149 lines
4.9 KiB
C
149 lines
4.9 KiB
C
/*
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ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
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2011 Giovanni Di Sirio.
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This file is part of ChibiOS/RT.
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ChibiOS/RT is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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ChibiOS/RT is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* @file STM32/GPIOv2/pal_lld.c
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* @brief STM32L1xx/STM32F2xx GPIO low level driver code.
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*
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* @addtogroup PAL
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* @{
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*/
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#include "ch.h"
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#include "hal.h"
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#if HAL_USE_PAL || defined(__DOXYGEN__)
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#if defined(STM32L1XX_MD)
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#define AHB_EN_MASK (RCC_AHBENR_GPIOAEN | RCC_AHBENR_GPIOBEN | \
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RCC_AHBENR_GPIOCEN | RCC_AHBENR_GPIODEN | \
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RCC_AHBENR_GPIOEEN | RCC_AHBENR_GPIOHEN)
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#define AHB_LPEN_MASK AHB_EN_MASK
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#elif defined(STM32F2XX)
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#define AHB1_EN_MASK (RCC_AHB1ENR_GPIOAEN | RCC_AHB1ENR_GPIOBEN | \
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RCC_AHB1ENR_GPIOCEN | RCC_AHB1ENR_GPIODEN | \
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RCC_AHB1ENR_GPIOEEN | RCC_AHB1ENR_GPIOFEN | \
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RCC_AHB1ENR_GPIOGEN | RCC_AHB1ENR_GPIOHEN | \
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RCC_AHB1ENR_GPIOIEN)
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#define AHB1_LPEN_MASK AHB1_EN_MASK
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#else
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#error "missing or usupported platform for GPIOv2 PAL driver"
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#endif
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/*===========================================================================*/
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/* Driver exported variables. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Driver local variables. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Driver local functions. */
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/*===========================================================================*/
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static void initgpio(GPIO_TypeDef *gpiop, const stm32_gpio_setup_t *config) {
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gpiop->MODER = config->moder;
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gpiop->OTYPER = config->otyper;
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gpiop->OSPEEDR = config->ospeedr;
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gpiop->PUPDR = config->pupdr;
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gpiop->ODR = config->odr;
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gpiop->AFRL = config->afrl;
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gpiop->AFRH = config->afrh;
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}
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/*===========================================================================*/
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/* Driver interrupt handlers. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Driver exported functions. */
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/*===========================================================================*/
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/**
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* @brief STM32 I/O ports configuration.
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* @details Ports A-D(E, F, G, H) clocks enabled.
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*
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* @param[in] config the STM32 ports configuration
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*
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* @notapi
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*/
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void _pal_lld_init(const PALConfig *config) {
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/*
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* Enables the GPIO related clocks.
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*/
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#if defined(STM32L1XX_MD)
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RCC->AHBENR |= AHB_EN_MASK;
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RCC->AHBLPENR |= AHB_LPEN_MASK;
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#elif defined(STM32F2XX)
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RCC->AHB1ENR |= AHB1_EN_MASK;
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RCC->AHB1LPENR |= AHB1_LPEN_MASK;
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#endif
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/*
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* Initial GPIO setup.
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*/
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initgpio(GPIOA, &config->PAData);
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initgpio(GPIOB, &config->PBData);
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initgpio(GPIOC, &config->PCData);
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initgpio(GPIOD, &config->PDData);
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#if STM32_HAS_GPIOE
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initgpio(GPIOE, &config->PEData);
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#endif
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#if STM32_HAS_GPIOF
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initgpio(GPIOF, &config->PFData);
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#endif
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#if STM32_HAS_GPIOG
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initgpio(GPIOG, &config->PGData);
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#endif
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#if STM32_HAS_GPIOH
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initgpio(GPIOH, &config->PHData);
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#endif
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#if STM32_HAS_GPIOI
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initgpio(GPIOI, &config->PIData);
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#endif
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}
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/**
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* @brief Pads mode setup.
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* @details This function programs a pads group belonging to the same port
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* with the specified mode.
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* @note This function is not meant to be invoked directly by the
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* application code.
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* @note @p PAL_MODE_UNCONNECTED is implemented as push pull at minimum
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* speed.
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*
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* @param[in] port the port identifier
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* @param[in] mask the group mask
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* @param[in] mode the mode
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*
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* @notapi
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*/
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void _pal_lld_setgroupmode(ioportid_t port,
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ioportmask_t mask,
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iomode_t mode) {
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}
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#endif /* HAL_USE_PAL */
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/** @} */
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