My sensor is off-standard,so I have to use gpio to read and write my sensor.
Gpio IIC will take about 0.5ms to get data.
My app need send data every 7.5ms,it seems that...
Hi,
My android Proximity application fails on service discovery only for the very first time it connects with the devices(nrf51822 evaluation kit with sdk 5.2.0). Actually...
Has anyone converted the app note AN34 DTM Python script to C# or C/C++ ?
The Python DTM script is works OK with the setup specified in the app note AN34 figure 2, which...
Hi,
I have a serious problem, when I use uart of NRF51822 QFAAC0 to receive data from another MCU, I found that it will lost one bit at same position everytime. my SDK is...
Hi,
I just started to interface the lcd display with nrf51822 evaluation board. The display i'm using is, spi compatible, 18" tft (160x130) from tiny lcd. I took spi master...
Hi,
We are using the nRF905 device in an application where it needs to switch between auto-retransmitting and sending single packets, due to it communicating with several...
Hello,
Some problems I meet when I try to use spi manager in ble_template example to read "who_am_i" register of LIS2DH12. The environment is set as below:
nRF52832...
Hi,
I'm using SDK13.0.0 and softdevice S132 v.4.0.2.
I sometimes get NRF_ERROR_INVALID_STATE from sd_xxx() in the function registered to ble_evt_dispatch() when connection...
Hello,
I would like to establish communication between my pca10040 and my cellular modem.
Currently I am using ble_app_uart on the peripheral example and I can put messages...
There is the board mark on the chip like n51822CEAAD01350A0, where DO is Build code, 1350 is tracking code(YYMM), A0 is lot code.
My question is how can I get those codes...
I have a thread using a Timer and PPI to trigger SAADC sampling at 100hz. Currently I have an app_timer also running at 100hz to sample the results of the SAADC (and its time...
Hi guys,
I notice that the bytes array of UUID is reversed after registerd.
For example, I define the UUID marco as follows and registe it at ble_nus_init().
#define...
I am trying to use ESB and BLE concurrently on NRF51822 SDK v11 SD130..
The BLE part is working fine but the ESB part keep causing error randomly.
I put a break-point in...
when i use C:\Users\Administrator\Desktop\nRF5_sdk14.0.0_ble_central_beacon\examples\ble_central\ble_app_multilink_central for this instance ,I debug the discover moudle callback...
The question I mentioned here
When using ble_gatts_hvx to send data, only send data pointer and length to softdevice, and softdevice did not copy these data to the softdevice...
i used pca10040_debug of bootloader_secure of nRF5_SDK_14.1.0_1dda907.
i created the key by myself.
Bootloader and zip file used the same key.
My device is in DfuTarg...
I'm using an NRF51 w/ S130 operated directly from a coin cell battery. I use the ADC with a voltage divider to successfully measure analog voltages. One of the challenges...
I'm trying to debug a randomly occuring Hardfault. In trying to trace down the source I read the CPU registers use the Nordic hardfault_implementation.c which grabs the register...
NRF52832 reference design BOM did not specify the voltage rating of capacitors. What is the recommended voltage rating of capacitors?
For 32 MHz Crystal Oscillator, specified...
I'm trying to use the TWI talking to a I2C device (LED driver TLC59116). I have some working arduino code which I have converted to use on my nRF52 custom board. I'm using...
Hello,
I'm trying to measure battery voltage on nRF52832 chip using SAADC based on examples/peripheral/saadc and examples/ble_peripheral/ble_app_proximity and noticed that...
