Other Parts Discussed in Thread: HALCOGEN,
Hi All,
I need to use the clock monitoring during running MCU.
But the function 'void checkClockMonitor(void)' in sys_selftest.c is not working.
It doesn't pass 'Wait till oscillator fail flag is set'
There are similar questions in the TI Forum, but they seem to have not been solved.
(https://e2e.ti.com/support/microcontrollers/arm-based-microcontrollers-group/arm-based-microcontrollers/f/arm-based-microcontrollers-forum/845782/ccs-tms570ls3137-checkclockmonitor-in-sys_selftest-c-from-halcogen---code-freezes-waiting-for-oscillator-to-fail)
(e2e.ti.com/.../oscillator-fault-flag-always-set)
/** @fn void checkClockMonitor(void)
* @brief Check clock monitor failure detection logic.
*
* This function checks clock monitor failure detection logic.
*/
/* SourceId : SELFTEST_SourceId_035 */
/* DesignId : SELFTEST_DesignId_028 */
/* Requirements : HL_SR394 */
void checkClockMonitor(void)
{
uint32 ghvsrc_bk;
/* Enable clock monitor range detection circuitry */
systemREG1->CLKTEST |= 0x03000000U;
/* Backup register GHVSRC */
ghvsrc_bk = systemREG1->GHVSRC;
/* Switch all clock domains to HF LPO */
systemREG1->GHVSRC = 0x05050005U;
/* Disable oscillator to cause a oscillator fail */
systemREG1->CSDISSET = 0x1U;
/* Wait till oscillator fail flag is set */
/*SAFETYMCUSW 28 D MR:NA <APPROVED> "Hardware status bit read check" */
while((systemREG1->GBLSTAT & 0x1U) == 0U)
{
} /* Wait */
if((esmREG->SR1[0U] & 0x800U) != 0x800U)
{
selftestFailNotification(CHECKCLOCKMONITOR_FAIL1);
}
else
{
/* Clear ESM flag */
esmREG->SR1[0U] = 0x800U;
/* Disable clock monitor range detection circuitry */
systemREG1->CLKTEST &= ~(0x03000000U);
/* Enable oscillator */
systemREG1->CSDISCLR = 0x1U;
/* Wait until oscillator is enabled */
/*SAFETYMCUSW 28 D MR:NA <APPROVED> "Hardware status bit read check" */
while((systemREG1->CSVSTAT & 0x3U) == 0U)
{
} /* Wait */
/* Clear oscillator fail flag and PLL slip flag if any*/
systemREG1->GBLSTAT = 0x301U;
/* Switch back all clock domains */
systemREG1->GHVSRC = ghvsrc_bk;
}
}
