Laird BTM410, Руководство пользователя

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BTM410/411
Bluetooth
®
AT Data Module
39 www.lairdtech.com Laird Technologies
AT COMMAND SET
REFERENCE AT COMMAND SET
REFERENCE
Table 3-20: GPIO configuration register
Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Reserved FME INV DIR PS
Default 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Table 3-21: GPIO Configuration Register Field Descriptions
Field Description
0 – PS I/O Pin State – returns the current state of the I/O pin (0/1) when read
A write affects the I/0 pin directly if DIR=1 and FME=0
1 – DIR Direction – controls if the I/O pin is an input or an output
0 input
1 output
2 – INV Inversion – controls if the I/O pin is inverted or not. Applies to both pin directions
(read and write).
0 not inverted
1 inverted
3 – FME Function Mapping Enable – Enables function mapping of the pin. A function
mapping code must be set in GPIO configuration register [8:15]. The pin will carry
out the assigned operation and is not accessible anymore as GPIO.
0 disable function mapping
1 enable function mapping
[4:15] Reserved
Table 3-22: GPIO S registers
Register GPIO Default Range Description
S650 0 0..1 Mode for GPIO Config Registers:
0 = no mask;
1 = enable i/o pin state Mask
S651 GPIO1 0x0000 0..0xFFFF GPIO Configuration Registers
S650 must be set to 0 to enable configuration
access
Controls Pin State, Pin Direction, Pin Inversion,
Function
Mapping Enable, Function Mapping Select and
Function
Mapping Code / av_operation_id.
See Table 3-21: GPIO Configuration Register Field
Descriptions
S652 GPIO2
S653 GPIO3
S654 GPIO4
S655 GPIO5
S656 GPIO6
S657 GPIO7
S658 GPIO8
S670 GPIO1..8 0x0000 0..0xFF Read/Write all GPIOs in one atomic step (Write
operation only affects GPIOs configured as
outputs)
0x0001: GPIO1
0x0002: GPIO2
0x0004: GPIO3
0x0008: GPIO4
0x0010: GPIO5
0x0020: GPIO6
0x0040: GPIO7
0x0080: GPIO8