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| author | Kevin O'Connor <kevin@koconnor.net> | 2019-07-26 08:36:11 -0400 |
|---|---|---|
| committer | Kevin O'Connor <kevin@koconnor.net> | 2019-07-26 08:36:11 -0400 |
| commit | 73709984b0eba1282473751427daa160e1a5c9f4 (patch) | |
| tree | a88e901803ef7459c5023e946b895ea8481f68d4 /src/stm32f4/watchdog.c | |
| parent | 899b6726fa0eada0253bccb72cab7c3b61274076 (diff) | |
| download | kutter-73709984b0eba1282473751427daa160e1a5c9f4.tar.gz kutter-73709984b0eba1282473751427daa160e1a5c9f4.tar.xz kutter-73709984b0eba1282473751427daa160e1a5c9f4.zip | |
stm32f4: Add support for watchdog
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Diffstat (limited to 'src/stm32f4/watchdog.c')
| -rw-r--r-- | src/stm32f4/watchdog.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/src/stm32f4/watchdog.c b/src/stm32f4/watchdog.c new file mode 100644 index 00000000..1f642616 --- /dev/null +++ b/src/stm32f4/watchdog.c @@ -0,0 +1,25 @@ +// Watchdog handler on STM32F4 +// +// Copyright (C) 2019 Kevin O'Connor <kevin@koconnor.net> +// +// This file may be distributed under the terms of the GNU GPLv3 license. + +#include "internal.h" // IWDG +#include "sched.h" // DECL_TASK + +void +watchdog_reset(void) +{ + IWDG->KR = 0xAAAA; +} +DECL_TASK(watchdog_reset); + +void +watchdog_init(void) +{ + IWDG->KR = 0x5555; + IWDG->PR = 0; + IWDG->RLR = 0x0FFF; // 512ms timeout + IWDG->KR = 0xCCCC; +} +DECL_INIT(watchdog_init); |