C++ Library to use with IO Zero 32 Raspberry Pi development board.
The example demo files can be found in /ABElectronics_CPP_Libraries/IOZero32/demos
Downloading and Installing the library
To download to your Raspberry Pi type in the terminal:
git clone https://github.com/abelectronicsuk/ABElectronics_CPP_Libraries.git
Classes:
IOZero32(address)
Parameters:
address: I2C address for the target device. 0x20 to 0x27
Methods:
set_pin_direction(uint8_t pin, uint8_t direction):
Sets the IO direction for an individual pin
Parameters:
pin: 1 to 16
direction: 1 = input, 0 = output
Returns: null
get_pin_direction(uint8_t pin)
Get the IO direction for an individual pin
Parameters:
pin: pin to read, 1 to 16
Returns: (uint8_t) 1 = input, 0 = output
set_port_direction(uint8_t port, uint8_t direction):
Sets the IO direction for the specified IO port
Parameters:
port: 0 = pins 1 to 8, 1 = pins 9 to 16
direction: number between 0 and 255 or 0x00 and 0xFF. Each bit in the 8-bit number represents a pin on the port. 1 = input, 0 = output
Returns: null
get_port_direction(uint8_t port):
Get the direction from an IO port
Parameters:
port: 0 = pins 1 to 8, 1 = pins 9 to 16
Returns: (uint8_t) number between 0 and 255 (0xFF)
set_bus_direction(uint16_t direction):
Sets the IO direction for all pins on the bus
Parameters:
direction: 16-bit number 0 to 65535 (0xFFFF). For each bit 1 = input, 0 = output
Returns: null
get_bus_direction()
Get the direction for an IO bus
Returns: (uint16_t) 16-bit number 0 to 65535 (0xFFFF). For each bit 1 = input, 0 = output
write_pin(uint8_t pin, uint8_t value)
Write to an individual pin 1 - 16
Parameters:
pin: 1 to 16
value: 1 = logic high, 0 = logic low
Returns: null
write_port(uint8_t port, uint8_t value)
Write to all pins on the selected port
Parameters:
port: 0 = pins 1 to 8, 1 = pins 9 to 16
value: number between 0 and 255 or 0x00 and 0xFF. Each bit in the 8-bit number represents a pin on the port. 1 = logic high, 0 = logic low
Returns: null
write_bus(uint16_t value)
Write to all pins on the selected bus
Parameters:
value: 16-bit number 0 to 65535 (0xFFFF). For each bit 1 = logic high, 0 = logic low
Returns: null
read_pin(uint8_t pin)
Read the value of an individual pin 1 - 16
Parameters:
pin: 1 to 16
Returns: (uint8_t) 0 = logic low, 1 = logic high
read_port(uint8_t port)
Read all pins on the selected port
Parameters:
port: 0 = pins 1 to 8, 1 = pins 9 to 16
Returns: (uint8_t) number between 0 and 255 or 0x00 and 0xFF. Each bit in the 8-bit number represents a pin on the port. 0 = logic low, 1 = logic high
read_bus()
Read all pins on the bus
Returns: (uint16_t) 16-bit number 0 to 65535 (0xFFFF) Each bit in the 16-bit number represents a pin on the port. 0 = logic low, 1 = logic high
set_pin_polarity(uint8_t pin, uint8_t polarity)
Set the polarity of the selected pin
Parameters:
pin: 1 to 16
polarity: 0 = same logic state of the input pin, 1 = inverted logic state of the input pin
Returns: null
get_pin_polarity(uint8_t pin)
Get the polarity of the selected pin
Parameters:
pin: pin to read, 1 to 16
Returns: (uint8_t) 0 = same logic state of the input pin, 1 = inverted logic state of the input pin
set_port_polarity(uint8_t port, uint8_t polarity)
Set the polarity of the pins on a selected port
Parameters:
port: 0 = pins 1 to 8, 1 = pins 9 to 16
polarity: number between 0 and 255 or 0x00 and 0xFF. Each bit in the 8-bit number represents a pin on the port. 0 = same logic state of the input pin, 1 = inverted logic state of the input pin
Returns: null
get_port_polarity(uint8_t port):
Get the polarity for the selected IO port
Parameters:
port: 0 = pins 1 to 8, 1 = pins 9 to 16
Returns: (uint8_t) number between 0 and 255 (0xFF)
set_bus_polarity(uint16_t polarity)
Set the polarity of the pins on the bus
Parameters:
polarity: 16-bit number 0 to 65535 (0xFFFF). For each bit 0 = same logic state of the input pin, 1 = inverted logic state of the input pin
Returns: null
get_bus_polarity()
Get the polarity of the pins on the bus
Returns: (uint16_t) 16-bit number 0 to 65535 (0xFFFF). For each bit 0 = same logic state of the input pin, 1 = inverted logic state of the input pin