After entering into Standby-II state, how can 24L01+ change state to Standby-I?

[Tony Yuan]

Based on the nRF24L01P Product Specification 1.0, after 24L01+ enters into Standby-II state, the only 2 ways to leave this state are 1, set PWR_UP to 0, 2; 2, Feed data into TX FIFO. 

Can I set CE to 0 to change the state to Standby-I, and set PRIM_RX = 1 and CE to 1 again to make 24L01+ enter "RX Setting 130uS state"?

thanks in advance. 

[Tony Yuan]

in "Appendix A - Enhanced ShockBurst - Configuration and communication
example"

"7, If nRF24L01+ is in standby-II mode, it goes to standby-I mode immediately if CE is set low." 

The Figure 4, state diagram for Standby-II part is WRONG. 

[Håkon Alseth]

I am not sure I understand what you mean here. Figure 4 states that if PRIM_RX=0, and CE = 0, it will go into standby-I. If CE=1, it will go into Standby-II.

If PRIM_RX=1, you never enter Standby-II.

 

Best regards,

Håkon

[Tony Yuan]

The case is 24L01P enters into TX mode with CE keeps high, after TX FIFO data has been sent, 24L01P enters into Standby-II. Then based on Figure 4, there are ONLY two ways to leave Standby-II. 

But based on 

"Appendix A - Enhanced ShockBurst - Configuration and communication example"

"7, If nRF24L01+ is in standby-II mode, it goes to standby-I mode immediately if CE is set low." 

you can see that, even 24L01P is in Standby-II state, if the CE is set to low, it will enter Standby-I. In figure 4, this transition path is not drawn on it. 

Figure 4 confused me, when I want to do TX and then RX function. So I said it maybe WRONG. 

thanks,

Tony

[Håkon Alseth]

Thanks for the explanation. The issue is that you cannot go directly from Standby-II to Standby-I based on the logic diagram given in figure 4, which as you point out; is incorrect.

This figure lacks one "CE=0" arrow from Standby-II to Standby-I. I'll report this internally.

 

Kind regards,

Håkon

[Tony Yuan]

Thank you for your confirmation!