forked from mirrors/qmk_userspace
136 lines
3.7 KiB
C
136 lines
3.7 KiB
C
/* Copyright 2022~2024 @ lokher (https://www.keychron.com)
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/******************************************************************************
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*
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* Filename: lpm_stm32f401.c
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*
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* Description: Contains low power mode implementation
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*
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******************************************************************************/
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#include "quantum.h"
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#include <usb_main.h>
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#include "wireless.h"
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#include "lpm.h"
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#include "lpm_stm32f401.h"
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#include "config.h"
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#include "hal.h"
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static pm_t power_mode = PM_RUN;
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void lpm_post_enter_low_power(void) {
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/* USB D+/D- */
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palSetLineMode(A12, PAL_MODE_INPUT_PULLDOWN);
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palSetLineMode(A11, PAL_MODE_INPUT_PULLDOWN);
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}
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void lpm_pre_wakeup(void) {
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/* USB D+/D- */
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palSetLineMode(A11, PAL_STM32_OTYPE_PUSHPULL | PAL_STM32_OSPEED_HIGHEST | PAL_STM32_PUPDR_FLOATING | PAL_MODE_ALTERNATE(10U));
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palSetLineMode(A12, PAL_STM32_OTYPE_PUSHPULL | PAL_STM32_OSPEED_HIGHEST | PAL_STM32_PUPDR_FLOATING | PAL_MODE_ALTERNATE(10U));
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/* SPI */
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#if (HAL_USE_SPI == TRUE)
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palSetLineMode(SPI_SCK_PIN, PAL_MODE_ALTERNATE(5));
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palSetLineMode(SPI_MISO_PIN, PAL_MODE_ALTERNATE(5));
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palSetLineMode(SPI_MOSI_PIN, PAL_MODE_ALTERNATE(5));
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#endif
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}
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bool lpm_set(pm_t mode) {
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bool ret = true;
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switch (mode) {
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case PM_SLEEP:
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/* Wake source: Any interrupt or event */
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if (power_mode != PM_RUN)
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ret = false;
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else
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SCB->SCR &= ~SCB_SCR_SLEEPDEEP_Msk;
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break;
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case PM_STOP:
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/* Wake source: Reset pin, all I/Os, BOR, PVD, PVM, RTC, LCD, IWDG,
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COMPx, USARTx, LPUART1, I2Cx, LPTIMx, USB, SWPMI */
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if (power_mode != PM_RUN)
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ret = false;
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else {
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SCB->SCR |= SCB_SCR_SLEEPDEEP_Msk;
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PWR->CR |=
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# if STOP_MODE_MAIN_REGULATOR_LOW_VOLTAGE
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PWR_CR_MRLVDS |
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# endif
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# if STOP_MODE_LOW_POWER_REGULATOR_LOW_VOLTAG
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PWR_CR_LPLVDS |
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# endif
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# if STOP_MODE_FLASH_POWER_DOWN
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PWR_CR_FPDS |
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# endif
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# if STOP_MODE_LOW_POWER_DEEPSLEEP
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PWR_CR_LPDS |
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# endif
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0;
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}
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break;
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case PM_STANDBY:
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if (power_mode != PM_RUN)
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ret = false;
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else {
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SCB->SCR |= SCB_SCR_SLEEPDEEP_Msk;
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}
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break;
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default:
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break;
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}
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power_mode = mode;
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return ret;
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}
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void lpm_standby(pm_t mode) {
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#if STM32_HSE_ENABLED
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/* Switch to HSI */
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RCC->CFGR = (RCC->CFGR & (~STM32_SW_MASK)) | STM32_SW_HSI;
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while ((RCC->CFGR & RCC_CFGR_SWS) != (STM32_SW_HSI << 2))
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;
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/* Set HSE off */
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RCC->CR &= ~RCC_CR_HSEON;
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while ((RCC->CR & RCC_CR_HSERDY))
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;
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/* To avoid power consumption of floating GPIO */
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palSetLineMode(H0, PAL_MODE_INPUT_PULLDOWN);
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palSetLineMode(H1, PAL_MODE_INPUT_PULLDOWN);
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#endif
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__WFI();
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SCB->SCR &= ~SCB_SCR_SLEEPDEEP_Msk;
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}
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void lpm_wakeup_init(void) {
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stm32_clock_init();
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}
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void usb_power_connect(void) {}
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void usb_power_disconnect(void) {}
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