/****************************************************************************** * Filename: timer_doc.h * Revised: 2016-03-30 13:03:59 +0200 (Wed, 30 Mar 2016) * Revision: 45971 * * Copyright (c) 2015 - 2017, Texas Instruments Incorporated * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * 1) Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * 2) Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * 3) Neither the name of the ORGANIZATION nor the names of its contributors may * be used to endorse or promote products derived from this software without * specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * ******************************************************************************/ //! \addtogroup timer_api //! @{ //! \section sec_timer Introduction //! //! The timer API provides a set of functions for using the general-purpose timer module. //! //! The timer module contains four timer blocks with the following functional options: //! - Operating modes: //! - 16-bit with 8-bit prescaler or 32-bit programmable one-shot timer. //! - 16-bit with 8-bit prescaler or 32-bit programmable periodic timer. //! - Two capture compare PWM pins (CCP) for each 32-bit timer. //! - 24-bit input-edge count or 24-bit time-capture modes. //! - 24-bit PWM mode with software-programmable output inversion of the PWM signal. //! - Count up or down. //! - Daisy chaining of timer modules allows a single timer to initiate multiple timing events. //! - Timer synchronization allows selected timers to start counting on the same clock cycle. //! - User-enabled stalling when the System CPU asserts a CPU Halt flag during debug. //! - Ability to determine the elapsed time between the assertion of the timer interrupt and //! entry into the interrupt service routine. //! //! Each timer block provides two half-width timers/counters that can be configured //! to operate independently as timers or event counters or to operate as a combined //! full-width timer. //! The timers provide 16-bit half-width timers and a 32-bit full-width timer. //! For the purposes of this API, the two //! half-width timers provided by a timer block are referred to as TimerA and //! TimerB, and the full-width timer is referred to as TimerA. //! //! When in half-width mode, the timer can also be configured for event capture or //! as a pulse width modulation (PWM) generator. When configured for event //! capture, the timer acts as a counter. It can be configured to count either the //! time between events or the events themselves. The type of event //! being counted can be configured as a positive edge, a negative edge, or both //! edges. When a timer is configured as a PWM generator, the input signal used to //! capture events becomes an output signal, and the timer drives an //! edge-aligned pulse onto that signal. //! //! Control is also provided over interrupt sources and events. Interrupts can be //! generated to indicate that an event has been captured, or that a certain number //! of events have been captured. Interrupts can also be generated when the timer //! has counted down to 0 or when the timer matches a certain value. //! //! Timer configuration is handled by \ref TimerConfigure(), which performs the high //! level setup of the timer module; that is, it is used to set up full- or //! half-width modes, and to select between PWM, capture, and timer operations. //! //! \section sec_timer_api API //! //! The API functions can be grouped like this: //! //! Functions to perform timer control: //! - \ref TimerConfigure() //! - \ref TimerEnable() //! - \ref TimerDisable() //! - \ref TimerLevelControl() //! - \ref TimerWaitOnTriggerControl() //! - \ref TimerEventControl() //! - \ref TimerStallControl() //! - \ref TimerIntervalLoadMode() //! - \ref TimerMatchUpdateMode() //! - \ref TimerCcpCombineDisable() //! - \ref TimerCcpCombineEnable() //! //! Functions to manage timer content: //! - \ref TimerLoadSet() //! - \ref TimerLoadGet() //! - \ref TimerPrescaleSet() //! - \ref TimerPrescaleGet() //! - \ref TimerMatchSet() //! - \ref TimerMatchGet() //! - \ref TimerPrescaleMatchSet() //! - \ref TimerPrescaleMatchGet() //! - \ref TimerValueGet() //! - \ref TimerSynchronize() //! //! Functions to manage the interrupt handler for the timer interrupt: //! - \ref TimerIntRegister() //! - \ref TimerIntUnregister() //! //! The individual interrupt sources within the timer module are managed with: //! - \ref TimerIntEnable() //! - \ref TimerIntDisable() //! - \ref TimerIntStatus() //! - \ref TimerIntClear() //! //! @}