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targets/hal/TARGET_STM/TARGET_NUCLEO_F030R8/sleep.c@166:cb4253f91ada, 2014-04-22 (annotated)

Committer:
mbed_official
Date:
Tue Apr 22 16:00:06 2014 +0100
Revision:
166:cb4253f91ada
Parent:
84:f54042cbc282
Child:
216:577900467c9e
Synchronized with git revision a519f94f35c3993310499623be5c28f74b80485c



Full URL: https://github.com/mbedmicro/mbed/commit/a519f94f35c3993310499623be5c28f74b80485c/



[NUCLEO_F030R8] Many improvements added

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 77:b5886236e6f0 1 /* mbed Microcontroller Library
mbed_official 77:b5886236e6f0 2 *******************************************************************************
mbed_official 77:b5886236e6f0 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 77:b5886236e6f0 4 * All rights reserved.
mbed_official 77:b5886236e6f0 5 *
mbed_official 77:b5886236e6f0 6 * Redistribution and use in source and binary forms, with or without
mbed_official 77:b5886236e6f0 7 * modification, are permitted provided that the following conditions are met:
mbed_official 77:b5886236e6f0 8 *
mbed_official 77:b5886236e6f0 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 77:b5886236e6f0 10 * this list of conditions and the following disclaimer.
mbed_official 77:b5886236e6f0 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 77:b5886236e6f0 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 77:b5886236e6f0 13 * and/or other materials provided with the distribution.
mbed_official 77:b5886236e6f0 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 77:b5886236e6f0 15 * may be used to endorse or promote products derived from this software
mbed_official 77:b5886236e6f0 16 * without specific prior written permission.
mbed_official 77:b5886236e6f0 17 *
mbed_official 77:b5886236e6f0 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 77:b5886236e6f0 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 77:b5886236e6f0 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 77:b5886236e6f0 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 77:b5886236e6f0 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 77:b5886236e6f0 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 77:b5886236e6f0 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 77:b5886236e6f0 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 77:b5886236e6f0 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 77:b5886236e6f0 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 77:b5886236e6f0 28 *******************************************************************************
mbed_official 77:b5886236e6f0 29 */
mbed_official 77:b5886236e6f0 30 #include "sleep_api.h"
mbed_official 166:cb4253f91ada 31
mbed_official 166:cb4253f91ada 32 #if DEVICE_SLEEP
mbed_official 166:cb4253f91ada 33
mbed_official 77:b5886236e6f0 34 #include "cmsis.h"
mbed_official 77:b5886236e6f0 35
mbed_official 77:b5886236e6f0 36 void sleep(void)
mbed_official 77:b5886236e6f0 37 {
mbed_official 84:f54042cbc282 38 // Disable us_ticker update interrupt
mbed_official 84:f54042cbc282 39 TIM_ITConfig(TIM1, TIM_IT_Update, DISABLE);
mbed_official 84:f54042cbc282 40
mbed_official 77:b5886236e6f0 41 SCB->SCR = 0; // Normal sleep mode for ARM core
mbed_official 77:b5886236e6f0 42 __WFI();
mbed_official 84:f54042cbc282 43
mbed_official 84:f54042cbc282 44 // Re-enable us_ticker update interrupt
mbed_official 84:f54042cbc282 45 TIM_ITConfig(TIM1, TIM_IT_Update, ENABLE);
mbed_official 77:b5886236e6f0 46 }
mbed_official 77:b5886236e6f0 47
mbed_official 84:f54042cbc282 48 // MCU STOP mode
mbed_official 84:f54042cbc282 49 // Wake-up with external interrupt
mbed_official 77:b5886236e6f0 50 void deepsleep(void)
mbed_official 84:f54042cbc282 51 {
mbed_official 77:b5886236e6f0 52 // Enable PWR clock
mbed_official 77:b5886236e6f0 53 RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE);
mbed_official 77:b5886236e6f0 54
mbed_official 77:b5886236e6f0 55 // Request to enter STOP mode with regulator in low power mode
mbed_official 84:f54042cbc282 56 PWR_EnterSTOPMode(PWR_Regulator_LowPower, PWR_STOPEntry_WFI);
mbed_official 166:cb4253f91ada 57
mbed_official 166:cb4253f91ada 58 // After wake-up from STOP reconfigure the PLL
mbed_official 166:cb4253f91ada 59 SetSysClock();
mbed_official 77:b5886236e6f0 60 }
mbed_official 166:cb4253f91ada 61
mbed_official 166:cb4253f91ada 62 #endif