From 044ad7c3987460ede48ff27afd6bdb0ca05a0432 Mon Sep 17 00:00:00 2001 From: Harald Welte Date: Mon, 4 Jul 2011 20:52:54 +0200 Subject: import at91lib from at91lib_20100901_softpack_1_9_v_1_0_svn_v15011 it's sad to see that atmel doesn't publish their svn repo or has a centralized location or even puts proper version/release info into the library itself --- peripherals/rtt/rtt.c | 93 +++++++++++++++++++++++++++++++++++++++++++++++++ peripherals/rtt/rtt.dir | 39 +++++++++++++++++++++ peripherals/rtt/rtt.h | 76 ++++++++++++++++++++++++++++++++++++++++ 3 files changed, 208 insertions(+) create mode 100644 peripherals/rtt/rtt.c create mode 100644 peripherals/rtt/rtt.dir create mode 100644 peripherals/rtt/rtt.h (limited to 'peripherals/rtt') diff --git a/peripherals/rtt/rtt.c b/peripherals/rtt/rtt.c new file mode 100644 index 0000000..5322108 --- /dev/null +++ b/peripherals/rtt/rtt.c @@ -0,0 +1,93 @@ +/* ---------------------------------------------------------------------------- + * ATMEL Microcontroller Software Support + * ---------------------------------------------------------------------------- + * Copyright (c) 2008, Atmel Corporation + * + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are 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. + * ---------------------------------------------------------------------------- + */ + +//------------------------------------------------------------------------------ +// Headers +//------------------------------------------------------------------------------ + +#include "rtt.h" +#include + +//------------------------------------------------------------------------------ +// Exported functions +//------------------------------------------------------------------------------ + +//------------------------------------------------------------------------------ +/// Changes the prescaler value of the given RTT and restarts it. This function +/// disables RTT interrupt sources. +/// \param rtt Pointer to a AT91S_RTTC instance. +/// \param prescaler Prescaler value for the RTT. +//------------------------------------------------------------------------------ +void RTT_SetPrescaler(AT91S_RTTC *rtt, unsigned short prescaler) +{ + rtt->RTTC_RTMR = (prescaler | AT91C_RTTC_RTTRST); +} + +//------------------------------------------------------------------------------ +/// Returns the current value of the RTT timer value. +/// \param rtt Pointer to a AT91S_RTTC instance. +//------------------------------------------------------------------------------ +unsigned int RTT_GetTime(AT91S_RTTC *rtt) +{ + return rtt->RTTC_RTVR; +} + +//------------------------------------------------------------------------------ +/// Enables the specified RTT interrupt sources. +/// \param rtt Pointer to a AT91S_RTTC instance. +/// \param sources Bitmask of interrupts to enable. +//------------------------------------------------------------------------------ +void RTT_EnableIT(AT91S_RTTC *rtt, unsigned int sources) +{ + ASSERT((sources & 0x0004FFFF) == 0, + "RTT_EnableIT: Wrong sources value.\n\r"); + rtt->RTTC_RTMR |= sources; +} + +//------------------------------------------------------------------------------ +/// Returns the status register value of the given RTT. +/// \param rtt Pointer to an AT91S_RTTC instance. +//------------------------------------------------------------------------------ +unsigned int RTT_GetStatus(AT91S_RTTC *rtt) +{ + return rtt->RTTC_RTSR; +} + +//------------------------------------------------------------------------------ +/// Configures the RTT to generate an alarm at the given time. +/// \param pRtt Pointer to an AT91S_RTTC instance. +/// \param time Alarm time. +//------------------------------------------------------------------------------ +void RTT_SetAlarm(AT91S_RTTC *pRtt, unsigned int time) +{ + SANITY_CHECK(time > 0); + + pRtt->RTTC_RTAR = time - 1; +} + diff --git a/peripherals/rtt/rtt.dir b/peripherals/rtt/rtt.dir new file mode 100644 index 0000000..1f91775 --- /dev/null +++ b/peripherals/rtt/rtt.dir @@ -0,0 +1,39 @@ +/* ---------------------------------------------------------------------------- + * ATMEL Microcontroller Software Support + * ---------------------------------------------------------------------------- + * Copyright (c) 2008, Atmel Corporation + * + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are 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. + * ---------------------------------------------------------------------------- + */ + +//------------------------------------------------------------------------------ +/// \dir +/// !!!Purpose +/// +/// The #rtt# directory stores a collection of basic APIs to build Real Time Timer +/// applications with Atmel AT91 microcontrollers. +/// +/// +//------------------------------------------------------------------------------ + diff --git a/peripherals/rtt/rtt.h b/peripherals/rtt/rtt.h new file mode 100644 index 0000000..54843c4 --- /dev/null +++ b/peripherals/rtt/rtt.h @@ -0,0 +1,76 @@ +/* ---------------------------------------------------------------------------- + * ATMEL Microcontroller Software Support + * ---------------------------------------------------------------------------- + * Copyright (c) 2008, Atmel Corporation + * + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are 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. + * ---------------------------------------------------------------------------- + */ + +//----------------------------------------------------------------------------- +/// \unit +/// +/// !Purpose +/// +/// Implementation of RTT Real Time Timer controller. +/// +/// !Contents +/// +/// Please refer to the list of functions in the #Overview# tab of this unit +/// for more detailed information. +//----------------------------------------------------------------------------- + + +#ifndef RTT_H +#define RTT_H + +//------------------------------------------------------------------------------ +// Headers +//------------------------------------------------------------------------------ + +#include + +//------------------------------------------------------------------------------ +// Definitions +//------------------------------------------------------------------------------ + +#ifndef AT91C_BASE_RTTC + #define AT91C_BASE_RTTC AT91C_BASE_RTTC0 +#endif + +//------------------------------------------------------------------------------ +// Exported functions +//------------------------------------------------------------------------------ + +extern void RTT_SetPrescaler(AT91S_RTTC *rtt, unsigned short prescaler); + +extern unsigned int RTT_GetTime(AT91S_RTTC *rtt); + +extern void RTT_EnableIT(AT91S_RTTC *rtt, unsigned int sources); + +extern unsigned int RTT_GetStatus(AT91S_RTTC *rtt); + +extern void RTT_SetAlarm(AT91S_RTTC *pRtt, unsigned int time); + +#endif //#ifndef RTT_H + -- cgit v1.2.3