nRF24LE1 250Kbps not working?

[mr_creosote]

Hi, I can't get 250Kbps working on the nRF24LE1. I'm using the enhanced shockburst examples in the nRFgo SDK (enhanced_shockburst_ptx_nrf2 and enhanced_shockburst_prx_nrf2). I added a call to hal_nrf_set_datarate:

  // Power up radio
  hal_nrf_set_power_mode(HAL_NRF_PWR_UP);
  hal_nrf_set_datarate(HAL_NRF_250KBPS);
    //HAL_NRF_1MBPS,          /**< Datarate set to 1 Mbps  */
    //HAL_NRF_2MBPS,          /**< Datarate set to 2 Mbps  */

It works fine if I change it to 2Mbps and 1Mbps. I'm changing the data rate at both the transmitter and the receiver, of course. What am I doing wrong?

Thanks!

[KarenHeinz]

Are you 100% certain they are all NRF24L01+ 's? The older NRF24L01 doesn't support 250k. If you are using Auto Retransmission, is your Auto Retransmit Delay long enough? Try 1500μs or more. Thank You Writer at cheap essay writing service

[mr_creosote]

Hi Karen, It's an nRF24LE1 (radio + 8051 processor), not an nRF24L01+ (radio only). Per documentation, it should support 250K. The two modules are right next to each other and not a single packet goes through. So the auto retransmit delay shouldn't be the issue. I'll test it, regardless. Any other ideas? Thanks!

[mr_creosote]

Changing the retransmit delay did the trick!! i added the following function call:

hal_nrf_set_auto_retr(3U, 750); // retry 3 times with a 750ms pause between them.

[KimC]

I have the same dilemma, and no matter what code I put in, I always end up on the wrong side. I am getting frustrated as I am also trying to finish my essay with some help from Premier essay. I can't just paste the whole script here as it may take few pages.

[mr_creosote]

this seems to be spam. don't click on the link provided. if i'm mistaken, please post all your code here.