/* | |
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*/ | |
/*----------------------------------------------------------- | |
* Simple digital IO routines. | |
*-----------------------------------------------------------*/ | |
/* Kernel includes. */ | |
#include "FreeRTOS.h" | |
/* Demo application includes. */ | |
#include "partest.h" | |
/* Library includes. */ | |
#include "xgpio.h" | |
/* The hardware design that accompanies this demo project has four LED | |
outputs. */ | |
#define partstMAX_LED 4 | |
/*-----------------------------------------------------------*/ | |
/* A hardware specific constant required to use the Xilinx driver library. */ | |
static const unsigned portBASE_TYPE uxGPIOOutputChannel = 1UL; | |
/* The current state of the output port. */ | |
static unsigned char ucGPIOState = 0U; | |
/* Structure that hold the state of the ouptut peripheral used by this demo. | |
This is used by the Xilinx peripheral driver API functions. */ | |
static XGpio xOutputGPIOInstance; | |
/* | |
* Setup the IO for the LED outputs. | |
*/ | |
void vParTestInitialise( void ) | |
{ | |
portBASE_TYPE xStatus; | |
const unsigned char ucSetToOutput = 0U; | |
/* Initialise the GPIO for the LEDs. */ | |
xStatus = XGpio_Initialize( &xOutputGPIOInstance, XPAR_LEDS_4BITS_DEVICE_ID ); | |
if( xStatus == XST_SUCCESS ) | |
{ | |
/* All bits on this channel are going to be outputs (LEDs). */ | |
XGpio_SetDataDirection( &xOutputGPIOInstance, uxGPIOOutputChannel, ucSetToOutput ); | |
/* Start with all LEDs off. */ | |
ucGPIOState = 0U; | |
XGpio_DiscreteWrite( &xOutputGPIOInstance, uxGPIOOutputChannel, ucGPIOState ); | |
} | |
configASSERT( xStatus == XST_SUCCESS ); | |
} | |
/*-----------------------------------------------------------*/ | |
void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue ) | |
{ | |
unsigned char ucLED = 1U; | |
/* Only attempt to set the LED if it is in range. */ | |
if( uxLED < partstMAX_LED ) | |
{ | |
ucLED <<= ( unsigned char ) uxLED; | |
portENTER_CRITICAL(); | |
{ | |
if( xValue == pdFALSE ) | |
{ | |
ucGPIOState &= ~ucLED; | |
} | |
else | |
{ | |
ucGPIOState |= ucLED; | |
} | |
XGpio_DiscreteWrite( &xOutputGPIOInstance, uxGPIOOutputChannel, ucGPIOState ); | |
} | |
portEXIT_CRITICAL(); | |
} | |
} | |
/*-----------------------------------------------------------*/ | |
void vParTestToggleLED( unsigned portBASE_TYPE uxLED ) | |
{ | |
unsigned char ucLED = 1U; | |
/* Only attempt to toggle the LED if it is in range. */ | |
if( uxLED < partstMAX_LED ) | |
{ | |
ucLED <<= ( unsigned char ) uxLED; | |
portENTER_CRITICAL(); | |
{ | |
if( ( ucGPIOState & ucLED ) != 0 ) | |
{ | |
ucGPIOState &= ~ucLED; | |
} | |
else | |
{ | |
ucGPIOState |= ucLED; | |
} | |
XGpio_DiscreteWrite( &xOutputGPIOInstance, uxGPIOOutputChannel, ucGPIOState ); | |
} | |
portEXIT_CRITICAL(); | |
} | |
} | |