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- /* time-STM32F2.c
- *
- * Copyright (C) 2006-2013 wolfSSL Inc.
- *
- * This file is part of CyaSSL.
- *
- * CyaSSL is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * CyaSSL is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
- */
-
- #ifdef HAVE_CONFIG_H
- #include <config.h>
- #endif
- #include "time.h"
- #define PERIPH_BASE ((uint32_t)0x40000000)
- /*-----------------------------------------------------------------------------
- * initialize RTC
- *----------------------------------------------------------------------------*/
- #include "stm32f2xx.h"
- #define assert_param(a)
- #if 0
- #define RTC_RSF_MASK ((uint32_t)0xFFFFFF5F)
- #define SYNCHRO_TIMEOUT ((uint32_t) 0x00008000)
- #define Bcd2ToByte(v) \
- ((((uint8_t)(v & (uint8_t)0xF0) >> (uint8_t)0x4) * 10) + (v & (uint8_t)0x0F))
- #define RTC_TR_RESERVED_MASK ((uint32_t)0x007F7F7F)
- #define RTC_TR_MNT ((uint32_t)0x00007000)
- #define RTC_TR_MNU ((uint32_t)0x00000F00)
- #define PWR_OFFSET (PWR_BASE - PERIPH_BASE)
- #define CR_OFFSET (PWR_OFFSET + 0x00)
- #define DBP_BitNumber 0x08
- #define CR_DBP_BB (PERIPH_BB_BASE + (CR_OFFSET * 32) + (DBP_BitNumber * 4))
- #define RTC_INIT_MASK ((uint32_t)0xFFFFFFFF)
- #define INITMODE_TIMEOUT ((uint32_t) 0x00010000)
- #endif
- /*-----------------------------------------------------------------------------
- * initialize TIM
- *----------------------------------------------------------------------------*/
- #define RCC_APB1Periph_TIM2 ((uint32_t)0x00000001)
- void init_time(void)
- {
- uint16_t tmpcr1 = 0;
- ((uint32_t *)RCC)[0x10] |= RCC_APB1Periph_TIM2 ;
- tmpcr1 = TIM2->CR1 ;
- tmpcr1 &= (uint16_t) (~(((uint16_t)0x0010) | ((uint16_t)0x0060) ));
- /* CR1 &= ~(TIM_CR1_DIR | TIM_CR1_CMS) */
- tmpcr1 |= (uint16_t)0x0000 ; /* CR1 |= TIM_CounterMode_Up */
- TIM2->CR1= tmpcr1 ;
- TIM2->ARR = 0xffffffff ; /* ARR= TIM_Period */
- TIM2->PSC = 60 ; /* PSC = TIM_Prescaler */
- TIM2->EGR = ((uint16_t)0x0001) ; /* EGR = TIM_PSCReloadMode_Immediate */
- *(uint16_t *)(PERIPH_BASE+0x0) |=((uint16_t)0x0001) ;
- /* TIM_Cmd(TIM2, ENABLE) ; */
- }
- double current_time()
- {
- return ((double)TIM2->CNT/1000000.0) ;
- }
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