From c249c7f772d0108800ac39a9abbacf75825814db Mon Sep 17 00:00:00 2001 From: Thomas Otto Date: Sun, 2 May 2010 21:03:15 +0200 Subject: Added initial IWDG definitions. --- include/libopenstm32/iwdg.h | 75 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 75 insertions(+) create mode 100644 include/libopenstm32/iwdg.h (limited to 'include/libopenstm32') diff --git a/include/libopenstm32/iwdg.h b/include/libopenstm32/iwdg.h new file mode 100644 index 0000000..609b565 --- /dev/null +++ b/include/libopenstm32/iwdg.h @@ -0,0 +1,75 @@ +/* + * This file is part of the libopenstm32 project. + * + * Copyright (C) 2010 Thomas Otto + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +#ifndef LIBOPENSTM32_IWDG_H +#define LIBOPENSTM32_IWDG_H + +#include +#include + +/* --- IWDG registers ------------------------------------------------------ */ + +/* Key Register (IWDG_KR) */ +#define IWDG_KR MMIO32(iwdg_base + 0x00) + +/* Prescaler register (IWDG_PR) */ +#define IWDG_PR MMIO32(iwdg_base + 0x04) + +/* Reload register (IWDG_RLR) */ +#define IWDG_RLR MMIO32(iwdg_base + 0x08) + +/* Status register (IWDG_SR) */ +#define IWDG_SR MMIO32(iwdg_base + 0x0C) + + +/* --- IWDG_KR values ------------------------------------------------------ */ + +/* KEY[15:0]: Key value */ +#define IWDG_KR_RESET 0xAAAA +#define IWDG_KR_UNLOCK 0x5555 +#define IWDG_KR_START 0xCCCC + +/* --- IWDG_PR values ------------------------------------------------------ */ + +/* PR[2:0]: Prescaler divider */ +#define IWDG_PR_LSB 0 +#define IWDG_PR_DIV4 0x0 +#define IWDG_PR_DIV8 0x1 +#define IWDG_PR_DIV16 0x2 +#define IWDG_PR_DIV32 0x3 +#define IWDG_PR_DIV64 0x4 +#define IWDG_PR_DIV128 0x5 +#define IWDG_PR_DIV256 0x6 +#define IWDG_PR_DIV256 0x7 + +/* --- IWDG_RLR values ----------------------------------------------------- */ + +/* RL[11:0]: Watchdog counter reload value */ + +/* --- IWDG_SR values ------------------------------------------------------ */ + +/* RVU: Watchdog counter reload value update */ +#define IWDG_SR_RVU (1 << 1) + +/* PVU: Watchdog prescaler value update */ +#define IWDG_SR_PVU (1 << 0) + +/* --- IWDG funtion prototypes---------------------------------------------- */ + +#endif -- cgit v1.2.3