wdt_a.c

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// wdt_a.c - Driver for the wdt_a Module.
//
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#include "inc/hw_memmap.h"
 
#ifdef __MSP430_HAS_WDT_A__
#include "wdt_a.h"
 
#include <assert.h>
 
void WDT_A_hold (uint16_t baseAddress)
{
    // Set Hold bit
    uint8_t newWDTStatus =
        ((HWREG16(baseAddress + OFS_WDTCTL) & 0x00FF) | WDTHOLD);
 
    HWREG16(baseAddress + OFS_WDTCTL) = WDTPW + newWDTStatus;
}
 
void WDT_A_start (uint16_t baseAddress)
{
    // Reset Hold bit
    uint8_t newWDTStatus =
        ((HWREG16(baseAddress + OFS_WDTCTL) & 0x00FF) & ~(WDTHOLD));
 
    HWREG16(baseAddress + OFS_WDTCTL) = WDTPW + newWDTStatus;
}
 
void WDT_A_resetTimer (uint16_t baseAddress)
{
    // Set Counter Clear bit
    uint8_t newWDTStatus =
        ((HWREG16(baseAddress + OFS_WDTCTL) & 0x00FF) | WDTCNTCL);
 
    HWREG16(baseAddress + OFS_WDTCTL) = WDTPW + newWDTStatus;
}
 
void WDT_A_initWatchdogTimer (uint16_t baseAddress,
    uint8_t clockSelect,
    uint8_t clockDivider)
{
    HWREG16(baseAddress + OFS_WDTCTL) =
        WDTPW + WDTCNTCL + WDTHOLD + clockSelect + clockDivider;
}
 
void WDT_A_initIntervalTimer (uint16_t baseAddress,
    uint8_t clockSelect,
    uint8_t clockDivider)
{
    HWREG16(baseAddress + OFS_WDTCTL) =
        WDTPW + WDTCNTCL + WDTHOLD + WDTTMSEL + clockSelect + clockDivider;
}
 
 
#endif
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