53 lines
1.0 KiB
C
53 lines
1.0 KiB
C
//---
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// gint:mpu:wdt - Watchdog Timer
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//---
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#ifndef GINT_MPU_WDT
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#define GINT_MPU_WDT
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <gint/defs/attributes.h>
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#include <gint/defs/types.h>
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//---
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// SH7705 WatchDog Timer. Refer to:
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// "Renesas SH7705 Group Hardware Manual"
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// Section 10: "WatchDog Timer (WDT)"
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//---
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/* sh7705_wdt_t - Watch Dog Timer */
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typedef volatile struct
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{
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/* WDT registers are unique in access size; reads are performed with
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8-bit accesses, but writes are performed with 16-bit accesses. */
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union {
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uint8_t READ;
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uint16_t WRITE;
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} WTCNT;
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union {
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byte_union(READ,
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uint8_t TME :1; /* Timer Enable */
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uint8_t WTIT :1; /* Watchdog/Interval Select */
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uint8_t RSTS :1; /* Watchdog Reset Select */
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uint8_t WOVF :1; /* Watchdog Overflow Flag */
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uint8_t IOVF :1; /* Interval Overflow Flag */
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uint8_t CKS :3; /* Clock Select */
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);
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uint16_t WRITE;
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} WTCSR;
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} sh7705_wdt_t;
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#define SH7705_WDT (*((sh7705_wdt_t *)0xffffff84))
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#ifdef __cplusplus
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}
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#endif
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#endif /* GINT_MPU_WDT */
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