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155 lines
4.0 KiB
C
155 lines
4.0 KiB
C
/*
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* FreeRTOS Kernel V10.0.1
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* Copyright (C) 2017 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy of
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* this software and associated documentation files (the "Software"), to deal in
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* the Software without restriction, including without limitation the rights to
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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* the Software, and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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* http://www.FreeRTOS.org
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* http://aws.amazon.com/freertos
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*
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* 1 tab == 4 spaces!
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*/
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/*-----------------------------------------------------------
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* Simple parallel port IO routines.
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*-----------------------------------------------------------*/
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/* Kernel includes. */
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#include "FreeRTOS.h"
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#include "task.h"
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/* Library includes. */
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#include "mss_gpio.h"
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#define partstMAX_LEDS 8
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static volatile unsigned long ulGPIOState = 0UL;
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/*-----------------------------------------------------------*/
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void vParTestInitialise( void )
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{
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long x;
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/* Initialise the GPIO */
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MSS_GPIO_init();
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/* Set up GPIO for the LEDs. */
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for( x = 0; x < partstMAX_LEDS; x++ )
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{
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MSS_GPIO_config( ( mss_gpio_id_t ) x , MSS_GPIO_OUTPUT_MODE );
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}
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/* All LEDs start off. */
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ulGPIOState = 0xffffffffUL;
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MSS_GPIO_set_outputs( ulGPIOState );
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}
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/*-----------------------------------------------------------*/
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void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )
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{
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if( uxLED < partstMAX_LEDS )
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{
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/* A critical section is used as the LEDs are also accessed from an
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interrupt. */
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taskENTER_CRITICAL();
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{
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if( xValue == pdTRUE )
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{
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ulGPIOState &= ~( 1UL << uxLED );
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}
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else
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{
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ulGPIOState |= ( 1UL << uxLED );
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}
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MSS_GPIO_set_outputs( ulGPIOState );
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}
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taskEXIT_CRITICAL();
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}
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}
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/*-----------------------------------------------------------*/
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void vParTestSetLEDFromISR( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )
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{
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unsigned portBASE_TYPE uxInterruptFlags;
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uxInterruptFlags = portSET_INTERRUPT_MASK_FROM_ISR();
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{
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if( uxLED < partstMAX_LEDS )
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{
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if( xValue == pdTRUE )
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{
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ulGPIOState &= ~( 1UL << uxLED );
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}
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else
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{
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ulGPIOState |= ( 1UL << uxLED );
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}
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MSS_GPIO_set_outputs( ulGPIOState );
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}
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}
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portCLEAR_INTERRUPT_MASK_FROM_ISR( uxInterruptFlags );
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}
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/*-----------------------------------------------------------*/
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void vParTestToggleLED( unsigned portBASE_TYPE uxLED )
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{
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if( uxLED < partstMAX_LEDS )
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{
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/* A critical section is used as the LEDs are also accessed from an
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interrupt. */
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taskENTER_CRITICAL();
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{
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if( ( ulGPIOState & ( 1UL << uxLED ) ) != 0UL )
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{
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ulGPIOState &= ~( 1UL << uxLED );
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}
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else
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{
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ulGPIOState |= ( 1UL << uxLED );
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}
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MSS_GPIO_set_outputs( ulGPIOState );
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}
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taskEXIT_CRITICAL();
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}
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}
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/*-----------------------------------------------------------*/
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long lParTestGetLEDState( unsigned long ulLED )
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{
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long lReturn = pdFALSE;
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if( ulLED < partstMAX_LEDS )
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{
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taskENTER_CRITICAL();
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{
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if( ( ulGPIOState & ( 1UL << ulLED ) ) == 0UL )
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{
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lReturn = pdTRUE;
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}
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}
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taskEXIT_CRITICAL();
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}
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return lReturn;
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}
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/*-----------------------------------------------------------*/
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