Initial commit: TXW82x FPV v2.7.0.7-42229 SDK + project sources
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129
csky/csi_kernel/rhino/board/board_cpu_pwr_rtc.c
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129
csky/csi_kernel/rhino/board/board_cpu_pwr_rtc.c
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/*
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* Copyright (C) 2018 Alibaba Group Holding Limited
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*/
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/*
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* This file supplied RTC one-shot start/stop services for CPU tickless
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* module, verifyied on STM32L496-DISCOVERY with C3/C4 mode.
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* C3: stop mode.
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* C4: standby mode.
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*/
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#include "k_api.h"
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#include "cpu_pwr_config.h"
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//#if (RHINO_CONFIG_CPU_PWR_MGMT > 0)
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//#if (RHINO_CONFIG_CPU_TICKLESS > 0)
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#include "cpu_tickless.h"
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#include "drv_rtc.h"
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#define RTC_ONE_SHOT_DBG
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extern void SystemClock_Config(void);
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#define RTC_WAKEUP_SOURCE_FREQ_2000HZ
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//#define RTC_WAKEUP_SOURCE_FREQ_1HZ
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/* According reference manual of STM32496G, RTC_WUTR is 16bit */
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#define RTC_WAKE_UP_RGE_MAX 0xffff
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//static uint32_t one_shot_enabled = 0;
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//static uint32_t one_shot_start_value = 0;
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static uint32_t one_shot_max_period = 0;/* seconds */
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//static kspinlock_t rtc_spin;
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//static RTC_HandleTypeDef RtcHandle;
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#ifdef RTC_ONE_SHOT_DBG
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//static int rtc_wakeup_irq_count = 0;
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#endif /* RTC_ONE_SHOT_DBG */
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static kstat_t rtc_init(void);
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static uint32_t rtc_one_shot_max_seconds(void);
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static kstat_t rtc_one_shot_start(uint64_t planUs);
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static kstat_t rtc_one_shot_stop(uint64_t *pPassedUs);
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one_shot_timer_t rtc_one_shot = {
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rtc_init,
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rtc_one_shot_max_seconds,
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rtc_one_shot_start,
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rtc_one_shot_stop,
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};
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static uint32_t rtc_one_shot_max_seconds(void)
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{
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return one_shot_max_period;
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}
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static kstat_t rtc_init(void)
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{
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return RHINO_SUCCESS;
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}
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/*******************************************************************************
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*
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* rtc_one_shot_start - enable the timer in oneshot mode
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*
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* This function enables the timer in oneshot mode, the interrupt will be fired
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* after servral microseconds which is indicated by planUs.
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*
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* RETURNS: RHINO_SUCCESS or RHINO_PWR_MGMT_ERR if timer is not enabled
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*
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* ERRNO
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*/
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static kstat_t rtc_one_shot_start(uint64_t planUs)
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{
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return RHINO_SUCCESS;
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}
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/*******************************************************************************
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*
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* one_shot_planed_cnt - cancel the timer which was in oneshot mode
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*
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* This function is called to cancel the timer which was in oneshot mode.
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* the time has passed(microseconds) will be return in pPassedUs.
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*
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* RETURNS: RHINO_SUCCESS or RHINO_PWR_MGMT_ERR if timer is not disabled
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*
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* ERRNO: N/A
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*/
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static kstat_t rtc_one_shot_stop
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(
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uint64_t *pPassedUs /* OUT */
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)
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{
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return RHINO_SUCCESS;
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}
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/*******************************************************************************
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*
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* RTC_WKUP_IRQHandler - ISR handle of RTC wakeup interrupt
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*
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* This function will replace weak one which is defined in
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* startup_stm32l496xx_keil.s
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*
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* RETURNS: N/A
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*
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* ERRNO: N/A
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*/
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void RTC_WKUP_IRQHandler(void)
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{
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}
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#ifdef RTC_ONE_SHOT_DBG
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void rtc_info_show(void)
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{
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}
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#endif /* RTC_ONE_SHOT_DBG */
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//#endif /* RHINO_CONFIG_CPU_TICKLESS */
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//#endif /* RHINO_CONFIG_CPU_PWR_MGMT */
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