From 03d2638916eb5a23a5648f4908a2b84c9bd6ac0e Mon Sep 17 00:00:00 2001 From: patacongo Date: Fri, 16 Dec 2011 00:32:11 +0000 Subject: [PATCH] Updated STM32 ADC driver git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4189 42af7a65-404d-4744-a932-0658087f49c3 --- configs/stm3210e-eval/src/up_adc.c | 249 ++++++++++++++++------------- 1 file changed, 139 insertions(+), 110 deletions(-) diff --git a/configs/stm3210e-eval/src/up_adc.c b/configs/stm3210e-eval/src/up_adc.c index c2a0d2cfe8..92e21a8e5e 100644 --- a/configs/stm3210e-eval/src/up_adc.c +++ b/configs/stm3210e-eval/src/up_adc.c @@ -1,111 +1,140 @@ -/************************************************************************************ - * configs/stm3210e-eval/src/up_adc.c - * arch/arm/src/board/up_adc.c - * - * Copyright (C) 2011 Gregory Nutt. All rights reserved. - * Author: Gregory Nutt - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * 3. Neither the name NuttX nor the names of its contributors may be - * used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS - * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE - * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, - * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS - * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED - * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN - * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - * - ************************************************************************************/ - -/************************************************************************************ - * Included Files - ************************************************************************************/ - -#include - -#include - -#include -#include - -#include "chip.h" -#include "up_arch.h" -#include "stm3210e-internal.h" - -#ifdef CONFIG_ADC - -/************************************************************************************ - * Definitions - ************************************************************************************/ - -/* Configuration ************************************************************/ -/* Up to 3 ADC interfaces are supported */ - -#if STM32_NADC < 3 -# undef CONFIG_STM32_ADC3 -#endif - -#if STM32_NADC < 2 -# undef CONFIG_STM32_ADC2 -#endif - -#if STM32_NADC < 1 -# undef CONFIG_STM32_ADC1 -#endif - -#if defined(CONFIG_STM32_ADC1) || defined(CONFIG_STM32_ADC2) || defined(CONFIG_STM32_ADC3) - -/************************************************************************************ - * Private Functions - ************************************************************************************/ - -/************************************************************************************ - * Public Functions - ************************************************************************************/ - -/************************************************************************************ - * Name: stm32_boardinitialize - * - * Description: - * All STM32 architectures must provide the following entry point. This entry point - * is called early in the intitialization -- after all memory has been configured - * and mapped but before any devices have been initialized. - * - ************************************************************************************/ - -void adc_devinit(void) -{ - struct adc_dev_s *adc; - int ret; - - /* Call stm32_adcinitialize() to get an instance of the ADC interface */ -#warning "Missing Logic" - - /* Register the ADC driver at "/dev/adc0" */ - - ret = adc_register("/dev/adc0", adc); - if (ret < 0) - { - adbg("adc_register failed: %d\n", ret); - } -} - -#endif /* CONFIG_STM32_ADC || CONFIG_STM32_ADC2 || CONFIG_STM32_ADC3 */ +/************************************************************************************ + * configs/stm3210e-eval/src/up_adc.c + * arch/arm/src/board/up_adc.c + * + * Copyright (C) 2011 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ************************************************************************************/ + +/************************************************************************************ + * Included Files + ************************************************************************************/ + +#include + +#include + +#include +#include + +#include "chip.h" +#include "up_arch.h" +#include "stm3210e-internal.h" + +#ifdef CONFIG_ADC + +/************************************************************************************ + * Definitions + ************************************************************************************/ + +/* Configuration ************************************************************/ +/* Up to 3 ADC interfaces are supported */ + +#if STM32_NADC < 3 +# undef CONFIG_STM32_ADC3 +#endif + +#if STM32_NADC < 2 +# undef CONFIG_STM32_ADC2 +#endif + +#if STM32_NADC < 1 +# undef CONFIG_STM32_ADC1 +#endif + +#if defined(CONFIG_STM32_ADC1) || defined(CONFIG_STM32_ADC2) || defined(CONFIG_STM32_ADC3) + +/* The number of ADC channels in the conversion list */ + +#define ADC_NCHANNELS 2 + +/************************************************************************************ + * Private Data + ************************************************************************************/ + +/* Identifying number of each ADC channel */ + +static const uint8_t g_chanlist[ADC_NCHANNELS] = {14, 10}; + +/* Configurations of pins used byte each ADC channels */ + +static const uint32_t g_pinlist[ADC_NCHANNELS] = {GPIO_ADC1_IN14 , GPIO_ADC1_IN10}; + +/************************************************************************************ + * Private Functions + ************************************************************************************/ + +/************************************************************************************ + * Public Functions + ************************************************************************************/ + +/************************************************************************************ + * Name: stm32_boardinitialize + * + * Description: + * All STM32 architectures must provide the following entry point. This entry point + * is called early in the intitialization -- after all memory has been configured + * and mapped but before any devices have been initialized. + * + ************************************************************************************/ + +int adc_devinit(void) +{ + struct adc_dev_s *adc; + int ret; + int i; + + avdbg("Entry\n"); + + /* Configure the pins as analog inputs for the selected channels */^M + + for(i = 0; i < ADC_NCHANNELS; i++) + { + stm32_configgpio(chanlist[i]); + } + + /* Call stm32_adcinitialize() to get an instance of the ADC interface */^M + + adc = stm32_adcinitialize(1, g_chanlist, ADC_NCHANNELS); + + /* Register the ADC driver at "/dev/adc0" */ + + ret = adc_register("/dev/adc0", adc); + if (ret < 0) + { + adbg("adc_register failed: %d\n", ret); + } + + return OK; +} + +#endif /* CONFIG_STM32_ADC || CONFIG_STM32_ADC2 || CONFIG_STM32_ADC3 */ #endif /* CONFIG_ADC */ \ No newline at end of file