forked from Archive/PX4-Autopilot
Clarify some aspects of ADC configuration for the STM32
git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@4262 7fd9a85b-ad96-42d3-883c-3090e2eb8679
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patacongo
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@ -404,34 +404,15 @@ HY-Mini specific Configuration Options
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to generate modulated outputs for such things as motor control. If CONFIG_STM32_TIMn
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is defined (as above) then the following may also be defined to indicate that
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the timer is intended to be used for pulsed output modulation, ADC conversion,
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or DAC conversion.
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or DAC conversion. Note that ADC/DAC require two definition: Not only do you have
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to assign the timer (n) for used by the ADC or DAC, but then you also have to
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configure which ADC or DAC (m) it is assigned to.
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CONFIG_STM32_TIM1_PWM
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CONFIG_STM32_TIM2_PWM
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CONFIG_STM32_TIM3_PWM
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CONFIG_STM32_TIM4_PWM
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CONFIG_STM32_TIM5_PWM
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CONFIG_STM32_TIM6_PWM
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CONFIG_STM32_TIM7_PWM
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CONFIG_STM32_TIM8_PWM
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CONFIG_STM32_TIM1_ADC
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CONFIG_STM32_TIM2_ADC
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CONFIG_STM32_TIM3_ADC
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CONFIG_STM32_TIM4_ADC
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CONFIG_STM32_TIM5_ADC
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CONFIG_STM32_TIM6_ADC
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CONFIG_STM32_TIM7_ADC
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CONFIG_STM32_TIM8_ADC
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CONFIG_STM32_TIM1_DAC
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CONFIG_STM32_TIM2_DAC
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CONFIG_STM32_TIM3_DAC
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CONFIG_STM32_TIM4_DAC
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CONFIG_STM32_TIM5_DAC
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CONFIG_STM32_TIM6_DAC
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CONFIG_STM32_TIM7_DAC
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CONFIG_STM32_TIM8_DAC
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CONFIG_STM32_TIMn_PWM Reserve timer n for use by PWM, n=1,..,8
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CONFIG_STM32_TIMn_ADC Reserve timer n for use by ADC, n=1,..,8
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CONFIG_STM32_TIMn_ADCm Reserve timer n to trigger ADCm, n=1,..,8, m=1,..,3
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CONFIG_STM32_TIMn_DAC Reserve timer n for use by DAC, n=1,..,8
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CONFIG_STM32_TIMn_DACm Reserve timer n to trigger DACm, n=1,..,8, m=1,..,2
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Others alternate pin mappings available:
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@ -485,32 +485,15 @@ STM3210E-EVAL-specific Configuration Options
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to generate modulated outputs for such things as motor control. If CONFIG_STM32_TIMn
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is defined (as above) then the following may also be defined to indicate that
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the timer is intended to be used for pulsed output modulation, ADC conversion,
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or DAC conversion.
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or DAC conversion. Note that ADC/DAC require two definition: Not only do you have
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to assign the timer (n) for used by the ADC or DAC, but then you also have to
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configure which ADC or DAC (m) it is assigned to.
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CONFIG_STM32_TIM1_PWM
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CONFIG_STM32_TIM2_PWM
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CONFIG_STM32_TIM3_PWM
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CONFIG_STM32_TIM4_PWM
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CONFIG_STM32_TIM5_PWM
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CONFIG_STM32_TIM8_PWM
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CONFIG_STM32_TIM1_ADC
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CONFIG_STM32_TIM2_ADC
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CONFIG_STM32_TIM3_ADC
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CONFIG_STM32_TIM4_ADC
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CONFIG_STM32_TIM5_ADC
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CONFIG_STM32_TIM6_ADC
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CONFIG_STM32_TIM7_ADC
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CONFIG_STM32_TIM8_ADC
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CONFIG_STM32_TIM1_DAC
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CONFIG_STM32_TIM2_DAC
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CONFIG_STM32_TIM3_DAC
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CONFIG_STM32_TIM4_DAC
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CONFIG_STM32_TIM5_DAC
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CONFIG_STM32_TIM6_DAC
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CONFIG_STM32_TIM7_DAC
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CONFIG_STM32_TIM8_DAC
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CONFIG_STM32_TIMn_PWM Reserve timer n for use by PWM, n=1,..,8
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CONFIG_STM32_TIMn_ADC Reserve timer n for use by ADC, n=1,..,8
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CONFIG_STM32_TIMn_ADCm Reserve timer n to trigger ADCm, n=1,..,8, m=1,..,3
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CONFIG_STM32_TIMn_DAC Reserve timer n for use by DAC, n=1,..,8
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CONFIG_STM32_TIMn_DACm Reserve timer n to trigger DACm, n=1,..,8, m=1,..,2
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For each timer that is enabled for PWM usage, we need the following additional
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configuration settings:
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@ -418,38 +418,15 @@ STM3240G-EVAL-specific Configuration Options
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to generate modulated outputs for such things as motor control. If CONFIG_STM32_TIMn
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is defined (as above) then the following may also be defined to indicate that
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the timer is intended to be used for pulsed output modulation, ADC conversion,
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or DAC conversion.
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or DAC conversion. Note that ADC/DAC require two definition: Not only do you have
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to assign the timer (n) for used by the ADC or DAC, but then you also have to
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configure which ADC or DAC (m) it is assigned to.
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CONFIG_STM32_TIM1_PWM
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CONFIG_STM32_TIM2_PWM
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CONFIG_STM32_TIM3_PWM
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CONFIG_STM32_TIM4_PWM
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CONFIG_STM32_TIM5_PWM
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CONFIG_STM32_TIM8_PWM
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CONFIG_STM32_TIM9_PWM
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CONFIG_STM32_TIM10_PWM
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CONFIG_STM32_TIM11_PWM
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CONFIG_STM32_TIM12_PWM
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CONFIG_STM32_TIM13_PWM
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CONFIG_STM32_TIM14_PWM
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CONFIG_STM32_TIM1_ADC
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CONFIG_STM32_TIM2_ADC
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CONFIG_STM32_TIM3_ADC
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CONFIG_STM32_TIM4_ADC
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CONFIG_STM32_TIM5_ADC
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CONFIG_STM32_TIM6_ADC
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CONFIG_STM32_TIM7_ADC
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CONFIG_STM32_TIM8_ADC
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CONFIG_STM32_TIM1_DAC
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CONFIG_STM32_TIM2_DAC
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CONFIG_STM32_TIM3_DAC
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CONFIG_STM32_TIM4_DAC
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CONFIG_STM32_TIM5_DAC
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CONFIG_STM32_TIM6_DAC
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CONFIG_STM32_TIM7_DAC
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CONFIG_STM32_TIM8_DAC
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CONFIG_STM32_TIMn_PWM Reserve timer n for use by PWM, n=1,..,14
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CONFIG_STM32_TIMn_ADC Reserve timer n for use by ADC, n=1,..,14
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CONFIG_STM32_TIMn_ADCm Reserve timer n to trigger ADCm, n=1,..,14, m=1,..,3
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CONFIG_STM32_TIMn_DAC Reserve timer n for use by DAC, n=1,..,14
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CONFIG_STM32_TIMn_DACm Reserve timer n to trigger DACm, n=1,..,14, m=1,..,2
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For each timer that is enabled for PWM usage, we need the following additional
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configuration settings:
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@ -604,7 +581,8 @@ Where <subdir> is one of the following:
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CONFIG_ADC=y : Enable the generic ADC infrastructure
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CONFIG_STM32_ADC3=y : Enable ADC3
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CONFIG_STM32_TIM1=y : Enable Timer 1
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CONFIG_STM32_TIM1_ADC3=y : Assign timer 1 to driver ADC3 sampling
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CONFIG_STM32_TIM1_ADC=y : Indicate that timer 1 will be used to trigger an ADC
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CONFIG_STM32_TIM1_ADC3=y : Assign timer 1 to drive ADC3 sampling
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CONFIG_STM32_ADC3_SAMPLE_FREQUENCY=100 : Select a sampling frequency
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See also apps/examples/README.txt
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@ -328,9 +328,22 @@ CONFIG_STM32_ETHMAC_REGDEBUG=n
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#
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# Enable ADC driver support. The STM3240G-EVAL has a 10 Kohm potentiometer
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# RV1 connected to PF9 of STM32F407IGH6 on the board: TIM14_CH1/ SMC_CD/ADC3_IN7
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# In order to use the ADC, you must make the following selections:
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#
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# Above:
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# CONFIG_STM32_ADC3=y : Enable ADC3
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# CONFIG_STM32_TIM1=y : Enable Timer 1
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#
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# Below:
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# CONFIG_ADC=y : Enable the generic ADC infrastructure
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# CONFIG_STM32_TIM1_ADC=y : Indicate that timer 1 will be used to trigger an ADC
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# CONFIG_STM32_TIM1_ADC3=y : Assign timer 1 to drive ADC3 sampling
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# CONFIG_STM32_ADC3_SAMPLE_FREQUENCY=100 : Select a sampling frequency
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#
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CONFIG_ADC=n
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#CONFIG_STM32_TIM1_ADC=y
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CONFIG_STM32_TIM1_ADC3=y
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CONFIG_STM32_ADC3_SAMPLE_FREQUENCY=100
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#
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# PWM configuration
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