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Clarify some aspects of ADC configuration for the STM32

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4262 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo 2012-01-04 23:46:00 +00:00
parent 24c61d7f2d
commit 23a3df2885
4 changed files with 39 additions and 84 deletions
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35
configs/hymini-stm32v/README.txt
View File

@ -404,34 +404,15 @@ HY-Mini specific Configuration Options
to generate modulated outputs for such things as motor control. If CONFIG_STM32_TIMn
is defined (as above) then the following may also be defined to indicate that
the timer is intended to be used for pulsed output modulation, ADC conversion,
or DAC conversion.
or DAC conversion. Note that ADC/DAC require two definition: Not only do you have
to assign the timer (n) for used by the ADC or DAC, but then you also have to
configure which ADC or DAC (m) it is assigned to.
CONFIG_STM32_TIM1_PWM
CONFIG_STM32_TIM2_PWM
CONFIG_STM32_TIM3_PWM
CONFIG_STM32_TIM4_PWM
CONFIG_STM32_TIM5_PWM
CONFIG_STM32_TIM6_PWM
CONFIG_STM32_TIM7_PWM
CONFIG_STM32_TIM8_PWM
CONFIG_STM32_TIM1_ADC
CONFIG_STM32_TIM2_ADC
CONFIG_STM32_TIM3_ADC
CONFIG_STM32_TIM4_ADC
CONFIG_STM32_TIM5_ADC
CONFIG_STM32_TIM6_ADC
CONFIG_STM32_TIM7_ADC
CONFIG_STM32_TIM8_ADC
CONFIG_STM32_TIM1_DAC
CONFIG_STM32_TIM2_DAC
CONFIG_STM32_TIM3_DAC
CONFIG_STM32_TIM4_DAC
CONFIG_STM32_TIM5_DAC
CONFIG_STM32_TIM6_DAC
CONFIG_STM32_TIM7_DAC
CONFIG_STM32_TIM8_DAC
CONFIG_STM32_TIMn_PWM Reserve timer n for use by PWM, n=1,..,8
CONFIG_STM32_TIMn_ADC Reserve timer n for use by ADC, n=1,..,8
CONFIG_STM32_TIMn_ADCm Reserve timer n to trigger ADCm, n=1,..,8, m=1,..,3
CONFIG_STM32_TIMn_DAC Reserve timer n for use by DAC, n=1,..,8
CONFIG_STM32_TIMn_DACm Reserve timer n to trigger DACm, n=1,..,8, m=1,..,2
Others alternate pin mappings available:

33
configs/stm3210e-eval/README.txt
View File

@ -485,32 +485,15 @@ STM3210E-EVAL-specific Configuration Options
to generate modulated outputs for such things as motor control. If CONFIG_STM32_TIMn
is defined (as above) then the following may also be defined to indicate that
the timer is intended to be used for pulsed output modulation, ADC conversion,
or DAC conversion.
or DAC conversion. Note that ADC/DAC require two definition: Not only do you have
to assign the timer (n) for used by the ADC or DAC, but then you also have to
configure which ADC or DAC (m) it is assigned to.
CONFIG_STM32_TIM1_PWM
CONFIG_STM32_TIM2_PWM
CONFIG_STM32_TIM3_PWM
CONFIG_STM32_TIM4_PWM
CONFIG_STM32_TIM5_PWM
CONFIG_STM32_TIM8_PWM
CONFIG_STM32_TIM1_ADC
CONFIG_STM32_TIM2_ADC
CONFIG_STM32_TIM3_ADC
CONFIG_STM32_TIM4_ADC
CONFIG_STM32_TIM5_ADC
CONFIG_STM32_TIM6_ADC
CONFIG_STM32_TIM7_ADC
CONFIG_STM32_TIM8_ADC
CONFIG_STM32_TIM1_DAC
CONFIG_STM32_TIM2_DAC
CONFIG_STM32_TIM3_DAC
CONFIG_STM32_TIM4_DAC
CONFIG_STM32_TIM5_DAC
CONFIG_STM32_TIM6_DAC
CONFIG_STM32_TIM7_DAC
CONFIG_STM32_TIM8_DAC
CONFIG_STM32_TIMn_PWM Reserve timer n for use by PWM, n=1,..,8
CONFIG_STM32_TIMn_ADC Reserve timer n for use by ADC, n=1,..,8
CONFIG_STM32_TIMn_ADCm Reserve timer n to trigger ADCm, n=1,..,8, m=1,..,3
CONFIG_STM32_TIMn_DAC Reserve timer n for use by DAC, n=1,..,8
CONFIG_STM32_TIMn_DACm Reserve timer n to trigger DACm, n=1,..,8, m=1,..,2
For each timer that is enabled for PWM usage, we need the following additional
configuration settings:

42
configs/stm3240g-eval/README.txt
View File

@ -418,38 +418,15 @@ STM3240G-EVAL-specific Configuration Options
to generate modulated outputs for such things as motor control. If CONFIG_STM32_TIMn
is defined (as above) then the following may also be defined to indicate that
the timer is intended to be used for pulsed output modulation, ADC conversion,
or DAC conversion.
or DAC conversion. Note that ADC/DAC require two definition: Not only do you have
to assign the timer (n) for used by the ADC or DAC, but then you also have to
configure which ADC or DAC (m) it is assigned to.
CONFIG_STM32_TIM1_PWM
CONFIG_STM32_TIM2_PWM
CONFIG_STM32_TIM3_PWM
CONFIG_STM32_TIM4_PWM
CONFIG_STM32_TIM5_PWM
CONFIG_STM32_TIM8_PWM
CONFIG_STM32_TIM9_PWM
CONFIG_STM32_TIM10_PWM
CONFIG_STM32_TIM11_PWM
CONFIG_STM32_TIM12_PWM
CONFIG_STM32_TIM13_PWM
CONFIG_STM32_TIM14_PWM
CONFIG_STM32_TIM1_ADC
CONFIG_STM32_TIM2_ADC
CONFIG_STM32_TIM3_ADC
CONFIG_STM32_TIM4_ADC
CONFIG_STM32_TIM5_ADC
CONFIG_STM32_TIM6_ADC
CONFIG_STM32_TIM7_ADC
CONFIG_STM32_TIM8_ADC
CONFIG_STM32_TIM1_DAC
CONFIG_STM32_TIM2_DAC
CONFIG_STM32_TIM3_DAC
CONFIG_STM32_TIM4_DAC
CONFIG_STM32_TIM5_DAC
CONFIG_STM32_TIM6_DAC
CONFIG_STM32_TIM7_DAC
CONFIG_STM32_TIM8_DAC
CONFIG_STM32_TIMn_PWM Reserve timer n for use by PWM, n=1,..,14
CONFIG_STM32_TIMn_ADC Reserve timer n for use by ADC, n=1,..,14
CONFIG_STM32_TIMn_ADCm Reserve timer n to trigger ADCm, n=1,..,14, m=1,..,3
CONFIG_STM32_TIMn_DAC Reserve timer n for use by DAC, n=1,..,14
CONFIG_STM32_TIMn_DACm Reserve timer n to trigger DACm, n=1,..,14, m=1,..,2
For each timer that is enabled for PWM usage, we need the following additional
configuration settings:
@ -604,7 +581,8 @@ Where <subdir> is one of the following:
CONFIG_ADC=y : Enable the generic ADC infrastructure
CONFIG_STM32_ADC3=y : Enable ADC3
CONFIG_STM32_TIM1=y : Enable Timer 1
CONFIG_STM32_TIM1_ADC3=y : Assign timer 1 to driver ADC3 sampling
CONFIG_STM32_TIM1_ADC=y : Indicate that timer 1 will be used to trigger an ADC
CONFIG_STM32_TIM1_ADC3=y : Assign timer 1 to drive ADC3 sampling
CONFIG_STM32_ADC3_SAMPLE_FREQUENCY=100 : Select a sampling frequency
See also apps/examples/README.txt

13
configs/stm3240g-eval/nsh/defconfig
View File

@ -328,9 +328,22 @@ CONFIG_STM32_ETHMAC_REGDEBUG=n
#
# Enable ADC driver support. The STM3240G-EVAL has a 10 Kohm potentiometer
# RV1 connected to PF9 of STM32F407IGH6 on the board: TIM14_CH1/ SMC_CD/ADC3_IN7
# In order to use the ADC, you must make the following selections:
#
# Above:
# CONFIG_STM32_ADC3=y : Enable ADC3
# CONFIG_STM32_TIM1=y : Enable Timer 1
#
# Below:
# CONFIG_ADC=y : Enable the generic ADC infrastructure
# CONFIG_STM32_TIM1_ADC=y : Indicate that timer 1 will be used to trigger an ADC
# CONFIG_STM32_TIM1_ADC3=y : Assign timer 1 to drive ADC3 sampling
# CONFIG_STM32_ADC3_SAMPLE_FREQUENCY=100 : Select a sampling frequency
#
CONFIG_ADC=n
#CONFIG_STM32_TIM1_ADC=y
CONFIG_STM32_TIM1_ADC3=y
CONFIG_STM32_ADC3_SAMPLE_FREQUENCY=100
#
# PWM configuration