nRF24L01+ Configuration vs Reliable Link...

RE: nRF24L01+ Configuration vs Reliable Link...

Sammy_123 — Thu, 14 Jul 2016 10:18:09 GMT

So my problem turned out to be dodgy SPI drivers from Microchip... Once I probed the SCLK line, I only ever saw one byte (8 pulses). My application was supposed to be sending 4 bytes of TX payload (i.e. 4+1 bytes) to the nRF24L01+. I wrote some software to bit-bang the SPI port and it worked first time!!! Who would have thought.

RE: nRF24L01+ Configuration vs Reliable Link...

Hung Bui — Thu, 30 Jun 2016 13:52:54 GMT

@Sammy: If you want to keep the format you can add them as code (the 10101 button). But still, it's hard for me to understand what's going on here from the log. Could you give some information on your test result, did you managed to send anything from one side to the other ?

RE: nRF24L01+ Configuration vs Reliable Link...

Sammy_123 — Thu, 30 Jun 2016 13:31:55 GMT

Your forum re-formats my cut and paste =( you should really fix that!!

RE: nRF24L01+ Configuration vs Reliable Link...

Hung Bui — Thu, 30 Jun 2016 12:58:50 GMT

@Sammy: I don't know how to read your log, please explain in easier to understand way. How unreliable it was ? How did you test ?

RE: nRF24L01+ Configuration vs Reliable Link...

Sammy_123 — Thu, 30 Jun 2016 12:34:48 GMT

So I bought more units from'Seeed Studio' and am having the same problem... I've put my serial port dump of the setup sequence below.... I think (other than a hardware issue, this is the most likely cause of my problems...)

INIT PTX
CMD: 20 DATA: 7E
CMD: 21 DATA: 1
CMD: 22 DATA: 1
CMD: 23 DATA: 3
CMD: 24 DATA: 34
CMD: 25 DATA: C
CMD: 26 DATA: 24
CMD: 2A DATA: 1 2 3 4 5
CMD: 30 DATA: 1 2 3 4 5
CMD: 31 DATA: 4
CMD: 3C DATA: 1
CMD: 3D DATA: 6
CMD: 27 DATA: 70
CMD: FLUSH_TX
CMD: FLUSH_RX
INIT PTX COMPLETE
STATUS: E
  TX FIFO EMPTY
  RX FIFO EMPTY
STATUS: E
  TX FIFO EMPTY
  RX FIFO EMPTY
STATUS: E
  TX FIFO EMPTY
  RX FIFO EMPTY
STATUS: E
  TX FIFO EMPTY
  RX FIFO EMPTY
PTX TX DATA: 0 85 254 140
STATUS: 1E
  MAX RT INT!
  TX FIFO EMPTY
  RX FIFO EMPTY
STATUS: E
  TX FIFO EMPTY
  RX FIFO EMPTY
STATUS: E
  TX FIFO EMPTY
  RX FIFO EMPTY
STATUS: E
  TX FIFO EMPTY
  RX FIFO EMPTY
PTX TX DATA: 1 85 254 140
STATUS: 1E
  MAX RT INT!
  TX FIFO EMPTY
  RX FIFO EMPTY
STATUS: E
  TX FIFO EMPTY
  RX FIFO EMPTY
STATUS: E
  TX FIFO EMPTY
  RX FIFO EMPTY
STATUS: E
  TX FIFO EMPTY
  RX FIFO EMPTY
PTX TX DATA: 2 85 254 140
================================
INIT PRX
CMD: 20 DATA: 7F
CMD: 21 DATA: 1
CMD: 22 DATA: 1
CMD: 23 DATA: 3
CMD: 24 DATA: 34
CMD: 25 DATA: C
CMD: 26 DATA: 24
CMD: 2A DATA: 1 2 3 4 5
CMD: 31 DATA: 4
CMD: 3C DATA: 1
CMD: 3D DATA: 6
CMD: 27 DATA: 70
CMD: FLUSH_TX
CMD: FLUSH_RX
INIT PRX COMPLETE
STATUS: E
  TX FIFO EMPTY
  RX FIFO EMPTY
STATUS: E
  TX FIFO EMPTY
  RX FIFO EMPTY
STATUS: E
  TX FIFO EMPTY
  RX FIFO EMPTY
STATUS: E
  TX FIFO EMPTY
  RX FIFO EMPTY

RE: nRF24L01+ Configuration vs Reliable Link...

Hung Bui — Wed, 22 Jun 2016 08:42:59 GMT

Hi Sammy,

If it's from ebay, there is more chance that it's a counterfeit. It may works in some case and in some case it wouldn't. We recommend you to get the module from our distributor. Please find the list of the distributor on our website in the footer.

RE: nRF24L01+ Configuration vs Reliable Link...

Sammy_123 — Tue, 21 Jun 2016 13:32:43 GMT

ebay supplier (china I presume)

YJ-15008+PA is the part.. or at least what is written on the PCB

RE: nRF24L01+ Configuration vs Reliable Link...

Hung Bui — Tue, 21 Jun 2016 12:47:01 GMT

15091T isn't in the list of counterfeit chip, but are you sure it's 1T at the end ? It should be 2 letters. such as LL or AB etc. Where did you get the chip from ?

RE: nRF24L01+ Configuration vs Reliable Link...

Sammy_123 — Tue, 21 Jun 2016 12:26:07 GMT

dot

NRF 0

24L01+

15091T

RE: nRF24L01+ Configuration vs Reliable Link...

Hung Bui — Tue, 21 Jun 2016 11:28:27 GMT

@Sammy: If you can read and tell me the laser marking on your chip, I can check and see if it's a fake chip or not.

RE: nRF24L01+ Configuration vs Reliable Link...

Sammy_123 — Tue, 21 Jun 2016 11:21:28 GMT

I had my suspicions about the counterfeit chip??

RE: nRF24L01+ Configuration vs Reliable Link...

Hung Bui — Tue, 21 Jun 2016 10:40:49 GMT

Hi Sammy,

Have you tried to follow the example instruction at the Appendix A in the nRF24L01P product specification ? You said that you haven't got any reliable communication, how was it ? Have you still managed to get some packets ? Also, please be assured that you got genuine Nordic's nRF24L01+ chip, we did see counterfeit chip from China. Please read the chip laser marking so we can check.

We don't have an example code for PIC and nRF24L01+, but maybe you want to have a look at this or this.