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/*
* FreeRTOS Kernel V10.2.1
* Copyright (C) 2019 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* http://www.FreeRTOS.org
* http://aws.amazon.com/freertos
*
* 1 tab == 4 spaces!
*/
/* Scheduler includes. */
#include "FreeRTOS.h"
#include "portable.h"
/* Demo app includes. */
#include "partest.h"
/* Hardware specific definitions. */
#include "AT91R40008.h"
#include "pio.h"
#include "aic.h"
#define partstNUM_LEDS ( 8 )
#define partstALL_OUTPUTS_OFF ( ( unsigned long ) ~(0xFFFFFFFF << partstNUM_LEDS) )
static unsigned long ulLEDReg;
/*-----------------------------------------------------------
* Simple parallel port IO routines.
*-----------------------------------------------------------*/
static void SetLeds (unsigned int leds)
{
unsigned long ulPIOSetReg, ulPIOClearReg;
/* LEDs are grouped in different port bits: P3-P6 and P16-P19.
A port bit set to '0' turns an LED on, '1' turns it off. */
ulPIOSetReg = ( (leds & 0xF) << 16 ) | ( (leds & 0xF0) >> 1 );
ulPIOClearReg = (~ulPIOSetReg) & 0x000F0078;
AT91C_BASE_PIO->PIO_SODR = ulPIOSetReg;
AT91C_BASE_PIO->PIO_CODR = ulPIOClearReg;
}
/*-----------------------------------------------------------*/
void vParTestInitialise( void )
{
/* This is performed from main() as the io bits are shared with other setup
functions. Ensure the outputs are off to start. */
ulLEDReg = partstALL_OUTPUTS_OFF;
/* Enable clock to PIO... */
AT91C_BASE_PS->PS_PCER = AT91C_PS_PIO;
/* Enable all 8 LEDs and the four switches to be controlled by PIO... */
AT91C_BASE_PIO->PIO_PER = P3 | P4 | P5 | P6 | P16 | P17 | P18 | P19 | P1 | P2 | P9 | P12;
/* Configure all LED PIO lines for output... */
AT91C_BASE_PIO->PIO_OER = P3 | P4 | P5 | P6 | P16 | P17 | P18 | P19;
/* Configure all switch PIO lines for input... */
AT91C_BASE_PIO->PIO_ODR = P1 | P2 | P9 | P12;
/* Set initial state of LEDs. */
SetLeds( ulLEDReg );
}
/*-----------------------------------------------------------*/
void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )
{
/* Switch an LED on or off as requested. */
if (uxLED < partstNUM_LEDS)
{
if( xValue )
{
ulLEDReg &= ~(1 << uxLED);
}
else
{
ulLEDReg |= (1 << uxLED);
}
SetLeds( ulLEDReg );
}
}
/*-----------------------------------------------------------*/
void vParTestToggleLED( unsigned portBASE_TYPE uxLED )
{
/* Toggle the state of the requested LED. */
if (uxLED < partstNUM_LEDS)
{
ulLEDReg ^= ( 1 << uxLED );
SetLeds( ulLEDReg );
}
}
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