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/* ----------------------------------------------------------------------------
* ATMEL Microcontroller Software Support
* ----------------------------------------------------------------------------
* Copyright (c) 2008, Atmel Corporation
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the disclaimer below.
*
* Atmel's name may not be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
* DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
* ----------------------------------------------------------------------------
*/
//------------------------------------------------------------------------------
// Headers
//------------------------------------------------------------------------------
#include "lcdd.h"
#include <board.h>
#include <pmc/pmc.h>
#include <hx8347/hx8347.h>
#include <pio/pio.h>
//------------------------------------------------------------------------------
// Global functions
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
/// Initializes the LCD controller.
/// SMC are configured @ 96MHz for LCD.
/// \param pLcdBase LCD base address.
//------------------------------------------------------------------------------
void LCDD_Initialize(void)
{
const Pin pPins[] = {BOARD_LCD_PINS};
AT91PS_HSMC4_CS pSMC = AT91C_BASE_HSMC4_CS2;
unsigned int rMode;
// Enable pins
PIO_Configure(pPins, PIO_LISTSIZE(pPins));
// Enable peripheral clock
PMC_EnablePeripheral(AT91C_ID_HSMC4);
// EBI SMC Configuration
pSMC->HSMC4_SETUP = 0
| ((1 << 0) & AT91C_HSMC4_NWE_SETUP)
| ((1 << 8) & AT91C_HSMC4_NCS_WR_SETUP)
| ((9 << 16) & AT91C_HSMC4_NRD_SETUP)
| ((9 << 24) & AT91C_HSMC4_NCS_RD_SETUP)
;
pSMC->HSMC4_PULSE = 0
| (( 4 << 0) & AT91C_HSMC4_NWE_PULSE)
| (( 4 << 8) & AT91C_HSMC4_NCS_WR_PULSE)
| (( 36 << 16) & AT91C_HSMC4_NRD_PULSE)
| (( 36 << 24) & AT91C_HSMC4_NCS_RD_PULSE)
;
pSMC->HSMC4_CYCLE = 0
| ((10 << 0) & AT91C_HSMC4_NWE_CYCLE)
| ((45 << 16) & AT91C_HSMC4_NRD_CYCLE)
;
rMode = pSMC->HSMC4_MODE & ~(AT91C_HSMC4_DBW | AT91C_HSMC4_READ_MODE | AT91C_HSMC4_WRITE_MODE);
pSMC->HSMC4_MODE = rMode
| (AT91C_HSMC4_READ_MODE)
| (AT91C_HSMC4_WRITE_MODE)
| (AT91C_HSMC4_DBW_WIDTH_SIXTEEN_BITS)
;
// Initialize LCD controller (HX8347)
LCD_Initialize((void *)BOARD_LCD_BASE);
// Set LCD backlight
LCDD_SetBacklight(25);
}
//------------------------------------------------------------------------------
/// Turn on the LCD
//------------------------------------------------------------------------------
void LCDD_Start(void)
{
LCD_On((void *)BOARD_LCD_BASE);
}
//------------------------------------------------------------------------------
/// Turn off the LCD
//------------------------------------------------------------------------------
void LCDD_Stop(void)
{
LCD_Off((void *)BOARD_LCD_BASE);
}
//------------------------------------------------------------------------------
/// Set the backlight of the LCD.
/// \param level Backlight brightness level [1..32], 32 is maximum level.
//------------------------------------------------------------------------------
void LCDD_SetBacklight (unsigned int level)
{
unsigned int i;
const Pin pPins[] = {BOARD_BACKLIGHT_PIN};
// Enable pins
PIO_Configure(pPins, PIO_LISTSIZE(pPins));
// Switch off backlight
PIO_Clear(pPins);
i = 600 * (BOARD_MCK / 1000000); // wait for at least 500us
while(i--);
// Set new backlight level
for (i = 0; i < level; i++) {
PIO_Clear(pPins);
PIO_Clear(pPins);
PIO_Clear(pPins);
PIO_Set(pPins);
PIO_Set(pPins);
PIO_Set(pPins);
// PIO_Clear(pPins);
// PIO_Clear(pPins);
// PIO_Clear(pPins);
}
// PIO_Set(pPins);
}
|
