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HAL_ChibiOS: record reason for reset 

allows us to tell if reset was due to watchdog
This commit is contained in:
Andrew Tridgell 2019-04-11 19:50:46 +10:00
parent 272c277056
commit a5309b3afa
3 changed files with 61 additions and 2 deletions
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2
libraries/AP_HAL_ChibiOS/hwdef/common/board.c
View File

@ -18,6 +18,7 @@
#include "hal.h"
#include "usbcfg.h"
#include "stm32_util.h"
#include "watchdog.h"
/*===========================================================================*/
@ -233,6 +234,7 @@ void __early_init(void) {
void __late_init(void) {
halInit();
chSysInit();
stm32_watchdog_save_reason();
#if CH_CFG_USE_HEAP == TRUE
malloc_init();
#endif

51
libraries/AP_HAL_ChibiOS/hwdef/common/watchdog.c
View File

@ -8,13 +8,38 @@
#ifndef IWDG_BASE
#if defined(STM32H7)
#define IWDG_BASE 0x58004800
#elif defined(STM32F7) || defined(STM32F4) || defined(STM32F1)
#elif defined(STM32F7) || defined(STM32F4)
#define IWDG_BASE 0x40003000
#elif defined(STM32F1)
#define IWDG_BASE 0x40003000
#else
#error "Unknown IWDG_BASE"
#error "Unsupported IWDG MCU config"
#endif
#endif
#ifndef RCC_BASE
#error "Unsupported IWDG RCC MCU config"
#endif
/*
defines for working out if the reset was from the watchdog
*/
#if defined(STM32H7)
#define WDG_RESET_STATUS (*(__IO uint32_t *)(RCC_BASE + ))
#define WDG_RESET_CLEAR (1U<<16)
#define WDG_RESET_IS_IWDG (1U<<26)
#elif defined(STM32F7) || defined(STM32F4)
#define WDG_RESET_STATUS (*(__IO uint32_t *)(RCC_BASE + 0x74))
#define WDG_RESET_CLEAR (1U<<24)
#define WDG_RESET_IS_IWDG (1U<<29)
#elif defined(STM32F1)
#define WDG_RESET_STATUS (*(__IO uint32_t *)(RCC_BASE + 0x24))
#define WDG_RESET_CLEAR (1U<<24)
#define WDG_RESET_IS_IWDG (1U<<29)
#else
#error "Unsupported IWDG MCU config"
#endif
typedef struct
{
__IO uint32_t KR; /*!< IWDG Key register, Address offset: 0x00 */
@ -46,3 +71,25 @@ void stm32_watchdog_pat(void)
{
IWDGD.KR = 0xAAAA;
}
static bool was_watchdog_reset;
/*
save reason code for reset
*/
void stm32_watchdog_save_reason(void)
{
if (WDG_RESET_STATUS & WDG_RESET_IS_IWDG) {
was_watchdog_reset = true;
}
WDG_RESET_STATUS = WDG_RESET_CLEAR;
}
/*
return true if reboot was from a watchdog reset
*/
bool stm32_was_watchdog_reset(void)
{
return was_watchdog_reset;
}

10
libraries/AP_HAL_ChibiOS/hwdef/common/watchdog.h
View File

@ -14,6 +14,16 @@ void stm32_watchdog_init(void);
*/
void stm32_watchdog_pat(void);
/*
return true if reboot was from a watchdog reset
*/
bool stm32_was_watchdog_reset(void);
/*
save the reset reason code
*/
void stm32_watchdog_save_reason(void);
#ifdef __cplusplus
}
#endif