xc_drv_wdt.c

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/*------------------------------------------------------------------------------------
                                 INCLUDE HEADE FILES
--------------------------------------------------------------------------------------*/
#include "xc_drv_wdt.h"
 
/*------------------------------------------------------------------------------------
                                    Local Variables
 -------------------------------------------------------------------------------------*/
static uint8_t reload_val ;
/*------------------------------------------------------------------------------------
                                    Func Prototype
 -------------------------------------------------------------------------------------*/
 
/*------------------------------------------------------------------------------------
                                    Functions
-------------------------------------------------------------------------------------*/
 
void xc_wdt_init(WDT_InitCfg_t *wdt_cfg)
{
    cpr_ctlapbclken_grctl__wdt_pclk_en__setf(ENABLE);
    cpr_rstctl_ctlapb_sw__wdt_rstn__setf(RSTCTL_ENABLE);
    cpr_rstctl_ctlapb_sw__wdt_rstn__setf(RSTCTL_DISABLE);
 
    /*
    SYS_DISABLE | M0_ENABLE :    SYS RST, for low-power reset or quick system reset;
    SYS_ENABLE  | M0_DISABLE:    M0 RST,  only for m0 reset;
    SYS_DISABLE | M0_DISABLE:    M0 RST,  m0 reset and low-power reset;
    */
    cpr_rstctl_wdtrst_mask_set(
        (WDT_SYS_RSTN_MASK_DISABLE | WDT_M0_RSTN_MASK_DISABLE));
    cpr_lp_ctl__wdt_pclk_sel__setf(wdt_cfg->PclkSel);
    cpr_lp_ctl__wdt_tclk_en__setf(ENABLE);
 
    wdt_cr__wdt_rmod__setf(wdt_cfg->WorkMode);
    wdt_torr__wdt_top__setf(wdt_cfg->ReloadValue);
    reload_val = wdt_cfg->ReloadValue;
}
 
void xc_wdt_start(void)
{
    wdt_cr__wdt_rpl__setf(WDT_CR_RPL_4PCLK);
    wdt_cr__wdt_en__setf(ENABLE);
    wdt_crr__setf(WDT_CRR_CRR_ENABLE);
}
 
void xc_wdt_stop(void) 
{
    wdt_cr__wdt_en__setf(DISABLE); 
}
 
void xc_wdt_refresh(void)
{
    uint8_t val = wdt_icr_get();
 
    wdt_torr__wdt_top__setf(val);
}
 
void xc_wdt_reload(void)
{
    uint8_t val = wdt_icr_get();
 
    wdt_torr__wdt_top__setf(reload_val);
 
    wdt_crr__setf(WDT_CRR_CRR_ENABLE);
}
 
void WDT_Handler()
{
    DEBUG("WDT_Handler\n");   
 
    xc_wdt_refresh();
}