Add support for STM32 Potentiometer via ADC3
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4252 42af7a65-404d-4744-a932-0658087f49c3
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@ -2,7 +2,7 @@
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* configs/stm3210e-eval/src/up_adc.c
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* arch/arm/src/board/up_adc.c
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*
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* Copyright (C) 2011 Gregory Nutt. All rights reserved.
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* Copyright (C) 2011-2012 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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@ -73,10 +73,13 @@
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#endif
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#if defined(CONFIG_STM32_ADC1) || defined(CONFIG_STM32_ADC2) || defined(CONFIG_STM32_ADC3)
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#ifndef CONFIG_STM32_ADC1
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# warning "Channel information only available for ADC1"
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#endif
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/* The number of ADC channels in the conversion list */
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#define ADC_NCHANNELS 1
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#define ADC1_NCHANNELS 1
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/************************************************************************************
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* Private Data
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@ -84,11 +87,13 @@
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/* Identifying number of each ADC channel: Variable Resistor */
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static const uint8_t g_chanlist[ADC_NCHANNELS] = {14};
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#ifdef CONFIG_STM32_ADC1
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static const uint8_t g_chanlist[ADC1_NCHANNELS] = {14};
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/* Configurations of pins used byte each ADC channels */
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static const uint32_t g_pinlist[ADC_NCHANNELS] = {GPIO_ADC1_IN14};
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static const uint32_t g_pinlist[ADC1_NCHANNELS] = {GPIO_ADC1_IN14};
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#endif
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/************************************************************************************
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* Private Functions
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@ -99,47 +104,61 @@ static const uint32_t g_pinlist[ADC_NCHANNELS] = {GPIO_ADC1_IN14};
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************************************************************************************/
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/************************************************************************************
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* Name: stm32_boardinitialize
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* Name: adc_devinit
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*
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* Description:
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* All STM32 architectures must provide the following entry point. This entry point
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* is called early in the intitialization -- after all memory has been configured
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* and mapped but before any devices have been initialized.
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* All STM32 architectures must provide the following interface to work with
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* examples/adc.
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*
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************************************************************************************/
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int adc_devinit(void)
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{
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#ifdef CONFIG_STM32_ADC1
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static bool initialized = false;
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struct adc_dev_s *adc;
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int ret;
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int i;
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/* Configure the pins as analog inputs for the selected channels */
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/* Check if we have already initialized */
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for(i = 0; i < ADC_NCHANNELS; i++)
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if (!initialized)
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{
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stm32_configgpio(g_pinlist[i]);
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/* Configure the pins as analog inputs for the selected channels */
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for (i = 0; i < ADC1_NCHANNELS; i++)
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{
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stm32_configgpio(g_pinlist[i]);
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}
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/* Call stm32_adcinitialize() to get an instance of the ADC interface */
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adc = stm32_adcinitialize(1, g_chanlist, ADC1_NCHANNELS);
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if (adc == NULL)
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{
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adbg("ERROR: Failed to get ADC interface\n");
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return;
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}
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/* Register the ADC driver at "/dev/adc0" */
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ret = adc_register("/dev/adc0", adc);
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if (ret < 0)
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{
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adbg("adc_register failed: %d\n", ret);
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return ret;
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}
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/* Now we are initialized */
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initialized = true;
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}
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/* Call stm32_adcinitialize() to get an instance of the ADC interface */
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adc = stm32_adcinitialize(1, g_chanlist, ADC_NCHANNELS);
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if (adc == NULL)
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{
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adbg("ERROR: Failed to get ADC interface\n");
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return;
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}
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/* Register the ADC driver at "/dev/adc0" */
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ret = adc_register("/dev/adc0", adc);
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if (ret < 0)
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{
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adbg("adc_register failed: %d\n", ret);
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}
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return ret;
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return OK;
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#else
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return -ENOSYS;
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#endif
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}
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#endif /* CONFIG_STM32_ADC || CONFIG_STM32_ADC2 || CONFIG_STM32_ADC3 */
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#endif /* CONFIG_STM32_ADC1 || CONFIG_STM32_ADC2 || CONFIG_STM32_ADC3 */
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#endif /* CONFIG_ADC */
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@ -590,9 +590,49 @@ Where <subdir> is one of the following:
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CONFIG_NSH_IPADDR=(10<<24|0<<16|0<<8|2) : Target IP address 10.0.0.2
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CONFIG_NSH_DRIPADDR=(10<<24|0<<16|0<<8|1) : Host IP address 10.0.0.1
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NOTE: This example assumes that a network is connected. During its
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initialization, it will try to negotiate the link speed. If you have
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no network connected when you reset the board, there will be a long
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delay (maybe 30 seconds?) before anything happens. That is the timeout
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before the networking finally gives up and decides that no network is
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available.
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NOTES:
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1. This example assumes that a network is connected. During its
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initialization, it will try to negotiate the link speed. If you have
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no network connected when you reset the board, there will be a long
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delay (maybe 30 seconds?) before anything happens. That is the timeout
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before the networking finally gives up and decides that no network is
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available.
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2. This example supports the ADC test (apps/examples/adc) but this must
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be manually enabled by selecting:
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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_ADC3=y : Assign timer 1 to driver ADC3 sampling
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See also apps/examples/README.txt
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General debug for analog devices (ADC/DAC):
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CONFIG_DEBUG_ANALOG
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3. This example supports the PWM test (apps/examples/pwm) but this must
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be manually enabled by selecting:
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CONFIG_PWM=y : Enable the generic PWM infrastructure
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CONFIG_STM32_TIM4_PWM=y : Use TIM4 to generate PWM output
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See also apps/examples/README.txt
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Special PWM-only debug options:
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CONFIG_DEBUG_PWM
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4. This example supports the CAN loopback test (apps/examples/can) but this
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must be manually enabled by selecting:
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CONFIG_CAN=y : Enable the generic CAN infrastructure
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CONFIG_STM32_CAN1=y : Enable CAN1
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CONFIG_CAN_LOOPBACK=y : Enable CAN loopback mode
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See also apps/examples/README.txt
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Special CAN-only debug options:
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CONFIG_DEBUG_CAN
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CONFIG_CAN_REGDEBUG
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@ -50,6 +50,10 @@ CONFIGURED_APPS += netutils/webclient
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CONFIGURED_APPS += netutils/tftpc
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endif
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ifeq ($(CONFIG_ADC),y)
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CONFIGURED_APPS += examples/adc
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endif
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ifeq ($(CONFIG_PWM),y)
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CONFIGURED_APPS += examples/pwm
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endif
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@ -323,6 +323,15 @@ CONFIG_STM32_PHYSR_FULLDUPLEX=0x0004
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CONFIG_STM32_ETH_PTP=n
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CONFIG_STM32_ETHMAC_REGDEBUG=n
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#
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# ADC configuration
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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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#
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CONFIG_ADC=n
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CONFIG_STM32_TIM1_ADC3=y
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#
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# PWM configuration
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#
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@ -459,6 +468,9 @@ CONFIG_DEBUG_LCD=n
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CONFIG_DEBUG_USB=n
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CONFIG_DEBUG_NET=n
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CONFIG_DEBUG_RTC=n
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CONFIG_DEBUG_ANALOG=n
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CONFIG_DEBUG_PWM=n
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CONFIG_DEBUG_CAN=n
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CONFIG_HAVE_CXX=y
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CONFIG_MM_REGIONS=2
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CONFIG_ARCH_LOWPUTC=y
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@ -1203,6 +1215,53 @@ CONFIG_EXAMPLES_USBSERIAL_TRACETRANSFERS=n
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CONFIG_EXAMPLES_USBSERIAL_TRACECONTROLLER=n
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CONFIG_EXAMPLES_USBSERIAL_TRACEINTERRUPTS=n
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#
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# Settings for examples/adc
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#
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# CONFIG_ADC - Enabled ADC support
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# CONFIG_NSH_BUILTIN_APPS - Build the ADC test as an NSH built-in function.
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# Default: Built as a standalone problem
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#
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# CONFIG_EXAMPLES_ADC_DEVPATH - The path to the ADC device. Default: /dev/adc0
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# CONFIG_EXAMPLES_ADC_NSAMPLES - If CONFIG_NSH_BUILTIN_APPS
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# is defined, then the number of samples is provided on the command line
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# and this value is ignored. Otherwise, this number of samples is
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# collected and the program terminates. Default: Samples are collected
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# indefinitely.
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# CONFIG_EXAMPLES_ADC_GROUPSIZE - The number of samples to read at once.
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# Default: 4
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#
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# Settings for examples/can
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#
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# CONFIG_CAN - Enables CAN support.
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# CONFIG_CAN_LOOPBACK - A CAN driver may or may not support a loopback
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# mode for testing. The STM32 CAN driver does support loopback mode.
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# CONFIG_NSH_BUILTIN_APPS - Build the CAN test as an NSH built-in function.
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# Default: Built as a standalone problem
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#
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# CONFIG_EXAMPLES_CAN_DEVPATH - The path to the CAN device. Default: /dev/can0
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# CONFIG_EXAMPLES_CAN_NMSGS - If CONFIG_NSH_BUILTIN_APPS
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# is defined, then the number of loops is provided on the command line
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# and this value is ignored. Otherwise, this number of CAN message is
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# collected and the program terminates. Default: If built as an NSH
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# built-in, the default is 32. Otherwise messages are sent and received
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# indefinitely.
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#
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# Settings for examples/pwm
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#
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# CONFIG_PWM - Enables PWM support.
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# CONFIG_NSH_BUILTIN_APPS - Build the PWM test as an NSH built-in function.
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# Default: Not built! The example can only be used as an NSH built-in
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# application
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#
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# CONFIG_EXAMPLES_PWM_DEVPATH - The path to the PWM device. Default: /dev/pwm0
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# CONFIG_EXAMPLES_PWM_FREQUENCY - The initial PWM frequency. Default: 100 Hz
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# CONFIG_EXAMPLES_PWM_DUTYPCT - The initial PWM duty as a percentage. Default: 50%
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# CONFIG_EXAMPLES_PWM_DURATION - The initial PWM pulse train duration in sectonds.
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# as a percentage. Default: 5 seconds
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#
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# Stack and heap information
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#
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@ -2,7 +2,7 @@
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* configs/stm3240g-eval/src/up_adc.c
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* arch/arm/src/board/up_adc.c
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*
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* Copyright (C) 2011 Gregory Nutt. All rights reserved.
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* Copyright (C) 2011-2012 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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@ -73,6 +73,30 @@
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#endif
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#if defined(CONFIG_STM32_ADC1) || defined(CONFIG_STM32_ADC2) || defined(CONFIG_STM32_ADC3)
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#ifndef CONFIG_STM32_ADC3
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# warning "Channel information only available for ADC3"
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#endif
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/* The number of ADC channels in the conversion list */
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#define ADC3_NCHANNELS 1
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/************************************************************************************
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* Private Data
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************************************************************************************/
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/* The STM3240G-EVAL has a 10 Kohm potentiometer RV1 connected to PF9 of
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* STM32F407IGH6 on the board: TIM14_CH1/FSMC_CD/ADC3_IN7
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*/
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/* Identifying number of each ADC channel: Variable Resistor. */
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#ifdef CONFIG_STM32_ADC3
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static const uint8_t g_chanlist[ADC3_NCHANNELS] = {7};
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/* Configurations of pins used byte each ADC channels */
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static const uint32_t g_pinlist[ADC3_NCHANNELS] = {GPIO_ADC3_IN7};
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#endif
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/************************************************************************************
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* Private Functions
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@ -93,19 +117,31 @@
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int adc_devinit(void)
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{
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#ifdef CONFIG_STM32_ADC3
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static bool initialized = false;
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struct adc_dev_s *adc;
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int ret;
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int i;
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/* Check if we have already initialized */
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if (!initialized)
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{
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/* Configure the pins as analog inputs for the selected channels */
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#warning "Missing Logic"
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for (i = 0; i < ADC3_NCHANNELS; i++)
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{
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stm32_configgpio(g_pinlist[i]);
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}
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/* Call stm32_adcinitialize() to get an instance of the ADC interface */
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#warning "Missing Logic"
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adc = stm32_adcinitialize(1, g_chanlist, ADC3_NCHANNELS);
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if (adc == NULL)
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{
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adbg("ERROR: Failed to get ADC interface\n");
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return -ENODEV;
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}
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/* Register the ADC driver at "/dev/adc0" */
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@ -122,7 +158,10 @@ int adc_devinit(void)
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}
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return OK;
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#else
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return -ENOSYS;
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#endif
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}
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#endif /* CONFIG_STM32_ADC || CONFIG_STM32_ADC2 || CONFIG_STM32_ADC3 */
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#endif /* CONFIG_STM32_ADC1 || CONFIG_STM32_ADC2 || CONFIG_STM32_ADC3 */
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#endif /* CONFIG_ADC */
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