OK. I have a Fio with a nRF24l01 connected to the I2C with pin 9 connected to CE. I am trying to verify that it is working, so I have been trying to follow this post Playing with NRF24L01, not working, need help debugging - Networking, Protocols, and Devices - Arduino Forum to print the radio detail…

trying to debug with radio.printDetails()

Topic		Replies	Views
RF24 radio.printDetails Halting Programming	6	3966	May 5, 2021
NRF24L01 problem Programming	9	2157	May 5, 2021
NRF24L01 not working, printDetails gives zeroes, schematics provided! Networking, Protocols, and Devices	3	2488	May 6, 2021
RF24 library "radio.printdetails" does not print anything Networking, Protocols, and Devices	3	4081	May 6, 2021
nrf24l01 radio.printDetails(); before opening pipe for reading/writing Networking, Protocols, and Devices	10	9111	May 6, 2021