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Last activity 2017-02-22 17:37:18 +0200 by amir flag of Iran, Islamic Republic of

NRF24L01+ can not REcieved NRF51822 ACK in ESB!!!?

i have a setup with one NRF24L01+ as PTX and one NRF51822 as PRX

my problem is that the data sended ok and ack sended to NRF24L01+(i assume that by NRF_ESB_EVENT_TX_SUCCESS) but NRF24L01+ does not recieve it and MAX_RT ... (more)

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Last activity 2017-02-17 12:29:05 +0100 by Hung Bui

51822 esb datarate 250kpbs cann't work!!

(void)nrf_esb_init(NRF_ESB_MODE_PRX);
        //nrf_esb_set_output_power(NRF_ESB_OUTPUT_POWER_0_DBM);
        nrf_esb_set_channel(18);//2400+18
nrf_esb_set_crc_length(NRF_ESB_CRC_LENGTH_2_BYTE);
nrf_esb_set_base_address_length(NRF_ESB_BASE_ADDRESS_LENGTH_4B);
        nrf_esb_set_address_prefix_byte(0,0x55);
        nrf_esb_set_base_address_0(0x3412BBAA);
        nrf_esb_set_datarate(NRF_ESB_DATARATE_250_KBPS);
(void)nrf_esb_enable();

when i set datarate NRF_ESB_DATARATE_1_MBPS or NRF_ESB_DATARATE_2_MBPS it was work,but when i set datarate NRF_ESB_DATARATE_250_KBPS it wasn ... (more)

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Last activity 2017-02-14 15:37:23 +0200 by Hung Bui

nrf51822 and nrf24l01+ (esb)

Hi

i wanna create a connection between nrf24l01+ and nrf51822 with esb

in nrf51822 side i'm using sdk12.02 example and i need help for nrf24l01+ side

recommend me library or a method to setup

tnx

805
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Last activity 2017-02-03 19:27:35 +0200 by jrowe

Re-enable softdevice

Hi. I'm trying to enable and disable softdevice repeatedely. In my code, softdevice is firstly enabled then advertising properly. After some seconds, softdevice is disabled and ESB is enabled. It is worked properly too. and then esb is deisabled ... (more)

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1
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Last activity 2016-11-09 15:47:06 +0200 by sajin

Error: L6218E: Undefined symbol uesb_flush_tx (referred from main.o) when compiling the uesb on Keil

I have two nrf51822AC mcu chips that are integrated on custom boards, and I need to communicate between those two chips (one set as a transmitter and the other as the receiver). I wanted to use simple shock-burst protocol but ... (more)

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Last activity 2016-10-15 16:57:34 +0100 by Torbjørn Øvrebekk

Can esb set a special ack payload ?

I am using esb dpl in nrf5 sdk v11. I want to put a special packet in ack payload. but I think nrf_esb.c code can not do. the reason is that when on_radio_disabled_rx() is called, tx(ack operation) already ... (more)

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1
answer
Last activity 2016-05-12 10:27:03 +0100 by Kenneth

nRF24LU and nRF51822 ESB Lib

Hello , RX: nrf24LU Tx: nrf51822 use ESB Lib. But the nrf24 Can't receive data continuous. if I Want receive 2th data , I must power up the nrf24. This is my Code : RFCTL = 0x10; RFCKEN = 1; RF = 1; EA = 1 ... (more)

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Last activity 2016-03-07 08:22:37 +0100 by Håkon Alseth

micro_esb receiver data not update

Hi ~ I use nrf51-micro-esb on GitHub

In Tx-Device: auto sent (data+1) to Rx-Device

But Rx-Device receiver data still the same not Increment....

why in Rx-Device can't receiver Increment data ??

Uart Tx-Device :

Rx Data :0x1e,0x1f,0x20,0x21,0x22 ...
(more)

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1
answer
Last activity 2016-02-29 15:24:12 +0200 by Håkon Alseth

NRF24L01+ Dynamic Payload communicate with 51822

  Dear All:
       My NRF24L01+ use Dynamic PayLoad,What register need configure NRF51822?

NRF24L01+ Configuration as follow:

        SPI_RW_Reg(WRITE_REG + DYNPD, 0x01);//Enable the dynamic payload length of pipe 0

    SPI_RW_Reg(WRITE_REG + FEATURE, 0x04);//Enable the Dynamic Payload Length 

    SPI_RW_Reg(WRITE_REG + EN_AA ...
(more)

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1
answer
Last activity 2015-12-08 13:01:31 +0200 by Håkon Alseth

Questions about micro-esb

Hi everyone, Just a brief introduction about my system, I am currently working on Brain computer Interface which was funded by NSF. In our system we have Sense electronics which will provide 10k samples/sec on each of 8 channels ... (more)

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Last activity 2015-11-11 09:00:42 +0200 by kingqb

The callbacks in esb/gazell not work?How can we run ble and gazell/esb simultaneously?

Hi,I want to use my phone connect to NRF51822 by BLE, and used NRF24LE1 connect NRF51822 by GAZELL/ESB.That is to say, i want to use the device work with gazell/esb protocol and BLE alternatively! I add ... (more)

437
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1
answer
Last activity 2015-10-02 09:49:13 +0100 by Håkon Alseth

nRF51822 ESB Rx and Tx mode enable and disable times

I have a custom board with the nRF51822 chip, the chip is set-up with the recommended (CFAC WLCSP schematic with low voltage mode) setup, excluding the external low frequency clock, according to the [nRF51822_PS v3.1].

In this product specification ... (more)

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Last activity 2015-08-21 08:06:09 +0200 by LKH

ESB Tx Rx alternative

Hi. I'm trying to communicate with legacy nRF24L01P using nrf51822. I received packet from nrf24l01p, but I can't send information back. The data I should send is more than 20bytes, so I cannot use ACK payload. I need ... (more)

353
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1
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1
answer
Last activity 2015-04-30 11:12:39 +0100 by Hung Bui

Tips for minimising power usage

I am making some NRF51822-based temperature sensor nodes, powered by CR2032 coin cells, and I would like to minimise power usage in order to maximise battery life. I am using an external TMP102 temperature sensor, transmitting the temperature using enhanced ... (more)

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1
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1
answer
Last activity 2015-04-08 08:11:59 +0200 by Asbjørn flag of Norway

Is there example OTA DFU code for nRF51822 in 2.4 GHz mode (not BLE)?

Hi all,

I've successfully used the examples for: 1. OTA DFU for nRF51822 in Bluetooth Smart mode. 2. OTA DFU for nRF24LE01 (2.4 GHz mode only).

But I couldn't find OTA DFU example code for nRF51822 in ... (more)

442
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2
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1
answer
Last activity 2015-04-06 20:54:30 +0200 by Daniel Veilleux flag of United States

ESB on nRF51822 with >32 byte payload

I'm working on a project where we're having mulitple nRF51822 chips communicate in a multiceiver way. When we bought the nRF51822 chips, the technical sales rep claimed that they could do ESB with up to 256 byte payloads ... (more)

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Last activity 2015-04-03 16:44:01 +0100 by westhouse

Sub GHz and Bluetooth ( nRF905 and nRF51822 ) = ShockBurst?

Hi,

Is it possible to connect nRF905 to nRF51822 via SPI, add ShockBurst code nRF51822 and then use alternately/simultaneously Sub GHz and Bluetooth communication? I'm making an underwater wireless sensor network and 2,4GHz can't go through ... (more)

358
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4
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1
answer
Last activity 2015-03-23 13:38:57 +0200 by Asbjørn flag of Norway

Where are the examples for nrf51822 using 2.4 GHz in SDK?

Hi,

  1. The device may be talking to a TX/RX station (connected to the Windows PC via USB) that uses an nRF24LU1+ so I'm guessing I will need to use ESB for compatibility. Do I need to load a ...

(more)

262
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no
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1
answer
Last activity 2015-03-23 07:15:11 +0100 by joshuajnoble

building ESB example in nrf51822 SDK w/GCC

When running the makefiles found in the esb/gcc_rx and esb/gcc_tx folders I get the following errors:

base:gcc_tx jnoble$ make
mkdir _build
"/Users/jnoble/hardware/nrf51822/gcc-arm-none-eabi-4_8-2014q2/bin/arm-none-eabi-gcc" -mcpu=cortex-m0 -mthumb -mabi=aapcs -DNRF51 -DBOARD_NRF6310 -DNRF51822_QFAA_CA --std ...
(more)

321
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2
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Last activity 2015-02-24 15:51:00 +0100 by ricardo_marinheiro

ESB listen before talk

Hi,

Does anyone know if ESB example library has LBT implemented?

Been doing a timming mapping between master and slave on packet exchange, and looks like a bit too exact on precise on the receiving and reply times in order ... (more)

1k
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2
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1
answer
Last activity 2014-09-08 14:03:48 +0200 by Håkon Alseth

NRF51 much slower than NRF24? [closed]

Hello!

The company for which I work is migrating from NRF24 to NRF51. Our protocol relies on ESB and uses payloads of 32 bytes and payloads in ack (also 32 bytes).

With NRF24, the PTX could send (and receive the ... (more)

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