Designing a low-power IoT gadget using nRF51822

[ImanH]

I would like to design a BLE-controlled electronic device. My requirements are:

1- Very low power consumption. (Less than 200uA in IDLE mode)

2- Slow periodic BLE advertising, so a user with smartphone could find and connect to my device.

3- My device has a microcontroller which is normally in STOP mode. The BLE should advertise and after making connection should generate an interrupt to wake my MCU up. The BLE itself should consume as low as possible current.

Can I  use nRF51822 to accomplish the above-mentioned requirements?

Thanks in advance.

[Einar Thorsrud]

Hi,

You will have no problem making this with the nRF51822, with a significantly lower idle current consumption. What you describe is a simple BLE peripheral device, so you can refer to one of the simpler BLE peripheral examples in SDK 12.3 (the latest with nRF51 support), for instance the Template Application. I assume you will generate the interrupt for the CPU by toggling a GPIO twice, which you can do in the handling of the BLE_GAP_EVT_CONNECTED event.

[ImanH]

Thanks!

I would actually like to replace Cypress PSoC 4 with nRF51822.