GPIO

Overview

Perform GPIO on target

Discussion

This module performs GPIO operations on the target hardware by calling the user implemented functions 'awe_pltGPIOGetPin' or 'awe_pltGPIOSetPin'. The target AWECore must be built to enable this GPIO feature. Contact DSP Concepts for questions.

Type Definition

CODE

typedef struct _ModuleGPIO
{
    ModuleInstanceDescriptor instance;            // Common Audio Weaver module instance structure
    INT32 nPins;                                  // Number of pins
    INT32 nPinDir;                                // I/O direction 0 - input, 1 - output
    INT32 errorCode;                              // Internal Error Number
    INT32* nPinIndex;                             // Specifies which physical GPIO pins to use.
    INT32* nLastOutValue;                         // Holds the last output value.
} ModuleGPIOClass;

Variables

Properties

Name	Type	Usage	isHidden	Default value	Range	Units
nPins	int	const	0	1	Unrestricted
nPinDir	int	const	0	0	Unrestricted
errorCode	int	state	0	0	Unrestricted
nPinIndex	int*	parameter	0	[1 x 1]	Unrestricted
nLastOutValue	int*	parameter	0	[1 x 1]	Unrestricted

Pins

Output Pins

Name: out1

Description: Output signal

Data type: int

MATLAB Usage

File Name: GPIO_module.m

CODE

 M = GPIO_module(NAME, NUMBER_PINS, PIN_DIR, SR)
 Depending on PIN_DIR this block inputs or outputs a logical value from/to each 
 specified GPIO pin on the target hardware. For a given instance of this block  
 pins must be either all input or all output. If you need some pins to be input 
 and some pins to be output create two separate blocks; one for all the input 
 pins and one for all the output pins. Consult Audio Weaver documentation 
 to determine how the numbered pins are mapped to actual target hardware
 pins. The user must select which of these pins to use.
    NAME - name of the module.
    NUMBER_PINS - Number of pins
    PIN_DIR - 0 = Input Pin.  1 = Output Pin.
    SR - optional sample rate for input pins (1000 Hz by default)