Dear NXP,
I am using S32K118 with RTM 3.0.0 SDK and try to implement RUN <-> VLPS power mode switch.
Behavior is done within a RTOS task, snippet of code as follow:
#define RUN (0U)
#define VLPS (1U)
#define VLPR (2U)
void CustomizedTask(void *pvParameters)
{
(void)pvParameters;
uint32_t get_addr = 0;
for (;;) {
if (condition_match_1) {
POWER_SYS_SetMode(RUN, POWER_MANAGER_POLICY_AGREEMENT);
} else if (condition_match_2) {
POWER_SYS_SetMode(VLPS, POWER_MANAGER_POLICY_AGREEMENT);
} else if (condition_match_3) {
POWER_SYS_SetMode(VLPR, POWER_MANAGER_POLICY_AGREEMENT);
} else {
/* Do nothing */
}
vTaskDelay(2000);
get_addr = *((uint32_t*)0x4007E014);
if (get_addr == 1) {
/* Show value */
} else if (get_addr == 4) {
/* Show value */
} else if (get_addr == 16) {
/* Show value */
} else {
/* Show log */
}
}
vTaskDelete(NULL);
}
In order to verify whether the power mode has been switched, I access the memory address 0x4007E014, which is supposed to store the value of SMC->PMSTAT
However, I discovered only when I switched between RUN <-> VLPR, the value changed. RUN mode returned value 1, VLPR returned value 4, as described in `SMC_GetPowerModeStatus()` in power_smc_hw_access.h.
When I tried to switch to VLPS, the value always remained 1. This makes me wonder maybe the mode didn't change as expected, yet the function `POWER_SYS_SetMode()` returned "STATUS_SUCCESS".
Is the way I verify is wrong? Or there is something interfering during the transition?
Another question is, why function `POWER_SYS_GetCurrentMode()` only handles cases such as "STAT_RUN" and "STAT_VLPR", whilst other cases are regarded as "default"?
Best regards,
APU
Dear NXP,
I realized my mistake.
SMC->PMSTAT cannot reveal VLPS status when debug is enabled.
Dear NXP,
I realized my mistake.
SMC->PMSTAT cannot reveal VLPS status when debug is enabled.
