anyThing Connected Team / mbed-dev

mbed library sources. Supersedes mbed-src.

Dependents:   BREAK_SENSOR_LED

Fork of mbed-dev by mbed official

targets/TARGET_NUVOTON/TARGET_NUC472/sleep.c@160:d5399cc887bb, 2017-03-14 (annotated)

Committer:
<>
Date:
Tue Mar 14 16:40:56 2017 +0000
Revision:
160:d5399cc887bb
Parent:
159:612c381a210f
Child:
176:447f873cad2f
This updates the lib to the mbed lib v138

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 144:ef7eb2e8f9f7 1 /* mbed Microcontroller Library
<> 144:ef7eb2e8f9f7 2 * Copyright (c) 2015-2016 Nuvoton
<> 144:ef7eb2e8f9f7 3 *
<> 144:ef7eb2e8f9f7 4 * Licensed under the Apache License, Version 2.0 (the "License");
<> 144:ef7eb2e8f9f7 5 * you may not use this file except in compliance with the License.
<> 144:ef7eb2e8f9f7 6 * You may obtain a copy of the License at
<> 144:ef7eb2e8f9f7 7 *
<> 144:ef7eb2e8f9f7 8 * http://www.apache.org/licenses/LICENSE-2.0
<> 144:ef7eb2e8f9f7 9 *
<> 144:ef7eb2e8f9f7 10 * Unless required by applicable law or agreed to in writing, software
<> 144:ef7eb2e8f9f7 11 * distributed under the License is distributed on an "AS IS" BASIS,
<> 144:ef7eb2e8f9f7 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
<> 144:ef7eb2e8f9f7 13 * See the License for the specific language governing permissions and
<> 144:ef7eb2e8f9f7 14 * limitations under the License.
<> 144:ef7eb2e8f9f7 15 */
<> 144:ef7eb2e8f9f7 16
<> 144:ef7eb2e8f9f7 17 #include "sleep_api.h"
<> 144:ef7eb2e8f9f7 18 #include "serial_api.h"
<> 144:ef7eb2e8f9f7 19 #include "lp_ticker_api.h"
<> 144:ef7eb2e8f9f7 20
<> 144:ef7eb2e8f9f7 21 #if DEVICE_SLEEP
<> 144:ef7eb2e8f9f7 22
<> 144:ef7eb2e8f9f7 23 #include "cmsis.h"
<> 144:ef7eb2e8f9f7 24 #include "device.h"
<> 144:ef7eb2e8f9f7 25 #include "objects.h"
<> 144:ef7eb2e8f9f7 26 #include "PeripheralPins.h"
<> 144:ef7eb2e8f9f7 27
<> 144:ef7eb2e8f9f7 28 static void mbed_enter_sleep(struct sleep_s *obj);
<> 144:ef7eb2e8f9f7 29 static void mbed_exit_sleep(struct sleep_s *obj);
<> 144:ef7eb2e8f9f7 30
<> 144:ef7eb2e8f9f7 31 int serial_allow_powerdown(void);
<> 144:ef7eb2e8f9f7 32 int spi_allow_powerdown(void);
<> 144:ef7eb2e8f9f7 33 int i2c_allow_powerdown(void);
<> 144:ef7eb2e8f9f7 34 int pwmout_allow_powerdown(void);
<> 144:ef7eb2e8f9f7 35
<> 144:ef7eb2e8f9f7 36 /**
<> 144:ef7eb2e8f9f7 37 * Enter Idle mode.
<> 144:ef7eb2e8f9f7 38 */
<> 160:d5399cc887bb 39 void hal_sleep(void)
<> 144:ef7eb2e8f9f7 40 {
<> 144:ef7eb2e8f9f7 41 struct sleep_s sleep_obj;
<> 144:ef7eb2e8f9f7 42 sleep_obj.powerdown = 0;
<> 144:ef7eb2e8f9f7 43 mbed_enter_sleep(&sleep_obj);
<> 144:ef7eb2e8f9f7 44 mbed_exit_sleep(&sleep_obj);
<> 144:ef7eb2e8f9f7 45 }
<> 144:ef7eb2e8f9f7 46
<> 144:ef7eb2e8f9f7 47 /**
<> 144:ef7eb2e8f9f7 48 * Enter Power-down mode while no peripheral is active; otherwise, enter Idle mode.
<> 144:ef7eb2e8f9f7 49 */
<> 160:d5399cc887bb 50 void hal_deepsleep(void)
<> 144:ef7eb2e8f9f7 51 {
<> 144:ef7eb2e8f9f7 52 struct sleep_s sleep_obj;
<> 144:ef7eb2e8f9f7 53 sleep_obj.powerdown = 1;
<> 144:ef7eb2e8f9f7 54 mbed_enter_sleep(&sleep_obj);
<> 144:ef7eb2e8f9f7 55 mbed_exit_sleep(&sleep_obj);
<> 144:ef7eb2e8f9f7 56 }
<> 144:ef7eb2e8f9f7 57
<> 144:ef7eb2e8f9f7 58 static void mbed_enter_sleep(struct sleep_s *obj)
<> 144:ef7eb2e8f9f7 59 {
<> 144:ef7eb2e8f9f7 60 // Check if serial allows entering power-down mode
<> 144:ef7eb2e8f9f7 61 if (obj->powerdown) {
<> 144:ef7eb2e8f9f7 62 obj->powerdown = serial_allow_powerdown();
<> 144:ef7eb2e8f9f7 63 }
<> 144:ef7eb2e8f9f7 64 // Check if spi allows entering power-down mode
<> 144:ef7eb2e8f9f7 65 if (obj->powerdown) {
<> 144:ef7eb2e8f9f7 66 obj->powerdown = spi_allow_powerdown();
<> 144:ef7eb2e8f9f7 67 }
<> 144:ef7eb2e8f9f7 68 // Check if i2c allows entering power-down mode
<> 144:ef7eb2e8f9f7 69 if (obj->powerdown) {
<> 144:ef7eb2e8f9f7 70 obj->powerdown = i2c_allow_powerdown();
<> 144:ef7eb2e8f9f7 71 }
<> 144:ef7eb2e8f9f7 72 // Check if pwmout allows entering power-down mode
<> 144:ef7eb2e8f9f7 73 if (obj->powerdown) {
<> 144:ef7eb2e8f9f7 74 obj->powerdown = pwmout_allow_powerdown();
<> 144:ef7eb2e8f9f7 75 }
<> 144:ef7eb2e8f9f7 76 // TODO: Check if other peripherals allow entering power-down mode
<> 144:ef7eb2e8f9f7 77
<> 144:ef7eb2e8f9f7 78 if (obj->powerdown) { // Power-down mode (HIRC/HXT disabled, LIRC/LXT enabled)
<> 144:ef7eb2e8f9f7 79 SYS_UnlockReg();
<> 144:ef7eb2e8f9f7 80 CLK_PowerDown();
<> 144:ef7eb2e8f9f7 81 SYS_LockReg();
<> 144:ef7eb2e8f9f7 82 }
<> 144:ef7eb2e8f9f7 83 else { // CPU halt mode (HIRC/HXT enabled, LIRC/LXT enabled)
<> 144:ef7eb2e8f9f7 84 // NOTE: NUC472's CLK_Idle() will also disable HIRC/HXT.
<> 144:ef7eb2e8f9f7 85 SYS_UnlockReg();
<> 144:ef7eb2e8f9f7 86 SCB->SCR &= ~SCB_SCR_SLEEPDEEP_Msk;
<> 144:ef7eb2e8f9f7 87 CLK->PWRCTL &= ~CLK_PWRCTL_PDEN_Msk;
<> 144:ef7eb2e8f9f7 88 __WFI();
<> 144:ef7eb2e8f9f7 89 SYS_LockReg();
<> 144:ef7eb2e8f9f7 90 }
<> 144:ef7eb2e8f9f7 91 __NOP();
<> 144:ef7eb2e8f9f7 92 __NOP();
<> 144:ef7eb2e8f9f7 93 __NOP();
<> 144:ef7eb2e8f9f7 94 __NOP();
<> 144:ef7eb2e8f9f7 95 }
<> 144:ef7eb2e8f9f7 96
<> 144:ef7eb2e8f9f7 97 static void mbed_exit_sleep(struct sleep_s *obj)
<> 144:ef7eb2e8f9f7 98 {
<> 144:ef7eb2e8f9f7 99 // TODO: TO BE CONTINUED
<> 144:ef7eb2e8f9f7 100
<> 144:ef7eb2e8f9f7 101 (void)obj;
<> 144:ef7eb2e8f9f7 102 }
<> 144:ef7eb2e8f9f7 103
<> 144:ef7eb2e8f9f7 104 #endif