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Dependents:   MX106-finaltest

Fork of mbed-src by mbed official

targets/hal/TARGET_STM/TARGET_NUCLEO_F103RB/sleep.c@174:8bb9f3a33240, 2014-04-29 (annotated)

Committer:
mbed_official
Date:
Tue Apr 29 11:15:07 2014 +0100
Revision:
174:8bb9f3a33240
Parent:
139:e3413eddde57
Child:
402:09075a3b15e3
Synchronized with git revision 5bf985ebc651a2c31cefabd9d62c51dc465ef60a



Full URL: https://github.com/mbedmicro/mbed/commit/5bf985ebc651a2c31cefabd9d62c51dc465ef60a/



[NUCLEO_L152RE/F103RB] Add LSE configuration for RTC

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 60:142c6c6f5949 1 /* mbed Microcontroller Library
mbed_official 70:c1fbde68b492 2 *******************************************************************************
mbed_official 70:c1fbde68b492 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 70:c1fbde68b492 4 * All rights reserved.
mbed_official 60:142c6c6f5949 5 *
mbed_official 70:c1fbde68b492 6 * Redistribution and use in source and binary forms, with or without
mbed_official 70:c1fbde68b492 7 * modification, are permitted provided that the following conditions are met:
mbed_official 60:142c6c6f5949 8 *
mbed_official 70:c1fbde68b492 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 70:c1fbde68b492 10 * this list of conditions and the following disclaimer.
mbed_official 70:c1fbde68b492 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 70:c1fbde68b492 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 70:c1fbde68b492 13 * and/or other materials provided with the distribution.
mbed_official 70:c1fbde68b492 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 70:c1fbde68b492 15 * may be used to endorse or promote products derived from this software
mbed_official 70:c1fbde68b492 16 * without specific prior written permission.
mbed_official 60:142c6c6f5949 17 *
mbed_official 70:c1fbde68b492 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 70:c1fbde68b492 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 70:c1fbde68b492 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 70:c1fbde68b492 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 70:c1fbde68b492 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 70:c1fbde68b492 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 70:c1fbde68b492 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 70:c1fbde68b492 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 70:c1fbde68b492 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 70:c1fbde68b492 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 70:c1fbde68b492 28 *******************************************************************************
mbed_official 60:142c6c6f5949 29 */
mbed_official 60:142c6c6f5949 30 #include "sleep_api.h"
mbed_official 174:8bb9f3a33240 31
mbed_official 174:8bb9f3a33240 32 #if DEVICE_SLEEP
mbed_official 174:8bb9f3a33240 33
mbed_official 60:142c6c6f5949 34 #include "cmsis.h"
mbed_official 60:142c6c6f5949 35
mbed_official 174:8bb9f3a33240 36 void sleep(void) {
mbed_official 84:f54042cbc282 37 // Disable us_ticker update interrupt
mbed_official 84:f54042cbc282 38 TIM_ITConfig(TIM1, TIM_IT_Update, DISABLE);
mbed_official 174:8bb9f3a33240 39
mbed_official 60:142c6c6f5949 40 SCB->SCR = 0; // Normal sleep mode for ARM core
mbed_official 60:142c6c6f5949 41 __WFI();
mbed_official 174:8bb9f3a33240 42
mbed_official 84:f54042cbc282 43 // Re-enable us_ticker update interrupt
mbed_official 174:8bb9f3a33240 44 TIM_ITConfig(TIM1, TIM_IT_Update, ENABLE);
mbed_official 60:142c6c6f5949 45 }
mbed_official 60:142c6c6f5949 46
mbed_official 174:8bb9f3a33240 47 void deepsleep(void) {
mbed_official 84:f54042cbc282 48 // Disable us_ticker update interrupt
mbed_official 84:f54042cbc282 49 TIM_ITConfig(TIM1, TIM_IT_Update, DISABLE);
mbed_official 174:8bb9f3a33240 50
mbed_official 60:142c6c6f5949 51 // Enable PWR clock
mbed_official 60:142c6c6f5949 52 RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE);
mbed_official 174:8bb9f3a33240 53
mbed_official 60:142c6c6f5949 54 // Request to enter STOP mode with regulator in low power mode
mbed_official 84:f54042cbc282 55 PWR_EnterSTOPMode(PWR_Regulator_LowPower, PWR_STOPEntry_WFI);
mbed_official 84:f54042cbc282 56
mbed_official 139:e3413eddde57 57 // After wake-up from STOP reconfigure the PLL
mbed_official 139:e3413eddde57 58 SetSysClock();
mbed_official 174:8bb9f3a33240 59
mbed_official 84:f54042cbc282 60 // Re-enable us_ticker update interrupt
mbed_official 174:8bb9f3a33240 61 TIM_ITConfig(TIM1, TIM_IT_Update, ENABLE);
mbed_official 60:142c6c6f5949 62 }
mbed_official 174:8bb9f3a33240 63
mbed_official 174:8bb9f3a33240 64 #endif