text was updated successfully, but these errors were encountered:

Author

GoogleCodeExporter commented Mar 3, 2016

Almost all 14H PICs have an FVR module, controlled by FVRCON register. Many 
18F's have it as well, but controlled by VREFCON0 register.  I 'grep'ed the 
device files for these and the result is attached (2 files).
FVR is a nice feature for 'absolute' measurements without the need for an 
external voltage reference needing a pin and PCB space. So support for it is 
highly desirable.

Original comment by robhamerling on 16 Apr 2013 at 8:00

Changed state: Started
Added labels: Type-Enhancement
Removed labels: Type-Defect

Attachments:

GoogleCodeExporter added Priority-Medium Usability auto-migrated Component-Peripheral Type-Enhancement labels

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