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SAMA5 ADC: Seems functional in all modes including DMA

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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: Basic driver configuration:
System Type -> SAMA5 Peripheral Support System Type -> SAMA5 Peripheral Support
CONFIG_SAMA5_ADC=y : Enable ADC driver support CONFIG_SAMA5_ADC=y : Enable ADC driver support
CONFIG_SAMA5_TC0=y : Enable the Timer/counter library need for periodic sampling CONFIG_SAMA5_TC0=y : Enable the Timer/counter library need for periodic sampling
Drivers Drivers
CONFIG_ANALOG=y : Should be automatically selected CONFIG_ANALOG=y : Should be automatically selected
CONFIG_ADC=y : Should be automatically selected CONFIG_ADC=y : Should be automatically selected
System Type -> ADC Configuration System Type -> ADC Configuration
CONFIG_SAMA5_ADC_CHAN0=y : These settings enable the sequencer to collect 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_CHAN1=y : Samples from ADC channels 0-3 on each trigger
CONFIG_SAMA5_ADC_CHAN2=y CONFIG_SAMA5_ADC_CHAN2=y
CONFIG_SAMA5_ADC_CHAN3=y CONFIG_SAMA5_ADC_CHAN3=y
CONFIG_SAMA5_ADC_SEQUENCER=y CONFIG_SAMA5_ADC_SEQUENCER=y
CONFIG_SAMA5_ADC_TIOA0TRIG=y : Trigger on the TC0, channel 0 output A 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_TIOAFREQ=2 : At a frequency of 2Hz
CONFIG_SAMA5_ADC_TIOA_RISING=y : Trigger on the rising edge CONFIG_SAMA5_ADC_TIOA_RISING=y : Trigger on the rising edge
Default ADC settings (like gain and offset) may also be set if desired. Default ADC settings (like gain and offset) may also be set if desired.
System Type -> Timer/counter Configuration 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: Work queue supported is also needed:
@ -779,7 +779,7 @@ SAMA5 ADC Support
enabled as follows: enabled as follows:
Application Configuration -> Examples -> ADC eample 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" CONFIG_EXAMPLES_ADC_DEVPATH="/dev/adc0"
Other default settings for the ADC example should be okay. Other default settings for the ADC example should be okay.
@ -790,10 +790,17 @@ SAMA5 ADC Support
following in the configuration. following in the configuration.
System Type -> SAMA5 Peripheral Support System Type -> SAMA5 Peripheral Support
CONFIG_SAMA5_DMAC1=y : Enable DMAC1 support CONFIG_SAMA5_DMAC1=y : Enable DMAC1 support
System Type -> ADC Configuration 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 SAMA5D3x-EK Configuration Options
================================= =================================