/* Selects the ratio between the number of counter overflows to the number of ETMes the TOF bit is set. 
@无返回  */
void ETM_SetTOFFrequency(ETM_Type *pETM, uint8_t u8TOFNUM)
/* Selects the ratio between the number of counter overflows to the number of ETMes the TOF bit is set. 
@无返回  */
void ETM_SetTOFFrequency(ETM_Type *pETM, uint8_t u8TOFNUM)
{
    ASSERT((ETM2 == pETM));
    pETM->CONF &= ~ETM_CONF_NUMTOF_MASK;
    pETM->CONF |= ETM_CONF_NUMTOF(u8TOFNUM);
}