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| author | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2012-01-04 23:46:00 +0000 |
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| committer | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2012-01-04 23:46:00 +0000 |
| commit | d7fadacd141270fc041f9cae09eb40fbd8ee7bce (patch) | |
| tree | eae6107c5799c69123732da826c2f156428ed477 /nuttx/configs/stm3210e-eval/README.txt | |
| parent | 76faecb6a81930102a78a1c1157b47bc4c177ed5 (diff) | |
| download | nuttx-d7fadacd141270fc041f9cae09eb40fbd8ee7bce.tar.gz nuttx-d7fadacd141270fc041f9cae09eb40fbd8ee7bce.tar.bz2 nuttx-d7fadacd141270fc041f9cae09eb40fbd8ee7bce.zip | |
Clarify some aspects of ADC configuration for the STM32
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4262 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'nuttx/configs/stm3210e-eval/README.txt')
| -rwxr-xr-x | nuttx/configs/stm3210e-eval/README.txt | 35 |
1 files changed, 9 insertions, 26 deletions
diff --git a/nuttx/configs/stm3210e-eval/README.txt b/nuttx/configs/stm3210e-eval/README.txt index bdd06b0d1..607f4ef35 100755 --- a/nuttx/configs/stm3210e-eval/README.txt +++ b/nuttx/configs/stm3210e-eval/README.txt @@ -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. - - 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 + 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_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: |