Mouse code for the MacroRat
Diff: mbed-dev/targets/TARGET_NUVOTON/TARGET_NUC472/sleep.c
- Revision:
- 18:6a4db94011d3
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-dev/targets/TARGET_NUVOTON/TARGET_NUC472/sleep.c Sun May 14 23:18:57 2017 +0000 @@ -0,0 +1,104 @@ +/* mbed Microcontroller Library + * Copyright (c) 2015-2016 Nuvoton + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include "sleep_api.h" +#include "serial_api.h" +#include "lp_ticker_api.h" + +#if DEVICE_SLEEP + +#include "cmsis.h" +#include "device.h" +#include "objects.h" +#include "PeripheralPins.h" + +static void mbed_enter_sleep(struct sleep_s *obj); +static void mbed_exit_sleep(struct sleep_s *obj); + +int serial_allow_powerdown(void); +int spi_allow_powerdown(void); +int i2c_allow_powerdown(void); +int pwmout_allow_powerdown(void); + +/** + * Enter Idle mode. + */ +void hal_sleep(void) +{ + struct sleep_s sleep_obj; + sleep_obj.powerdown = 0; + mbed_enter_sleep(&sleep_obj); + mbed_exit_sleep(&sleep_obj); +} + +/** + * Enter Power-down mode while no peripheral is active; otherwise, enter Idle mode. + */ +void hal_deepsleep(void) +{ + struct sleep_s sleep_obj; + sleep_obj.powerdown = 1; + mbed_enter_sleep(&sleep_obj); + mbed_exit_sleep(&sleep_obj); +} + +static void mbed_enter_sleep(struct sleep_s *obj) +{ + // Check if serial allows entering power-down mode + if (obj->powerdown) { + obj->powerdown = serial_allow_powerdown(); + } + // Check if spi allows entering power-down mode + if (obj->powerdown) { + obj->powerdown = spi_allow_powerdown(); + } + // Check if i2c allows entering power-down mode + if (obj->powerdown) { + obj->powerdown = i2c_allow_powerdown(); + } + // Check if pwmout allows entering power-down mode + if (obj->powerdown) { + obj->powerdown = pwmout_allow_powerdown(); + } + // TODO: Check if other peripherals allow entering power-down mode + + if (obj->powerdown) { // Power-down mode (HIRC/HXT disabled, LIRC/LXT enabled) + SYS_UnlockReg(); + CLK_PowerDown(); + SYS_LockReg(); + } + else { // CPU halt mode (HIRC/HXT enabled, LIRC/LXT enabled) + // NOTE: NUC472's CLK_Idle() will also disable HIRC/HXT. + SYS_UnlockReg(); + SCB->SCR &= ~SCB_SCR_SLEEPDEEP_Msk; + CLK->PWRCTL &= ~CLK_PWRCTL_PDEN_Msk; + __WFI(); + SYS_LockReg(); + } + __NOP(); + __NOP(); + __NOP(); + __NOP(); +} + +static void mbed_exit_sleep(struct sleep_s *obj) +{ + // TODO: TO BE CONTINUED + + (void)obj; +} + +#endif