Elijah Stanger-Jones / mbed-dev-f303

test

targets/TARGET_NUVOTON/TARGET_M451/sleep.c@1:8a094db1347f, 2020-11-09 (annotated)

Committer:
elijahsj
Date:
Mon Nov 09 00:02:47 2020 -0500
Revision:
1:8a094db1347f
test

Who changed what in which revision?

UserRevisionLine numberNew contents of line
elijahsj 1:8a094db1347f 1 /* mbed Microcontroller Library
elijahsj 1:8a094db1347f 2 * Copyright (c) 2015-2016 Nuvoton
elijahsj 1:8a094db1347f 3 *
elijahsj 1:8a094db1347f 4 * Licensed under the Apache License, Version 2.0 (the "License");
elijahsj 1:8a094db1347f 5 * you may not use this file except in compliance with the License.
elijahsj 1:8a094db1347f 6 * You may obtain a copy of the License at
elijahsj 1:8a094db1347f 7 *
elijahsj 1:8a094db1347f 8 * http://www.apache.org/licenses/LICENSE-2.0
elijahsj 1:8a094db1347f 9 *
elijahsj 1:8a094db1347f 10 * Unless required by applicable law or agreed to in writing, software
elijahsj 1:8a094db1347f 11 * distributed under the License is distributed on an "AS IS" BASIS,
elijahsj 1:8a094db1347f 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
elijahsj 1:8a094db1347f 13 * See the License for the specific language governing permissions and
elijahsj 1:8a094db1347f 14 * limitations under the License.
elijahsj 1:8a094db1347f 15 */
elijahsj 1:8a094db1347f 16
elijahsj 1:8a094db1347f 17 #include "sleep_api.h"
elijahsj 1:8a094db1347f 18 #include "serial_api.h"
elijahsj 1:8a094db1347f 19 #include "lp_ticker_api.h"
elijahsj 1:8a094db1347f 20
elijahsj 1:8a094db1347f 21 #if DEVICE_SLEEP
elijahsj 1:8a094db1347f 22
elijahsj 1:8a094db1347f 23 #include "cmsis.h"
elijahsj 1:8a094db1347f 24 #include "device.h"
elijahsj 1:8a094db1347f 25 #include "objects.h"
elijahsj 1:8a094db1347f 26 #include "PeripheralPins.h"
elijahsj 1:8a094db1347f 27
elijahsj 1:8a094db1347f 28 static void mbed_enter_sleep(struct sleep_s *obj);
elijahsj 1:8a094db1347f 29 static void mbed_exit_sleep(struct sleep_s *obj);
elijahsj 1:8a094db1347f 30
elijahsj 1:8a094db1347f 31 int serial_allow_powerdown(void);
elijahsj 1:8a094db1347f 32 int spi_allow_powerdown(void);
elijahsj 1:8a094db1347f 33 int i2c_allow_powerdown(void);
elijahsj 1:8a094db1347f 34 int pwmout_allow_powerdown(void);
elijahsj 1:8a094db1347f 35
elijahsj 1:8a094db1347f 36 /**
elijahsj 1:8a094db1347f 37 * Enter Idle mode.
elijahsj 1:8a094db1347f 38 */
elijahsj 1:8a094db1347f 39 void hal_sleep(void)
elijahsj 1:8a094db1347f 40 {
elijahsj 1:8a094db1347f 41 struct sleep_s sleep_obj;
elijahsj 1:8a094db1347f 42 sleep_obj.powerdown = 0;
elijahsj 1:8a094db1347f 43 mbed_enter_sleep(&sleep_obj);
elijahsj 1:8a094db1347f 44 mbed_exit_sleep(&sleep_obj);
elijahsj 1:8a094db1347f 45 }
elijahsj 1:8a094db1347f 46
elijahsj 1:8a094db1347f 47 /**
elijahsj 1:8a094db1347f 48 * Enter Power-down mode while no peripheral is active; otherwise, enter Idle mode.
elijahsj 1:8a094db1347f 49 */
elijahsj 1:8a094db1347f 50 void hal_deepsleep(void)
elijahsj 1:8a094db1347f 51 {
elijahsj 1:8a094db1347f 52 struct sleep_s sleep_obj;
elijahsj 1:8a094db1347f 53 sleep_obj.powerdown = 1;
elijahsj 1:8a094db1347f 54 mbed_enter_sleep(&sleep_obj);
elijahsj 1:8a094db1347f 55 mbed_exit_sleep(&sleep_obj);
elijahsj 1:8a094db1347f 56 }
elijahsj 1:8a094db1347f 57
elijahsj 1:8a094db1347f 58 static void mbed_enter_sleep(struct sleep_s *obj)
elijahsj 1:8a094db1347f 59 {
elijahsj 1:8a094db1347f 60 // Check if serial allows entering power-down mode
elijahsj 1:8a094db1347f 61 if (obj->powerdown) {
elijahsj 1:8a094db1347f 62 obj->powerdown = serial_allow_powerdown();
elijahsj 1:8a094db1347f 63 }
elijahsj 1:8a094db1347f 64 // Check if spi allows entering power-down mode
elijahsj 1:8a094db1347f 65 if (obj->powerdown) {
elijahsj 1:8a094db1347f 66 obj->powerdown = spi_allow_powerdown();
elijahsj 1:8a094db1347f 67 }
elijahsj 1:8a094db1347f 68 // Check if i2c allows entering power-down mode
elijahsj 1:8a094db1347f 69 if (obj->powerdown) {
elijahsj 1:8a094db1347f 70 obj->powerdown = i2c_allow_powerdown();
elijahsj 1:8a094db1347f 71 }
elijahsj 1:8a094db1347f 72 // Check if pwmout allows entering power-down mode
elijahsj 1:8a094db1347f 73 if (obj->powerdown) {
elijahsj 1:8a094db1347f 74 obj->powerdown = pwmout_allow_powerdown();
elijahsj 1:8a094db1347f 75 }
elijahsj 1:8a094db1347f 76 // TODO: Check if other peripherals allow entering power-down mode
elijahsj 1:8a094db1347f 77
elijahsj 1:8a094db1347f 78 if (obj->powerdown) { // Power-down mode (HIRC/HXT disabled, LIRC/LXT enabled)
elijahsj 1:8a094db1347f 79 SYS_UnlockReg();
elijahsj 1:8a094db1347f 80 CLK_PowerDown();
elijahsj 1:8a094db1347f 81 SYS_LockReg();
elijahsj 1:8a094db1347f 82 }
elijahsj 1:8a094db1347f 83 else { // CPU halt mode (HIRC/HXT enabled, LIRC/LXT enabled)
elijahsj 1:8a094db1347f 84 SYS_UnlockReg();
elijahsj 1:8a094db1347f 85 CLK_Idle();
elijahsj 1:8a094db1347f 86 SYS_LockReg();
elijahsj 1:8a094db1347f 87 }
elijahsj 1:8a094db1347f 88 __NOP();
elijahsj 1:8a094db1347f 89 __NOP();
elijahsj 1:8a094db1347f 90 __NOP();
elijahsj 1:8a094db1347f 91 __NOP();
elijahsj 1:8a094db1347f 92 }
elijahsj 1:8a094db1347f 93
elijahsj 1:8a094db1347f 94 static void mbed_exit_sleep(struct sleep_s *obj)
elijahsj 1:8a094db1347f 95 {
elijahsj 1:8a094db1347f 96 // TODO: TO BE CONTINUED
elijahsj 1:8a094db1347f 97
elijahsj 1:8a094db1347f 98 (void)obj;
elijahsj 1:8a094db1347f 99 }
elijahsj 1:8a094db1347f 100
elijahsj 1:8a094db1347f 101 #endif