SX1503 Module¶
This module contains the Zerynth driver for Semtech SX1503 low voltage General Purpose parallel Input/Output. The unit allows easy serial expansion of I/O through a standard 400kHz I2C interface. Interrupt handling and programmable logic functions are not implemented (datasheet).
SX1503 class¶
-
class
SX1503
(drvname, clk=400000)¶ Creates an intance of the SX1503 class.
Parameters: - drvname – I2C Bus used ‘( I2C0, ... )’
- clk – Clock speed, default 400kHz
Example:
from semtech.sx1503 import sx1503 ... port_expander = sx1503.SX1503(I2C1) port_expander.pinMode(10,INPUT_PULLUP) state = port_expander.digitalRead(10) port_expander.pinMode(0,OUTPUT) port_expander.digitalWrite(0,HIGH)
-
pinMode
(pin, mode)¶ Select a mode for a pin. Valid pin values are from
0
to15
included. Available modes are:INPUT
INPUT_PULLUP
INPUT_PULLDOWN
OUTPUT
-
get_port
(port)¶ Returns the state of all pins on port port. As a consequence of having 8 pins for port, returned value can be between
0
and255
.port I/O bank pins 0 A 0 to 7 1 B 8 to 15
-
digitalRead
(pin)¶ Returns the state of pin pin. The state can be
0
or1
.
-
digitalWrite
(pin, val)¶ Set pin pin to value val. Value can be
0
or1
.
-
set_port
(port, val)¶ Set all pins on port port to value val. val MUST be between
0
and255
.
-
set_boost
(mode)¶ Set the boost mode (cfr. par 2.2.1 of the datasheet).
mode boost mode 0 OFF 1 ON