about CONFIG_ESB_FAST_SWITCHING

[Liny]

1. 我想在 nrf 54l15 中使用 CONFIG_ESB_FAST_SWITCHING，但好像 l15 不支持，只能在 H 系列上使用？ 
如果 l15 支持，我该如何使用呢？通过移除 SOC_NRF54H20_CPURAD 来实现吗？

2. 顺便问一下，为什么 CONFIG_ESB_FAST_SWITCHING和  不能 共存？它们之间有什么冲突吗？ESB_SHORT_DISABLE_MASK 

3. 如果我配置了 CONFIG_ESB_FAST_SWITCHING，禁用后接收端不会生成，功耗会增加吗？我该如何降低功耗？

4.what's the different between events_phyend and events_end of radio? if i read rx_payload while enents_phyend generate, will i loss data? can i use events_end instead events_phyend in nrf54l15, like nrf52 series

[Hieu]

Hi Liny,

Could you please rewrite your post in English? I tried using a machine translator, but the result seems wrong, and I can't understand the questions, aside from #1.

Regarding #1, it's indeed true that ESB Fast Switching is only supported experimentally on the nRF54H20. It is simply not supported on the nRF54L15 at the moment.

Hieu

[Liny]

1.

Regarding the first point, I would like to inquire: is the radio fast switching feature completely unavailable on the nRF54L15? Or does the nRF54L15 support this feature, but it hasn't been thoroughly validated and may lead to unpredictable effects? I noticed that the NRF54L15 chip manual includes this register, which is a very important detail. Thank you!

[longrain]

https://github.com/LRchangyu/nrf54l_radio

Check if this can help.

[Hieu]

Hi Liny,

I can't comment on longrain's project due to unfamiliarity with it.

As for the ESB Fast Switching feature, I don't have the liberty to say anything about how much a feature has been investigated or developed or tested. Could you please have a word with your local Nordic sales contact?

I am out of office now but will return on Tuesday and look into your technical questions if they are applicable to the nRF54L15.

Hieu

[Doris.chen]

Any updates?
I'm also using this feature with NCS v3.1 on nRF54L15, and I'm wondering if enabling CONFIG_ESB_FAST_SWITCHING manually could help achieve faster transmission speed.
Currently, the TX/RX switching time seems too slow, so I’m looking for a way to improve it.

[Hieu]

Hi Liny and Doris.chen,

My apologies for the lack of update.
The Fast Switching feature on the nRF54L15 Radio can be used to implement ESB Fast Switching, and it would help reducing TX-RX switching time.
However, ESB Fast Switching on the nRF54L15 isn't supported yet in the SDK. As mentioned before, I can't comment on when it will be implemented, and you will need to contact our Sales team for that.

If you need help getting in touch with a Sales representative, I can help with that.

Hieu