i'm trying to configure the nrf to rx and according to the state diagram i realized that: as the nrf is supplied and the voltage goes over 1,9V the nrf goes in the power down mode. i should be able to send via spi the command to set the pwr_up bit to 1 to allow the nrf to go the stand_by 1 state and after the 1,5ms needed to the nrf i should set both ce and prim_rx to 1, am i wrong? The main problem is that the nrf is ignoring the writing command; are needed other instrunction? (i also tried to first read the config_Register and then to put it in a bit-a-bit or to my data byte and then sending the resulting byte to nrf but with 0 result. p.s the reading command isn't having any problem )