Overconsumption when there is no softdevice but with FreeRTOS

[Aurele]

Hello,

i'm working on a NRF52810 on which i have ported FreeRTOS because i'm sharing library with another NRF52832 that embeds FreeRTOS too.

I'm issueing an overconsomption on this NRF52810 since i removed the softdevice and i don't know why. I'm testing on an evaluation board so that we can be totally decorrelated from our hardware. 

If i call WFE/WFI before initializing clock like the following : 

int main(void)
{
    // Initialize low level driver
    timer_init();
    log_init();
    while(1)
    {
        // Wait for an event.
        __WFE();
        // Clear the internal event register.
        __SEV();
        __WFE();
    }

    clock_init();

I have 4.5uA of consumption

But if do it after the clock_init :

    // Initialize low level driver
    timer_init();
    log_init();
    clock_init();
    while(1)
    {
        // Wait for an event.
        __WFE();
        // Clear the internal event register.
        __SEV();
        __WFE();
    }

I have around 470uA. Is that normal ?

WFE/WFI is supposed to be called by nrf_pwr_mgmt_run in my iddle task. What i guess is that it seems nrf_pwr_mgmt_run is not stopping all clock. Am i right ?

Best regards,

Aurélien

[Aurele]

actually, it was coming from GPIOTE : 

    nrf_drv_gpiote_in_config_t config = GPIOTE_CONFIG_IN_SENSE_HITOLO(true);
    config.pull = NRF_GPIO_PIN_PULLUP;
    nrf_drv_gpiote_in_init(IQS263_INT_PIN, &config, interrupt_iqs263_handler);

if i switch with "GPIOTE_CONFIG_IN_SENSE_HITOLO(false);" there is no longer over consumption on my 810 but i don't understand why, since this code is runing on both NRF52832 and NRF52810 and don't have the same behavior ... Indeed, on 832 i don't have this overconsumption ... 

[Susheel Nuguru]

Thsi very much sounds like this errata on nRF52832, but i do not see this mentioned in 52810.

Can you please check to see if you are using TWIM/SPIM with EasyDMA and if yes, can you see if the workaround mentioned in the link works?

[Susheel Nuguru]

Aurele said:

Indeed, on 832 i don't have this overconsumption ... 

This is confusing. Can you please give me your project so that i can do a quick test on my desk.

[Aurele]

I first thought about this one but it does't seem it is.

[Aurele]

Yes, it is possible, can i give you guest access in private to our git ? I think it will be the simplest way ? We are uising Segger Embedded Studio with SDK16