nRF24L01+ -> nRF24LU1+ RF communication.

RE: nRF24L01+ -> nRF24LU1+ RF communication.

Hung Bui — Thu, 15 Jun 2017 14:32:11 GMT

Ha ha thanks. But disabling CRC is not the solution. It's only to check what would cause the issue. No CRC check will result getting corrupted packet without detecting it. With your result, it could be that the CRC setting was wrong.

I would suggest you to check the raw packet you receive to see any corruption (when you have no CRC)

RE: nRF24L01+ -> nRF24LU1+ RF communication.

powerup — Tue, 13 Jun 2017 10:01:16 GMT

I turned off CRC, It worked really well !!

Thank you so much.

You were a great help to me

Are you a genius? or you must be a saviour of mankind.

If you don't mind, could you tell me how to figure out the solution?

It said "The CRC is the error detection mechanism in the packet." in the datasheet. What role does it play in communication?

Again, Thank you so much and I really appreciate for your help.

RE: nRF24L01+ -> nRF24LU1+ RF communication.

Hung Bui — Fri, 09 Jun 2017 12:53:52 GMT

nRF24LU1 and nRF24L01+ should be able to talk to each other. We have millions of product doing that out there on the market (wireless mouse keyboard, etc).

Please follow my suggestion.

RE: nRF24L01+ -> nRF24LU1+ RF communication.

powerup — Fri, 09 Jun 2017 09:59:23 GMT

nRF24L01+ nRF24LU1+ is available for communication? TT TT

nRF24L01+ <-> nRF24L01+ The communication was successful.

RE: nRF24L01+ -> nRF24LU1+ RF communication.

Hung Bui — Thu, 08 Jun 2017 12:26:24 GMT

Thanks for updating the case, the address setting was much different before the update.

From the configuration you sent I can't find anything wrong with that.

My suggestions are:

Try to test with no CRC. This is to check if there is lots of interference or if the radio on the nRF24LU1 was not good. Have you tried to use 2 nRF24LU1/LE1 to talk to each other ?
Read the radio configuration register on the L01 and compare with the register on the LU1. This is to verify that the writing from the STM to the L01 was correct. And so that we can reproduce here.

RE: nRF24L01+ -> nRF24LU1+ RF communication.

powerup — Thu, 08 Jun 2017 09:29:52 GMT

?!?!?!!?

nrf24l01

nRF24_SetRFChannel(2);

static const uint8_t nRF24_ADDR[] = { 0xE7,0xE7,0xE7,0xE7,0xE7 };

nrf24lu1

hal_nrf_set_rf_channel(2);

hal_nrf_set_address(HAL_NRF_PIPE1, default_pipe_address);

// static uint8_t xdata default_pipe_address[5] = PIPE_ADDRESS; (#define PIPE_ADDRESS {0xE7,0xE7,0xE7,0xE7,0xE7})

Is this not a match??!?!?!?!!?

Sometimes I thought the address and channel were consistent because the data was received.

RE: nRF24L01+ -> nRF24LU1+ RF communication.

Hung Bui — Thu, 08 Jun 2017 08:23:24 GMT

If you use those code, address and channel doesn't match. You need to create very simple code to test.

RE: nRF24L01+ -> nRF24LU1+ RF communication.

powerup — Thu, 08 Jun 2017 08:05:06 GMT

I posted the code.

The 01+ code was referenced in github.

The U1 + code was referenced to enhanced_shockburst_prx_nrf24lu1p in nRFgo SDK 2.3.0.10040.

NRF24L01+ <-> nRF24L01+ communication is good.

RE: nRF24L01+ -> nRF24LU1+ RF communication.

Hung Bui — Wed, 07 Jun 2017 16:32:19 GMT

Please follow what I suggested, use Appendix A. Also please post your code where you configure the radio, on both nRF24L01 and nRF24LU1.

RE: nRF24L01+ -> nRF24LU1+ RF communication.

powerup — Wed, 07 Jun 2017 13:49:40 GMT

Normally, no data is received.

However, very occasionally data is received. only once.

I will go crazy.

RE: nRF24L01+ -> nRF24LU1+ RF communication.

Hung Bui — Wed, 07 Jun 2017 07:55:35 GMT

@Powerup: I don't see the point of creating a new case. You can always edit the question and add more information in. And why would you say here "sometimes an interrupt occurs" but in the other case you mentioned "there is no reaction at all " ?

The example for STM you pointed to, looks a little bit complex. I would suggest you to create a very simple one, try to follow Appendix A in the nRF24L01P product spec. Make sure you match the address on the nRF24L01P and the nRF24LU1. I'm not sure which address you are using. Then match the RF channel you use, and other setting such as ACK, number CRC bytes, data rate, etc.

RE: nRF24L01+ -> nRF24LU1+ RF communication.

powerup — Wed, 07 Jun 2017 02:47:45 GMT

I updated the question again in detail.

devzone.nordicsemi.com/.../

RE: nRF24L01+ -> nRF24LU1+ RF communication.

powerup — Wed, 07 Jun 2017 02:44:58 GMT

You are viewing NRF_ISR () triggered by the HAL_NRF_RX_DR event. Sometimes an interrupt occurs, but sometimes it does not.

RE: nRF24L01+ -> nRF24LU1+ RF communication.

Hung Bui — Tue, 06 Jun 2017 11:51:53 GMT

NRF_ISR() is as description, the radio interrupt. It's defined in isrdef24lu1p.h Do you see the NRF_ISR() triggered with HAL_NRF_RX_DR event on the PRX side ?

What exactly you meant by "the interrupt timing of the NRF_ISR () function is different" ?

RE: nRF24L01+ -> nRF24LU1+ RF communication.

powerup — Mon, 05 Jun 2017 08:53:58 GMT

NRF_ISR () When does this function's interrupt occur?

RE: nRF24L01+ -> nRF24LU1+ RF communication.

Hung Bui — Fri, 02 Jun 2017 09:14:39 GMT

Sorry I was not clear in my answer. I suggest that so that you can test the Radio and make sure the 2 chips can talk to each other, after that you can implement HID or copy the code for RF setting and add it into the HID example.

In the ESB example, you can verify if the RF communication is successful by turning off or on an LED for example, depends if the bit you send is 1 or 0.

RE: nRF24L01+ -> nRF24LU1+ RF communication.

powerup — Fri, 02 Jun 2017 03:53:20 GMT

If you use the example, it will not recognize it as a USB device. Also, how do you know that RF communication is successful?

RE: nRF24L01+ -> nRF24LU1+ RF communication.

Hung Bui — Thu, 01 Jun 2017 11:32:07 GMT

I would suggest you to write you code for nRF24LU1 based on the ESB example we have in the nRFGo SDK instead of using the nAN-22. The example is inside \nRFgo SDK 2.3.0.10040\source_code\projects\nrfgo_sdk\enhanced_shockburst_examples

If you have 2 nRF24LU1 board you can test and make sure they talk to each other first, then you can test with nRF24L01P