2022-04-21 16:15:19 +03:00
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#pragma once
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#include <stm32wbxx_ll_lptim.h>
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#include <stm32wbxx_ll_rcc.h>
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2023-05-29 19:05:57 +03:00
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#include <stm32wbxx_ll_bus.h>
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#include <furi_hal_bus.h>
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2022-04-21 16:15:19 +03:00
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// Timer used for tickless idle
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#define FURI_HAL_IDLE_TIMER_MAX 0xFFFF
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[FL-2399, FL-2261] Tickless sleep shenanigans (#1168)
* Disable USART in sleep
* Restore UART state on suspend/resume
* FuriHal: Enable stop mode and add insomnia to I2C and SPI
* Remove IDLE interrupt
* FuriHal: add FPU isr and disable all FPU interrupt, add core2 stop mode configuration on deep sleep
* FuriHal: tie stop mode debug with debug rtc flag
* FuriHal: adjust flash latency on clock switch, tie mcu debug with RTC debug flag
* FuriHal: move resource init to early stage
* Add EXTI pending check, enable debug traps with compile-time flag
* Wrap sleep debug functions in conditional compilation
* Remove erroneous changed
* Do not use CSS, remove it from everywhere
* Enable/disable USB on VBUS connect (prototype)
* FuriHal: add LPMS and DEEPSLEEP magic, workaround state inconsistency between cores
* FuriHal: honor c1 LMPS
* USB mode switch fix
* Applications: add flags and insomnia bypass system
* Correct spelling
* FuriHal: cleanup insomnia usage, reset sleep flags on wakeup, add shutdown api
* FuriHal: extra check on reinit request
* FuriHal: rename gpio_display_rst pin to gpio_display_rst_n
* FuriHal: add debug HAL
* FuriHal: add some magic to core2 reload procedure, fix issue with crash on ble keyboard exit
* FuriHal: cleanup ble glue, add BLE_GLUE_DEBUG flag
* FuriHal: ble reinit API, move os timer to LPTIM1 for deep sleep capability, shutdown that works
* FuriHal: take insomnia while shutdown
* Remove USB switch on/off on VBUS change
* Better tick skew handling
* Improve tick consistency under load
* Add USB_HP dummy IRQ handler
* Move interrupt check closer to sleep
* Clean up includes
* Re-enable Insomnia globally
* FuriHal: enable CSS
* FuriHal: remove questionable core2 clock shenanigans
* FuriHal: use core1 RCC registers in idle timer config
* FuriHal: return back CSS handlers, add lptim isr dispatching
Co-authored-by: Aleksandr Kutuzov <alleteam@gmail.com>
Co-authored-by: nminaylov <nm29719@gmail.com>
2022-04-29 16:29:51 +03:00
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#define FURI_HAL_IDLE_TIMER LPTIM1
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#define FURI_HAL_IDLE_TIMER_IRQ LPTIM1_IRQn
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2022-04-21 16:15:19 +03:00
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static inline void furi_hal_idle_timer_init() {
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2023-05-29 19:05:57 +03:00
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furi_hal_bus_enable(FuriHalBusLPTIM1);
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2022-04-21 16:15:19 +03:00
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// Configure clock source
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[FL-2399, FL-2261] Tickless sleep shenanigans (#1168)
* Disable USART in sleep
* Restore UART state on suspend/resume
* FuriHal: Enable stop mode and add insomnia to I2C and SPI
* Remove IDLE interrupt
* FuriHal: add FPU isr and disable all FPU interrupt, add core2 stop mode configuration on deep sleep
* FuriHal: tie stop mode debug with debug rtc flag
* FuriHal: adjust flash latency on clock switch, tie mcu debug with RTC debug flag
* FuriHal: move resource init to early stage
* Add EXTI pending check, enable debug traps with compile-time flag
* Wrap sleep debug functions in conditional compilation
* Remove erroneous changed
* Do not use CSS, remove it from everywhere
* Enable/disable USB on VBUS connect (prototype)
* FuriHal: add LPMS and DEEPSLEEP magic, workaround state inconsistency between cores
* FuriHal: honor c1 LMPS
* USB mode switch fix
* Applications: add flags and insomnia bypass system
* Correct spelling
* FuriHal: cleanup insomnia usage, reset sleep flags on wakeup, add shutdown api
* FuriHal: extra check on reinit request
* FuriHal: rename gpio_display_rst pin to gpio_display_rst_n
* FuriHal: add debug HAL
* FuriHal: add some magic to core2 reload procedure, fix issue with crash on ble keyboard exit
* FuriHal: cleanup ble glue, add BLE_GLUE_DEBUG flag
* FuriHal: ble reinit API, move os timer to LPTIM1 for deep sleep capability, shutdown that works
* FuriHal: take insomnia while shutdown
* Remove USB switch on/off on VBUS change
* Better tick skew handling
* Improve tick consistency under load
* Add USB_HP dummy IRQ handler
* Move interrupt check closer to sleep
* Clean up includes
* Re-enable Insomnia globally
* FuriHal: enable CSS
* FuriHal: remove questionable core2 clock shenanigans
* FuriHal: use core1 RCC registers in idle timer config
* FuriHal: return back CSS handlers, add lptim isr dispatching
Co-authored-by: Aleksandr Kutuzov <alleteam@gmail.com>
Co-authored-by: nminaylov <nm29719@gmail.com>
2022-04-29 16:29:51 +03:00
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LL_RCC_SetLPTIMClockSource(LL_RCC_LPTIM1_CLKSOURCE_LSE);
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// There is a theoretical possibility that we need it
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LL_APB1_GRP1_EnableClockSleep(LL_APB1_GRP1_PERIPH_LPTIM1);
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2022-04-21 16:15:19 +03:00
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// Set interrupt priority and enable them
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NVIC_SetPriority(
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FURI_HAL_IDLE_TIMER_IRQ, NVIC_EncodePriority(NVIC_GetPriorityGrouping(), 15, 0));
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NVIC_EnableIRQ(FURI_HAL_IDLE_TIMER_IRQ);
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}
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static inline void furi_hal_idle_timer_start(uint32_t count) {
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count--;
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// Enable timer
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LL_LPTIM_Enable(FURI_HAL_IDLE_TIMER);
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while(!LL_LPTIM_IsEnabled(FURI_HAL_IDLE_TIMER))
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;
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// Enable compare match interrupt
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LL_LPTIM_EnableIT_CMPM(FURI_HAL_IDLE_TIMER);
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// Set compare, autoreload and start counter
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// Include some marging to workaround ARRM behaviour
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LL_LPTIM_SetCompare(FURI_HAL_IDLE_TIMER, count - 3);
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LL_LPTIM_SetAutoReload(FURI_HAL_IDLE_TIMER, count);
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LL_LPTIM_StartCounter(FURI_HAL_IDLE_TIMER, LL_LPTIM_OPERATING_MODE_ONESHOT);
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}
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static inline void furi_hal_idle_timer_reset() {
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// Hard reset timer
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// THE ONLY RELIABLE WAY to stop it according to errata
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furi_hal_bus_reset(FuriHalBusLPTIM1);
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2022-04-21 16:15:19 +03:00
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// Prevent IRQ handler call
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NVIC_ClearPendingIRQ(FURI_HAL_IDLE_TIMER_IRQ);
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}
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static inline uint32_t furi_hal_idle_timer_get_cnt() {
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uint32_t counter = LL_LPTIM_GetCounter(FURI_HAL_IDLE_TIMER);
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uint32_t counter_shadow = LL_LPTIM_GetCounter(FURI_HAL_IDLE_TIMER);
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while(counter != counter_shadow) {
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counter = counter_shadow;
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counter_shadow = LL_LPTIM_GetCounter(FURI_HAL_IDLE_TIMER);
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}
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return counter;
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}
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