LM3S301 Luminary Micro, Inc, LM3S301 Datasheet - Page 110
LM3S301
Manufacturer Part Number
LM3S301
Description
Lm3s301 Arm Microcontroller
Manufacturer
Luminary Micro, Inc
Datasheet
1.LM3S301.pdf
(366 pages)
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General-Purpose Input/Outputs (GPIOs)
110
GPIO pads and the control register settings required to achieve them. Table 8-2 shows how a
rising edge interrupt would be configured for pin 2 of a GPIO port.
Table 8-1. GPIO Pad Configuration Examples
a. X=Ignored (don’t care bit)
Table 8-2. GPIO Interrupt Configuration Example
a. X=Ignored (don’t care bit)
Digital Input (GPIO)
Digital Output (GPIO)
Open Drain Input (GPIO)
Open Drain Output (GPIO)
Digital Input (Timer CCP)
Digital Output (PWM)
Digital Output (Timer PWM)
Digital Input/Output (SSI)
Digital Input/Output (UART)
Analog Input (Comparator)
Digital Output (Comparator)
Register
GPIOIS
GPIOIBE
GPIOIEV
GPIOIM
?=Can be either 0 or 1, depending on the configuration
Configuration
Desired Interrupt
1=High level, or
0=Low level, or
Event Trigger
0=single edge
negative edge
1=not masked
1=both edges
positive edge
0=masked
0=edge
1=level
0
0
0
0
1
1
1
1
1
0
1
Preliminary
X
X
X
7
0
X
X
X
X
X
X
0
1
0
1
0
X
X
X
6
0
0
0
1
1
0
0
0
0
0
0
0
5
X
X
X
0
1
1
1
1
1
1
1
1
1
0
1
Register Bit Value
Pin 2 Bit Value
X
X
?
?
?
?
?
?
?
0
?
X
X
X
4
0
X
X
?
?
?
?
?
?
?
0
?
3
X
X
X
0
a
a
X
X
X
X
?
?
?
?
?
?
?
2
0
0
1
1
X
X
X
X
?
?
?
?
?
?
?
1
X
X
X
0
July 5, 2006
X
X
X
X
?
?
?
?
?
?
?
X
X
X
0
0
X
X
X
X
?
?
?
?
?
?
?
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