ChibiOS/RT Architecture - Reference Manual - Guides |
00001 /* 00002 ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010 Giovanni Di Sirio. 00003 00004 This file is part of ChibiOS/RT. 00005 00006 ChibiOS/RT is free software; you can redistribute it and/or modify 00007 it under the terms of the GNU General Public License as published by 00008 the Free Software Foundation; either version 3 of the License, or 00009 (at your option) any later version. 00010 00011 ChibiOS/RT is distributed in the hope that it will be useful, 00012 but WITHOUT ANY WARRANTY; without even the implied warranty of 00013 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00014 GNU General Public License for more details. 00015 00016 You should have received a copy of the GNU General Public License 00017 along with this program. If not, see <http://www.gnu.org/licenses/>. 00018 00019 --- 00020 00021 A special exception to the GPL can be applied should you wish to distribute 00022 a combined work that includes ChibiOS/RT, without being obliged to provide 00023 the source code for any proprietary components. See the file exception.txt 00024 for full details of how and when the exception can be applied. 00025 */ 00026 00027 /** 00028 * @file templates/pwm_lld.c 00029 * @brief PWM Driver subsystem low level driver source template. 00030 * 00031 * @addtogroup PWM_LLD 00032 * @{ 00033 */ 00034 00035 #include "ch.h" 00036 #include "hal.h" 00037 00038 #if CH_HAL_USE_PWM || defined(__DOXYGEN__) 00039 00040 /*===========================================================================*/ 00041 /* Driver exported variables. */ 00042 /*===========================================================================*/ 00043 00044 /*===========================================================================*/ 00045 /* Driver local variables. */ 00046 /*===========================================================================*/ 00047 00048 /*===========================================================================*/ 00049 /* Driver local functions. */ 00050 /*===========================================================================*/ 00051 00052 /*===========================================================================*/ 00053 /* Driver interrupt handlers. */ 00054 /*===========================================================================*/ 00055 00056 /*===========================================================================*/ 00057 /* Driver exported functions. */ 00058 /*===========================================================================*/ 00059 00060 /** 00061 * @brief Low level PWM driver initialization. 00062 */ 00063 void pwm_lld_init(void) { 00064 00065 } 00066 00067 /** 00068 * @brief Configures and activates the PWM peripheral. 00069 * 00070 * @param[in] pwmp pointer to the @p PWMDriver object 00071 */ 00072 void pwm_lld_start(PWMDriver *pwmp) { 00073 00074 if (pwmp->pd_state == PWM_STOP) { 00075 /* Clock activation.*/ 00076 } 00077 /* Configuration.*/ 00078 } 00079 00080 /** 00081 * @brief Deactivates the PWM peripheral. 00082 * 00083 * @param[in] pwmp pointer to the @p PWMDriver object 00084 */ 00085 void pwm_lld_stop(PWMDriver *pwmp) { 00086 00087 } 00088 00089 /** 00090 * @brief Determines whatever the PWM channel is already enabled. 00091 * 00092 * @param[in] pwmp pointer to the @p PWMDriver object 00093 * @param[in] channel PWM channel identifier 00094 * @return The PWM channel status. 00095 * @retval FALSE the channel is not enabled. 00096 * @retval TRUE the channel is enabled. 00097 */ 00098 bool_t pwm_lld_is_enabled(PWMDriver *pwmp, pwmchannel_t channel) { 00099 00100 return FALSE; 00101 } 00102 00103 /** 00104 * @brief Enables a PWM channel. 00105 * 00106 * @param[in] pwmp pointer to a @p PWMDriver object 00107 * @param[in] channel PWM channel identifier (0...PWM_CHANNELS-1) 00108 * @param[in] width PWM pulse width as clock pulses number 00109 */ 00110 void pwm_lld_enable_channel(PWMDriver *pwmp, 00111 pwmchannel_t channel, 00112 pwmcnt_t width) { 00113 00114 } 00115 00116 /** 00117 * @brief Disables a PWM channel. 00118 * @details The channel is disabled and its output line returned to the 00119 * idle state. 00120 * 00121 * @param[in] pwmp pointer to a @p PWMDriver object 00122 * @param[in] channel PWM channel identifier (0...PWM_CHANNELS-1) 00123 */ 00124 void pwm_lld_disable_channel(PWMDriver *pwmp, pwmchannel_t channel) { 00125 00126 } 00127 00128 #endif /* CH_HAL_USE_PWM */ 00129 00130 /** @} */