Intelligent Systems / mbed-src

This fork of the MBED Library allows you to use counters on the external counter pins (15/16 for Timer 3, 29/30 for Timer 2) by switching internal timing functions in MBED to utilize Timer 0

Fork of mbed-src by mbed official

targets/hal/TARGET_STM/TARGET_STM32F3XX/sleep.c@349:591ef4b19797, 2014-10-23 (annotated)

Committer:
bparrott
Date:
Thu Oct 23 10:10:42 2014 +0000
Revision:
349:591ef4b19797
Parent:
155:8435094ec241 
This changes the timer used at the core of MBED from Timer 3 to Timer 0. This allows for the use of external pins with both Timer 2 and 3.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 155:8435094ec241 1 /* mbed Microcontroller Library
mbed_official 155:8435094ec241 2 *******************************************************************************
mbed_official 155:8435094ec241 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 155:8435094ec241 4 * All rights reserved.
mbed_official 155:8435094ec241 5 *
mbed_official 155:8435094ec241 6 * Redistribution and use in source and binary forms, with or without
mbed_official 155:8435094ec241 7 * modification, are permitted provided that the following conditions are met:
mbed_official 155:8435094ec241 8 *
mbed_official 155:8435094ec241 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 155:8435094ec241 10 * this list of conditions and the following disclaimer.
mbed_official 155:8435094ec241 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 155:8435094ec241 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 155:8435094ec241 13 * and/or other materials provided with the distribution.
mbed_official 155:8435094ec241 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 155:8435094ec241 15 * may be used to endorse or promote products derived from this software
mbed_official 155:8435094ec241 16 * without specific prior written permission.
mbed_official 155:8435094ec241 17 *
mbed_official 155:8435094ec241 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 155:8435094ec241 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 155:8435094ec241 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 155:8435094ec241 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 155:8435094ec241 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 155:8435094ec241 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 155:8435094ec241 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 155:8435094ec241 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 155:8435094ec241 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 155:8435094ec241 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 155:8435094ec241 28 *******************************************************************************
mbed_official 155:8435094ec241 29 */
mbed_official 155:8435094ec241 30 #include "sleep_api.h"
mbed_official 155:8435094ec241 31 #include "cmsis.h"
mbed_official 155:8435094ec241 32
mbed_official 155:8435094ec241 33 // This function is in the system_stm32f30x.c file
mbed_official 155:8435094ec241 34 extern void SetSysClock(void);
mbed_official 155:8435094ec241 35
mbed_official 155:8435094ec241 36 // MCU SLEEP mode
mbed_official 155:8435094ec241 37 void sleep(void) {
mbed_official 155:8435094ec241 38 // Enable PWR clock
mbed_official 155:8435094ec241 39 RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE);
mbed_official 155:8435094ec241 40
mbed_official 155:8435094ec241 41 // Request to enter SLEEP mode
mbed_official 155:8435094ec241 42 PWR_EnterSleepMode(PWR_SLEEPEntry_WFI);
mbed_official 155:8435094ec241 43 }
mbed_official 155:8435094ec241 44
mbed_official 155:8435094ec241 45 // MCU STOP mode
mbed_official 155:8435094ec241 46 void deepsleep(void) {
mbed_official 155:8435094ec241 47 // Enable PWR clock
mbed_official 155:8435094ec241 48 RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE);
mbed_official 155:8435094ec241 49
mbed_official 155:8435094ec241 50 // Enter Stop Mode
mbed_official 155:8435094ec241 51 PWR_EnterSTOPMode(PWR_Regulator_LowPower, PWR_STOPEntry_WFI);
mbed_official 155:8435094ec241 52
mbed_official 155:8435094ec241 53 // After wake-up from STOP reconfigure the PLL
mbed_official 155:8435094ec241 54 SetSysClock();
mbed_official 155:8435094ec241 55 }