RFM31 Datasheet, PDF (76/137 Pages) –

RFM31
Register 0Eh. I/O Port Configuration
Bit
D7
D6
D5
D4
D3
D2
D1
D0
Name Reserved extitst[2] extitst[1] extitst[0]
itsdo
dio2
dio1
dio0
Type
R
R
R
R
R/w
R/w
R/w
R/w
Reset value = 00000000
Bit
Name
Function
7
Reserved
Reserved
External Interrupt Status.
6
extitst[2] If the GPIO2 is programmed to be external interrupt sources then the status
can be read here.
External Interrupt Status.
5
extitst[1] If the GPIO1 is programmed to be external interrupt sources then the status
can be read here.
External Interrupt Status.
4
extitst[0] If the GPIO0 is programmed to be external interrupt sources then the status
can be read here.
Interrupt Request Output on the SDO Pin.
3
itsdo
nIRQ output is present on the SDO pin if this bit is set and the nSEL input is
inactive (high).
Direct I/O for GPIO2.
If the GPIO2 is configured to be a direct output then the value on the GPIO pin
2
dio2
can be set here. If the GPIO2 is configured to be a direct input then the value of
the pin can be read here.
Direct I/O for GPIO1.
If the GPIO1 is configured to be a direct output then the value on the GPIO pin
1
dio1
can be set here. If the GPIO1 is configured to be a direct input then the value of
the pin can be read here.
Direct I/O for GPIO0.
If the GPIO0 is configured to be a direct output then the value on the GPIO pin
0
dio0
can be set here. If the GPIO0 is configured to be a direct input then the value of
the pin can be read here.
76
Tel: [phone] Fax: [phone] E-mail: [e-mail] http://www.hoperf.com