| /* ---------------------------------------------------------------------------- | |
| * 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 "systick.h" | |
| //------------------------------------------------------------------------------ | |
| /// Configures the SysTick in . | |
| /// \param countEnable Enable SysTick counting. | |
| /// \param reloadValue Value used for tick counter to reload. | |
| /// \param handler Interrupt handler function, 0 to disable interrupt. | |
| //------------------------------------------------------------------------------ | |
| void SysTick_Configure(unsigned char countEnable, | |
| unsigned int reloadValue, | |
| void( *handler )( void )) | |
| { | |
| unsigned int intEnable = handler ? AT91C_NVIC_STICKINT : 0; | |
| // Disable the SysTick & using core source | |
| AT91C_BASE_NVIC->NVIC_STICKCSR = AT91C_NVIC_STICKCLKSOURCE; | |
| // Reset the current value | |
| AT91C_BASE_NVIC->NVIC_STICKCVR &= ~AT91C_NVIC_STICKCURRENT; | |
| // Setup the reload value | |
| AT91C_BASE_NVIC->NVIC_STICKRVR = reloadValue; | |
| // Enable the SysTick | |
| AT91C_BASE_NVIC->NVIC_STICKCSR = AT91C_NVIC_STICKCLKSOURCE | |
| | AT91C_NVIC_STICKENABLE | |
| | intEnable; | |
| } | |