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For STM32 PWM output on TIM1/8, need to set master output enable (MOE)

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4296 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo 2012-01-11 16:01:18 +00:00
parent 93710a240b
commit 44954116fd
2 changed files with 55 additions and 27 deletions
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70
configs/stm3240g-eval/README.txt
View File

@ -209,17 +209,45 @@ PWM
===
The STM3240G-Eval has no real on-board PWM devices, but the board can be
configured to output a pulse train using TIM4 CH2. This pin is used by
FSMC is but is also connected to the Motor Control Connector (CN5) just
for this purpose:
configured to output a pulse train using timer output pins. The following
pins have been use to generate PWM output (see board.h for some other
candidates):
PD13 FSMC_A18 / MC_TIM4_CH2OUT pin 33 (EnB)
TIM4 CH2. Pin PD13 is used by the FSMC (FSMC_A18) and is also connected
to the Motor Control Connector (CN5) just for this purpose. If FSMC is
not enabled, then FSMC_A18 will not be used (and will be tri-stated from
the LCD).
FSMC must be disabled in this case! PD13 is available at:
CONFIGURATION:
CONFIG_STM32_TIM4=y
CONFIG_PWM=n
CONFIG_PWM_PULSECOUNT=n
CONFIG_STM32_TIM4_PWM=y
CONFIG_STM32_TIM4_CHANNEL=2
Daughterboard Extension Connector, CN3, pin 32 - available
TFT LCD Connector, CN19, pin 17 -- not available without removing the LCD.
Motor Control Connector CN15, pin 33 -- not available unless you bridge SB14.
ACCESS:
Daughterboard Extension Connector, CN3, pin 32
Ground is available on CN3, pin1
NOTE: TIM4 hardware will not support pulse counting.
TIM8 CH4: Pin PC9 is used by the microSD card (MicroSDCard_D1) and I2S
(I2S_CKIN) but can be completely disconnected from both by opening JP16.
CONFIGURATION:
CONFIG_STM32_TIM8=y
CONFIG_PWM=n
CONFIG_PWM_PULSECOUNT=y
CONFIG_STM32_TIM8_PWM=y
CONFIG_STM32_TIM8_CHANNEL=4
ACCESS:
Daughterboard Extension Connector, CN3, pin 17
Ground is available on CN3, pin1
CAN
===
@ -592,27 +620,27 @@ Where <subdir> is one of the following:
CONFIG_DEBUG_ANALOG
3. This example supports the PWM test (apps/examples/pwm) but this must
be manually enabled by selecting:
be manually enabled by selecting eeither
CONFIG_PWM=y : Enable the generic PWM infrastructure
CONFIG_PWM_PULSECOUNT=n : Disable to support for TIM1/8 pulse counts
CONFIG_STM32_TIM4=y : Enable TIM4
CONFIG_STM32_TIM4_PWM=y : Use TIM4 to generate PWM output
CONFIG_STM32_TIM4_CHANNEL=2
CONFIG_PWM=y : Enable the generic PWM infrastructure
CONFIG_PWM_PULSECOUNT=n : Disable to support for TIM1/8 pulse counts
CONFIG_STM32_TIM4=y : Enable TIM4
CONFIG_STM32_TIM4_PWM=y : Use TIM4 to generate PWM output
CONFIG_STM32_TIM4_CHANNEL=2 : Select output on TIM4, channel 2
If CONFIG_STM32_FSMC is disabled, output will appear on CN3, pin 32.
Ground is available on CN3, pin1.
Or..
CONFIG_PWM=y : Enable the generic PWM infrastructure
CONFIG_PWM_PULSECOUNT=y : Enable to support for TIM1/8 pulse counts
CONFIG_STM32_TIM1=y : Enable TIM1
CONFIG_STM32_TIM1_PWM=y : Use TIM1 to generate PWM output
CONFIG_STM32_TIM1_CHANNEL=1
CONFIG_PWM=y : Enable the generic PWM infrastructure
CONFIG_PWM_PULSECOUNT=y : Enable to support for TIM1/8 pulse counts
CONFIG_STM32_TIM8=y : Enable TIM8
CONFIG_STM32_TIM8_PWM=y : Use TIM8 to generate PWM output
CONFIG_STM32_TIM8_CHANNEL=4 : Select output on TIM8, channel 4
If CONFIG_STM32_FSMC is disabled, output will appear on CN2, pin 24
Ground is available on CN2, pin1.
If CONFIG_STM32_FSMC is disabled, output will appear on CN3, pin 17
Ground is available on CN23 pin1.
See also include/board.h and apps/examples/README.txt

12
configs/stm3240g-eval/nsh/defconfig
View File

@ -349,13 +349,13 @@ CONFIG_STM32_ADC3_SAMPLE_FREQUENCY=100
# PWM configuration
#
# The STM3240G-Eval has no real on-board PWM devices, but the board can be configured to output
# a pulse train using several options (see board.h). Here the default setup is for TIM4, CH2.
# Don't forget to enable CONFIG_STM32_TIM4
# a pulse train using several options (see board.h). Here the default setup is for TIM8, CH4.
# Don't forget to enable CONFIG_STM32_TIM8.
#
CONFIG_PWM=n
CONFIG_PWM_PULSECOUNT=n
CONFIG_STM32_TIM4_PWM=y
CONFIG_STM32_TIM4_CHANNEL=2
CONFIG_PWM=y
CONFIG_PWM_PULSECOUNT=y
CONFIG_STM32_TIM8_PWM=y
CONFIG_STM32_TIM8_CHANNEL=4
#
# General build options