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stm32/iwdg.h: Document reserved bits.

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This commit is contained in:
Uwe Hermann 2011-11-11 21:50:18 +01:00
parent 581084dd39
commit 6967a02576
1 changed files with 14 additions and 4 deletions
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18
include/libopencm3/stm32/iwdg.h
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@ -35,17 +35,21 @@
#define IWDG_RLR MMIO32(IWDG_BASE + 0x08)
/* Status register (IWDG_SR) */
#define IWDG_SR MMIO32(IWDG_BASE + 0x0C)
#define IWDG_SR MMIO32(IWDG_BASE + 0x0c)
/* --- IWDG_KR values ------------------------------------------------------ */
/* KEY[15:0]: Key value */
#define IWDG_KR_RESET 0xAAAA
/* Bits [31:16]: Reserved. */
/* KEY[15:0]: Key value (write-only, reads as 0x0000) */
#define IWDG_KR_RESET 0xaaaa
#define IWDG_KR_UNLOCK 0x5555
#define IWDG_KR_START 0xCCCC
#define IWDG_KR_START 0xcccc
/* --- IWDG_PR values ------------------------------------------------------ */
/* Bits [31:3]: Reserved. */
/* PR[2:0]: Prescaler divider */
#define IWDG_PR_LSB 0
#define IWDG_PR_DIV4 0x0
@ -60,10 +64,14 @@
/* --- IWDG_RLR values ----------------------------------------------------- */
/* Bits [31:12]: Reserved. */
/* RL[11:0]: Watchdog counter reload value */
/* --- IWDG_SR values ------------------------------------------------------ */
/* Bits [31:2]: Reserved. */
/* RVU: Watchdog counter reload value update */
#define IWDG_SR_RVU (1 << 1)
@ -72,4 +80,6 @@
/* --- IWDG funtion prototypes---------------------------------------------- */
/* TODO */
#endif