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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 before the networking finally gives up and decides that no network is
available. 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 nxwm
---- ----
This is a special configuration setup for the NxWM window manager 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 * 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 #ifdef CONFIG_STM32_ADC1
static const uint8_t g_chanlist[ADC1_NCHANNELS] = {10}; //{10, 8, 9}; 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}; static const uint32_t g_pinlist[ADC1_NCHANNELS] = {GPIO_ADC12_IN10}; //{GPIO_ADC12_IN10, GPIO_ADC12_IN8, GPIO_ADC12_IN9};
#endif #endif