Jolyon Hill / mbed-dev

Changes to support running on smaller memory LPC device LPC1764

Fork of mbed-dev by mbed official

targets/hal/TARGET_STM/TARGET_STM32L4/sleep.c@149:6f3fb14e6942, 2016-10-10 (annotated)

Committer:
jolyon
Date:
Mon Oct 10 14:36:54 2016 +0000
Revision:
149:6f3fb14e6942
Parent:
148:21d94c44109e 
Working with LPC1764 & inverted LEDS

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 144:ef7eb2e8f9f7 1 /* mbed Microcontroller Library
<> 144:ef7eb2e8f9f7 2 *******************************************************************************
<> 144:ef7eb2e8f9f7 3 * Copyright (c) 2015, STMicroelectronics
<> 144:ef7eb2e8f9f7 4 * All rights reserved.
<> 144:ef7eb2e8f9f7 5 *
<> 144:ef7eb2e8f9f7 6 * Redistribution and use in source and binary forms, with or without
<> 144:ef7eb2e8f9f7 7 * modification, are permitted provided that the following conditions are met:
<> 144:ef7eb2e8f9f7 8 *
<> 144:ef7eb2e8f9f7 9 * 1. Redistributions of source code must retain the above copyright notice,
<> 144:ef7eb2e8f9f7 10 * this list of conditions and the following disclaimer.
<> 144:ef7eb2e8f9f7 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
<> 144:ef7eb2e8f9f7 12 * this list of conditions and the following disclaimer in the documentation
<> 144:ef7eb2e8f9f7 13 * and/or other materials provided with the distribution.
<> 144:ef7eb2e8f9f7 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
<> 144:ef7eb2e8f9f7 15 * may be used to endorse or promote products derived from this software
<> 144:ef7eb2e8f9f7 16 * without specific prior written permission.
<> 144:ef7eb2e8f9f7 17 *
<> 144:ef7eb2e8f9f7 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
<> 144:ef7eb2e8f9f7 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
<> 144:ef7eb2e8f9f7 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
<> 144:ef7eb2e8f9f7 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
<> 144:ef7eb2e8f9f7 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
<> 144:ef7eb2e8f9f7 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
<> 144:ef7eb2e8f9f7 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
<> 144:ef7eb2e8f9f7 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
<> 144:ef7eb2e8f9f7 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
<> 144:ef7eb2e8f9f7 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
<> 144:ef7eb2e8f9f7 28 *******************************************************************************
<> 144:ef7eb2e8f9f7 29 */
<> 144:ef7eb2e8f9f7 30 #include "sleep_api.h"
<> 148:21d94c44109e 31 #include "rtc_api_hal.h"
<> 144:ef7eb2e8f9f7 32
<> 144:ef7eb2e8f9f7 33 #if DEVICE_SLEEP
<> 144:ef7eb2e8f9f7 34
<> 144:ef7eb2e8f9f7 35 #include "cmsis.h"
<> 144:ef7eb2e8f9f7 36
<> 144:ef7eb2e8f9f7 37 void sleep(void) {
<> 144:ef7eb2e8f9f7 38 // Stop HAL systick
<> 144:ef7eb2e8f9f7 39 HAL_SuspendTick();
<> 144:ef7eb2e8f9f7 40 // Request to enter SLEEP mode
<> 144:ef7eb2e8f9f7 41 HAL_PWR_EnterSLEEPMode(PWR_MAINREGULATOR_ON, PWR_SLEEPENTRY_WFI);
<> 144:ef7eb2e8f9f7 42 // Restart HAL systick
<> 144:ef7eb2e8f9f7 43 HAL_ResumeTick();
<> 144:ef7eb2e8f9f7 44 }
<> 144:ef7eb2e8f9f7 45
<> 144:ef7eb2e8f9f7 46 void deepsleep(void)
<> 144:ef7eb2e8f9f7 47 {
<> 144:ef7eb2e8f9f7 48 // Stop HAL systick
<> 144:ef7eb2e8f9f7 49 HAL_SuspendTick();
<> 144:ef7eb2e8f9f7 50
<> 148:21d94c44109e 51 // Request to enter STOP mode 1 with regulator in low power mode
<> 148:21d94c44109e 52 if (__HAL_RCC_PWR_IS_CLK_ENABLED()) {
<> 148:21d94c44109e 53 HAL_PWREx_EnableLowPowerRunMode();
<> 148:21d94c44109e 54 HAL_PWR_EnterSTOPMode(PWR_LOWPOWERREGULATOR_ON, PWR_STOPENTRY_WFI);
<> 148:21d94c44109e 55 HAL_PWREx_DisableLowPowerRunMode();
<> 148:21d94c44109e 56 } else {
<> 148:21d94c44109e 57 __HAL_RCC_PWR_CLK_ENABLE();
<> 148:21d94c44109e 58 HAL_PWREx_EnableLowPowerRunMode();
<> 148:21d94c44109e 59 HAL_PWR_EnterSTOPMode(PWR_LOWPOWERREGULATOR_ON, PWR_STOPENTRY_WFI);
<> 148:21d94c44109e 60 HAL_PWREx_DisableLowPowerRunMode();
<> 148:21d94c44109e 61 __HAL_RCC_PWR_CLK_DISABLE();
<> 148:21d94c44109e 62 }
<> 144:ef7eb2e8f9f7 63
<> 144:ef7eb2e8f9f7 64 // After wake-up from STOP reconfigure the PLL
<> 144:ef7eb2e8f9f7 65 SetSysClock();
<> 144:ef7eb2e8f9f7 66
<> 144:ef7eb2e8f9f7 67 // Restart HAL systick
<> 144:ef7eb2e8f9f7 68 HAL_ResumeTick();
<> 148:21d94c44109e 69
<> 148:21d94c44109e 70 #if DEVICE_LOWPOWERTIMER
<> 148:21d94c44109e 71 rtc_synchronize();
<> 148:21d94c44109e 72 #endif
<> 144:ef7eb2e8f9f7 73 }
<> 144:ef7eb2e8f9f7 74
<> 144:ef7eb2e8f9f7 75 #endif