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Diffstat (limited to 'c/src/lib/libbsp/arm/atsam/libraries/libchip/source/rtt.c')
| -rw-r--r-- | c/src/lib/libbsp/arm/atsam/libraries/libchip/source/rtt.c | 134 |
1 files changed, 0 insertions, 134 deletions
diff --git a/c/src/lib/libbsp/arm/atsam/libraries/libchip/source/rtt.c b/c/src/lib/libbsp/arm/atsam/libraries/libchip/source/rtt.c deleted file mode 100644 index 8c6ae89e78..0000000000 --- a/c/src/lib/libbsp/arm/atsam/libraries/libchip/source/rtt.c +++ /dev/null @@ -1,134 +0,0 @@ -/* ---------------------------------------------------------------------------- */ -/* Atmel Microcontroller Software Support */ -/* SAM Software Package License */ -/* ---------------------------------------------------------------------------- */ -/* Copyright (c) 2015, Atmel Corporation */ -/* */ -/* All rights reserved. */ -/* */ -/* Redistribution and use in source and binary forms, with or without */ -/* modification, are permitted provided that the following condition is met: */ -/* */ -/* - Redistributions of source code must retain the above copyright notice, */ -/* this list of conditions and the disclaimer below. */ -/* */ -/* Atmel's name may not be used to endorse or promote products derived from */ -/* this software without specific prior written permission. */ -/* */ -/* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR */ -/* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF */ -/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE */ -/* DISCLAIMED. IN NO EVENT SHALL ATMEL 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 rtt_module Working with RTT - * \ingroup peripherals_module - * The RTT driver provides the interface to configure and use the RTT - * peripheral. - * - * The Real-time Timer is used to count elapsed seconds.\n - * This timer is clocked by the 32kHz system clock divided by a programmable - * 16-bit value. To be accurate, it is better to use an - * external 32kHz crystal instead of the internal 32kHz RC.\n - * - * To count elapsed seconds, the user could follow these few steps: - * <ul> - * <li>Programming PTPRES in RTT_MR to feeding the timer with a 1Hz signal.</li> - * <li>Writing the bit RTTRST in RTT_MR to restart the timer with new settings. - * </li> - * </ul> - * - * An alarm can be set to happen on second by setting alarm value in RTT_AR. - * Alarm occurrence can be detected by polling or interrupt. - * - * For more accurate information, please look at the RTT section of the - * Datasheet. - * - * Related files :\n - * \ref rtt.c\n - * \ref rtt.h.\n - */ -/*@{*/ -/*@}*/ - -/** - * \file - * - * Implementation of Real Time Timer (RTT) controller. - * - */ - -/*---------------------------------------------------------------------------- - * Headers - *----------------------------------------------------------------------------*/ -#include "chip.h" - -#include <assert.h> - -/*---------------------------------------------------------------------------- - * Exported functions - *----------------------------------------------------------------------------*/ - -/** - * \brief Changes the prescaler value of the given RTT and restarts it. - * - * \note This function disables RTT interrupt sources. - * - * \param rtt Pointer to a Rtt instance. - * \param prescaler Prescaler value for the RTT. - */ -void RTT_SetPrescaler(Rtt *rtt, uint16_t prescaler) -{ - rtt->RTT_MR = (prescaler | RTT_MR_RTTRST); -} - -/** - * \brief Returns the current value of the RTT timer value. - * - * \param rtt Pointer to a Rtt instance. - */ -uint32_t RTT_GetTime(Rtt *rtt) -{ - return rtt->RTT_VR; -} - -/** - * \brief Enables the specified RTT interrupt sources. - * - * \param rtt Pointer to a Rtt instance. - * \param sources Bitmask of interrupts to enable. - */ -void RTT_EnableIT(Rtt *rtt, uint32_t sources) -{ - assert((sources & 0x0004FFFF) == 0); - rtt->RTT_MR |= sources; -} - -/** - * \brief Returns the status register value of the given RTT. - * - * \param rtt Pointer to an Rtt instance. - */ -uint32_t RTT_GetStatus(Rtt *rtt) -{ - return rtt->RTT_SR; -} - -/** - * \brief Configures the RTT to generate an alarm at the given time. - * - * \param pRtt Pointer to an Rtt instance. - * \param time Alarm time. - */ -void RTT_SetAlarm(Rtt *pRtt, uint32_t time) -{ - assert(time > 0); - - pRtt->RTT_AR = time - 1; -} |