mbed library sources
Dependents: frdm_kl05z_gpio_test
Fork of mbed-src by
Diff: targets/hal/TARGET_STM/TARGET_DISCO_F051R8/sleep.c
- Revision:
- 130:1dec54e4aec3
- Child:
- 240:9a7c54113eaf
diff -r 0182c99221bc -r 1dec54e4aec3 targets/hal/TARGET_STM/TARGET_DISCO_F051R8/sleep.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/targets/hal/TARGET_STM/TARGET_DISCO_F051R8/sleep.c Fri Mar 21 11:45:09 2014 +0000 @@ -0,0 +1,54 @@ +/* mbed Microcontroller Library + ******************************************************************************* + * Copyright (c) 2014, STMicroelectronics + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. Neither the name of STMicroelectronics nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS 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. + ******************************************************************************* + */ +#include "sleep_api.h" +#include "cmsis.h" + +void sleep(void) +{ + // Disable us_ticker update interrupt + TIM_ITConfig(TIM1, TIM_IT_Update, DISABLE); + + SCB->SCR = 0; // Normal sleep mode for ARM core + __WFI(); + + // Re-enable us_ticker update interrupt + TIM_ITConfig(TIM1, TIM_IT_Update, ENABLE); +} + +// MCU STOP mode +// Wake-up with external interrupt +void deepsleep(void) +{ + // Enable PWR clock + RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE); + + // Request to enter STOP mode with regulator in low power mode + PWR_EnterSTOPMode(PWR_Regulator_LowPower, PWR_STOPEntry_WFI); +}