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参数资料
| 型号： | DC-ANT-24DT-25 |
| 厂商： | Digi International |
| 文件页数： | 21/42页 |
| 文件大小： | 530K |
| 描述： | ANTENNA 2.4GHZ DESKTOP 2DBI 25PC |
| 标准包装： | 1 |
| 频带数目： | 1 |
| 频率： | 2.4GHz |
| 增益： | 1.8dBi |
| 包装： | 散装 |
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21
GPIO Pin Use
LEDs
General information
The device server has two types of LEDs:
LEDs connected directly to GPIO pins on the processor and controlled directly
in software
LEDs connected to other hardware components (normally the Ethernet
hardware) and not directly programmable by the operating system
The development kit supplies software to control the LEDs. This behavior can often be
modified by manipulating the LED table in the BSP code. See gpio.c for details.
As with any GPIO output, the GPIO register must be properly configured in order to assert
values on the pin. The appropriate bits should be configured as:
CMODE = 0
CDIR = 1
GPIO Pin Use
Register Bit
Category
External
Interface
Description
PORTA7 - PORTA0
Reserved
NA
NA
PORTC7
Reserved
NA
NA
PORTC6
Allocated
Connected to the
red LED
Used as a power indicator (always on). It could
be reassigned as a general purpose LED. It
must remain a GPIO output for the LED to
operate correctly. The LED is lit when the
signal is a logic "high."
PORTC5
Available
Connected to the
reset button.
It should be configured as a GPIO input.
PORTC4 - PORTC0
Reserved
NA
NA
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