Setting MODE with TIFS enabled

[phamdacphuoc]

Hello,

I am trying to change PHY after packet sent/received (known as asymmetric PHY).

After receiving EVENT_END, i write to register MODE to change the PHY.

This can be described :

Master:   TX(1M)-(change PHY)-----(TIFS)----------RX(2M)

Slave:     RX(1M)-(change PHY)-----(TIFS)----------TX(2M)

The problem is, this doesn't work on Slave, after RX with 1M, the slave do TX with 1M . I checked the register MODE on slave before and after TX, they changed to 2M, but the packet I observed on the sniffer was only 1M.

This worked on Master, I checked my implementation with other devices, and it works, as a master.

So I am wondering if this is a bug with the register MODE ?

[Jørgen Holmefjord]

Hi,

Have you considered using our softdevices?

Is both the Master and the Slave Nordic devices?

Best regards,
Jørgen

[phamdacphuoc]

Hello,

Not so sure about softdevices, but I used NRFconnect with nrf52840 dvk and they work.

[phamdacphuoc]

Hello,

I wrote to register MODE to change phy after receiving EVENT_PAYLOAD and now it works. So I think writing MODE after receiving EVENT_END is too late for the radio to change mode. So it 's not correct according to the nrf spec, but at least it works.

Best regards,