Having problems with nrf24l01 when trying to send multiple bytes

I've got everything working well using single byte payloads but when I try to send multiple byte payloads (tried 2 and 5 bytes so far). All I get is the last byte sent no matter how I try to send and receive it. I've tried 10 different code layouts on the transmit and receive side and checked the registers 100 times yet I can't figure out the problem. Both a and b end up displaying 3 instead of a displaying 1 and b displaying 3. Does anyone know what's going on?

Code for 2 byte receive:

Code:

---

low csn
shiftout si, sck, 1, [01100001, 0, 0]
shiftin so, sck, 0, [a, b]
 

high csn

---

code for 2 byte transmit:

Code:

---

low csn
shiftout si, sck, 1, [10100000, 1, 3]
high csn

---

Multi byte problem solved, now I can't get them to work with anything but default addresses. Any change to one or both and I lose link. Any ideas? I write 5 bytes to the tx_addr register on the tx and the same 5 bytes to the rx address register for pipe 0 (forget the exact name) and lose link, comment out the code and regain link. ???

if you want to post your complete code for the test setup might be better than describing the outcome

Never mind, got it fixed a little while ago, didn't realize I had to set both registers on both modules even for 1 way data transfer.

Hi Rudyauction509

Would you be willing to share your code?

What an odd handle, private joke?

George

here some stuff i found on the net , cant remember where it was but it a good start