From 48026bb824fd2d9cfb00ecd040db6ef3a416bae9 Mon Sep 17 00:00:00 2001 From: Clyne Sullivan Date: Fri, 22 Jan 2021 21:43:36 -0500 Subject: upload initial port --- ChibiOS_20.3.2/os/hal/src/hal_adc.c | 324 ++++++++++++++++++++++++++++++++++++ 1 file changed, 324 insertions(+) create mode 100644 ChibiOS_20.3.2/os/hal/src/hal_adc.c (limited to 'ChibiOS_20.3.2/os/hal/src/hal_adc.c') diff --git a/ChibiOS_20.3.2/os/hal/src/hal_adc.c b/ChibiOS_20.3.2/os/hal/src/hal_adc.c new file mode 100644 index 0000000..41234ef --- /dev/null +++ b/ChibiOS_20.3.2/os/hal/src/hal_adc.c @@ -0,0 +1,324 @@ +/* + ChibiOS - Copyright (C) 2006..2018 Giovanni Di Sirio + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. +*/ + +/** + * @file hal_adc.c + * @brief ADC Driver code. + * + * @addtogroup ADC + * @{ + */ + +#include "hal.h" + +#if (HAL_USE_ADC == TRUE) || defined(__DOXYGEN__) + +/*===========================================================================*/ +/* Driver local definitions. */ +/*===========================================================================*/ + +/*===========================================================================*/ +/* Driver exported variables. */ +/*===========================================================================*/ + +/*===========================================================================*/ +/* Driver local variables and types. */ +/*===========================================================================*/ + +/*===========================================================================*/ +/* Driver local functions. */ +/*===========================================================================*/ + +/*===========================================================================*/ +/* Driver exported functions. */ +/*===========================================================================*/ + +/** + * @brief ADC Driver initialization. + * @note This function is implicitly invoked by @p halInit(), there is + * no need to explicitly initialize the driver. + * + * @init + */ +void adcInit(void) { + + adc_lld_init(); +} + +/** + * @brief Initializes the standard part of a @p ADCDriver structure. + * + * @param[out] adcp pointer to the @p ADCDriver object + * + * @init + */ +void adcObjectInit(ADCDriver *adcp) { + + adcp->state = ADC_STOP; + adcp->config = NULL; + adcp->samples = NULL; + adcp->depth = 0; + adcp->grpp = NULL; +#if ADC_USE_WAIT == TRUE + adcp->thread = NULL; +#endif +#if ADC_USE_MUTUAL_EXCLUSION == TRUE + osalMutexObjectInit(&adcp->mutex); +#endif +#if defined(ADC_DRIVER_EXT_INIT_HOOK) + ADC_DRIVER_EXT_INIT_HOOK(adcp); +#endif +} + +/** + * @brief Configures and activates the ADC peripheral. + * + * @param[in] adcp pointer to the @p ADCDriver object + * @param[in] config pointer to the @p ADCConfig object. Depending on + * the implementation the value can be @p NULL. + * + * @api + */ +void adcStart(ADCDriver *adcp, const ADCConfig *config) { + + osalDbgCheck(adcp != NULL); + + osalSysLock(); + osalDbgAssert((adcp->state == ADC_STOP) || (adcp->state == ADC_READY), + "invalid state"); + adcp->config = config; + adc_lld_start(adcp); + adcp->state = ADC_READY; + osalSysUnlock(); +} + +/** + * @brief Deactivates the ADC peripheral. + * + * @param[in] adcp pointer to the @p ADCDriver object + * + * @api + */ +void adcStop(ADCDriver *adcp) { + + osalDbgCheck(adcp != NULL); + + osalSysLock(); + + osalDbgAssert((adcp->state == ADC_STOP) || (adcp->state == ADC_READY), + "invalid state"); + + adc_lld_stop(adcp); + adcp->config = NULL; + adcp->state = ADC_STOP; + + osalSysUnlock(); +} + +/** + * @brief Starts an ADC conversion. + * @details Starts an asynchronous conversion operation. + * @note The buffer is organized as a matrix of M*N elements where M is the + * channels number configured into the conversion group and N is the + * buffer depth. The samples are sequentially written into the buffer + * with no gaps. + * + * @param[in] adcp pointer to the @p ADCDriver object + * @param[in] grpp pointer to a @p ADCConversionGroup object + * @param[out] samples pointer to the samples buffer + * @param[in] depth buffer depth (matrix rows number). The buffer depth + * must be one or an even number. + * + * @api + */ +void adcStartConversion(ADCDriver *adcp, + const ADCConversionGroup *grpp, + adcsample_t *samples, + size_t depth) { + + osalSysLock(); + adcStartConversionI(adcp, grpp, samples, depth); + osalSysUnlock(); +} + +/** + * @brief Starts an ADC conversion. + * @details Starts an asynchronous conversion operation. + * @post The callbacks associated to the conversion group will be invoked + * on buffer fill and error events. + * @note The buffer is organized as a matrix of M*N elements where M is the + * channels number configured into the conversion group and N is the + * buffer depth. The samples are sequentially written into the buffer + * with no gaps. + * + * @param[in] adcp pointer to the @p ADCDriver object + * @param[in] grpp pointer to a @p ADCConversionGroup object + * @param[out] samples pointer to the samples buffer + * @param[in] depth buffer depth (matrix rows number). The buffer depth + * must be one or an even number. + * + * @iclass + */ +void adcStartConversionI(ADCDriver *adcp, + const ADCConversionGroup *grpp, + adcsample_t *samples, + size_t depth) { + + osalDbgCheckClassI(); + osalDbgCheck((adcp != NULL) && (grpp != NULL) && (samples != NULL) && + (depth > 0U) && ((depth == 1U) || ((depth & 1U) == 0U))); + osalDbgAssert((adcp->state == ADC_READY) || + (adcp->state == ADC_ERROR), + "not ready"); + + adcp->samples = samples; + adcp->depth = depth; + adcp->grpp = grpp; + adcp->state = ADC_ACTIVE; + adc_lld_start_conversion(adcp); +} + +/** + * @brief Stops an ongoing conversion. + * @details This function stops the currently ongoing conversion and returns + * the driver in the @p ADC_READY state. If there was no conversion + * being processed then the function does nothing. + * + * @param[in] adcp pointer to the @p ADCDriver object + * + * @api + */ +void adcStopConversion(ADCDriver *adcp) { + + osalDbgCheck(adcp != NULL); + + osalSysLock(); + osalDbgAssert((adcp->state == ADC_READY) || (adcp->state == ADC_ACTIVE), + "invalid state"); + if (adcp->state != ADC_READY) { + adc_lld_stop_conversion(adcp); + adcp->grpp = NULL; + adcp->state = ADC_READY; + _adc_reset_s(adcp); + } + osalSysUnlock(); +} + +/** + * @brief Stops an ongoing conversion. + * @details This function stops the currently ongoing conversion and returns + * the driver in the @p ADC_READY state. If there was no conversion + * being processed then the function does nothing. + * + * @param[in] adcp pointer to the @p ADCDriver object + * + * @iclass + */ +void adcStopConversionI(ADCDriver *adcp) { + + osalDbgCheckClassI(); + osalDbgCheck(adcp != NULL); + osalDbgAssert((adcp->state == ADC_READY) || + (adcp->state == ADC_ACTIVE) || + (adcp->state == ADC_COMPLETE), + "invalid state"); + + if (adcp->state != ADC_READY) { + adc_lld_stop_conversion(adcp); + adcp->grpp = NULL; + adcp->state = ADC_READY; + _adc_reset_i(adcp); + } +} + +#if (ADC_USE_WAIT == TRUE) || defined(__DOXYGEN__) +/** + * @brief Performs an ADC conversion. + * @details Performs a synchronous conversion operation. + * @note The buffer is organized as a matrix of M*N elements where M is the + * channels number configured into the conversion group and N is the + * buffer depth. The samples are sequentially written into the buffer + * with no gaps. + * + * @param[in] adcp pointer to the @p ADCDriver object + * @param[in] grpp pointer to a @p ADCConversionGroup object + * @param[out] samples pointer to the samples buffer + * @param[in] depth buffer depth (matrix rows number). The buffer depth + * must be one or an even number. + * @return The operation result. + * @retval MSG_OK Conversion finished. + * @retval MSG_RESET The conversion has been stopped using + * @p acdStopConversion() or @p acdStopConversionI(), + * the result buffer may contain incorrect data. + * @retval MSG_TIMEOUT The conversion has been stopped because an hardware + * error. + * + * @api + */ +msg_t adcConvert(ADCDriver *adcp, + const ADCConversionGroup *grpp, + adcsample_t *samples, + size_t depth) { + msg_t msg; + + osalSysLock(); + osalDbgAssert(adcp->thread == NULL, "already waiting"); + adcStartConversionI(adcp, grpp, samples, depth); + msg = osalThreadSuspendS(&adcp->thread); + osalSysUnlock(); + return msg; +} +#endif /* ADC_USE_WAIT == TRUE */ + +#if (ADC_USE_MUTUAL_EXCLUSION == TRUE) || defined(__DOXYGEN__) +/** + * @brief Gains exclusive access to the ADC peripheral. + * @details This function tries to gain ownership to the ADC bus, if the bus + * is already being used then the invoking thread is queued. + * @pre In order to use this function the option + * @p ADC_USE_MUTUAL_EXCLUSION must be enabled. + * + * @param[in] adcp pointer to the @p ADCDriver object + * + * @api + */ +void adcAcquireBus(ADCDriver *adcp) { + + osalDbgCheck(adcp != NULL); + + osalMutexLock(&adcp->mutex); +} + +/** + * @brief Releases exclusive access to the ADC peripheral. + * @pre In order to use this function the option + * @p ADC_USE_MUTUAL_EXCLUSION must be enabled. + * + * @param[in] adcp pointer to the @p ADCDriver object + * + * @api + */ +void adcReleaseBus(ADCDriver *adcp) { + + osalDbgCheck(adcp != NULL); + + osalMutexUnlock(&adcp->mutex); +} +#endif /* ADC_USE_MUTUAL_EXCLUSION == TRUE */ + +#endif /* HAL_USE_ADC == TRUE */ + +/** @} */ -- cgit v1.2.3