Setting up Deep Sleep and Wake Up interrupt

RE: Setting up Deep Sleep and Wake Up interrupt

Vidar Berg — Mon, 26 Jun 2023 10:07:44 GMT

[quote user="jptalledo"]Running the System Off Demo provides 250 uA[/quote]

The OFF current should be closer to 0.6 uA. Is there any external circuitry such as the IMU that may account for this extra current?

[quote user="jptalledo"]It does. Wondering if I need to remove/disable any RTT stuff?[/quote]

It should not be necessary to disable RTT logging. The important thing to prepare before entering System OFF is the GPIO configurations, as the GPIO states are retained in System OFF. We've already confirmed that the wake-up pin is configured correctly, but are there other pins that have are not configured to the reset state (i.e., input, disconnect)?

The PS also states that there shouldn't be any ongoing DMA transactions when entering System OFF. However, I haven't seen any cases where this has actually caused any problems.

Does your board support logging over UART? That would allow you to get debug messages without being in debug mode.

RE: Setting up Deep Sleep and Wake Up interrupt

jptalledo — Mon, 26 Jun 2023 09:40:13 GMT

It does. Wondering if I need to remove/disable any RTT stuff?

RE: Setting up Deep Sleep and Wake Up interrupt

jptalledo — Mon, 26 Jun 2023 09:23:19 GMT

Running the System Off Demo provides 250 uA. I was expecting something lower but definitely stays there. It seems when the BLE is loaded, somehow it does not go to sleep.

RE: Setting up Deep Sleep and Wake Up interrupt

Vidar Berg — Mon, 26 Jun 2023 09:17:40 GMT

Yes, SES should exit debug mode after it has loaded the *.hex file.

[quote user="jptalledo"]Any suggestions how to debug this?[/quote]

Maybe you have done it already, but the first step may be to verify that your program actually reaches the pm_power_state_force() line.

RE: Setting up Deep Sleep and Wake Up interrupt

jptalledo — Mon, 26 Jun 2023 09:09:48 GMT

I am using Segger Studio and Downloading the elf file. That should be correct right? I will try the System Off demo next.

RE: Setting up Deep Sleep and Wake Up interrupt

Vidar Berg — Mon, 26 Jun 2023 08:58:46 GMT

Please try to do a power on reset, or use "nrfjprog --reset". This is to ensure the device goes out of Debug Interface mode.

It would also be good if you could try the nRF5x System Off demo on your board to see if you get the expected current draw then.

RE: Setting up Deep Sleep and Wake Up interrupt

jptalledo — Mon, 26 Jun 2023 08:55:14 GMT

Here is the main.c file that I am using

.devzone.nordicsemi.com/.../217737.main.c

RE: Setting up Deep Sleep and Wake Up interrupt

jptalledo — Mon, 26 Jun 2023 08:52:30 GMT

I tried pressing the reset button. There is a small time window when current goes low but not enough to consider deep sleep

RE: Setting up Deep Sleep and Wake Up interrupt

Vidar Berg — Mon, 26 Jun 2023 08:38:36 GMT

Does the power consumption remain high if you power cycle the board too?

RE: Setting up Deep Sleep and Wake Up interrupt

jptalledo — Mon, 26 Jun 2023 08:37:08 GMT

I removed the debugger from my board so wondering what else it could be impacting on the system current consumption and not going into power save mode. Any suggestions how to debug this?

RE: Setting up Deep Sleep and Wake Up interrupt

Vidar Berg — Mon, 26 Jun 2023 08:27:16 GMT

Hi,

Yes, the pin appears to be configured correctly, but judging from the power consumption, it seems that the device is not entering System OFF mode. Did you disconnect the debugger before taking the measurement? If not, it will enter Emulated System OFF mode and keep the CPU active.

RE: Setting up Deep Sleep and Wake Up interrupt

jptalledo — Sat, 24 Jun 2023 10:52:53 GMT

I was expecting current consumption be very low but it is not the case. Not sure how to optimize for ultra low power consumption when I am putting the MCU to sleep.

RE: Setting up Deep Sleep and Wake Up interrupt

jptalledo — Sat, 24 Jun 2023 10:49:50 GMT

It seems that P0.13 is configured properly

RE: Setting up Deep Sleep and Wake Up interrupt

jptalledo — Fri, 23 Jun 2023 13:58:48 GMT

I am using the LISD2H IMU Driver which it is supported and have similar registers to the LISD3H. I will try to answer your question regarding Pin 13.

RE: Setting up Deep Sleep and Wake Up interrupt

Vidar Berg — Fri, 23 Jun 2023 13:55:33 GMT

Hi,

I couldn't spot any errors in the code you posted. Could you please check the PIN_CNF[n] configuration register for P0.13 right before pm_power_state_force() is called to confirm it is configured correctly?

You can use the 'Peripherals' view in VS code for this:

[quote user="jptalledo"]I am configuring Button1 as Input/Interrupt but also it is being used by the LISD3H IMU Driver. Wondering if there is a conflict?[/quote]

I didn't find any references to this driver in the SDK tree. Is it a custom driver you made, or is there anywhere I can find the source code?

Best regards,

Vidar

RE: Setting up Deep Sleep and Wake Up interrupt

jptalledo — Thu, 22 Jun 2023 11:23:18 GMT

I am configuring Button1 as Input/Interrupt but also it is being used by the LISD3H IMU Driver. Wondering if there is a conflict?