mirror of https://github.com/ArduPilot/ardupilot
HAL_ChibiOS: added ability to restore safety state on watchdog reset
# Conflicts: # libraries/AP_HAL_ChibiOS/hwdef/common/stm32_util.c
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92f12deb51
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@ -20,6 +20,7 @@
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#include <AP_HAL/utility/RingBuffer.h>
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#include "GPIO.h"
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#include "hwdef/common/stm32_util.h"
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#include "hwdef/common/watchdog.h"
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#if HAL_USE_PWM == TRUE
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@ -1330,9 +1331,14 @@ AP_HAL::Util::safety_state RCOutput::_safety_switch_state(void)
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{
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#if HAL_WITH_IO_MCU
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if (AP_BoardConfig::io_enabled()) {
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return iomcu.get_safety_switch_state();
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safety_state = iomcu.get_safety_switch_state();
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}
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#endif
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if (safety_state == AP_HAL::Util::SAFETY_ARMED) {
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stm32_set_backup_safety_state(false);
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} else if (safety_state == AP_HAL::Util::SAFETY_DISARMED) {
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stm32_set_backup_safety_state(true);
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}
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return safety_state;
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}
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@ -63,6 +63,11 @@ public:
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// return true if the reason for the reboot was a watchdog reset
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bool was_watchdog_reset() const override { return stm32_was_watchdog_reset(); }
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// return true if safety was off and this was a watchdog reset
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bool was_watchdog_safety_off() const override {
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return stm32_was_watchdog_reset() && stm32_get_boot_backup_safety_state() == false;
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}
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private:
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#ifdef HAL_PWM_ALARM
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@ -252,6 +252,29 @@ void set_fast_reboot(enum rtc_boot_magic v)
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set_rtc_backup0(v);
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}
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// get RTC backup register 1
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uint32_t get_rtc_backup1(void)
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{
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return RTC->BKP1R;
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}
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// set RTC backup register 1
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void set_rtc_backup1(uint32_t v)
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{
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if ((RCC->BDCR & RCC_BDCR_RTCEN) == 0) {
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RCC->BDCR |= STM32_RTCSEL;
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RCC->BDCR |= RCC_BDCR_RTCEN;
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}
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#ifdef PWR_CR_DBP
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PWR->CR |= PWR_CR_DBP;
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#else
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PWR->CR1 |= PWR_CR1_DBP;
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#endif
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RTC->BKP1R = v;
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}
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#endif //NO_FASTBOOT
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/*
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enable peripheral power if needed This is done late to prevent
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problems with CTS causing SiK radios to stay in the bootloader. A
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@ -79,6 +79,12 @@ void malloc_init(void);
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iomode_t palReadLineMode(ioline_t line);
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#endif
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// get RTC backup register 1
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uint32_t get_rtc_backup1(void);
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// set RTC backup register 1
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void set_rtc_backup1(uint32_t v);
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#ifdef __cplusplus
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}
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#endif
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@ -4,6 +4,7 @@
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#include "hal.h"
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#include "watchdog.h"
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#include "stm32_util.h"
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#ifndef IWDG_BASE
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#if defined(STM32H7)
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@ -53,6 +54,7 @@ typedef struct
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static bool was_watchdog_reset;
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static bool watchdog_enabled;
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static bool boot_safety_state;
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/*
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setup the watchdog
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@ -85,6 +87,7 @@ void stm32_watchdog_save_reason(void)
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{
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if (WDG_RESET_STATUS & WDG_RESET_IS_IWDG) {
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was_watchdog_reset = true;
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boot_safety_state = stm32_get_backup_safety_state();
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}
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}
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@ -104,3 +107,35 @@ bool stm32_was_watchdog_reset(void)
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return was_watchdog_reset;
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}
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/*
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set the safety state in backup register
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This is stored so that the safety state can be restored after a
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watchdog reset
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*/
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void stm32_set_backup_safety_state(bool safety_on)
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{
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uint32_t v = get_rtc_backup1();
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uint32_t v2 = safety_on?(v|1):(v&~1);
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if (v != v2) {
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set_rtc_backup1(v2);
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}
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}
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/*
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get the safety state in backup register
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return true if safety is marked as safety on
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*/
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bool stm32_get_backup_safety_state(void)
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{
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uint32_t v = get_rtc_backup1();
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return (v&1) != 0;
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}
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/*
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get the safety state in backup register from initial boot
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*/
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bool stm32_get_boot_backup_safety_state(void)
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{
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return boot_safety_state;
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}
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@ -28,6 +28,22 @@ void stm32_watchdog_save_reason(void);
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clear reset reason code
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*/
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void stm32_watchdog_clear_reason(void);
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/*
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set the safety state in backup register
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*/
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void stm32_set_backup_safety_state(bool safety_on);
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/*
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get the safety state in backup register
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return true if safety is marked as safety on
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*/
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bool stm32_get_backup_safety_state(void);
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/*
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get the safety state in backup register from initial boot
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*/
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bool stm32_get_boot_backup_safety_state(void);
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#ifdef __cplusplus
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}
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