Texas Instruments Development Kit for TM4C129x,Tiva™ ARM® Cortex™ -M4 Microcontroller DK-TM4C129X DK-TM4C129X Datenbogen
Produktcode
DK-TM4C129X
Register 1: GPIO Data (GPIODATA), offset 0x000
The GPIODATA register is the data register. In software control mode, values written in the
GPIODATA register are transferred onto the GPIO port pins if the respective pins have been
configured as outputs through the GPIO Direction (GPIODIR) register (see page 791).
GPIODATA register are transferred onto the GPIO port pins if the respective pins have been
configured as outputs through the GPIO Direction (GPIODIR) register (see page 791).
In order to write to GPIODATA, the corresponding bits in the mask, resulting from the address bus
bits [9:2], must be set. Otherwise, the bit values remain unchanged by the write.
bits [9:2], must be set. Otherwise, the bit values remain unchanged by the write.
Similarly, the values read from this register are determined for each bit by the mask bit derived from
the address used to access the data register, bits [9:2]. Bits that are set in the address mask cause
the corresponding bits in GPIODATA to be read, and bits that are clear in the address mask cause
the corresponding bits in GPIODATA to be read as 0, regardless of their value.
the address used to access the data register, bits [9:2]. Bits that are set in the address mask cause
the corresponding bits in GPIODATA to be read, and bits that are clear in the address mask cause
the corresponding bits in GPIODATA to be read as 0, regardless of their value.
A read from GPIODATA returns the last bit value written if the respective pins are configured as
outputs, or it returns the value on the corresponding input pin when these are configured as inputs.
All bits are cleared by a reset.
outputs, or it returns the value on the corresponding input pin when these are configured as inputs.
All bits are cleared by a reset.
GPIO Data (GPIODATA)
GPIO Port A (AHB) base: 0x4005.8000
GPIO Port B (AHB) base: 0x4005.9000
GPIO Port C (AHB) base: 0x4005.A000
GPIO Port D (AHB) base: 0x4005.B000
GPIO Port E (AHB) base: 0x4005.C000
GPIO Port F (AHB) base: 0x4005.D000
GPIO Port G (AHB) base: 0x4005.E000
GPIO Port H (AHB) base: 0x4005.F000
GPIO Port J (AHB) base: 0x4006.0000
GPIO Port K (AHB) base: 0x4006.1000
GPIO Port L (AHB) base: 0x4006.2000
GPIO Port M (AHB) base: 0x4006.3000
GPIO Port N (AHB) base: 0x4006.4000
GPIO Port P (AHB) base: 0x4006.5000
GPIO Port Q (AHB) base: 0x4006.6000
GPIO Port R (AHB) base: 0x4006.7000
GPIO Port S (AHB) base: 0x4006.8000
GPIO Port T (AHB) base: 0x4006.9000
Offset 0x000
Type RW, reset 0x0000.0000
GPIO Port B (AHB) base: 0x4005.9000
GPIO Port C (AHB) base: 0x4005.A000
GPIO Port D (AHB) base: 0x4005.B000
GPIO Port E (AHB) base: 0x4005.C000
GPIO Port F (AHB) base: 0x4005.D000
GPIO Port G (AHB) base: 0x4005.E000
GPIO Port H (AHB) base: 0x4005.F000
GPIO Port J (AHB) base: 0x4006.0000
GPIO Port K (AHB) base: 0x4006.1000
GPIO Port L (AHB) base: 0x4006.2000
GPIO Port M (AHB) base: 0x4006.3000
GPIO Port N (AHB) base: 0x4006.4000
GPIO Port P (AHB) base: 0x4006.5000
GPIO Port Q (AHB) base: 0x4006.6000
GPIO Port R (AHB) base: 0x4006.7000
GPIO Port S (AHB) base: 0x4006.8000
GPIO Port T (AHB) base: 0x4006.9000
Offset 0x000
Type RW, reset 0x0000.0000
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
reserved
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
Type
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Reset
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
DATA
reserved
RW
RW
RW
RW
RW
RW
RW
RW
RO
RO
RO
RO
RO
RO
RO
RO
Type
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Reset
Description
Reset
Type
Name
Bit/Field
Software should not rely on the value of a reserved bit. To provide
compatibility with future products, the value of a reserved bit should be
preserved across a read-modify-write operation.
compatibility with future products, the value of a reserved bit should be
preserved across a read-modify-write operation.
0x0000.00
RO
reserved
31:8
GPIO Data
This register is virtually mapped to 256 locations in the address space.
To facilitate the reading and writing of data to these registers by
independent drivers, the data read from and written to the registers are
masked by the eight address lines [9:2]. Reads from this register return
its current state. Writes to this register only affect bits that are not masked
by ADDR[9:2] and are configured as outputs. See “Data Register
Operation” on page 780 for examples of reads and writes.
To facilitate the reading and writing of data to these registers by
independent drivers, the data read from and written to the registers are
masked by the eight address lines [9:2]. Reads from this register return
its current state. Writes to this register only affect bits that are not masked
by ADDR[9:2] and are configured as outputs. See “Data Register
Operation” on page 780 for examples of reads and writes.
0x00
RW
DATA
7:0
December 13, 2013
790
Texas Instruments-Advance Information
General-Purpose Input/Outputs (GPIOs)