From d17660452ee51c773e8cbb3c4104ec946ba86458 Mon Sep 17 00:00:00 2001 From: gdisirio Date: Sat, 5 Mar 2011 18:35:10 +0000 Subject: GPT driver for LPC11xx (not tested yet). git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@2794 35acf78f-673a-0410-8e92-d51de3d6d3f4 --- os/hal/platforms/LPC11xx/gpt_lld.h | 223 +++++++++++++++++++++++++++++++++++++ 1 file changed, 223 insertions(+) create mode 100644 os/hal/platforms/LPC11xx/gpt_lld.h (limited to 'os/hal/platforms/LPC11xx/gpt_lld.h') diff --git a/os/hal/platforms/LPC11xx/gpt_lld.h b/os/hal/platforms/LPC11xx/gpt_lld.h new file mode 100644 index 000000000..1abc1572e --- /dev/null +++ b/os/hal/platforms/LPC11xx/gpt_lld.h @@ -0,0 +1,223 @@ +/* + ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010 Giovanni Di Sirio. + + This file is part of ChibiOS/RT. + + ChibiOS/RT is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + ChibiOS/RT is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . +*/ + +/** + * @file LPC11xx/gpt_lld.h + * @brief LPC11xx GPT subsystem low level driver header. + * + * @addtogroup GPT + * @{ + */ + +#ifndef _GPT_LLD_H_ +#define _GPT_LLD_H_ + +#if HAL_USE_GPT || defined(__DOXYGEN__) + +/*===========================================================================*/ +/* Driver constants. */ +/*===========================================================================*/ + +/*===========================================================================*/ +/* Driver pre-compile time settings. */ +/*===========================================================================*/ + +/** + * @brief GPT1 driver enable switch. + * @details If set to @p TRUE the support for GPT1 is included. + * @note The default is @p TRUE. + */ +#if !defined(LPC11xx_GPT_USE_CT16B0) || defined(__DOXYGEN__) +#define LPC11xx_GPT_USE_CT16B0 TRUE +#endif + +/** + * @brief GPT2 driver enable switch. + * @details If set to @p TRUE the support for GPT2 is included. + * @note The default is @p TRUE. + */ +#if !defined(LPC11xx_GPT_USE_CT16B1) || defined(__DOXYGEN__) +#define LPC11xx_GPT_USE_CT16B1 TRUE +#endif + +/** + * @brief GPT3 driver enable switch. + * @details If set to @p TRUE the support for GPT3 is included. + * @note The default is @p TRUE. + */ +#if !defined(LPC11xx_GPT_USE_CT32B0) || defined(__DOXYGEN__) +#define LPC11xx_GPT_USE_CT32B0 TRUE +#endif + +/** + * @brief GPT4 driver enable switch. + * @details If set to @p TRUE the support for GPT4 is included. + * @note The default is @p TRUE. + */ +#if !defined(LPC11xx_GPT_USE_CT32B1) || defined(__DOXYGEN__) +#define LPC11xx_GPT_USE_CT32B1 TRUE +#endif + +/** + * @brief GPT1 interrupt priority level setting. + */ +#if !defined(LPC11xx_GPT_CT16B0_IRQ_PRIORITY) || defined(__DOXYGEN__) +#define LPC11xx_GPT_CT16B0_IRQ_PRIORITY 2 +#endif + +/** + * @brief GPT2 interrupt priority level setting. + */ +#if !defined(LPC11xx_GPT_CT16B1_IRQ_PRIORITY) || defined(__DOXYGEN__) +#define LPC11xx_GPT_CT16B1_IRQ_PRIORITY 2 +#endif + +/** + * @brief GPT3 interrupt priority level setting. + */ +#if !defined(LPC11xx_GPT_CT32B0_IRQ_PRIORITY) || defined(__DOXYGEN__) +#define LPC11xx_GPT_CT32B0_IRQ_PRIORITY 2 +#endif + +/** + * @brief GPT4 interrupt priority level setting. + */ +#if !defined(LPC11xx_GPT_CT32B1_IRQ_PRIORITY) || defined(__DOXYGEN__) +#define LPC11xx_GPT_CT32B1_IRQ_PRIORITY 2 +#endif + +/*===========================================================================*/ +/* Derived constants and error checks. */ +/*===========================================================================*/ + +#if !LPC11xx_GPT_USE_CT16B0 && !LPC11xx_GPT_USE_CT16B1 && \ + !LPC11xx_GPT_USE_CT32B0 && !LPC11xx_GPT_USE_CT32B1 +#error "GPT driver activated but no CT peripheral assigned" +#endif + +/*===========================================================================*/ +/* Driver data structures and types. */ +/*===========================================================================*/ + +/** + * @brief GPT frequency type. + */ +typedef uint32_t gptfreq_t; + +/** + * @brief GPT counter type. + */ +typedef uint32_t gptcnt_t; + +/** + * @brief Type of a structure representing a GPT driver. + */ +typedef struct GPTDriver GPTDriver; + +/** + * @brief GPT notification callback type. + * + * @param[in] gptp pointer to a @p GPTDriver object + */ +typedef void (*gptcallback_t)(GPTDriver *gptp); + +/** + * @brief Driver configuration structure. + * @note It could be empty on some architectures. + */ +typedef struct { + /** + * @brief Timer clock in Hz. + * @note The low level can use assertions in order to catch invalid + * frequency specifications. + */ + gptfreq_t frequency; + /** + * @brief Timer callback pointer. + * @note This callback is invoked on GPT counter events. + */ + gptcallback_t callback; + /* End of the mandatory fields.*/ +} GPTConfig; + +/** + * @brief Structure representing a GPT driver. + */ +struct GPTDriver { + /** + * @brief Driver state. + */ + gptstate_t state; + /** + * @brief Current configuration data. + */ + const GPTConfig *config; + /* End of the mandatory fields.*/ + /** + * @brief Timer base clock. + */ + uint32_t clock; + /** + * @brief Pointer to the CTxxBy registers block. + */ + LPC_TMR_TypeDef *tmr; +}; + +/*===========================================================================*/ +/* Driver macros. */ +/*===========================================================================*/ + +/*===========================================================================*/ +/* External declarations. */ +/*===========================================================================*/ + +#if LPC11xx_GPT_USE_CT16B0 && !defined(__DOXYGEN__) +extern GPTDriver GPTD1; +#endif + +#if LPC11xx_GPT_USE_CT16B1 && !defined(__DOXYGEN__) +extern GPTDriver GPTD2; +#endif + +#if LPC11xx_GPT_USE_CT32B0 && !defined(__DOXYGEN__) +extern GPTDriver GPTD3; +#endif + +#if LPC11xx_GPT_USE_CT32B1 && !defined(__DOXYGEN__) +extern GPTDriver GPTD4; +#endif + +#ifdef __cplusplus +extern "C" { +#endif + void gpt_lld_init(void); + void gpt_lld_start(GPTDriver *gptp); + void gpt_lld_stop(GPTDriver *gptp); + void gpt_lld_start_timer(GPTDriver *gptp, gptcnt_t period); + void gpt_lld_stop_timer(GPTDriver *gptp); + void gpt_lld_polled_delay(GPTDriver *gptp, gptcnt_t interval); +#ifdef __cplusplus +} +#endif + +#endif /* HAL_USE_GPT */ + +#endif /* _GPT_LLD_H_ */ + +/** @} */ -- cgit v1.2.3