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29 /*-----------------------------------------------------------
30 * Simple IO routines to control the LEDs.
31 *-----------------------------------------------------------*/
33 /* Scheduler includes. */
40 /* Xilinx includes. */
44 #define partstNUM_LEDS 8
46 /*-----------------------------------------------------------*/
48 /* The GPIO instance to which the LEDs are connected. */
49 static XGpio xOutputGPIOInstance;
51 /* Maintains the current LED output state. */
52 static volatile UBaseType_t uxGPIOState = 0U;
54 /* Constant required by the Xilinx peripheral driver API functions that are
55 relevant to the particular hardware set up. */
56 static const unsigned long ulGPIOOutputChannel = 1UL;
58 /*-----------------------------------------------------------*/
60 void vParTestInitialise( void )
62 portBASE_TYPE xStatus;
63 const unsigned char ucSetToOutput = 0U;
65 /* Initialize the GPIO for the LEDs. */
66 xStatus = XGpio_Initialize( &xOutputGPIOInstance, XPAR_AXI_GPIO_0_DEVICE_ID );
67 if( xStatus == XST_SUCCESS )
69 /* All bits on this channel are going to be outputs (LEDs). */
70 XGpio_SetDataDirection( &xOutputGPIOInstance, ulGPIOOutputChannel, ucSetToOutput );
72 /* Start with all LEDs off. */
74 XGpio_DiscreteWrite( &xOutputGPIOInstance, ulGPIOOutputChannel, ( uint8_t ) uxGPIOState );
77 configASSERT( ( xStatus == XST_SUCCESS ) );
79 /*-----------------------------------------------------------*/
81 void vParTestSetLED( UBaseType_t uxLED, BaseType_t xValue )
83 if( uxLED < partstNUM_LEDS )
87 if( xValue != pdFALSE )
89 uxGPIOState |= ( 1UL << uxLED );
93 uxGPIOState &= ~( 1UL << uxLED );
96 XGpio_DiscreteWrite( &xOutputGPIOInstance, ulGPIOOutputChannel, ( uint8_t ) uxGPIOState );
101 /*-----------------------------------------------------------*/
103 void vParTestToggleLED( unsigned portBASE_TYPE uxLED )
105 if( uxLED < partstNUM_LEDS )
107 taskENTER_CRITICAL();
109 uxGPIOState ^= ( 1UL << uxLED );
110 XGpio_DiscreteWrite( &xOutputGPIOInstance, ulGPIOOutputChannel, ( uint8_t ) uxGPIOState );