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Corwin Perren
b300c76103
These are all design documents that I thought I had lost. It's may make me cringe, but it's still cool to use it to see how far I've come.
434 lines
15 KiB
C
434 lines
15 KiB
C
/* This file has been prepared for Doxygen automatic documentation generation.*/
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/*! \file *********************************************************************
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*
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* \brief XMEGA Timer/Counter driver source file.
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*
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* This file contains the function implementations the XMEGA Timer/Counter
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* driver.
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*
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* The driver is not intended for size and/or speed critical code, since
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* most functions are just a few lines of code, and the function call
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* overhead would decrease code performance. The driver is intended for
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* rapid prototyping and documentation purposes for getting started with
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* the XMEGA Timer/Counter module.
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*
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* For size and/or speed critical code, it is recommended to copy the
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* function contents directly into your application instead of making
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* a function call.
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*
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* Several functions use the following construct:
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* "some_register = ... | (some_parameter ? SOME_BIT_bm : 0) | ..."
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* Although the use of the ternary operator ( if ? then : else ) is discouraged,
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* in some occasions the operator makes it possible to write pretty clean and
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* neat code. In this driver, the construct is used to set or not set a
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* configuration bit based on a boolean input parameter, such as
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* the "some_parameter" in the example above.
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*
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* \par Application note:
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* AVR1306: Using the XMEGA Timer/Counter
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*
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* \par Documentation
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* For comprehensive code documentation, supported compilers, compiler
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* settings and supported devices see readme.html
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*
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* \author
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* Atmel Corporation: http://www.atmel.com \n
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* Support email: avr@atmel.com
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*
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* $Revision: 1569 $
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* $Date: 2008-04-22 13:03:43 +0200 (ti, 22 apr 2008) $ \n
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*
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* Copyright (c) 2008, Atmel Corporation All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3. The name of ATMEL may not be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY AND
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* SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*****************************************************************************/
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#include "avr_compiler.h"
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#include "TC_driver.h"
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/*! \brief Configures clock source for the Timer/Counter 0.
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*
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* This function clears the old clock source setting of the Timer/Counter and
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* sets a new clock source according to the clockSelection parameter.
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*
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* \param tc Timer/Counter module instance.
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* \param clockSelection Timer/Counter clock source setting.
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*/
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void TC0_ConfigClockSource( volatile TC0_t * tc, TC_CLKSEL_t clockSelection )
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{
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tc->CTRLA = ( tc->CTRLA & ~TC0_CLKSEL_gm ) | clockSelection;
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}
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/*! \brief Configures clock source for the Timer/Counter 1.
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*
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* This function clears the old clock source setting of the Timer/Counter and
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* sets a new clock source according to the clockSelection parameter.
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*
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* \param tc Timer/Counter module instance.
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* \param clockSelection Timer/Counter clock source setting.
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*/
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void TC1_ConfigClockSource( volatile TC1_t * tc, TC_CLKSEL_t clockSelection )
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{
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tc->CTRLA = ( tc->CTRLA & ~TC1_CLKSEL_gm ) | clockSelection;
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}
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/*! \brief Configures the Waveform Generation Mode for the Timer/Counter 0.
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*
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* This function clears the old WGM setting of the Timer/Counter and sets a
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* new WGM setting according to the wgm parameter.
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*
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* \param tc Timer/Counter module instance.
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* \param wgm Waveform generation mode.
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*/
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void TC0_ConfigWGM( volatile TC0_t * tc, TC_WGMODE_t wgm )
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{
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tc->CTRLB = ( tc->CTRLB & ~TC0_WGMODE_gm ) | wgm;
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}
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/*! \brief Configures the Waveform Generation Mode for the Timer/Counter 1.
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*
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* This function clears the old WGM setting of the Timer/Counter and sets a
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* new WGM setting according to the wgm parameter.
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*
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* \param tc Timer/Counter module instance.
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* \param wgm Waveform generation mode.
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*/
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void TC1_ConfigWGM( volatile TC1_t * tc, TC_WGMODE_t wgm )
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{
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tc->CTRLB = ( tc->CTRLB & ~TC1_WGMODE_gm ) | wgm;
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}
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/*! \brief Configures the Timer/Counter 0 for input capture operation.
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*
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* This function sets the Timer/Counter in input capture mode and selects
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* the event lines that will trigger the individual input capture channels.
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*
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* \note Output compare operation is disabled when input capture operation is
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* enabled.
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*
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* \param tc Timer/Counter module instance.
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* \param eventSource Event source selection.
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*/
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void TC0_ConfigInputCapture( volatile TC0_t * tc, TC_EVSEL_t eventSource )
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{
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tc->CTRLD = ( tc->CTRLD & ~( TC0_EVSEL_gm | TC0_EVACT_gm ) ) |
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eventSource |
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TC_EVACT_CAPT_gc;
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}
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/*! \brief Configures the Timer/Counter 1 for input capture operation.
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*
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* This function sets the Timer/Counter in input capture mode and selects
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* the event lines that will trigger the individual input capture channels.
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*
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* \note Output compare operation is disabled when input capture operation is
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* enabled.
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*
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* \param tc Timer/Counter module instance.
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* \param eventSource Event source selection.
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*/
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void TC1_ConfigInputCapture( volatile TC1_t * tc, TC_EVSEL_t eventSource )
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{
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tc->CTRLD = ( tc->CTRLD & ~( TC1_EVSEL_gm | TC1_EVACT_gm ) ) |
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eventSource |
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TC_EVACT_CAPT_gc;
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}
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/*! \brief Enables compare/capture channels for Timer/Counter 0.
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*
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* This function enables compare/capture channels according to the supplied
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* enableMask. The enableMask can be obtained by ORing together the symbols
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* - TC0_CCAEN_bm
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* - TC0_CCBEN_bm
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* - TC0_CCCEN_bm
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* - TC0_CCDEN_bm
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*
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* Example: TC0_EnableCCChannels( &TCC0, TC0_CCAEN_bm | TC0_CCCEN_bm ) will
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* enable channels A and C.
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*
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* \note No capture/compare channels are disabled by calling this function.
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* Disabling is done by calling \ref TC0_DisableCCChannels.
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*
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* \param tc Timer/Counter module instance.
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* \param enableMask Mask of channels to enable.
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*/
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void TC0_EnableCCChannels( volatile TC0_t * tc, uint8_t enableMask )
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{
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/* Make sure only CCxEN bits are set in enableMask. */
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enableMask &= ( TC0_CCAEN_bm | TC0_CCBEN_bm | TC0_CCCEN_bm | TC0_CCDEN_bm );
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/* Enable channels. */
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tc->CTRLB |= enableMask;
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}
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/*! \brief Enables compare/capture channels for Timer/Counter 1.
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*
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* This function enables compare/capture channels according to the supplied
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* enableMask. The enableMask can be obtained by ORing together the symbols
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* - TC1_CCAEN_bm
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* - TC1_CCBEN_bm
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*
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* Example: TC1_EnableCCChannels( &TCC1, TC1_CCAEN_bm | TC1_CCBEN_bm ) will
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* enable channels A and B.
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*
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* \note No capture/compare channels are disabled by calling this function.
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* Disabling is done by calling \ref TC1_DisableCCChannels.
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*
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* \param tc Timer/Counter module instance.
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* \param enableMask Mask of channels to enable.
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*/
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void TC1_EnableCCChannels( volatile TC1_t * tc, uint8_t enableMask )
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{
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/* Make sure only CCxEN bits are set in enableMask. */
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enableMask &= ( TC1_CCAEN_bm | TC1_CCBEN_bm );
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/* Enable channels. */
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tc->CTRLB |= enableMask;
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}
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/*! \brief Disables compare/capture channels on Timer/Counter 0.
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*
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* This function disables compare/capture channels according to the supplied
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* disableMask. The disableMask can be obtained by ORing together the symbols
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* - TC0_CCAEN_bm
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* - TC0_CCBEN_bm
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* - TC0_CCCEN_bm
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* - TC0_CCDEN_bm
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*
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* Example: TC0_DisableCCChannels( &TCC0, TC0_CCAEN_bm | TC0_CCCEN_bm ) will
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* disable channels A and C.
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*
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* \param tc Timer/Counter module instance.
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* \param disableMask Mask of channels to disable.
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*/
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void TC0_DisableCCChannels( volatile TC0_t * tc, uint8_t disableMask )
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{
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/* Make sure only CCxEN bits are set in disableMask. */
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disableMask &= ( TC0_CCAEN_bm | TC0_CCBEN_bm | TC0_CCCEN_bm | TC0_CCDEN_bm );
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/* Disable channels. */
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tc->CTRLB &= ~disableMask;
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}
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/*! \brief Disables compare/capture channels on Timer/Counter 1.
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*
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* This function disables compare/capture channels according to the supplied
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* disableMask. The disableMask can be obtained by ORing together the symbols
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* - TC1_CCAEN_bm
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* - TC1_CCBEN_bm
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*
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* Example: TC1_DisableCCChannels( &TCC1, TC1_CCAEN_bm | TC1_CCBEN_bm ) will
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* disable channels A and B.
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*
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* \param tc Timer/Counter module instance.
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* \param disableMask Mask of channels to disable.
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*/
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void TC1_DisableCCChannels( volatile TC1_t * tc, uint8_t disableMask )
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{
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/* Make sure only CCxEN bits are set in disableMask. */
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disableMask &= ( TC1_CCAEN_bm | TC1_CCBEN_bm );
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/* Disable channels. */
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tc->CTRLB &= ~disableMask;
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}
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/*! \brief Sets the overflow interrupt level.
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*
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* This function sets the overflow interrupt level of this Timer/Counter 0.
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*
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* \param tc Timer/Counter module instance.
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* \param intLevel New overflow interrupt level.
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*/
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void TC0_SetOverflowIntLevel( volatile TC0_t * tc, TC_OVFINTLVL_t intLevel )
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{
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tc->INTCTRLA = ( tc->INTCTRLA & ~TC0_OVFINTLVL_gm ) | intLevel;
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}
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/*! \brief Sets the overflow interrupt level.
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*
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* This function sets the overflow interrupt level of this Timer/Counter 1.
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*
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* \param tc Timer/Counter module instance.
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* \param intLevel New overflow interrupt level.
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*/
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void TC1_SetOverflowIntLevel( volatile TC1_t * tc, TC_OVFINTLVL_t intLevel )
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{
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tc->INTCTRLA = ( tc->INTCTRLA & ~TC1_OVFINTLVL_gm ) | intLevel;
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}
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/*! \brief Sets the Error interrupt level.
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*
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* This function sets the overflow interrupt level of this Timer/Counter 0.
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*
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* \param tc Timer/Counter module instance.
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* \param intLevel New error interrupt level.
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*/
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void TC0_SetErrorIntLevel( volatile TC0_t * tc, TC_ERRINTLVL_t intLevel )
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{
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tc->INTCTRLA = ( tc->INTCTRLA & ~TC0_ERRINTLVL_gm ) | intLevel;
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}
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/*! \brief Sets the Error interrupt level.
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*
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* This function sets the overflow interrupt level of this Timer/Counter 1.
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*
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* \param tc Timer/Counter module instance.
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* \param intLevel New error interrupt level.
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*/
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void TC1_SetErrorIntLevel( volatile TC1_t * tc, TC_ERRINTLVL_t intLevel )
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{
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tc->INTCTRLA = ( tc->INTCTRLA & ~TC1_ERRINTLVL_gm ) | intLevel;
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}
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/*! \brief Sets the interrupt level for compare/capture channel A interrupt.
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*
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* This function sets the interrupt level for compare/capture channel A
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* interrupt in Timer/Counter 0.
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*
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* \param tc Timer/Counter module instance.
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* \param intLevel New compare/capture channel A interrupt level.
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*/
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void TC0_SetCCAIntLevel( volatile TC0_t * tc, TC_CCAINTLVL_t intLevel )
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{
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tc->INTCTRLB = ( tc->INTCTRLB & ~TC0_CCAINTLVL_gm ) | intLevel;
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}
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/*! \brief Sets the interrupt level for compare/capture channel A interrupt.
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*
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* This function sets the interrupt level for compare/capture channel A
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* interrupt in Timer/Counter 1.
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*
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* \param tc Timer/Counter module instance.
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* \param intLevel New compare/capture channel A interrupt level.
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*/
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void TC1_SetCCAIntLevel( volatile TC1_t * tc, TC_CCAINTLVL_t intLevel )
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{
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tc->INTCTRLB = ( tc->INTCTRLB & ~TC1_CCAINTLVL_gm ) | intLevel;
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}
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/*! \brief Sets the interrupt level for compare/capture channel B interrupt.
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*
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* This function sets the interrupt level for compare/capture channel B
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* interrupt in Timer/Counter 0.
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*
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* \param tc Timer/Counter module instance.
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* \param intLevel New compare/capture channel B interrupt level.
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*/
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void TC0_SetCCBIntLevel( volatile TC0_t * tc, TC_CCBINTLVL_t intLevel )
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{
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tc->INTCTRLB = ( tc->INTCTRLB & ~TC0_CCBINTLVL_gm ) | intLevel;
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}
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/*! \brief Sets the interrupt level for compare/capture channel B interrupt.
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*
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* This function sets the interrupt level for compare/capture channel B
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* interrupt in Timer/Counter 1.
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*
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* \param tc Timer/Counter module instance.
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* \param intLevel New compare/capture channel B interrupt level.
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*/
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void TC1_SetCCBIntLevel( volatile TC1_t * tc, TC_CCBINTLVL_t intLevel )
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{
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tc->INTCTRLB = ( tc->INTCTRLB & ~TC1_CCBINTLVL_gm ) | intLevel;
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}
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/*! \brief Sets the interrupt level for compare/capture channel C interrupt.
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*
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* This function sets the interrupt level for compare/capture channel C
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* interrupt in Timer/Counter 0.
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*
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* \param tc Timer/Counter module instance.
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* \param intLevel New compare/capture channel A interrupt level.
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*/
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void TC0_SetCCCIntLevel( volatile TC0_t * tc, TC_CCCINTLVL_t intLevel )
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{
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tc->INTCTRLB = ( tc->INTCTRLB & ~TC0_CCCINTLVL_gm ) | intLevel;
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}
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/*! \brief Sets the interrupt level for compare/capture channel D interrupt.
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*
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* This function sets the interrupt level for compare/capture channel D
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* interrupt in Timer/Counter 0.
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*
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* \param tc Timer/Counter module instance.
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* \param intLevel New compare/capture channel A interrupt level.
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*/
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void TC0_SetCCDIntLevel( volatile TC0_t * tc, TC_CCDINTLVL_t intLevel )
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{
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tc->INTCTRLB = ( tc->INTCTRLB & ~TC0_CCDINTLVL_gm ) | intLevel;
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}
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/*! \brief Resets the Timer/Counter 0.
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*
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* This function will reset the Timer/Counter. After calling this function,
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* the Timer/Counter will be in the same state as it would after a full
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* reset of the device.
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*
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* \param tc Timer/Counter 0 module instance.
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*/
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void TC0_Reset( volatile TC0_t * tc )
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{
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/* TC must be turned off before a Reset command. */
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tc->CTRLA = ( tc->CTRLA & ~TC0_CLKSEL_gm ) | TC_CLKSEL_OFF_gc;
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/* Issue Reset command. */
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tc->CTRLFSET = TC_CMD_RESET_gc;
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}
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/*! \brief Resets the Timer/Counter 1.
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*
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* This function will reset the Timer/Counter. After calling this function,
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* the Timer/Counter will be in the same state as it would after a full
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* reset of the device.
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*
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* \param tc Timer/Counter 1 module instance.
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*/
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void TC1_Reset( volatile TC1_t * tc )
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{
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/* TC must be turned off before a Reset command. */
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tc->CTRLA = ( tc->CTRLA & ~TC1_CLKSEL_gm ) | TC_CLKSEL_OFF_gc;
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/* Issue Reset command. */
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tc->CTRLFSET = TC_CMD_RESET_gc;
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}
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