/* ---------------------------------------------------------------------------- * 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 #include #include #include //------------------------------------------------------------------------------ // 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); }