First time here? Check out the Tour!
I try to control IC by nRF52832.
・Supply 2.5V to nRF52832 and IC.
・Connect P0.10 to IRQ(IC)
[I did these setting]
・P0.10 : INPUT, PULL DOWN
But, the IC's IRQ ... (more)
Like it says in the title. I'm working on an embedded application where lifetime is pretty important, so I'm trying to get power consumption down as low as possible. I don't want current leaking through my GPIO ... (more)
There seems to be an issue when reading GPIO pins returning false readings. I am using two pins for I2C communication, 26 and 27, I am configuring them with the required configuration for using I2C and then setting them high ... (more)
Is it really possible to timestamp 4 GPIO edges in parallel with the nRF52?
It would need to be as fast as possible and some edges might be simultaneous so PPI seems to be the trick.
The documentations ... (more)
First of all, I would like to apologize if a similar question was already asked but all this BLE matter is so broad that it defeats me. I am planning to put two NRF51822 devices into my project. I ... (more)
Specifically, sinking a Cree C503B green LED (Vf 3.2V at 20ma) from a GPIO configured for high drive, without a current limiting resistor, from VDD 3.6V?
Figure 23 “GPIO drive strength vs Voltage, high drive VDD=3.0V ... (more)
I have a custom PCB board with a nRF52832 and a motion sensor. I cannot use a signal analyzer on the output from the sensor because of the shape and small size of PCB and its components and tools ... (more)
Hi all: All of the example code is using GPIOTE to demonstrate how to handle GPIO interrupt. However, it just can configured HiTOLow/LowToHi/Toggle. If I want to trigger the interrupt by sense Low/High, how can I implement ... (more)
Can anyone tell me whether it's possible, within the SDK (or otherwise!) to create a grouping of GPIO pins? Essentially, a design change means that we want to combine what were two distinct I2C busses (and so, 2xSDA and ... (more)
I have a charger IC for a lithium ion battery on a custom board with an nRF52832. It's this one, from ST Micro, an STBC08:
The charger IC has two ... (more)
Hello, I am toggling two separate pins at different rates but it looks like for whatever reason the when I go to clear one gpio register it clears everything. I understand that writing a 0 to the outclr and dirset ... (more)
I have the blinky examples working, but have not been able to get any example code using any gpio input to work. they compile fine but the buttons done seem to work. I'm using GCC compiler in Segger Embedded ... (more)
I am using the template example for S130(works fine). I tried adding a simple Pin interrupt on the code but it didn't call the pin interrupt handler everytime I press the button. I believe I'm using some ... (more)
I just tried the Button example on the
nrf52-dk development board, and the interrupt for the defined button GPIO does not seem to *trigger
Zephyr 1.8.0 (
and the example under
samples/basic/button ... (more)
I am working on a project. The goal is to retrieve every seconds some acceleration data from the ADXL362 accelerometer.
I configured the spi in blocking mode by passing NULL as event handler nrf_drv_spi_init(_spi, &_spi_config, NULL);
This method ... (more)
Hi, I'm contemplating ways to drive a small RGB LED matrix with the nrf52832 in a really space-tight project. Ideally without any external components. I'ts maybe around 40 RGBs (5x8 grid, 120 individual LEDs to drive).
Charlieplexing would ... (more)
I am using nrf51822 DK. How to set GPIO pins as output pins and access the pins to set or reset the output.For example if I want to use pin 20 as output, how to configure that.I need ... (more)
i have nrf52 and sdk13.1.
Is this possible. I get
When performing flash operations, i.e. via FDS or FSTORAGE, etc. - will GPIOTE events be captured and 'queued' until the CPU is no longer halted?
Said another way:
Can I assume that a GPIO transition that occurs while CPU is ... (more)
I am developing a ble applications and am unable to get pins 9 or 10 to work as gpio. I understand that this is because, by default they are used by the NFC.
I have tried the following ... (more)
I am trying to configure the NFC Pins for usage in an SPI application. However they do not even work for a simple nrf_gpio_pin_set after configuring them with nrf_gpio_cfg_output . Every other Pin seems to work, though.
After some ... (more)
Hello! Can I use one of the gpio pin as power source directly for other MC on my board (hx711 - ADC with current consumption in normal mode 1.5ma (from datasheet)). I understand I have to do it via transistor ... (more)
I am trying to use NRF51822 GPIO to generate a pulse with max width of 0.3us. According to other tickets in the forum and the product spec, NRF51822 should be able to generate a 50% duty PWM with 8MHz ... (more)
This is for the nRF51822.
I have done some tests where I configure a pin as input with pull up enabled and then reconfigure the pin for an adc measurement with 1/3 prescaler with band gap reference.
It looks ... (more)
Hello, I just wanted to update previous similar questions for the nRF52 series, old one for nRF51 is here: https://devzone.nordicsemi.com/questi...
At page 151, section 20.4, of the nRF52832 Product Specification v1.0 I find that ... (more)
Hi. I have a board here based on the nRF52832, using SD 132 and SDK 13.0.0, with a modem on it that I'd like to keep powered on even when the Nordic is in system off mode ... (more)
What is the minimum required length of a LOW pulse to be detected by the nRF52832 via GPIO SENSE mechanism? I couldn't find it in the product specification.
I want to wakeup the nRF with a LOW ... (more)
Hi, I am really new to the Nordic products and programming for that matters. But, the thing is that I am in somewhat of a hurry. I would like to use a similar code to below to the one below ... (more)
I have a board with some LEDs that are driven in the same way as with the nRF51 DK board (i.e. there is a resistor in series with the LED and you drive the pin low to turn the ... (more)
I have noticed strange problem with one of GPIOs - P0.15. We have tested 50 devices based on nRF52832 and 3 of them have problem with P0.15 after few days.
P0.15 pin we have connected with two ... (more)