It seems it will be relativly easy to implement NRF24 module mode..
using the ADC pin as the interrupt, and the aux pin for the TX/RS strart up, (CE pin of the module)
it uses simple SPI protocol, with few commands etc...we could even make a cable for it.. or a addapter pcb...
did some register read/writes, without any problems using the SPI connections..
here is the terminal
m
1. HiZ
2. 1-WIRE
3. UART
4. I2C
5. SPI
6. 2WIRE
7. 3WIRE
8. LCD
x. exit(without change)
(1)>5
Set speed:
1. 30KHz
2. 125KHz
3. 250KHz
4. 1MHz
(1)>4
Clock polarity:
1. Idle low *default
2. Idle high
(1)>1
Output clock edge:
1. Idle to active
2. Active to idle *default
(2)>2
Input sample phase:
1. Middle *default
2. End
(1)>1
CS:
1. CS
2. /CS *default
(2)>2
Select output type:
1. Open drain (H=Hi-Z, L=GND)
2. Normal (H=3.3V, L=GND)
(1)>2
Ready
SPI>W
POWER SUPPLIES ON
SPI>[0
/CS ENABLED
WRITE: 0x00
SPI>r
READ: 0x08
SPI>r
READ: 0x08
SPI>r]
READ: 0x08
/CS DISABLED
SPI>[0rr]
/CS ENABLED
WRITE: 0x00
READ: 0x08
READ: 0x08
/CS DISABLED
SPI>[1r]
/CS ENABLED
WRITE: 0x01
READ: 0x3F
/CS DISABLED
SPI>[2r]
/CS ENABLED
WRITE: 0x02
READ: 0x03
/CS DISABLED
SPI>[3r]
/CS ENABLED
WRITE: 0x03
READ: 0x03
/CS DISABLED
SPI>[4r]
/CS ENABLED
WRITE: 0x04
READ: 0x03
/CS DISABLED
SPI>[5r]
/CS ENABLED
WRITE: 0x05
READ: 0x02
/CS DISABLED
SPI>[5r]
/CS ENABLED
WRITE: 0x05
READ: 0x02
/CS DISABLED
SPI>[0x25 100]
/CS ENABLED
WRITE: 0x25
WRITE: 0x64
/CS DISABLED
SPI>[5r]
/CS ENABLED
WRITE: 0x05
READ: 0x64
/CS DISABLED
cool, I was thinking about buying a couple of those --- they are so cheap.