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Merged
merged 1 commit into from
Oct 17, 2025
Merged

feat(wl3): add STM32WL3x support #131

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2 changes: 1 addition & 1 deletion README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -58,7 +58,7 @@ enable an I2C peripheral in low power mode. See board documentation for low powe
> * The board will restart when exit shutdown mode.

> [!Important]
> For STM32WB0x:
> For STM32WB0x and STM32WL3x:
> * board will restart when exit shutdown mode and deep sleep.
> * Shutdown wakeup only with reset pin.
> * Wakeup from UART not supported.
Expand Down
16 changes: 11 additions & 5 deletions src/STM32LowPower.cpp
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Expand Up @@ -68,7 +68,11 @@ void STM32LowPower::idle(uint32_t ms)
if ((ms != 0) || _rtc_wakeup) {
programRtcWakeUp(ms, IDLE_MODE);
}
#if defined(PWR_MAINREGULATOR_ON)
LowPower_sleep(PWR_MAINREGULATOR_ON);
#else
LowPower_sleep(0);
#endif
}

/**
Expand All @@ -84,8 +88,10 @@ void STM32LowPower::sleep(uint32_t ms)
}
#if defined(PWR_LOWPOWERREGULATOR_ON)
LowPower_sleep(PWR_LOWPOWERREGULATOR_ON);
#else
#elif defined(PWR_MAINREGULATOR_ON)
LowPower_sleep(PWR_MAINREGULATOR_ON);
#else
LowPower_sleep(0);
#endif

}
Expand All @@ -110,7 +116,7 @@ void STM32LowPower::deepSleep(uint32_t ms)
* @param ms: optional delay before leave the shutdown mode (default: 0).
* @retval None
*/
#if defined(STM32WB0x)
#if defined(STM32WB0x) || defined(STM32WL3x)
void STM32LowPower::shutdown(void)
{
LowPower_shutdown(false);
Expand Down Expand Up @@ -144,9 +150,9 @@ void STM32LowPower::attachInterruptWakeup(uint32_t pin, voidFuncPtrVoid callback
attachInterrupt(pin, callback, mode);

if ((LowPowerMode == SHUTDOWN_MODE)
#if defined(PWR_WAKEUP_PA0)
#if defined(PWR_WAKEUP_PA0) || defined(PWR_WAKEUP_PORTA)
|| (LowPowerMode == DEEP_SLEEP_MODE)
#endif /* PWR_WAKEUP1_SOURCE_SELECTION_0 */
#endif /* PWR_WAKEUP1_SOURCE_SELECTION_0 || PWR_WAKEUP_PORTA */
) {
// If Gpio is a Wake up pin activate it for shutdown (standby or shutdown stm32)
LowPower_EnableWakeUpPin(pin, mode);
Expand Down Expand Up @@ -204,7 +210,7 @@ void STM32LowPower::programRtcWakeUp(uint32_t ms, LP_Mode lp_mode)
break;
// LSI or LSE must be selected as clock source to wakeup the device.
case DEEP_SLEEP_MODE:
#if defined(RCC_RTC_WDG_BLEWKUP_CLKSOURCE_HSI64M_DIV2048)
#if defined(RCC_RTC_WDG_BLEWKUP_CLKSOURCE_HSI64M_DIV2048) || defined(RCC_RTC_WDG_SUBG_LPAWUR_LCD_LCSC_CLKSOURCE_DIV512)
clkSrc = (clkSrc == STM32RTC::HSI_CLOCK) ? STM32RTC::LSI_CLOCK : clkSrc;
#else
clkSrc = (clkSrc == STM32RTC::HSE_CLOCK) ? STM32RTC::LSI_CLOCK : clkSrc;
Expand Down
2 changes: 1 addition & 1 deletion src/STM32LowPower.h
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Expand Up @@ -80,7 +80,7 @@ class STM32LowPower {
{
deepSleep((uint32_t)ms);
}
#if defined(STM32WB0x)
#if defined(STM32WB0x) || defined(STM32WL3x)
void shutdown(void);
#else
void shutdown(uint32_t ms = 0);
Expand Down
72 changes: 69 additions & 3 deletions src/low_power.c
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Expand Up @@ -388,6 +388,72 @@ void LowPower_EnableWakeUpPin(uint32_t pin, uint32_t mode)
HAL_PWR_EnableWakeUpPin(wkup_pin, ((mode == RISING) || (mode == HIGH)) ? PWR_WUP_FALLEDG : PWR_WUP_RISIEDG);
}
}
#elif defined(PWR_WAKEUP_PORTA)
/* Get GPIO port from pinname*/
GPIO_TypeDef *port = get_GPIO_Port(STM_PORT(p));
uint32_t wkup_pin = 0;
uint32_t wkup_port = 0;
switch (STM_PIN(p)) {
case 0:
wkup_pin = PWR_WAKEUP_PIN0;
break;
case 1:
wkup_pin = PWR_WAKEUP_PIN1;
break;
case 2:
wkup_pin = PWR_WAKEUP_PIN2;
break;
case 3:
wkup_pin = PWR_WAKEUP_PIN3;
break;
case 4:
wkup_pin = PWR_WAKEUP_PIN4;
break;
case 5:
wkup_pin = PWR_WAKEUP_PIN5;
break;
case 6:
wkup_pin = PWR_WAKEUP_PIN6;
break;
case 7:
wkup_pin = PWR_WAKEUP_PIN7;
break;
case 8:
wkup_pin = PWR_WAKEUP_PIN8;
break;
case 9:
wkup_pin = PWR_WAKEUP_PIN9;
break;
case 10:
wkup_pin = PWR_WAKEUP_PIN10;
break;
case 11:
wkup_pin = PWR_WAKEUP_PIN11;
break;
case 12:
wkup_pin = PWR_WAKEUP_PIN12;
break;
case 13:
wkup_pin = PWR_WAKEUP_PIN13;
break;
case 14:
wkup_pin = PWR_WAKEUP_PIN14;
break;
case 15:
wkup_pin = PWR_WAKEUP_PIN15;
break;
default:
port = NULL;
break;
}
if (port == (GPIO_TypeDef *)GPIOA_BASE) {
wkup_port = PWR_WAKEUP_PORTA;
} else if (port == (GPIO_TypeDef *)GPIOB_BASE) {
wkup_port = PWR_WAKEUP_PORTB;
}
if (IS_PWR_WAKEUP_SOURCE(wkup_pin)) {
HAL_PWR_EnableWakeUpPin(wkup_port, wkup_pin, ((mode == RISING) || (mode == HIGH)) ? PWR_WUP_FALLEDG : PWR_WUP_RISIEDG);
}
#else
#if !defined(PWR_WAKEUP_PIN1_HIGH)
UNUSED(mode);
Expand Down Expand Up @@ -701,7 +767,7 @@ void LowPower_stop(serial_t *obj)
HAL_UARTEx_EnableStopMode(WakeUpUart);
}
#endif
#if defined(STM32WB0x)
#if defined(STM32WB0x) || defined(STM32WL3x)
__HAL_PWR_CLEAR_FLAG(PWR_FLAG_DEEPSTOPF);
__HAL_PWR_CLEAR_FLAG(PWR_FLAG_WU);
PWR_DEEPSTOPTypeDef configDEEPSTOP;
Expand Down Expand Up @@ -812,7 +878,7 @@ void LowPower_stop(serial_t *obj)
*/
void LowPower_standby()
{
#if !defined(STM32WB0x)
#if !defined(STM32WB0x) && !defined(STM32WL3x)
__disable_irq();

/* Clear wakeup flags */
Expand Down Expand Up @@ -844,7 +910,7 @@ void LowPower_standby()
LL_C2_PWR_SetPowerMode(LL_PWR_MODE_STANDBY);
#endif
HAL_PWR_EnterSTANDBYMode();
#endif /* !STM32WB0x */
#endif /* !STM32WB0x || STM32WL3x */
}

/**
Expand Down