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I am developing firmwares for the nRF51422 under Eclipse with the ARM GCC toolchain.
I have a matrix of WS2812 (or neopixel) RGB LEDs that I am controlling using the code available here.
However, I would like to ... (more)
I need a cheap 2 or 3 button fob or itag to connect to/control my NRF51 firmware. So far I only could find "AB Shutter 3" as input device with >1 button but it is using Bluetooth V3. I ... (more)
I am building a Bluetooth Mesh application based on the Mesh Beacon Example, i have written a custom Makefile and got it compiling with no errors.
But when Flashing the nRF51422 with the program, nothing happens. If I build the ... (more)
I installed Nordic examples for Keil MDK, and I am able to compile the examples for the PCA10028 board, which is based on the nRF51422. But I intend to take the same code, and run it on a ... (more)
Hi all, I have here NRF51-DK, I am a bit familiar with the kit for a while. Now I want to make a system using NRF518422 chip. I manage to find a module - "Taiyo Yuden EYAGJNZXX".
My question is, Is ... (more)
I would like to separate the BLE communication from the main.c and place it to a separate file. I followed the example of the default ble_app_template as well as nordic's services tutorial to create the BLE. It is ... (more)
Hello we have a projekt with periperal "ble-app-blinky" und central "ble_app_blinky_c".
how to do:
when the "peripheral" battery is below 2.3V then the led 4 on "central" must going on?
(In the moment we do it with a external ... (more)
I am developing a product where I need to read a signal from an SPI ADC and send remotely to a receiver. This will be powered of a coin cell. I see that the NRF51422 is low power, but I ... (more)
Hi, I am use nRF51422 and SDK 12.3 sd130. I can use nRFTool App update FW to nRF51422. but I dont know how to switch App to bootloader in BLE not button. which function I can use and reset ... (more)
I'm currently migrating from a functional code IAR to Eclipse GCC.
It compiles fine and I got the hex files.
However I have some troube to flash the application in the module. Indeed, when I'm using ... (more)
When programming the bluetooth mesh light control demo example found in the bluetooth mesh SDK, i get this error using J-Link RTT Viewer:
0> <t: 0>, main.c, 116, ----- BLE Mesh Light Control Server Demo ----- 0> <t: 1391>, main.c ...
I have just updated the SEGGER Jlink tools to the latest version v6.18b.
Under Keil debbuging the J-Link RTT Viewer (or client) shows the initialization commands in an infinite loop (one after the other starting from the first ... (more)
Is there any way to disable the "Enhanced Power Control" feature of the BLE standard? I am working with nRF51-DK in the connection mode and I need fixed transmit power regardless of the distance between my Bluetooth devices. If ... (more)
I have an nRF51 DK, found here https://www.nordicsemi.com/eng/Produc.... I am using SDK V11.0 and S130 V2.0. I am developing on a Linux machine.
I can compile and run the blinky example successfully ... (more)
Post in reference to link
After flashing light control server or client app on PCA10028 app crashes with HARD FAULT.
Steps how I built the app:
Using freshly downloaded MESH SDK 0.9.1.
ble_mesh_v0.9.1-Alpha>mkdir build ble_mesh_v0 ...
i doing the pcb tiring to find the package size .
also if there is any application note to the pcb Antena
Some time ago we started a project in which we decided to use ANT protocol to communicate wirelessly. However, now that we are going to production in a very very short time, we have spotted a very critical ... (more)
I want to falsh nrf51422 device. I ma developing software using Eclipse and SDK_7.2.0. The soft device is 130. I have build the project successfully and Hex/elf file is generated.
But when i tried to flash ... (more)
ppi.zipHi, I am using radio with ppi to advertize packets as shown in the mainc file attached. Even after allocating the access address of Bluetooth on line 196 as set_address0(0x8E89BED6); and advertizing channel selected as 37 as ... (more)
Hi, I have some code written for Arduino that read values in SPI from a LSM9DS1 (9-axis IMU) and I need to make it work on a nRF51.
What I have troubles with is the library to use with the ... (more)
I'm having some trouble using the UART protocol (4800 8N1) communicating with a GPS device.
It happen that the nRF51 device is not getting an interrupt (nothing at all, even not an error) when a NMEA character have ... (more)
Hello, I got problem in enabling whitelist on starting advertising.
My working enviroment is PCA10028 V1.1.0 2015'18, SoftDevice S130 2.0.1, SDK 12.2.0 MCP works on Android 6.0.1, Nexus 7(2013).
I ... (more)
I am new to firmware engineering. I have a simple and basic question.
If there's Timer A and B, and both interval is 100ms, what happens to the timeout handler functions? If both timers start at the same ... (more)
I am using jlink to program the custom board. I was able to program the board earlier, but now this error is comming. I have rechecked the connection and it is fine. The custom board is powered by the 12V ... (more)
I have a dual mode BLE / ANT+ nRF51422 design going through regulatory testing for FCC / EU marketing approval. I have previously successfully tested a very similar design with Ant+.
One of the tests that I am required to do is ... (more)
tl;dr: UART transmission sometimes stops and never resumes. Only a power cycle resolves the issue; a system reset is not sufficient. The problem only occurs when flow control is used.
Hardware: nRF51dk 51422, PCA10025, V1.2.0, 2015.51 ... (more)
I want to run the HID Mouse and Keyboard examples on nRF51 Dongle. How I can configure it first, to connect with my PC via Bluetooth and second, to configure the GPIOs act like buttons, since the dongle doesn't ... (more)
I am using nrf51422, SDK 12.0.0, an SPI OLED display 128x32, and an SD card.
I want to interface an OLED display and an SD card onto the nrf51422. Although my SD card and the OLED ... (more)
I am a beginner,Can you please explain me what is the role of this line?
APP_ERROR_CHECK(nrf_drv_spi_transfer(&spi, m_tx_buf, m_length, m_rx_buf, m_length));
I have built a board using nRF51422, and I've just manage to populate it and start it up. I'm using a modified example (peripheral_lbs), and everything seems to work ok (leds and buttons), but the radio ... (more)