mirror of
https://github.com/DarkFlippers/unleashed-firmware
synced 2024-12-25 04:03:07 +00:00
206 lines
7.5 KiB
C
206 lines
7.5 KiB
C
/* Copyright (C) 2022-2023 Salvatore Sanfilippo -- All Rights Reserved
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* See the LICENSE file for information about the license. */
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#include "app.h"
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#include "custom_presets.h"
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#include <flipper_format/flipper_format_i.h>
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#include <furi_hal_rtc.h>
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#include <furi_hal_spi.h>
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#include <furi_hal_interrupt.h>
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void raw_sampling_timer_start(ProtoViewApp* app);
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void raw_sampling_timer_stop(ProtoViewApp* app);
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ProtoViewModulation ProtoViewModulations[] = {
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{"OOK 650Khz", "FuriHalSubGhzPresetOok650Async", FuriHalSubGhzPresetOok650Async, NULL, 30},
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{"OOK 270Khz", "FuriHalSubGhzPresetOok270Async", FuriHalSubGhzPresetOok270Async, NULL, 30},
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{"2FSK 2.38Khz",
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"FuriHalSubGhzPreset2FSKDev238Async",
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FuriHalSubGhzPreset2FSKDev238Async,
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NULL,
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30},
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{"2FSK 47.6Khz",
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"FuriHalSubGhzPreset2FSKDev476Async",
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FuriHalSubGhzPreset2FSKDev476Async,
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NULL,
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30},
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{"TPMS 1 (FSK)", NULL, 0, (uint8_t*)protoview_subghz_tpms1_fsk_async_regs, 30},
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{"TPMS 2 (OOK)", NULL, 0, (uint8_t*)protoview_subghz_tpms2_ook_async_regs, 30},
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{"TPMS 3 (GFSK)", NULL, 0, (uint8_t*)protoview_subghz_tpms3_gfsk_async_regs, 30},
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{"OOK 40kBaud", NULL, 0, (uint8_t*)protoview_subghz_40k_ook_async_regs, 15},
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{"FSK 40kBaud", NULL, 0, (uint8_t*)protoview_subghz_40k_fsk_async_regs, 15},
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{NULL, NULL, 0, NULL, 0} /* End of list sentinel. */
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};
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/* Called after the application initialization in order to setup the
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* subghz system and put it into idle state. */
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void radio_begin(ProtoViewApp* app) {
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furi_assert(app);
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subghz_devices_reset(app->radio_device);
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subghz_devices_idle(app->radio_device);
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/* The CC1101 preset can be either one of the standard presets, if
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* the modulation "custom" field is NULL, or a custom preset we
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* defined in custom_presets.h. */
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if(ProtoViewModulations[app->modulation].custom == NULL) {
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subghz_devices_load_preset(
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app->radio_device, ProtoViewModulations[app->modulation].preset, NULL);
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} else {
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subghz_devices_load_preset(
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app->radio_device,
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FuriHalSubGhzPresetCustom,
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ProtoViewModulations[app->modulation].custom);
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}
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furi_hal_gpio_init(
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subghz_devices_get_data_gpio(app->radio_device), GpioModeInput, GpioPullNo, GpioSpeedLow);
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app->txrx->txrx_state = TxRxStateIDLE;
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}
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/* ================================= Reception ============================== */
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/* We avoid the subghz provided abstractions and put the data in our
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* simple abstraction: the RawSamples circular buffer. */
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void protoview_rx_callback(bool level, uint32_t duration, void* context) {
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UNUSED(context);
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/* Add data to the circular buffer. */
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raw_samples_add(RawSamples, level, duration);
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// FURI_LOG_E(TAG, "FEED: %d %d", (int)level, (int)duration);
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return;
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}
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/* Setup the CC1101 to start receiving using a background worker. */
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uint32_t radio_rx(ProtoViewApp* app) {
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furi_assert(app);
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if(!subghz_devices_is_frequency_valid(app->radio_device, app->frequency)) {
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furi_crash(TAG " Incorrect RX frequency.");
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}
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if(app->txrx->txrx_state == TxRxStateRx) return app->frequency;
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subghz_devices_idle(app->radio_device); /* Put it into idle state in case it is sleeping. */
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uint32_t value = subghz_devices_set_frequency(app->radio_device, app->frequency);
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FURI_LOG_E(TAG, "Switched to frequency: %lu", value);
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subghz_devices_flush_rx(app->radio_device);
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subghz_devices_set_rx(app->radio_device);
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if(!app->txrx->debug_timer_sampling) {
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subghz_devices_start_async_rx(app->radio_device, protoview_rx_callback, NULL);
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} else {
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furi_hal_gpio_init(
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subghz_devices_get_data_gpio(app->radio_device),
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GpioModeInput,
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GpioPullNo,
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GpioSpeedLow);
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raw_sampling_worker_start(app);
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}
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app->txrx->txrx_state = TxRxStateRx;
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return value;
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}
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/* Stop receiving (if active) and put the radio on idle state. */
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void radio_rx_end(ProtoViewApp* app) {
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furi_assert(app);
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if(app->txrx->txrx_state == TxRxStateRx) {
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if(!app->txrx->debug_timer_sampling) {
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subghz_devices_stop_async_rx(app->radio_device);
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} else {
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raw_sampling_worker_stop(app);
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}
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}
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subghz_devices_idle(app->radio_device);
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app->txrx->txrx_state = TxRxStateIDLE;
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}
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/* Put radio on sleep. */
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void radio_sleep(ProtoViewApp* app) {
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furi_assert(app);
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if(app->txrx->txrx_state == TxRxStateRx) {
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/* Stop the asynchronous receiving system before putting the
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* chip into sleep. */
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radio_rx_end(app);
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}
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subghz_devices_sleep(app->radio_device);
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app->txrx->txrx_state = TxRxStateSleep;
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}
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/* =============================== Transmission ============================= */
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/* This function suspends the current RX state, switches to TX mode,
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* transmits the signal provided by the callback data_feeder, and later
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* restores the RX state if there was one. */
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void radio_tx_signal(ProtoViewApp* app, FuriHalSubGhzAsyncTxCallback data_feeder, void* ctx) {
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TxRxState oldstate = app->txrx->txrx_state;
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if(oldstate == TxRxStateRx) radio_rx_end(app);
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radio_begin(app);
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subghz_devices_idle(app->radio_device);
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uint32_t value = subghz_devices_set_frequency(app->radio_device, app->frequency);
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FURI_LOG_E(TAG, "Switched to frequency: %lu", value);
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subghz_devices_start_async_tx(app->radio_device, data_feeder, ctx);
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while(!subghz_devices_is_async_complete_tx(app->radio_device)) furi_delay_ms(10);
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subghz_devices_stop_async_tx(app->radio_device);
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subghz_devices_idle(app->radio_device);
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radio_begin(app);
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if(oldstate == TxRxStateRx) radio_rx(app);
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}
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/* ============================= Raw sampling mode =============================
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* This is a special mode that uses a high frequency timer to sample the
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* CC1101 pin directly. It's useful for debugging purposes when we want
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* to get the raw data from the chip and completely bypass the subghz
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* Flipper system.
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* ===========================================================================*/
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void protoview_timer_isr(void* ctx) {
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ProtoViewApp* app = ctx;
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bool level = furi_hal_gpio_read(subghz_devices_get_data_gpio(app->radio_device));
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if(app->txrx->last_g0_value != level) {
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uint32_t now = DWT->CYCCNT;
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uint32_t dur = now - app->txrx->last_g0_change_time;
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dur /= furi_hal_cortex_instructions_per_microsecond();
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if(dur > 15000) dur = 15000;
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raw_samples_add(RawSamples, app->txrx->last_g0_value, dur);
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app->txrx->last_g0_value = level;
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app->txrx->last_g0_change_time = now;
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}
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LL_TIM_ClearFlag_UPDATE(TIM2);
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}
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void raw_sampling_worker_start(ProtoViewApp* app) {
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UNUSED(app);
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furi_hal_bus_enable(FuriHalBusTIM2);
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LL_TIM_InitTypeDef tim_init = {
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.Prescaler = 63, /* CPU frequency is ~64Mhz. */
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.CounterMode = LL_TIM_COUNTERMODE_UP,
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.Autoreload = 5, /* Sample every 5 us */
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};
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LL_TIM_Init(TIM2, &tim_init);
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LL_TIM_SetClockSource(TIM2, LL_TIM_CLOCKSOURCE_INTERNAL);
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LL_TIM_DisableCounter(TIM2);
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LL_TIM_SetCounter(TIM2, 0);
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furi_hal_interrupt_set_isr(FuriHalInterruptIdTIM2, protoview_timer_isr, app);
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LL_TIM_EnableIT_UPDATE(TIM2);
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LL_TIM_EnableCounter(TIM2);
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FURI_LOG_E(TAG, "Timer enabled");
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}
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void raw_sampling_worker_stop(ProtoViewApp* app) {
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UNUSED(app);
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FURI_CRITICAL_ENTER();
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LL_TIM_DisableCounter(TIM2);
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LL_TIM_DisableIT_UPDATE(TIM2);
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furi_hal_interrupt_set_isr(FuriHalInterruptIdTIM2, NULL, NULL);
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furi_hal_bus_disable(FuriHalBusTIM2);
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FURI_CRITICAL_EXIT();
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}
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