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Kconfig changes to get a clean STM32 ADC example build

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5246 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo 2012-10-21 15:47:34 +00:00
parent f5a42a8068
commit 0ea70c2f65
2 changed files with 39 additions and 2 deletions
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28
configs/shenzhou/README.txt
View File

@ -772,6 +772,34 @@ Where <subdir> is one of the following:
before the networking finally gives up and decides that no network is
available.
2. Enabling the ADC example:
The only internal signal for ADC testing is the potentiometer input:
ADC1_IN10(PC0) Potentiometer
External signals are also available on CON5 CN14:
ADC_IN8 (PB0) CON5 CN14 Pin2
ADC_IN9 (PB1) CON5 CN14 Pin1
The signal selection is hard-coded in configs/shenzhou/src/up_adc.c: The
potentiometer input (only) is selected.
These selections will enable sampling the potentiometer input at 100Hz using
Timer 1:
CONFIG_ANALOG=y : Enable analog device support
CONFIG_ADC=y : Enable generic ADC driver support
CONFIG_ADC_DMA=n : ADC DMA is not supported
CONFIG_STM32_ADC1=y : Enable ADC 1
CONFIG_STM32_TIM1=y : Enable Timer 1
CONFIG_STM32_TIM1_ADC=y : Use Timer 1 for ADC
CONFIG_STM32_TIM1_ADC1=y : Allocate Timer 1 to ADC 1
CONFIG_STM32_ADC1_SAMPLE_FREQUENCY=100 : Set sampling frequency to 100Hz
CONFIG_STM32_ADC1_TIMTRIG=0 : Trigger on timer output 0
CONFIG_EXAMPLES_ADC=y : Enable the apps/examples/adc built-in
nxwm
----
This is a special configuration setup for the NxWM window manager

13
configs/shenzhou/src/up_adc.c
View File

@ -85,12 +85,21 @@
* Private Data
************************************************************************************/
/* Identifying number of each ADC channel: Variable Resistor */
/* Identifying number of each ADC channel. The only internal signal for ADC testing
* is the potentiometer input:
*
* ADC1_IN10(PC0) Potentiometer
*
* External signals are also available on CON5 CN14:
*
* ADC_IN8 (PB0) CON5 CN14 Pin2
* ADC_IN9 (PB1) CON5 CN14 Pin1
*/
#ifdef CONFIG_STM32_ADC1
static const uint8_t g_chanlist[ADC1_NCHANNELS] = {10}; //{10, 8, 9};
/* Configurations of pins used byte each ADC channels */
/* Configurations of pins used by each ADC channel */
static const uint32_t g_pinlist[ADC1_NCHANNELS] = {GPIO_ADC12_IN10}; //{GPIO_ADC12_IN10, GPIO_ADC12_IN8, GPIO_ADC12_IN9};
#endif