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SAMA5 ADC: Seems functional in all modes including DMA

This commit is contained in:
Gregory Nutt 2013-10-28 10:08:12 -06:00
parent 0e65128556
commit 37e6c99cd6
1 changed files with 20 additions and 13 deletions
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33
configs/sama5d3x-ek/README.txt
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@ -746,28 +746,28 @@ SAMA5 ADC Support
Basic driver configuration:
System Type -> SAMA5 Peripheral Support
CONFIG_SAMA5_ADC=y : Enable ADC driver support
CONFIG_SAMA5_TC0=y : Enable the Timer/counter library need for periodic sampling
CONFIG_SAMA5_ADC=y : Enable ADC driver support
CONFIG_SAMA5_TC0=y : Enable the Timer/counter library need for periodic sampling
Drivers
CONFIG_ANALOG=y : Should be automatically selected
CONFIG_ADC=y : Should be automatically selected
CONFIG_ANALOG=y : Should be automatically selected
CONFIG_ADC=y : Should be automatically selected
System Type -> ADC Configuration
CONFIG_SAMA5_ADC_CHAN0=y : These settings enable the sequencer to collect
CONFIG_SAMA5_ADC_CHAN1=y : Samples from ADC channels 0-3 on each trigger
CONFIG_SAMA5_ADC_CHAN0=y : These settings enable the sequencer to collect
CONFIG_SAMA5_ADC_CHAN1=y : Samples from ADC channels 0-3 on each trigger
CONFIG_SAMA5_ADC_CHAN2=y
CONFIG_SAMA5_ADC_CHAN3=y
CONFIG_SAMA5_ADC_SEQUENCER=y
CONFIG_SAMA5_ADC_TIOA0TRIG=y : Trigger on the TC0, channel 0 output A
CONFIG_SAMA5_ADC_TIOAFREQ=2 : At a frequency of 2Hz
CONFIG_SAMA5_ADC_TIOA_RISING=y : Trigger on the rising edge
CONFIG_SAMA5_ADC_TIOA0TRIG=y : Trigger on the TC0, channel 0 output A
CONFIG_SAMA5_ADC_TIOAFREQ=2 : At a frequency of 2Hz
CONFIG_SAMA5_ADC_TIOA_RISING=y : Trigger on the rising edge
Default ADC settings (like gain and offset) may also be set if desired.
System Type -> Timer/counter Configuration
CONFIG_SAMA5_TC0_TIOA0=y : Should be automatically selected
CONFIG_SAMA5_TC0_TIOA0=y : Should be automatically selected
Work queue supported is also needed:
@ -779,7 +779,7 @@ SAMA5 ADC Support
enabled as follows:
Application Configuration -> Examples -> ADC eample
CONFIG_EXAMPLES_ADC=y : Enables the example code
CONFIG_EXAMPLES_ADC=y : Enables the example code
CONFIG_EXAMPLES_ADC_DEVPATH="/dev/adc0"
Other default settings for the ADC example should be okay.
@ -790,10 +790,17 @@ SAMA5 ADC Support
following in the configuration.
System Type -> SAMA5 Peripheral Support
CONFIG_SAMA5_DMAC1=y : Enable DMAC1 support
CONFIG_SAMA5_DMAC1=y : Enable DMAC1 support
System Type -> ADC Configuration
CONFIG_SAMA5_ADC_DMA=y : Enable ADC DMA transfers
CONFIG_SAMA5_ADC_DMA=y : Enable ADC DMA transfers
CONFIG_SAMA5_ADC_DMASAMPLES=2 : Collect two sets of samples per DMA
Drivers -> Analog device (ADC/DAC) support
CONFIG_ADC_FIFOSIZE=16 : Driver may need a large ring buffer
Application Configuration -> Examples -> ADC eample
CONFIG_EXAMPLES_ADC_GROUPSIZE=16 : Larger buffers in the test
SAMA5D3x-EK Configuration Options
=================================