watchdog.c

来自「A few drivers for the Motorola C380 s ce」· C语言 代码 · 共 37 行

/*
   Neptune LTE Watchdog Driver
   ----------------------------
   (c) DmT,motoprogger 2008
*/
#include "../libs/motolibs.h"
#include "rtc.h"
#include "watchdog.h"

#define WDOG_BASE 0x24849000
#define WDOG_WATCHDOG_CONTROL_REGISTER hword_ptr(WDOG_BASE+0x000)
#define WDOG_WATCHDOG_SERVICE_REGISTER hword_ptr(WDOG_BASE+0x002)
#define WDOG_WATCHDOG_RESET_STATUS_REGISTER hword_ptr(WDOG_BASE+0x004)

void wdog_service(void)
{
 WDOG_WATCHDOG_SERVICE_REGISTER=0x5555;
 WDOG_WATCHDOG_SERVICE_REGISTER=0xAAAA;
}

void wdog_assert()
{
        WDOG_WATCHDOG_CONTROL_REGISTER&=~0x20;
        while(1);
}

void wdog_reset()
{
        WDOG_WATCHDOG_CONTROL_REGISTER&=~0x10;
        while(1);
}

void wdog_init(byte timeout, bool flags)
{
        WDOG_WATCHDOG_CONTROL_REGISTER=timeout<<9|flags&WDOG_INIT_FLAGS_MASK|0x70;
}