Datasheet

GPIO direction control

Integer read-only gpio.2

This is an integer representing a bit mask indicating which GPIO bits are configured for outputs. Only

bits for which the GPIO bit mask is 1 are valid. A 1 indicates the GPIO bit is an output, a 0 indicates

an input.

7 6 5 4 3 2 1 0

GPIO10 GPIO9 GPIO6 GPIO5 GPIO4 GPIO3 GPIO2 GPIO1

GPIO data

Integer read-write gpio.2

This is an integer representing a bit mask indicating the GPIO bits status. On a read, the current

value of the input pins is returned. Output bits return the last value set. On a write, bits configured as

outputs are set to the value given by the corresponding mask bit. For input bits, a write has no effect.

7 6 5 4 3 2 1 0

GPIO10 GPIO9 GPIO6 GPIO5 GPIO4 GPIO3 GPIO2 GPIO1

GPIO trigger mask

Integer read-only gpio.2

This value is an integer representing a 32 bit mask expressed in hex digits. The mask is encoded as

follows:

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16

N/A N/A N/A N/A N/A N/A N/A N/A TRIG16 TRIG15 TRIG14 TRIG13 TRIG12 TRIG11 TRIG10

TRIG9

GPIO10 GPIO9 GPIO6 GPIO5 GPIO4 GPIO3 GPIO2

GPIO1

1 to 0 1 to 0 1 to 0 1 to 0 1 to 0 1 to 0 1 to 0 1 to

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

N/A N/A N/A N/A N/A N/A N/A N/A TRIG8 TRIG7 TRIG6 TRIG5 TRIG4 TRIG3 TRIG2

TRIG1

GPIO10 GPIO9 GPIO6 GPIO5 GPIO4 GPIO3 GPIO2

GPIO1

0 to 1 0 to 1 0 to 1 0 to 1 0 to 1 0 to 1 0 to 1 0 to

A value of 1 indicates the corresponding GPIO trigger condition is enabled. A value of 0 indicates the

correspon ding GPIO trigger condition is disabled. For example a hex value of 4 represents GPIO3 0

to 1 transition (TRIG3) is enabled as a trigger.

GPIO transmit string table index

Integer read-only gpio.5.1.1.n

This value is the index into the GPIO message table for trigger number n. For the SX-550, this

always returns n as its value.

Part Number 40183-101 Silex SX-550 Developer's Guide Page 67