CODEWITHSUNDEEP
node.jsnetwork-programmingarduinogpio
frinux
frinux

Reputation: 2092

nrf24l01+ between arduino and raspberry Pi in NodeJS

I'm trying to retrieve my sensor data from my Raspberry Pi using nrf24l01+ network receiver.

I'm sending it from an Arduino nano board. Here is the setting of my Arduino:

STATUS       = 0x0e RX_DR=0 TX_DS=0 MAX_RT=0 RX_P_NO=7 TX_FULL=0
RX_ADDR_P0-1     = 0xcccccc3ccc 0xcccccc3c3c
RX_ADDR_P2-5     = 0x33 0xce 0x3e 0xe3
TX_ADDR      = 0xcccccccc3c
RX_PW_P0-6   = 0x20 0x20 0x20 0x20 0x20 0x20
EN_AA        = 0x3e
EN_RXADDR    = 0x3f
RF_CH        = 0x5a
RF_SETUP     = 0x07
CONFIG       = 0x0f
DYNPD/FEATURE    = 0x3f 0x04
Data Rate    = 1MBPS
Model        = nRF24L01+
CRC Length   = 16 bits
PA Power     = PA_MAX

My Raspberry Pi is plugged with nrf24l01+ through GPIO. I made sure the connection is OK by using the C++ example given on https://github.com/TMRh20/RF24:

RF24 radio(RPI_BPLUS_GPIO_J8_15,RPI_BPLUS_GPIO_J8_24, BCM2835_SPI_SPEED_8MHZ);

The data is OK. Now i want to use a nodeJS program to get this data. I'm using this library: https://github.com/natevw/node-nrf

The code is very simple, but somehow is not working (console is silent):

var spiDev = "/dev/spidev0.0";
var cePin = 15; //RPI_BPLUS_GPIO_J8_15
var irqPin = null;
var channel = 0x5a; //90

var radio = require('nrf').connect(spiDev, cePin, irqPin);

radio
    .channel(channel)
    .dataRate('1Mbps')
    .crcBytes(1)
//  .autoRetransmit({count:15, delay:4000})
    ;

radio.begin(function () {
    var rx = radio.openPipe('rx', 0xcccccccc3c);
    rx.pipe(process.stdout);
});

I'm wondering what I'm doing wrong. Hardware is OK and the setting seems pretty good, what do you think?

Thanks

Upvotes: 4

Views: 1817

Answers (1)

Paul T. Rawkeen
Paul T. Rawkeen

Reputation: 4114

Usually to find out what is wrong with NRF you should start from basics:

  1. Try simpler NRF configs to test if its working, especially with no CRC bytes etc.
  2. Try it w/o dynamic payload and try fixed payload size on both ends.
  3. Auto-acknowledge also can be an issue (note that when auto-ack is enabled, CRC can't be disabled as it is used to ensure transmission acknowledgement in this mode).
  4. Ensure that CRC lengths match on both ends. In your example on Arduino you have CRC Length = 16 bits whether Raspberry configured with radio.crcBytes(1).
  5. Don't rely on default values, always provide same full configuration on both ends.

These steps can considerably reduce time to locate the problem especially when using different libraries and platforms.

Upvotes: 1

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