How to power off and power on the ble and usb module in ncs sdk?

RE: How to power off and power on the ble and usb module in ncs sdk?

pipixia_1_1 — Tue, 07 Jan 2025 14:40:31 GMT

if i call force_power_down(), if i call press the key，the system will work up

RE: How to power off and power on the ble and usb module in ncs sdk?

Kenneth — Mon, 06 Jan 2025 14:53:42 GMT

Hello,

Can you try to elaborate a bit what you want to achieve here? Because there are already mechanism that will disable USB when there is no VBUS, and the BLE stack will not draw any current if it's not advertising or in a connection. If you just want to abrupt power off you should be able to call force_power_down();

Kenneth

RE: How to power off and power on the ble and usb module in ncs sdk?

pipixia_1_1 — Sat, 28 Dec 2024 15:39:59 GMT

my product is developed from this application,but there is no method to swicth on off the usb and ble when runing.

RE: How to power off and power on the ble and usb module in ncs sdk?

Naeem Maroof — Sat, 28 Dec 2024 00:27:29 GMT

We have the nRF Desktop application (under NCS applications) that is a reference design of HID devices that connect to a host through BLE, USB or both. Depending on the configuration, this application can work as a desktop mouse, gaming mouse, keyboard, or connection dongle. Maybe you can have a look at this application. NRF_DESKTOP

RE: How to power off and power on the ble and usb module in ncs sdk?

pipixia_1_1 — Thu, 26 Dec 2024 08:15:28 GMT

hello ,tere is some method to slove this problem?

RE: How to power off and power on the ble and usb module in ncs sdk?

pipixia_1_1 — Tue, 24 Dec 2024 01:39:16 GMT

i know,the CAF Power manager can automatically manage USB power states based on USB events.what i need is disable the usb and ble funcation by fn key and will not influence other funcation like key scan .

RE: How to power off and power on the ble and usb module in ncs sdk?

Naeem Maroof — Mon, 23 Dec 2024 19:45:04 GMT

Hi,

The USB state power manager module works in conjunction with the CAF Power manager to handle USB power states. Enable the USB state power manager module by selecting the CONFIG_DESKTOP_USB_PM_ENABLE option. The module will automatically manage USB power states based on USB events:
When USB is connected and active, it restricts the power level to POWER_MANAGER_LEVEL_ALIVE.
When USB is suspended, it restricts to POWER_MANAGER_LEVEL_SUSPENDED and generates a force_power_down_event.

Also, the Bluetooth state power manager module works with the CAF Power manager to handle BLE power states. Enable the Bluetooth state power manager module by selecting the CONFIG_CAF_BLE_STATE_PM option. This module will limit the power level to POWER_MANAGER_LEVEL_SUSPENDED when there's at least one active BLE connection, and remove power level limitations when there are no active connections.