forked from mirrors/qmk_userspace
135 lines
3.8 KiB
C
135 lines
3.8 KiB
C
|
|
/* Copyright 2024 @ lokher (https://www.keychron.com)
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "quantum.h"
|
|
#include "lpm.h"
|
|
|
|
bool wakeup_from_lpm;
|
|
static pm_t power_mode = PM_RUN;
|
|
|
|
static const uint32_t pre_lp_code[] = {553863175u, 554459777u, 1208378049u, 4026624001u, 688390415u, 554227969u, 3204472833u, 1198571264u, 1073807360u, 1073808388u,};
|
|
#define PRE_LP() ((void (*)(void))((unsigned int)(pre_lp_code) | 0x01))()
|
|
|
|
static const uint32_t post_lp_code[] = {553863177u, 554459777u, 1208509121u, 51443856u, 4026550535u, 1745485839u, 3489677954u, 536895496u, 673389632u, 1198578684u, 1073807360u, 536866816u, 1073808388u,};
|
|
#define POST_LP() ((void (*)(void))((unsigned int)(post_lp_code) | 0x01))()
|
|
|
|
extern void __early_init(void);
|
|
extern void matrix_init_pins(void);
|
|
|
|
void stop_mode_entry(void);
|
|
|
|
void lpm_post_enter_low_power(void) {
|
|
/* USB D+/D- */
|
|
palSetLineMode(A12, PAL_MODE_INPUT_PULLUP); // why PAL_MODE_INPUT_PULLUP
|
|
palSetLineMode(A11, PAL_MODE_INPUT_PULLDOWN);
|
|
|
|
palSetLineMode(DP_PULLUP_CONTROL_PIN, PAL_MODE_INPUT_PULLDOWN);
|
|
}
|
|
|
|
void lpm_pre_wakeup(void) {
|
|
/* USB D+/D- */
|
|
palSetLineMode(A11, PAL_WB32_OTYPE_PUSHPULL | PAL_WB32_OSPEED_HIGH | PAL_WB32_PUPDR_FLOATING | PAL_MODE_ALTERNATE(10U));
|
|
palSetLineMode(A12, PAL_WB32_OTYPE_PUSHPULL | PAL_WB32_OSPEED_HIGH | PAL_WB32_PUPDR_FLOATING | PAL_MODE_ALTERNATE(10U));
|
|
|
|
/* SPI */
|
|
#if (HAL_USE_SPI == TRUE)
|
|
palSetLineMode(SPI_SCK_PIN, PAL_MODE_ALTERNATE(5));
|
|
palSetLineMode(SPI_MISO_PIN, PAL_MODE_ALTERNATE(5));
|
|
palSetLineMode(SPI_MOSI_PIN, PAL_MODE_ALTERNATE(5));
|
|
#endif
|
|
}
|
|
|
|
bool lpm_set(pm_t mode) {
|
|
bool ret = true;
|
|
|
|
switch (mode) {
|
|
case PM_SLEEP:
|
|
/* Wake source: Any interrupt or event */
|
|
if (power_mode != PM_RUN)
|
|
ret = false;
|
|
else
|
|
SCB->SCR &= ~SCB_SCR_SLEEPDEEP_Msk;
|
|
break;
|
|
|
|
case PM_STOP:
|
|
if (power_mode != PM_RUN) ret = false;
|
|
break;
|
|
|
|
case PM_STANDBY:
|
|
if (power_mode != PM_RUN)
|
|
ret = false;
|
|
else {
|
|
SCB->SCR |= SCB_SCR_SLEEPDEEP_Msk;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
power_mode = mode;
|
|
|
|
return ret;
|
|
}
|
|
|
|
void lpm_standby(pm_t mode) {
|
|
chSysDisable();
|
|
wb32_set_main_clock_to_mhsi();
|
|
|
|
rtclp_lld_init();
|
|
stop_mode_entry();
|
|
chSysEnable();
|
|
}
|
|
|
|
void lpm_wakeup_init(void) {
|
|
wakeup_from_lpm = true;
|
|
__early_init();
|
|
wakeup_from_lpm = false;
|
|
}
|
|
|
|
void stop_mode_entry(void) {
|
|
EXTI->PR = 0x7FFFF;
|
|
for (uint8_t i = 0; i < 8; i++) {
|
|
for (uint8_t j = 0; j < 32; j++) {
|
|
if (NVIC->ISPR[i] & (0x01UL < j)) {
|
|
NVIC->ICPR[i] = (0x01UL < j);
|
|
}
|
|
}
|
|
}
|
|
SCB->ICSR |= SCB_ICSR_PENDSTCLR_Msk; // Clear Systick IRQ Pending
|
|
|
|
/* Clear all bits except DBP and FCLKSD bit */
|
|
PWR->CR0 &= 0x09U;
|
|
|
|
/* STOP LP4 MODE S32KON */
|
|
PWR->CR0 |= 0x3B004U;
|
|
PWR->CFGR = 0x3B3;
|
|
|
|
PRE_LP();
|
|
|
|
/* Set SLEEPDEEP bit of Cortex System Control Register */
|
|
SCB->SCR |= SCB_SCR_SLEEPDEEP_Msk;
|
|
|
|
/* Request Wait For Interrupt */
|
|
__WFI();
|
|
|
|
POST_LP();
|
|
|
|
/* Clear SLEEPDEEP bit of Cortex System Control Register */
|
|
SCB->SCR &= (~SCB_SCR_SLEEPDEEP_Msk);
|
|
|
|
lpm_early_wakeup();
|
|
}
|