參數(shù)資料
型號: MRF24J40-I
廠商: Microchip Technology Inc.
英文描述: IEEE 802.15.4⑩ 2.4 GHz RF Transceiver
中文描述: IEEE 802.15.4標(biāo)準(zhǔn)⑩2.4 GHz射頻收發(fā)器
文件頁數(shù): 41/66頁
文件大?。?/td> 748K
代理商: MRF24J40-I
2006 Microchip Technology Inc.
Advance Information
DS39776A-page 39
MRF24J40
9.0
GENERAL PURPOSE I/O
9.1
GPIO Registers
The MRF24J40 has 6 available, general purpose I/O
pins. These pins are interfaced through the GPIO and
TRISGPIO registers.
EXAMPLE 9-1:
READ/WRITE EXAMPLE
REGISTER 9-1:
GPIO: GPIO PORT REGISTER
U-0
U-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
GPIO5
GPIO4
GPIO3
GPIO2
GPIO1
GPIO0
bit 7
bit 0
Legend:
R = Readable bit
-n = Value at POR
W = Writable bit
‘1’ = Bit is set
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown
bit 7-6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
Unimplemented:
Read as ‘
0
GPIO5:
General Purpose I/O GPIO5 bit
GPIO4:
General Purpose I/O GPIO4 bit
GPIO3:
General Purpose I/O GPIO3 bit
GPIO2:
General Purpose I/O GPIO2 bit
GPIO1:
General Purpose I/O GPIO1 bit
GPIO0:
General Purpose I/O GPIO0 bit
SetShortAddress(TRISGPIO,0x03); //set GPIO5-2 to output, and GPIO 1-0 as input
SetShortAddress(GPIO,0x01); //set GPIO0 high and GPIO1 as low.
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