| /* | |
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| This file is part of the FreeRTOS distribution. | |
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| *************************************************************************** | |
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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(); | |
| } | |
| } | |