I am writing code that runs on a NRF51822 (to be less specific it runs on a Red Bear Lab BLE Nano). The board has a 32.768khz crystal on it that I want to use to wake up the chip after a certain amount of time. How do I go about bringing the board out…

Hello, I'm using NRF51-DK (PCA10028) and I want to be sure if I'm using the external 32KHz oscillator (X2). I'm using SDK12.3.0. I'm running the beacon example. In example, I'm looking at decleration nrf_clock_lf_cfg_t clock_lf_cfg = NRF_CLOCK_LFCLKSRC;…

Testing on nrf52DK (QFAAB0), without softdevice, unfortunately still on SDK10 and NRF52 sleeping on RTC. Programming pins disconnected. Measured: low frequency clock source being external crystal with 3.05uA , running on RC oscillator it…

I need an accurate timer to generate pulses about 20ms. With simple timer this is workiong fine, but I need more then one timer simultaneously. So I would like to use app_timer. I do not need a SD. And I do not need external crystal(only the internal…

Hi, Everyone, I am Using S130 and sdk 11.0.0.2-alpha with nRF51422 chip. I have two crystal in my custom pcb, one is 32 Khz crystal for LFCLK between XL1 and XL2 (pin 45,46 ) and other is 16Mhz HFCLK between XC1 and XC2(pin 37, 38) Inside ble_stack_init…

I've been developing some ble code for a custom board. Recently, I just finished creating a new smaller board. When I load my code onto it, I notice that I have trouble discovering my device's services and fail to connect most of the time. After looking…

Hello, I am trying to upload my custom firmware to the MetaWear RG (nrf51822) platform but currently without luck. Steps that I have performed: Connected to the device using the debug out of the nRF51DK as described here Uploaded Softdevice S130…