From 044ad7c3987460ede48ff27afd6bdb0ca05a0432 Mon Sep 17 00:00:00 2001 From: Harald Welte Date: Mon, 4 Jul 2011 20:52:54 +0200 Subject: import at91lib from at91lib_20100901_softpack_1_9_v_1_0_svn_v15011 it's sad to see that atmel doesn't publish their svn repo or has a centralized location or even puts proper version/release info into the library itself --- drivers/lcd/lcdd_hx8347.c | 147 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 147 insertions(+) create mode 100644 drivers/lcd/lcdd_hx8347.c (limited to 'drivers/lcd/lcdd_hx8347.c') diff --git a/drivers/lcd/lcdd_hx8347.c b/drivers/lcd/lcdd_hx8347.c new file mode 100644 index 0000000..e5871ad --- /dev/null +++ b/drivers/lcd/lcdd_hx8347.c @@ -0,0 +1,147 @@ +/* ---------------------------------------------------------------------------- + * 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); +} -- cgit v1.2.3