From e619097f77edeceb5e8c38dc7e614c7fccd36cbf Mon Sep 17 00:00:00 2001 From: gdisirio Date: Sun, 4 Aug 2013 13:38:53 +0000 Subject: git-svn-id: svn://svn.code.sf.net/p/chibios/svn/branches/kernel_3_dev@6073 35acf78f-673a-0410-8e92-d51de3d6d3f4 --- os/halnew/platforms/STM32/GPIOv2/pal_lld.h | 453 +++++++++++++++++++++++++++++ 1 file changed, 453 insertions(+) create mode 100644 os/halnew/platforms/STM32/GPIOv2/pal_lld.h (limited to 'os/halnew/platforms/STM32/GPIOv2/pal_lld.h') diff --git a/os/halnew/platforms/STM32/GPIOv2/pal_lld.h b/os/halnew/platforms/STM32/GPIOv2/pal_lld.h new file mode 100644 index 000000000..82b04c7f4 --- /dev/null +++ b/os/halnew/platforms/STM32/GPIOv2/pal_lld.h @@ -0,0 +1,453 @@ +/* + ChibiOS/RT - Copyright (C) 2006-2013 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 STM32/GPIOv2/pal_lld.h + * @brief STM32L1xx/STM32F2xx/STM32F4xx GPIO low level driver header. + * + * @addtogroup PAL + * @{ + */ + +#ifndef _PAL_LLD_H_ +#define _PAL_LLD_H_ + +#if HAL_USE_PAL || defined(__DOXYGEN__) + +/*===========================================================================*/ +/* Unsupported modes and specific modes */ +/*===========================================================================*/ + +#undef PAL_MODE_RESET +#undef PAL_MODE_UNCONNECTED +#undef PAL_MODE_INPUT +#undef PAL_MODE_INPUT_PULLUP +#undef PAL_MODE_INPUT_PULLDOWN +#undef PAL_MODE_INPUT_ANALOG +#undef PAL_MODE_OUTPUT_PUSHPULL +#undef PAL_MODE_OUTPUT_OPENDRAIN + +/** + * @name STM32-specific I/O mode flags + * @{ + */ +#define PAL_STM32_MODE_MASK (3 << 0) +#define PAL_STM32_MODE_INPUT (0 << 0) +#define PAL_STM32_MODE_OUTPUT (1 << 0) +#define PAL_STM32_MODE_ALTERNATE (2 << 0) +#define PAL_STM32_MODE_ANALOG (3 << 0) + +#define PAL_STM32_OTYPE_MASK (1 << 2) +#define PAL_STM32_OTYPE_PUSHPULL (0 << 2) +#define PAL_STM32_OTYPE_OPENDRAIN (1 << 2) + +#define PAL_STM32_OSPEED_MASK (3 << 3) +#define PAL_STM32_OSPEED_LOWEST (0 << 3) +#if defined(STM32F0XX) || defined(STM32F30X) || defined(STM32F37X) +#define PAL_STM32_OSPEED_MID (1 << 3) +#else +#define PAL_STM32_OSPEED_MID1 (1 << 3) +#define PAL_STM32_OSPEED_MID2 (2 << 3) +#endif +#define PAL_STM32_OSPEED_HIGHEST (3 << 3) + +#define PAL_STM32_PUDR_MASK (3 << 5) +#define PAL_STM32_PUDR_FLOATING (0 << 5) +#define PAL_STM32_PUDR_PULLUP (1 << 5) +#define PAL_STM32_PUDR_PULLDOWN (2 << 5) + +#define PAL_STM32_ALTERNATE_MASK (15 << 7) +#define PAL_STM32_ALTERNATE(n) ((n) << 7) + +/** + * @brief Alternate function. + * + * @param[in] n alternate function selector + */ +#define PAL_MODE_ALTERNATE(n) (PAL_STM32_MODE_ALTERNATE | \ + PAL_STM32_ALTERNATE(n)) +/** @} */ + +/** + * @name Standard I/O mode flags + * @{ + */ +/** + * @brief This mode is implemented as input. + */ +#define PAL_MODE_RESET PAL_STM32_MODE_INPUT + +/** + * @brief This mode is implemented as input with pull-up. + */ +#define PAL_MODE_UNCONNECTED PAL_MODE_INPUT_PULLUP + +/** + * @brief Regular input high-Z pad. + */ +#define PAL_MODE_INPUT PAL_STM32_MODE_INPUT + +/** + * @brief Input pad with weak pull up resistor. + */ +#define PAL_MODE_INPUT_PULLUP (PAL_STM32_MODE_INPUT | \ + PAL_STM32_PUDR_PULLUP) + +/** + * @brief Input pad with weak pull down resistor. + */ +#define PAL_MODE_INPUT_PULLDOWN (PAL_STM32_MODE_INPUT | \ + PAL_STM32_PUDR_PULLDOWN) + +/** + * @brief Analog input mode. + */ +#define PAL_MODE_INPUT_ANALOG PAL_STM32_MODE_ANALOG + +/** + * @brief Push-pull output pad. + */ +#define PAL_MODE_OUTPUT_PUSHPULL (PAL_STM32_MODE_OUTPUT | \ + PAL_STM32_OTYPE_PUSHPULL) + +/** + * @brief Open-drain output pad. + */ +#define PAL_MODE_OUTPUT_OPENDRAIN (PAL_STM32_MODE_OUTPUT | \ + PAL_STM32_OTYPE_OPENDRAIN) +/** @} */ + +/*===========================================================================*/ +/* I/O Ports Types and constants. */ +/*===========================================================================*/ + +/** + * @brief STM32 GPIO registers block. + */ +typedef struct { + + volatile uint32_t MODER; + volatile uint32_t OTYPER; + volatile uint32_t OSPEEDR; + volatile uint32_t PUPDR; + volatile uint32_t IDR; + volatile uint32_t ODR; + volatile union { + uint32_t W; + struct { + uint16_t set; + uint16_t clear; + } H; + } BSRR; + volatile uint32_t LCKR; + volatile uint32_t AFRL; + volatile uint32_t AFRH; +} GPIO_TypeDef; + +/** + * @brief GPIO port setup info. + */ +typedef struct { + /** Initial value for MODER register.*/ + uint32_t moder; + /** Initial value for OTYPER register.*/ + uint32_t otyper; + /** Initial value for OSPEEDR register.*/ + uint32_t ospeedr; + /** Initial value for PUPDR register.*/ + uint32_t pupdr; + /** Initial value for ODR register.*/ + uint32_t odr; + /** Initial value for AFRL register.*/ + uint32_t afrl; + /** Initial value for AFRH register.*/ + uint32_t afrh; +} stm32_gpio_setup_t; + +/** + * @brief STM32 GPIO static initializer. + * @details An instance of this structure must be passed to @p palInit() at + * system startup time in order to initialize the digital I/O + * subsystem. This represents only the initial setup, specific pads + * or whole ports can be reprogrammed at later time. + */ +typedef struct { + /** @brief Port A setup data.*/ + stm32_gpio_setup_t PAData; + /** @brief Port B setup data.*/ + stm32_gpio_setup_t PBData; + /** @brief Port C setup data.*/ + stm32_gpio_setup_t PCData; + /** @brief Port D setup data.*/ + stm32_gpio_setup_t PDData; +#if STM32_HAS_GPIOE + /** @brief Port E setup data.*/ + stm32_gpio_setup_t PEData; +#endif +#if STM32_HAS_GPIOF + /** @brief Port F setup data.*/ + stm32_gpio_setup_t PFData; +#endif +#if STM32_HAS_GPIOG + /** @brief Port G setup data.*/ + stm32_gpio_setup_t PGData; +#endif +#if STM32_HAS_GPIOH + /** @brief Port H setup data.*/ + stm32_gpio_setup_t PHData; +#endif +#if STM32_HAS_GPIOI + /** @brief Port I setup data.*/ + stm32_gpio_setup_t PIData; +#endif +} PALConfig; + +/** + * @brief Width, in bits, of an I/O port. + */ +#define PAL_IOPORTS_WIDTH 16 + +/** + * @brief Whole port mask. + * @details This macro specifies all the valid bits into a port. + */ +#define PAL_WHOLE_PORT ((ioportmask_t)0xFFFF) + +/** + * @brief Digital I/O port sized unsigned type. + */ +typedef uint32_t ioportmask_t; + +/** + * @brief Digital I/O modes. + */ +typedef uint32_t iomode_t; + +/** + * @brief Port Identifier. + * @details This type can be a scalar or some kind of pointer, do not make + * any assumption about it, use the provided macros when populating + * variables of this type. + */ +typedef GPIO_TypeDef * ioportid_t; + +/*===========================================================================*/ +/* I/O Ports Identifiers. */ +/* The low level driver wraps the definitions already present in the STM32 */ +/* firmware library. */ +/*===========================================================================*/ + +/** + * @brief GPIO port A identifier. + */ +#if STM32_HAS_GPIOA || defined(__DOXYGEN__) +#define IOPORT1 GPIOA +#endif + +/** + * @brief GPIO port B identifier. + */ +#if STM32_HAS_GPIOB || defined(__DOXYGEN__) +#define IOPORT2 GPIOB +#endif + +/** + * @brief GPIO port C identifier. + */ +#if STM32_HAS_GPIOC || defined(__DOXYGEN__) +#define IOPORT3 GPIOC +#endif + +/** + * @brief GPIO port D identifier. + */ +#if STM32_HAS_GPIOD || defined(__DOXYGEN__) +#define IOPORT4 GPIOD +#endif + +/** + * @brief GPIO port E identifier. + */ +#if STM32_HAS_GPIOE || defined(__DOXYGEN__) +#define IOPORT5 GPIOE +#endif + +/** + * @brief GPIO port F identifier. + */ +#if STM32_HAS_GPIOF || defined(__DOXYGEN__) +#define IOPORT6 GPIOF +#endif + +/** + * @brief GPIO port G identifier. + */ +#if STM32_HAS_GPIOG || defined(__DOXYGEN__) +#define IOPORT7 GPIOG +#endif + +/** + * @brief GPIO port H identifier. + */ +#if STM32_HAS_GPIOH || defined(__DOXYGEN__) +#define IOPORT8 GPIOH +#endif + +/** + * @brief GPIO port I identifier. + */ +#if STM32_HAS_GPIOI || defined(__DOXYGEN__) +#define IOPORT9 GPIOI +#endif + +/*===========================================================================*/ +/* Implementation, some of the following macros could be implemented as */ +/* functions, if so please put them in pal_lld.c. */ +/*===========================================================================*/ + +/** + * @brief GPIO ports subsystem initialization. + * + * @notapi + */ +#define pal_lld_init(config) _pal_lld_init(config) + +/** + * @brief Reads an I/O port. + * @details This function is implemented by reading the GPIO IDR register, the + * implementation has no side effects. + * @note This function is not meant to be invoked directly by the application + * code. + * + * @param[in] port port identifier + * @return The port bits. + * + * @notapi + */ +#define pal_lld_readport(port) ((port)->IDR) + +/** + * @brief Reads the output latch. + * @details This function is implemented by reading the GPIO ODR register, the + * implementation has no side effects. + * @note This function is not meant to be invoked directly by the application + * code. + * + * @param[in] port port identifier + * @return The latched logical states. + * + * @notapi + */ +#define pal_lld_readlatch(port) ((port)->ODR) + +/** + * @brief Writes on a I/O port. + * @details This function is implemented by writing the GPIO ODR register, the + * implementation has no side effects. + * + * @param[in] port port identifier + * @param[in] bits bits to be written on the specified port + * + * @notapi + */ +#define pal_lld_writeport(port, bits) ((port)->ODR = (bits)) + +/** + * @brief Sets a bits mask on a I/O port. + * @details This function is implemented by writing the GPIO BSRR register, the + * implementation has no side effects. + * + * @param[in] port port identifier + * @param[in] bits bits to be ORed on the specified port + * + * @notapi + */ +#define pal_lld_setport(port, bits) ((port)->BSRR.H.set = (uint16_t)(bits)) + +/** + * @brief Clears a bits mask on a I/O port. + * @details This function is implemented by writing the GPIO BSRR register, the + * implementation has no side effects. + * + * @param[in] port port identifier + * @param[in] bits bits to be cleared on the specified port + * + * @notapi + */ +#define pal_lld_clearport(port, bits) ((port)->BSRR.H.clear = (uint16_t)(bits)) + +/** + * @brief Writes a group of bits. + * @details This function is implemented by writing the GPIO BSRR register, the + * implementation has no side effects. + * + * @param[in] port port identifier + * @param[in] mask group mask + * @param[in] offset the group bit offset within the port + * @param[in] bits bits to be written. Values exceeding the group + * width are masked. + * + * @notapi + */ +#define pal_lld_writegroup(port, mask, offset, bits) \ + ((port)->BSRR.W = ((~(bits) & (mask)) << (16 + (offset))) | \ + (((bits) & (mask)) << (offset))) + +/** + * @brief Pads group mode setup. + * @details This function programs a pads group belonging to the same port + * with the specified mode. + * + * @param[in] port port identifier + * @param[in] mask group mask + * @param[in] offset group bit offset within the port + * @param[in] mode group mode + * + * @notapi + */ +#define pal_lld_setgroupmode(port, mask, offset, mode) \ + _pal_lld_setgroupmode(port, mask << offset, mode) + +/** + * @brief Writes a logical state on an output pad. + * + * @param[in] port port identifier + * @param[in] pad pad number within the port + * @param[in] bit logical value, the value must be @p PAL_LOW or + * @p PAL_HIGH + * + * @notapi + */ +#define pal_lld_writepad(port, pad, bit) pal_lld_writegroup(port, 1, pad, bit) + +extern const PALConfig pal_default_config; + +#ifdef __cplusplus +extern "C" { +#endif + void _pal_lld_init(const PALConfig *config); + void _pal_lld_setgroupmode(ioportid_t port, + ioportmask_t mask, + iomode_t mode); +#ifdef __cplusplus +} +#endif + +#endif /* HAL_USE_PAL */ + +#endif /* _PAL_LLD_H_ */ + +/** @} */ -- cgit v1.2.3