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Last activity 2018-01-12 15:00:19 +0200 by aircheese

Are TWI manager implemented low power features?

My environment is: SDK14.1 + SD132 V5.0 + NRF52832

2 sensors(MPU9250 + LPS22HB) 1 battery gas meter (LTC2942) are mounted on TWI ( +1mA)

SPI to spi flash. (+1mA) and UART for shell. (+1mA)

I used both manager. After putting all ... (more)

34
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answers
Last activity 2018-01-10 14:42:09 +0200 by Jonathan

SPI interrupt and RTC

I'm using the SPI driver and experiencing a hang in the SPI driver because the SPI interrupt is not raised. The reason is in this code from the driver:

p_cb->bytes_transferred = 0;
nrf_spi_int_disable(p_spi, NRF_SPI_INT_READY_MASK);

nrf_spi_event_clear(p_spi, NRF_SPI_EVENT_READY);

// Start ...
(more)

100
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no
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1
answer
Last activity 2017-12-21 11:03:41 +0200 by Ahmed

spi Miso problem [closed]

Hello,

I am using nRF SDK 12.2.0 , with nRF52832 on pca10040 hardware, and working with the example in examples/peripheral/spi/main.c to develop a driver for LIS2DE12. When I write a hexadecimal value I find a ... (more)

37
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answers
Last activity 2017-12-17 13:23:46 +0200 by abhiarora

SPIM not working in NRF52832?

I am writing drivers for external ADC and I need to write my own SPIM driver using hal of NRF52 SPIM. However, after trying for a day I am not able to see my waveform in my Oscilloscope.

#define SPI_MODULE ...
(more)

36
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no
votes
1
answer
Last activity 2017-12-15 13:46:21 +0200 by Martin Børs-Lind flag of Norway

Force SPI transfer and a PWM signal in sync.

I am trying to control a current measurement chip (DDC114) that works with a protocol that is close (enough) to SPI. It has 2 channels, s.t. it can be read out and integrating at the same time. The switch ... (more)

44
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1
vote
1
answer
Last activity 2017-12-07 12:22:28 +0200 by mantap

How to connect nRF51822 using adxl345 SPI? needed help

Well, I have question for this SPI connection problem. anyway,I have nRF51822 core board using adxl345 with SPI connection. that connect SDA to P5, SDO to P6, SCL to P7, CS to P8. this program works fine till connect ... (more)

68
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1
vote
1
answer
Last activity 2017-12-07 10:03:23 +0100 by Bjørn Kvaale

nrf52 spi dfu

Hi,

We are using a nrf52832 in a serialized application with a STM32F4 and standard SPI as the transport layer. We are using the SDK V12 on the STM32 and softdevice S132 on the nordic.

We would like to add ... (more)

70
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1
vote
1
answer
Last activity 2017-12-06 21:09:11 +0200 by Nathan

SPI reading multiple register then concatenate

Hi,

I'm using the LSM6DS3 IMU using SPI. I am able to read the WHO_AM_I register and retrieve the correct data with this code based on the spi example from the SDKv14.2.0 :

static uint8_t       m_tx_buf[2];           /**< TX ...
(more)

53
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no
votes
1
answer
Last activity 2017-11-29 08:32:03 +0200 by endnode

Can DTM on nRF52840 be controlled by SPI interface?

We currently have a SPI interface between MSP and the Nordic nRF52840. In the DTM documentation it indicates UART is used to command the tests. Is it possible to do this using SPI?j

127
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Last activity 2017-11-13 04:18:39 +0200 by Samuel Zhang

SPI configuration on nRF52832

Hi, Dear Nordic experts:

I encountered with a couple of queer issue while configuring SPI port on nRF52832 with PCA10040 demo board. Here I wrap up as below:

1) First, I tried to enable both TWI0 (master) and SPI0 based ... (more)

49
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1
vote
1
answer
Last activity 2017-11-10 11:39:34 +0200 by RK flag of Singapore

Transmitting 16 bit at once over SPI on nRF51-DK

Forgive me if this is a stupid question, but I am new to programming microcontrollers other than Arduino and SPI in general.

I have a DAC that has a 16-bit register and I need to write to it using SPI ... (more)

108
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no
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1
answer
Last activity 2017-11-04 02:00:35 +0200 by Ed

SPI master driver for nRF52832

Hello,

Question regarding using the SPI master peripheral with DMA to communicate from the nRF52832 to the ads1296 device .

In order to use this device in the mode and sampling rate I need, with the number of channels, I have ... (more)

53
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1
vote
1
answer
Last activity 2017-11-03 08:00:17 +0100 by Bhupinder Singh

nRF52840 SPIS transmit failure

We are using nRF52840 as SPI slave and imx7 as SPI master.

Data sent by imx7(master) is received at nRF52840(slave) correctly, however the data sent by slave is not received at master (MISO) correctly. Two bytes of data ... (more)

75
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no
votes
1
answer
Last activity 2017-10-31 09:05:04 +0200 by Jørgen Holmefjord flag of Norway

SPI Example Symbol cannot be resolved

I'm trying to set up SPI example from SDK12.3, but I get error at line 53 of main.c

static const nrf_drv_spi_t spi = NRF_DRV_SPI_INSTANCE(SPI_INSTANCE);

It's saying

Symbol "NRF_SPI0" could not be resolved

Symbol "SPI0_TWI0_IRQn" could not ... (more)

159
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2
votes
1
answer
Last activity 2017-10-31 06:01:11 +0200 by RK flag of Singapore

[NRF52840] SPI and SPIS example!

I am working with SPI and SPIS examples ( sdk version 13). SPI of nrf52 is full duplex. In the example, I can send data from Master board to Slave board then Master board will receive response data from Slave board ... (more)

142
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no
votes
2
answers
Last activity 2017-10-30 11:03:52 +0200 by Amit

SPI handler callbacks not invoked with NRF_SDH_DISPATCH_MODEL_INTERRUPT

Hi, We are currently migrating our codebase from SDK 13 to SDK 14 for NRF52832 based board. One major difference we see is that SPI transfer completion callbacks are not invoked when transaction is started from within BLE context; based ... (more)

117
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1
vote
1
answer
Last activity 2017-10-27 11:30:59 +0200 by Jørgen Holmefjord flag of Norway

Problems to manage SPI pins to communicate with the slave.

Hi to everyone!

I'm trying to use the nRF52832 board as master to use an external device (as slave) through SPI. I take the example peripheral/SPI to start to learn how to work with this. In the example ... (more)

52
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no
votes
1
answer
Last activity 2017-10-19 10:50:45 +0200 by Sigurd flag of Norway

spi slave race condition

Hi!

After reading few posts about spi slave/master issues... I'm also challenging with one of them. I have following setup nrf51822, s130 2.0.1 and sdk 12.3.0… nrf51 (spi slave) is communicating with arm cortex ... (more)

55
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no
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answers
Last activity 2017-10-15 00:19:52 +0200 by Musa

Random SPI data shifting at ~72kB/s throughput

Hello,

I am using nRF52 with ADS1292, and i am trying to sample at 8kHz with data throughput of 72kB/s, but some data is being randomly shifted giving me random spikes. This occurs on all available clock speeds to ... (more)

105
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no
votes
1
answer
Last activity 2017-10-12 20:07:19 +0200 by Nguyen Hoan Hoang flag of Canada

Issue running TWI/SPI on nRF52832, works with Kiel but not GCC

Hi,

Just curious to know if anyone else had this issue and how they solved it.

My colleagues and I are working on code based on the Nordic Uart Service, in SDK13.1.0 with SD132v4.0.2 on an ... (more)

36
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no
votes
1
answer
Last activity 2017-10-12 08:23:58 +0100 by wszellen

How does writing to SPI1->TXD affect SPIS transaction on nRF51822

I have a strange bug, that I do not have any good answer for.

In the software, I use either SPI1 or SPIS depending on current configuration, I have seen some rare cases where I see unexplained 0 values on ... (more)

160
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answers
Last activity 2017-10-11 12:30:36 +0200 by arjun

SPI External Flash Interface

Hi,

I am trying to interface external flash with the nrf52. I am able to read the device id. After writing to the status - configuration - bank address registers, I am able to read the register values.

But when I am ... (more)

53
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no
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no
answers
Last activity 2017-10-10 15:03:20 +0200 by DaveyJones

How to receive information from pressure sensor over SPI using nRF52832 ?

I am using nRF52 based NINA-112b EVK I saw the spi master example to send the data to slave. Do you have any idea what to do if I want to receive the data from the slave. and how to ... (more)

42
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no
votes
1
answer
Last activity 2017-10-09 09:21:35 +0100 by Jørgen Holmefjord flag of Norway

Error Listing symbols

Hi All,

I am working on BLE+SD card Library, s132. Although i am getting certain errors which i am unable to counter.:-

*** Using Compiler 'V5.06 update 4 (build 422)', folder: 'C:\Keil_v5\ARM\ARMCC\Bin'
Build target 'nrf52832_xxaa ...
(more)

219
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1
vote
1
answer
Last activity 2017-10-04 10:38:43 +0200 by David Edwin

How (if able) to add ethernet to nRF52832?

I got my developer kit and have been playing around with BLE. But I got my mind set on a solution with several nodes as sensors, and one "base" node connected with an API making http calls over ethernet.

I ... (more)

48
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no
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no
answers
Last activity 2017-10-01 04:49:08 +0200 by phob

NRF51822 sometimes not working

Hi, I am using NRF51822 and sdk12.2. I am using Softdevice s130 with peripheral experiment_ble_blinky example. I have merge UART example in this and it is working fine.

Yesterday i flashed and it was working perfectly. Even i connected ... (more)

108
views
1
vote
1
answer
Last activity 2017-09-21 13:49:13 +0200 by DerPMO

nRF52 SPI loops when waiting for NRF_SPI_EVENT_READY after initialisation [closed]

So I switched from Bluemod+S (nRF51822) to Bluemod+S42 (nRF52832) on my custom board and am trying to adapt my existing code to work on the newer model. Apart from various obvious and some not so obvious changes I ... (more)

71
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no
votes
1
answer
Last activity 2017-09-15 16:15:13 +0200 by Bill Finger

nRF52832 SPIS PAN 109 Workaround Issue

I've been using the nRF52832 chip for over a year and it works great. However, for a new project I designed a board so that the nRF52 chip was the slave on a SPI bus, and I immediately ran ... (more)

67
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no
votes
1
answer
Last activity 2017-09-15 09:29:44 +0200 by Martin Børs-Lind flag of Norway

Why isn't my PPI/SPI channel triggered with GPIOTE?

Hello,

I would like to detect a change in a pin(GPIO_IN_NUMBER) and depending on it I would like to trigger a SPI transaction, this should happen through PPI.

So far I have configured my PPI in this way, is ... (more)

90
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no
votes
1
answer
Last activity 2017-09-11 16:03:24 +0200 by Prasad

Are SPI interrupt disabled in GPIOTE handler?

I am writing code for nrf51822 with softdevice and an accelerometer is connected to the nrf chip. The accelerometer provides interrupt to nrf chip over GPIOTE whenever there is data available to read. Upon receiving the GPIOTE interrupt, I am ... (more)

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